Schedule

Sunday, August 6, 2000

Symposium # 1: Education and Human Resources Vice President's Symposium: Defining Ecological Thinking as a Goal for Ecology Education.
Organized by: A.R. Berkowitz and C. Brewer
Ballroom I - Cliff Lodge
8:00 AM to 12:00 PM


8:00 AM	Introduction: What are the foundational "ways of thinking" that are the essential tools of the ecologically literate person. BERKOWITZ, A. , C. BREWER
8:15 AM	Evolutionary ecology: Dealing with ghosts of interactions past. ORIANS, G.H.
8:45 AM	Facilitating scientific thinking: The role of ecology in the epistemological development of college students. KEESING, F.
9:15 AM	Hierarchical thinking and quality: Can ecological science and humanities exchange ideas and styles? PIRES, J.C. , T.F.H. ALLEN
10:00 AM	Creative thinking in ecology. FISHER, S.G.
10:30 AM	Ecologists and ethical expertise: Thinking like a citizen. SHRADER-FRECHETTE, K.
11:00 AM	Summary: Ecological thinking as a goal for education.
11:15 AM	Panel discussion.

Symposium # 2: Stressors in Western Mountain Ecosystems: Detecting Change and Its Consequences.
Organized by: D. L. Peterson and L. J. Graumlich.
Sponsored by: Public Affairs Committee.
Ballroom II - Cliff Lodge
8:00 AM to 11:45 AM


8:00 AM	Taking the pulse of mountains: stress and ecosystem change in the 20th century PETERSON, D.L.
8:30 AM	1000 years of climate change and ecological response in Western montane forests. GRAUMLICH, L.J.
9:00 AM	Altered disturbance regimes: fire, fuels, and forest structure STEPHENSON, N.L. *, T.W. SWETNAM, T.T. VEBLEN
9:30 AM	Exotic species and biodiversity in mountain forests. STOHLGREN, T.J. *, J.E. KEELEY, D.M. GRABER
10:00 AM	Break
10:15 AM	Air pollution: a chronic stressor in Western mountains TONNESSEN, K.A *
10:45 AM	Land use in the New West: Ecological and socioeconomic causes and consequences HANSEN, A.J. *, R. KNIGHT
11:15 AM	Taking the pulse of mountains: research and monitoring networks FAGRE, D.B.

Symposium # 3: Linking Communities Across Ecosystem Boundaries: A Symposium in Memory of Gary A. Polis.
Organized by: D.M. Sanzone.
Sponsored by: Aquatic Ecology Section.
Ballroom III - Cliff Lodge
8:00 AM to 12:00 PM


8:00 AM	Connectivity between aquatic and terrestrial ecosystems: Symposium overview.
8:10 AM	Movement of organic matter and nutrients from stream to riparian zone: A reversal of fortune. SCHADE, J.D. , J.R. WELTER, N.B. GRIMM, S.G. FISHER
8:30 AM	Terrestrial-aquatic linkages in a Pacific Northwest old-growth forest: Results from an aquatic 15N tracer study. JOHNSON, S.L. , L.R. ASHKENAS, S.V. GREGORY
8:50 AM	Use and limits of natural abundance stable isotope measurements to understand watershed-river exchange. FINLAY, J. *, G. CABANA, W. RAINEY, M. POWER
9:10 AM	Boundary permeability at land-water interfaces: The influence of 3-D structure. ANDERSON, W.B. *
9:30 AM	Land-water linkages in the coastal temperate rainforest: A riparian perspective. HELFIELD, J.M. *, R.J. NAIMAN
9:50 AM	Subsidies make strange partners: The effects of seabirds on terrestrial detritivores. SANCHEZ PINERO, F.
10:10 AM	Break
10:30 AM	Effects of ocean to land trophic interconnections on the dynamics and stability of populations and food webs. POLIS, G.A. *, P. STAPP, M.D. ROSE
10:50 AM	Nitrogen transfer from stream to riparian foodwebs: Results from eight 15N tracer experiments. SANZONE, D.M. *, J.L. MEYER, J.L. TANK, P.J. MULHOLLAND, N.B. GRIMM, S.V. GREGORY, W.H. MCDOWELL, W.B. BOWDEN, W.K. DODDS
11:10 AM	Responses of terrestrial consumers to emergent aquatic insects in a forested Northern California watershed. POWER, M.E. , W.E. RAINEY
11:30 AM	Trophic links between rivers and riparian lizards: Indirect effects of aquatic insect subsidies on terrestrial resources. SABO, J.L. , M.E. POWER
11:50 AM	Synthesis.

Oral Session #1: Plant Carbon Allocation.
Presider: D.A. Pyke, Oregon State University.
Wasatch Room - Cliff Lodge
8:15 AM to 11:45 AM


8:15 AM	A carbon model of Atlantic white cedar swamps. ATKINSON, R.B. *
8:30 AM	Diurnal patterns of isoprene emission and the potential role of substrate regulation. FUNK, J.L. *, H.M. FULLER, C. BAKER, C.G. JONES, M.T. LERDAU
8:45 AM	Growth rate as a function of diameter in tropical trees: Data from the BCI large forest plot. CONDIT, R.
9:00 AM	Family effects on leaf area predictive equations for Pinus taeda. ROBERTS, S.D. *, T.J. DEAN
9:15 AM	Microclimate affects stress protein expression. KNIGHT, C.A. , D.D. ACKERLY
9:30 AM	Long-term maturational changes in foliar morphology and physiology in red spruce in relation to declining net primary productivity with tree age. DAY, M.E. *, M.S. GREENWOOD, A.S. WHITE
9:45 AM	A single-tree approach to age-related decline in stand growth. BINKLEY, D. *, M.G. RYAN, H. BARNARD
10:00 AM	Break
10:15 AM	When branch autonomy fails: Size does matter. SPRUGEL, D.G.
10:30 AM	Effects of salinity and temperature on respiratory metabolism of Salicornia utahensis from a Great Basin playa. HARRIS, L.C. , M.A. KHAN, B.N. SMITH*, L.D. HANSEN
10:45 AM	Effects of ontogeny and shading on carbon allocation to storage in seedlings of Ardisia crenata, a shade tolerant non-native shrub. KITAJIMA, K. , M. DOOLEY
11:00 AM	Does the temperature sensitive of plant respiration vary among contrasting species and environmental conditions? ATKIN, O.K. *, B.R. BYRNE, E. COVEY-CRUMP, I. SCHEURWATER
11:15 AM	Hormonal control of resource sharing in the clonal plant, Fragaria chiloensis. ALPERT, P. , C. HOLZAPFEL, J.M. BENSON
11:30 AM	Carbon uptake in forests of Eurasia and North America. GOODALE, C.L. *, MEMBERSOFTHENCEASCARBONWORKINGGROUP

Oral Session #2: Conservation Ecology.
Presider: S.J. Meiners, Rutgers University.
Magpie Room - Cliff Lodge
8:00 AM to 12:15 PM


8:00 AM	Assessing the impact of the invasive tree Acer platanoides on forest communities. FANG, W.
8:15 AM	Biodiversity: Aspen has the lead, but will non-native species take over? CHONG, G.W. *, T.J. STOHLGREN, S. SIMONSON
8:30 AM	Superior fitness of hybrid cottonwoods along a western stream: Ecological and conservation implications. SCHWEITZER, J.A.
8:45 AM	Naturalized floras are largely the products of deliberate introductions: Assessment of temperate and subtropical floras. MACK, R.N. , M. ERNEBERG
9:00 AM	Species diversity and biological invasions: Relating local process to community pattern. LEVINE, J.M.
9:15 AM	Exotic plant invasions in southern Grand Staircase-Escalante National Monument, Utah. OTSUKI, Y. *, T.J. STOHLGREN, C.A. VILLA, M. LEE, J. BELNAP
9:30 AM	Using a knowledge-based system for selection of regional conservation networks as a communication tool. BOURGERON, P.S. , H.C. HUMPHRIES, K.M. REYNOLDS
9:45 AM	Maximum species richness extrapolated from samples: An accuracy assessment of current estimators. KLAWINSKI, P. , J. ZIMMERMAN, J. THOMPSON
10:00 AM	Break
10:15 AM	Plant diversity and ecosystem functioning: The importance of species evenness. WILSEY, B.J. *, G. STIRLING, H.W. POLLEY
10:30 AM	Mapping of species richness and endemism on the continental to global scale using new methodological approaches. KIER, G. *, J. MUTKE, W. BARTHLOTT
10:45 AM	Effects of experimental perturbations on biodiversity-ecosystem functioning relationships. SCHMID, B. , A. PFISTERER
11:00 AM	Ungrazed roadside verges in a grazed landscape: Interactive effects of grazing, invasion, and substrate on grassland diversity. SAFFORD, H.D. , S.P. HARRISON
11:15 AM	Implications for reintroduction of an endangered limestone endemic: Lessons from field and greenhouse germination tests. MASCHINSKI, J. *, J.E. BAGGS, C.F. SACCHI
11:30 AM	Abundance and frequency of Lycopodium species under various forest management regimes in northern hardwood forests. NAUERTZ, E.A. *, M.R. GALE, J.C. ZASADA, T.R. CROW
11:45 AM	Effects of disturbance on relationships between species richness and ecosystem processes: Using bryophyte communities as model systems. MULDER, C.P.H. *, D.F. DOAK
12:00 PM	From people to pathogens: Are parasites responding to anthropogenic disturbance? POTEET, M.F.

Oral Session #3: Avian Ecology.
Presider: D.M. Engle, Oklahoma State University.
Superior Room - Cliff Lodge
8:15 AM to 12:15 PM


8:15 AM	Sound transmission in tropical forests: Bird song convergence through habitat exploitation. SLABBEKOORN, H. *, J. ELLERS, T. SMITH
8:30 AM	Vertical organization of the small bird community in an old-growth Douglas-fir/western hemlock forest. SHAW, D.C. *, E. FREEMAN, C. FLICK
8:45 AM	Raptor population trends discerned from 23 years of migration monitoring in Nevada, Utah, and New Mexico. SMITH, J.P.
9:00 AM	Influence of life history strategies on bird population responses to stress. SABLE, S.E. *, K.A. ROSE, J.E. AUGUSTINE
9:15 AM	A comparison of age ratios, site fidelity, and spatial arrangement of a shrub-nesting songbird in heavily deer-browsed and less-browsed habitats. HALL, K.R. *
9:30 AM	Hummingbird foraging behavior in different patch types: Simulation of alternative foraging strategies. BAUM, K.A. *, W.E. GRANT
9:45 AM	Relationships among breeding latitude, timing of migration, and wintering latitude in Wilson's Warblers as revealed by hydrogen stable-isotope ratios. KELLY, J.F. *, V.A. ATUDOREI, Z.D. SHARP, D.M. FINCH
10:00 AM	Break
10:15 AM	Habitat and host selection by sympatric avian brood parasites in southeastern Arizona. CHACE, J.F.
10:30 AM	The role of small mammal predation on nesting success of grassland nesting birds. STANLEY, T.R.
10:45 AM	Effects of thermal loading on the nest microclimate of ground-nesting birds. SUEDKAMP, K.M , F.S GUTHERY, S.D FUHLENDORF
11:00 AM	Spatial patterns of population regulation and population viability in sage grouse (Centrocercus urophasianus spp.). IRVINE, R.L. *, J.M. LAMONTAGNE, T.B. LOGAN, B.O. MA, C.M. ELKIN, E.E. CRONE
11:15 AM	Vigilance, feeding efficiency, and optimal group size of northern bobwhite coveys. WILLIAMS, C.K. , R.S. LUTZ, R.D. APPLEGATE
11:30 AM	Importance of rice fields for waterbirds in the Camargue wetland complex, southern France. TOURENQ, C. , R.E. BENNETTS, F. MESLÉARD, J. MARTIN
11:45 AM	Gull-plant interactions: The pitter-patter of big feet. ELLIS, J.C.
12:00 PM	Patterns of song variation in different seasons in the bronzed cowbird support different evolutionary hypotheses. WARREN, P.

Oral Session #4: Herbivore Responses to Plants.
Presider: M.P. Sanford, Idaho State University.
Maybird Room - Cliff Lodge
8:00 AM to 12:15 PM


8:00 AM	The impact of parasitoids and plant spacing on the spread of insect outbreaks. UMBANHOWAR, J. *, A. HASTINGS
8:15 AM	Population-level variation in herbivore performance on a toxic seaweed: A mechanistic and phylogenetic approach. SOTKA, E. *, M.E. HAY
8:30 AM	Allometric scaling exponents: A test with invertebrates. CUDDINGTON, K. *, D. VASSEUR, W. CURRIE, P. YODZIS
8:45 AM	Extreme variation in body size along a relatively narrow altitude gradient in the alpine tree weta Hemideina maori (Orthoptera: Stenopelmatidae). JAMIESON, I.G. *, J. ROCK
9:00 AM	Host plant selection in a guild of cactus-specialist bees: Pollen preferences of females foraging for larval provisions. MCINTOSH, M.E.
9:15 AM	Nectar requirements affect pollen foraging of a solitary bee: Exploration using linear-programming models. WILLIAMS, N.M. *
9:30 AM	Consequences of enriched CO2 and O3 for forest insects. LINDROTH, R.L. , B.J. KOPPER, C.S. AWMACK
9:45 AM	Host plant influence on movement patterns and the subsequent distribution of Lygus rugulipennis (Heteroptera: Miridae) nymphs. HANNUNEN, S. *, B. EKBOM
10:00 AM	Break
10:15 AM	Contrasting effects of plant diversity and composition on insect abundances. HADDAD, N. , D. TILMAN, J. HAARSTAD, M. RITCHIE, J. KNOPS
10:30 AM	Patch isolation and priority effects and the structure of arthropod communities inhabiting creosote bush (Larrea tridentata) in central Arizona. RANGO, J.J. *
10:45 AM	Potential ecological effects of Bt transgenes in wild plants. LETOURNEAU, D.K.
11:00 AM	When does migration matter in managing multiple populations? HUDGENS, B.
11:15 AM	Known facts about the ecology of Myzus species in Iran in comparison to recent world investigations. HODJAT, S.H.
11:30 AM	A new technique evaluating host suitability in Ophraella communa, an exotic natural enemy of hogweed. KAWABE, S.
12:00 PM	Trophic cascades in tropical versus temperate systems. DYER, L.A. *

Oral Session #5: Mutualisms.
Presider: J.P. Cronin, University of Pittsburgh.
Cottonwood Room I - Sports Event Center
8:30 AM to 11:30 AM


8:30 AM	The role of ant nutrition in mediating a lycaenid-ant mutualism. WEEKS, J.A.
8:45 AM	The importance of ant-tending to maternal care in the treehopper species, Publilia modesta. BILLICK, I. , M. WEIDMANN, J. REITHEL
9:00 AM	Induced resistance in Catalpa bignoniodes (Bignoniaceae): The rallying of a biotic defense. NESS, J.H. *, C.R. CARROLL, H.R. PULLIAM
9:15 AM	Food web structure controls stability of communities with embedded mutualisms. MCPHEARSON, P.T. , L. JIANG
9:15 AM	Genetic variation of Neotyphodium in Arizona fescue. SULLIVAN, T.J. *, S.H. FAETH
9:45 AM	Specialization and species distribution in orchid-fungal symbioses. MCCORMICK, M.K. *, K.L. O'MALLEY, D.F. WHIGHAM, J.P. O'NEILL
10:00 AM	Break
10:30 AM	Effects of microenvironment and tree characteristics on canopy vascular epiphyte distribution. CARDELUS, C. *
10:45 AM	Host tree specificity of epiphytic bromeliads on trees in tropical experimental plots, La Selva, Costa Rica. RENTMEESTER, S. , N. NADKARNI, J. EWEL
11:00 AM	Mutualistic associations of branchiobdellids and their crayfish hosts: Evidence of a freshwater cleaning symbiosis. BROWN, B.L. *, W.E. DOBSON, R.P. CREED
11:15 AM	Mutualism gone awry? Asexual endophytic fungi in native grasses. FAETH, S.H. *, T.J. SULLIVAN

Oral Session #6: Pollination Ecology.
Presider: H.A. Petrillo, Northern Arizona University.
Cottonwood Room II - Sports Event Center
8:00 AM to 12:00 PM


8:00 AM	Advantage to long-distance pollination in Leuhea seemannii, a tropical pioneer tree. DAVIDSON, J.M.
8:15 AM	Depressed pollination in habitat fragments causes low fruit set. CUNNINGHAM, S.A.
8:30 AM	Pollination of Bombax ceiba by bats, birds and bees. MISTRY, S.
8:45 AM	The effects of soil nitrogen on amino acid composition of floral nectar. GARDENER, M.C. *, M.P. GILLMAN, J. SILVERTOWN
9:00 AM	Pollination biology of saw palmetto (Serenoa repens: Palmae) in southwestern Florida. CARRINGTON, M.E. *, T.D. GOTTFRIED, J.J. MULLAHEY
9:15 AM	Pollination ecology of claret-cup cactus across a latitude gradient: Effects of pollinator variation on floral characters. SCOBELL, S.A. *, P.E. SCOTT, R.S. LANGE
9:30 AM	Temporal dioecism in a prairie species: The case of Eryngium yuccifolium Michx (Apiaceae). MOLANO-FLORES, B.
9:45 AM	The effects of nectar-robbing bumblebees on hummingbird-foraging behavior and pollen flow in Lpomopsis aggregata. IRWIN, R.E.
10:00 AM	Break
10:15 AM	Pollination success and plant population size: How strong are the links? WASER, N.M. *, M.V. PRICE, A.K. BRODY, D.R. CAMPBELL
10:30 AM	How do so many Clarkia coexist? The influence of population size and sympatric Clarkia species on pollinator availability and reproductive success in Clarkia xantiana. MOELLER, D.A. *
10:45 AM	Evolutionary ecology of a petal-spot polymorphism in Clarkia xantiana ssp. xantiana (Onagraceae): Floral landmarks affect herbivore resistance, not pollinator visitation. ECKHART, V.M. , J.D. HANSEN, C.M. LA GRANGE, E.N. TWIEG
11:00 AM	Exotic plant species and native pollinators: Implications for native biodiversity. SIMONSON, S. , G.W. CHONG, T.J. STOHLGREN
11:15 AM	California mainland vs. Channel Island pollination of Nicotiana glauca (Solanaceae): An invasive hummingbird-pollinated plant . SCHUELLER, S.K. *
11:30 AM	The effect of stress on inbreeding depression in Cucurbita texana. HAYES, N. , J.A. WINSOR*, A.G. STEPHENSON
11:45 AM	Selective seed abortion increases offspring survival in Cynoglossum officinale (Boraginaceae). MELSER, C. , P.G.L. KLINKHAMER

Oral Session #7: Aquatic Ecology: Shellfish to Snails.
Presider: J. Wojdak, Michigan State University.
Cottonwood Room III - Sports Event Center
8:30 AM to 12:15 PM


8:30 AM	Response of aquatic macrophyte communities to rusty crayfish (Orconectes rusticus) invasion: Contrasting results from long-term vs. multiple lake data. WILSON, K.A. , J.J. MAGNUSON
8:45 AM	Does a predator transition maintain the crayfish distributions in the South Fork of the New River, NC? FORTINO, K. *, R.P. CREED JR.
9:00 AM	Understanding the interaction of crayfish and the Hine's Emerald Dragonfly larvae coexisting in crayfish burrows. PINTOR, L.M. *, D.A. SOLUK
9:15 AM	Stimulatory cues for molting of fiddler crab megalopae are specific to salt marshes. JUDGE, M.L. *, N.J. O'CONNOR
9:30 AM	Native species response to invasion: Effects of green crabs on soft-shell clam behavior and morphology. WHITLOW, W.L.
9:45 AM	The use of a matrix model to study indirect effects in a hermit crab-hydroid symbiosis. DAMIANI, C. *
10:00 AM	Break
10:15 AM	Recruitment, density thresholds, and interannual variability in interaction strength. HARLEY, C.D.G.
10:30 AM	Biodiversity and species invasions in marine invertebrate communities. STACHOWICZ, J.J. *, R.B. WHITLATCH
10:45 AM	Using short-term measurements to predict long-term impact of exotic species on native species. BYERS, J.E.
11:00 AM	Population consequences of intermediate disturbance: Recruitment, browsing, predation, and geochemistry. WETHEY, D.S. , S.M. LINDSAY, S.A. WOODIN, R.L. MARINELLI
11:15 AM	Exploring mechanisms behind species diversity differences: Comparing Markov models of mussel beds and coral reefs. WOOTTON, J.T. *
11:30 AM	Differential settlement of the mussels Mytilus californianus and M. trossulus in sheltered on exposed and sheltered rocky shores.. ROBLES, C.D. , K.B. JOHNSON*, A. MARTEL
11:45 AM	A fine scale view of mussel recruitment patterns. CHESNEY, W.B. *, C.D. ROBLES
12:00 PM	Dynamics of bivalve species replacement during the zebra mussel invasion of the Hudson River. STRAYER, D.L. *, H.M. MALCOM

Oral Session #8: Mycorrhizal Fungi.
Presider: A. Pringle, Duke University.
Cottonwood Room IV - Sports Event Center
8:30 AM to 12:00 PM


8:30 AM	Mycorrhizae determine compensatory responses of American and French Centaurea maculosa after clipping. NEWINGHAM, B.A. *, C.A. ZABINSKI, R. MICHALET, R.M. CALLAWAY
8:45 AM	Short term 15 N additions to mycorrhizal Bromus madritensis ssp. rubens and neighboring Artemisia californica. YOSHIDA, L.C. *, E.B. ALLEN
9:00 AM	Evidence of host preferences in natural communities of VAM fungi from the Kalahari desert. BOHRER, G. *, D. WARD, V. KAGAN-ZUR
9:15 AM	Winners never cheat; cheaters never win: Species' flexibility and the symmetry of benefit within a mutualism of arbuscular mycorrhizal fungi and plants. PRINGLE, A. *, J.D. BEVER, J. ANTONOVICS
9:30 AM	Arbuscular mycorrhizal specificity, compatibility, and feedback between co-occurring species in a tallgrass prairie. CASTELLI, J.P.
9:45 AM	Local-scale population variation in Cenococcum geophilum on serpentine and non-serpentine soils CUMMING, J.R. *, S.P. MILLER, N.L. SHEETS, D.G. PANACCIONE
10:00 AM	Break
10:15 AM	Evidence of a mycorrhizal mechanism for the adaptation of Andropogon gerardii to high and low-nutrient prairies. SCHULTZ, P.A. *, R.M. MILLER, J.D. JASROW, C.V. RIVETTA, J.D. BEVER
10:30 AM	Nurse plant associations cause shifts in the ectomycorrhizal fungal communities associated with pinyon pine (Pinus edulis). HASKINS, K.E
10:45 AM	Ectomycorrhizal fungal communities in four North American ecosystems: Biodiversity, spatial distribution, and effects of nitrogen fertilization. LANSING, J.L *, M.F ALLEN
11:00 AM	Chestnut oak (Quercus prinus L.) and red maple (Acer rubrum L.) stump sprouts, ectomycorrhiza, and red oak (Quercus rubra L.) seedlings. DICKIE, I.A. *, K.C. STEINER, R.T. KOIDE
11:15 AM	Ectomycorrhizal diversity alters host tree performance in experimental host-symbiont culture conditions. BAXTER, J.W. *, J. DIGHTON
11:30 AM	Spatial effects of retention forestry on ectomycorrhizal diversity of Douglas-fir seedlings. CLINE, E.T.
11:45 AM	Growth responses to mycorrhizal colonization of rainforest seedlings vary with light intensity and plant species. GEHRING, C.A.

Oral Session #9: Respiration and Isotopes.
Presider: R.D. Yanai, SUNY, Syracuse.
Alpine North - Sports Event Center
8:45 AM to 11:30 AM


8:45 AM	Differences in carbon isotope values between above and belowground plant material for 15 semidesert grassland species. BIEDENBENDER, S.H. *, M.P. MCCLARAN, J. QUADE, M.A. WELTZ
9:00 AM	Stable isotope composition of water vapor and CO2 of air in mesquite-C4 grass vegetation. WILLIAMS, D.G. , G. LIN, J. BRUNEL
9:15 AM	Why is a grass blade like a tree ring? An isotopic model for recording environmental data in grass blades. HELLIKER, B.R *, J.R EHLERINGER
9:30 AM	Respiration and growth characteristics in subpopulations of Great Basin cheatgrass have adapted to local microclimates. MCCARLIE, V.W. , B.N. SMITH, L.D. HANSEN, S.E. MEYER
9:45 AM	Seasonal and interannual variations in the isotopic composition of carbon fluxes in a tallgrass prairie ecosystem. STILL, C. *, J. BERRY, M. RIBAS-CARBO, B. HELLIKER, S. VERMA
10:00 AM	Break
10:15 AM	Topographic consideration on evapotranspiration, primary production, and soil respiration: An integrated spatially explicit ecosystem model. KANG, S. *, S. KIM, D. LEE
10:30 AM	Modeling tree stem temperature to estimate wood respiration. KLOEPPEL, B.D. *, M.C. FREEMAN, P.V. BOLSTAD
10:45 AM	Can trees grown in the shade benefit from low respiration rates at elevated CO2? GONZÀLEZ-MELER, M.A. , E. NAUMBURG, D. ELLSWORTH, J.N. SIEDOW, W.H. SCHLESINGER
11:00 AM	13C discrimination during biospheric-atmospheric CO2 exchange: Sources of variation in field studies and models. BUCHMANN, N. , J. KAPLAN
11:15 AM	The isotopic composition of ecosystem respiratory fluxes. FESSENDEN, J.E. *, J.R. EHLERINGER

Poster Session #1: Light Relations.
Cliff Lodge Patio Deck (Site B)
10:30 AM to 12:00 PM


1	Limiting factors to regeneration of large-seeded hardwoods in the Upper Coastal Plain of South Carolina. RILEY, J.M. *, R.H. JONES
2	Photosynthetic response of canopy species in a forest area in eastern Brazilian Amazonia. DIAS-FILHO, M.B. , J.B.M. GUERRERO, D.C. NEPSTAD
3	The relationship between leaf nitrogen and radiation absorption in New Zealand indigenous forests. WHITE, J.D. *, N.A. SCOTT
4	Phenology of Aesculus glabra in relation to temporal patterns of resource availability in a northern Indiana forest. HICKS, D.J.
5	Effects of light and nitrogen availability on the growth, photosynthetic performance and resource use of regenerating tree species in New England forest ecosystems. HARRINGTON, R.A. *, J.H. FOWNES
6	Tree canopy asymmetry at forest gap edges. MUTH, C.C. *, F.A. BAZZAZ
7	Douglas fir seedling growth response to different light environments. SCHAUER, A.J. *, B.J. BOND, S. RADOSEVICH, G.A. RITCHIE, D. WOODRUFF
8	Modeling the light interception and carbon gain of individual fluttering leaves. RODEN, J.S.
9	Fertility and light control canopy dynamics in a fast-growing tropical forest. FOWNES, J.H. *, M.G. RYAN, C. GIARDINA, R.S. SENOCK, D. BINKLEY
10	Concurrence of light availability and root interference in mesic grasslands. DERNER, J.D. *, H.W. POLLEY, H.B. JOHNSON, C.R. TISCHLER
11	Light distribution in mesic grasslands: Spatial patterns and temporal dynamics. WU, X.B. , J.D. DERNER*
12	A comparison of the effects of salinity levels and light levels on the growth of Helianthus paradoxus and Helianthus annuus. MENDEZ, M.O. *, O.W. VAN AUKEN
13	Contrasting shade avoidance responses in two perennial grasses: A comparative field investigation in simulated sparse and dense canopies. MONACO, T.A. , D.D. BRISKE
14	Physiological and morphological limitations to growth: A study of three Asters. PFITSCH, W.A. , P. BUDIHARDJO, J.A. EVANS
15	Light response and drought tolerance in two South Florida Psychotria species. ROBERTS, M.C. *
16	Effects of light and fertilizer addition on the invasive shrub Clidemia hirta (Melastomataceae). DEWALT, S.J. *, K. ICKES
17	Environmental conditions affect chamise, Adenostoma fasciculatum, leaf structure. NAROG, M.G.

Poster Session #2: Mangroves, Salt Marshes, Plankton and Riparian Ecology.
Sports Event Center (Site A)
10:30 AM to 12:00 PM


MANGROVES


18	Plant-soil interactions and redox processes in a Micronesian mangrove forest. GLEASON, S.M. , K.C. EWEL, N.V. HUE
19	Salinity and light effects on the salt balances of the mangroves Rhizophora mangle and Avicennia germinans. SHAFTEL, R. , L. HOFFMAN, N. ANTEN
20	Evidence of anthropogenic-derived sediments in mangrove estuaries. POLSENBERG, J.F. , W.L. NOTT, C.B. FIELD

SALT MARSHES


21	Variation in nitrogen mineralization across forb and graminoid zones of a New England salt marsh. THEODOSE, T.A. *, J.L. MARTIN
22	Effects of habitat fragmentation on salinity and moisture tolerances and the genetic structure of a rare salt marsh plant. THORPE, A.
23	Morphological variation in twelve salt marsh plant species on Sapelo Island, GA. RICHARDS, C.L. *, S.C. PENNINGS, L.A. DONOVAN
24	Intimate links between environmental gradients and distribution of genotypes in a Louisiana Iris hybrid swarm. JOHNSTON, J.A. *, R.A. WESSELINGH, A.C. BOUCK, L.A. DONOVAN, M.L. ARNOLD
25	The tolerance of a marine oligochaete to low levels of dissolved oxygen. LEONARD, C.N. , A.F. HOLLAND, C.A. BARANS, D. GILLET

PLANKTON


26	Maintaining diversity in aquatic systems: The causes and consequences of pigment variation. GERRISH, G.A. *, C.E. CÁCERES
27	Plankton responses to simulated nutrient pulses: Effects of grazer community composition. BROWN, A.C. *, K.L. COTTINGHAM, S.P. GLAHOLT JR.

RIPARIAN ECOLOGY


28	The role of large woody debris in riparian forest regeneration in western Oregon. SARR, D.A. , R.E. MOMSEN, D.E. HIBBS
29	Water diversion alters net primary productivity of a riparian ecosystem in the eastern Sierra Nevada mountains, Inyo County, California. DISALVO, A. , S.C. HART
30	Identifying links between riparian water conditions and diverse terrestrial communities. WILLIAMS, K.S. *
31	Impacts of livestock herbivory on woody species in a central Arizona riparian area. GREEN, D. , P. FENNER, T. WILLARD
32	Riparian zone seedling establishment, dynamics, and the influence of Rhododendron maximum. TAYLOR, S.F. *, B.D. KLOEPPEL, D.C. COLEMAN, B. BECKAGE, J.A. YEAKLEY
33	Landscape patterns in the distribution of riparian plant associations and ecosystem types in the California Sierra Nevada. MERRILL, A.G. *, T.L. BENNING
34	Longitudinal variation in riverine trophic structure: Linkage between flow, sediment and biota. OSMUNDSON, D.B. *, R.J. RYEL, V. LAMARRA, J. PITLICK
35	The Indiana Wetlands Rapid Assessment Protocol: Development and testing. SQUIERS, E.R. *, P. ROTHOCK, R. REBER, R. GRIZZLE
36	Community structure in bison wallows and intermittent streams in tallgrass prairie. GERLANC, N.M. *, R.J. BERNOT, W.K. DODDS
37	Effects of a fluctuating disturbance regime on a riparian wetland seed bank. HOWE, M.M. , M.J.C. KEARSLEY
38	Channelization effects on floodplain nutrient levels. FRANKLIN, S.B. *, S.R. PEZESHKI, N.C.G. VAN GESTEL, M. ELCAN, J.A. KUPFER
39	Restoring connectivity in a large river system: Flood plain restoration in the upper Colorado River basin. CROWL, T.A. *, J.L. GOURLEY, M.J. TOWNSEND, B. LEWIS
40	The potential effects of floodplain restoration on habitat availability and ecosystem structure and function in the upper Colorado River basin. TOWNSEND, M.J. , T.A. CROWL, J.L. GOURLEY, R.H. PHILLIPS
41	An indicator of potential stream wood contribution for riparian forests. RINGOLD, P.L. , M. BOLLMAN, J. VAN SICKLE, J. BARKER, J. WELTY
42	Snag and large woody debris dynamics in riparian forests. BARKER, J.R. *, P.L. RINGOLD, M. BOLLMAN

Symposium # 4: Human Development and Biodiversity Conservation in the Developing World: Finding a Balance in Concept and Practice.
Organized by: R.S. Reid and K. Galvin.
Sponsored by: International Affairs Section.
Ballroom I - Cliff Lodge
1:00 PM to 5:00 PM


1:00 PM	Introduction to conservation and human development issues. REID, R. , K. GALVIN
1:15 PM	Conservation through development of traditional informal institutions in Mongolia CHULUUN, T. *, A. ENHBAT, B. SHURENTUYA
1:45 PM	Integrating conservation into rural development: perspectives from a community-based approach in Latin America MOERMOND, T.
2:15 PM	Integrated assessments and spatial-dynamic ecosystem modeling to assess development-biodiversity interactions in east Africa COUGHENOUR, M.B. *, R.B. BOONE
2:45 PM	Break
3:15 PM	Community based conservation: does it work? GALVIN, K.A.
3:45 PM	Can biodiversity be conserved through human development? REID, R.S.
4:15 PM	Summary of an ESA workshop on conservation and human development.
4:45 PM	Discussion: Where do we go from here?

Symposium # 5: Incorporating Landscape Processes in Ecological Restoration.
Organized by: K.D. Holl, E.E. Crone and C.B. Schultz.
Sponsored by: Applied Ecology Section.
Ballroom II - Cliff Lodge
1:00 PM to 5:00 PM


1:00 PM	Introduction. HOLL, K.D.
1:15 PM	Adaptive restoration: Large-scale experimentation to improve restoration. ZEDLER, J.B.
1:45 PM	Prioritizing wetland restoration and monitoring in coastal Louisiana. STEYER, G.D. , L.A. REYNOLDS, R.E. STEWART JR.*, J.B. JOHNSTON
2:15 PM	Restoring floodplain forest and annual grasslands by incorporating natural disturbance regimes at two sites in California. REINER, R.J.
2:45 PM	Break
3:00 PM	Genetic and evolutionary issues in large scale restoration efforts. RICE, K.J.
3:30 PM	The influence of landscape processes on an endangered butterfly population: deciding where to restore habitat for the Fender's blue SCHULTZ, C.B. *, E.E. CRONE, K.D. HOLL
4:00 PM	Reclaiming industrial disturbances: effects of landscape processes NAETH, M.A.
4:30 PM	Concluding remarks and discussion: How can we incorporate landscape processes in restoration design? CRONE , E.E.

Symposium #6: Ecological Consequences of Adaptive Evolution Among Invasive Species in Terrestrial and Marine Systems.
Organized by: E. Grosholz and J. Maron.
Sponsored by: Long Term Studies Section.
Ballroom III - Cliff Lodge
1:00 PM to 5:00 PM


1:00 PM	Introduction. GROSHOLZ, E. , J. MARON
1:05 PM	Can a decrease in herbivore defense explain the increased competitive ability of invasive non-indigenous plants? BLOSSEY, B. *, V. VASQUEZ, B. MONTGOMERY
1:35 PM	Aquarium trade and success of the green tropical alga Caulerpa taxifolia invading the Mediterranean Sea. MEINESZ, A.
2:05 PM	Invasion and subsequent biological control of St. John's Wort (Hypericum perforatum): rapid evolution of herbivore tolerance? MARON, J. *, C. LUKE
2:35 PM	Increased body size and reduced genetic diversity in invading populations of the European green crab. GROSHOLZ, E. *, G. RUIZ, J. GELLER, M. BAGLEY, R. THRESHER
3:05 PM	Break
3:30 PM	Predicting and interpreting post-invasion evolution. CARROLL, S. *, H. DINGLE
3:50 PM	Reciprocal hybridization and the threat of invasive hybrid Spartina to salt marshes in California. AYRES, D. *, D. STRONG
4:20 PM	Invasion and evolution. VERMEIJ, G.

Oral Session #10: Light Relations in Plants.
Wasatch Room - Cliff Lodge
1:00 PM to 5:00 PM


1:00 PM	Light and temperature effects on the photosynthetic characteristics of boreal C4 and C3 grasses. KUBIEN, D.S. , R.F. SAGE
1:15 PM	Phenotypic plasticity in Smilacina stellata from three habitats: Responses to light manipulations from a developmental perspective. STORK, A.W.
1:30 PM	Light environment controls of native and exotic vine growth. THOMPSON, H.C. , S.T.A. PICKETT, D. WHIGHAM
1:45 PM	Seasonal variation in maximum photosynthetic rates of Alliaria petiolata. MYERS, C.V. *, R.C. ANDERSON
2:00 PM	Spatial patterns in freeze-induced photoinhibition of field-grown Eucalyptus pauciflora. BALL, M.C. *, A.M. GILMORE, A.B. NICOTRA, M. HOFMANN
2:15 PM	Leaf-level and whole-plant assimilation as predictors of tree seedling growth across a broad light gradient. MONTGOMERY, R.A. *
2:30 PM	The effects of light availability and salinity levels on mangrove seedling growth. HOFFMAN, L.L. *, N.P.R. ANTEN, D.D. ACKERLY
2:45 PM	Leaf area distribution and canopy clumping in an old-growth mixed-species podocarp New Zealand rainforest. BROWN, K.J. *, K. GRIFFIN, W. SCHUSTER, D. TISSUE, M. TURNBULL, D. WHITEHEAD
3:00 PM	Break
3:15 PM	Survival and growth of seedlings of 12 Chilean temperate rainforest trees in contrasting light environments: gas exchange and allocational correlates. LUSK, C. , A.L. DEPOZO
3:30 PM	Growth in high light vs. survival in low light as a key tradeoff that determines shade tolerance: A test in a mesic forest in southeast Texas. LIN, J. *, P.A. HARCOMBE, R.W. HALL, M.R. FULTON
3:45 PM	Resource allocation and survival of Paulownia tomentosa seedlings in a managed forest landscape. WILLIAMS, A.C. , B.C. MCCARTHY
4:00 PM	Importance of plant form and microsite to the avoidance of low-temperature photoinhibition in different life stages of conifers in the alpine treeline. GERMINO, M.J. *, W.K. SMITH
4:15 PM	The effect of overstory structure and sky condition on light transmittance in a Longleaf Pine (Pinus palustris) forest. BATTAGLIA, M.A. *, R.J. MITCHELL, M. PU
4:30 PM	Spatial patterning of pigmentation in evergreen leaves in response to freezing stress. NICOTRA, A.B. *, M. HOFMANN, A.D. GILMORE, M.C. BALL
4:45 PM	Within and among population variation in acclimation to light in white spruce. AWADA, T. *, R.E. REDMANN

Oral Session #11: Trophic Cascades.
Presider: R.O. Hall, Jr., University of Wyoming.
Magpie Room - Cliff Lodge
1:00 PM to 5:15 PM


1:00 PM	A conceptual clarification of complexity and its application in small aquatic systems. PUTH, L.M. , T.F.H. ALLEN
1:15 PM	Bacterial information length as a predictor of stream health. MCARTHUR, JVAUN *, R.C. TUCKFIELD
1:30 PM	Interactions between bacteria and phytoplankton affect algal response to nutrients and dissolved organic matter. KLUG, J. *
1:45 PM	Effects of species diversity and environmental variability on community and ecosystem properties in an aquatic microcosm experiment. PETCHEY, O. *, T. CASEY, L. JIANG, J. JOHNSON, Y. KATO, T. MCPHEARSON
2:00 PM	Effects of omnivorous fish on the stability of aquatic food webs. VANNI, M.J. , S.J. HARPER*
2:15 PM	Trophic interactions of large-piscivorous and small-omnivorous fishes in freshwater marshes of the Florida Everglades. CHICK, J.H. *, J.C. TREXLER
2:30 PM	Food web complexity and the response of aquatic systems to stress. BREITBURG, D.L. *, C.E. RICHMOND, S.M. BARTELL
2:45 PM	Effects of enrichment on a 3-level food chain with omnivory. DIEHL, S. *, M. FEISSEL
3:00 PM	Break
3:15 PM	Priority effects determine the outcome of competition between species with similar competitive abilities. LONG, Z.
3:30 PM	Can functional redundancy in primary producer assemblages and variability in consumer populations buffer communities from multiple stressors? RICHMOND, C.E. *, D.L. BREITBURG, K.A. ROSE
3:45 PM	Prey-induced size polymorphism in a ciliate predator. KOPP, M. *, R. TOLLRIAN
4:00 PM	Unraveling the bifurcation structure of a live predator-prey system. FUSSMANN, G.F. *, S. ELLNER, N.G. HAIRSTON JR.
4:15 PM	Detritivory, trophic shunt and the apparent trophic cascade hypothesis. DONG, Q.
4:30 PM	Migration, nutrient transport, and dynamics in source-sink metapopulations. HOLYOAK, M. , M.J. DONAHUE
4:45 PM	Is scale transition theory a useful tool for understanding spatial dynamics? DONAHUE, M.J. , M. HOLYOAK
5:00 PM	Testing simple models of keystone predation. FOX, J.W.

Oral Session #12: Roots.
Presider: J.L. Lansing, San Diego State University.
Superior Room - Cliff Lodge
1:30 PM to 4:30 PM


1:30 PM	The response of fine roots to nutrient additions in disturbed black spruce ecosystems. SMITH, C.K. , A.D. MUNSON, M.R. COYEA
1:45 PM	How long do roots live? A 13C tracer technique for assessing fine root longevity in a North Carolina pine forest. MATAMALA, R. *, M.A. GONZALEZ-MELER, W.H. SCHLESINGER
2:00 PM	The impacts of soil moisture and temperature on longleaf pine (Pinus palustris) fine root dynamics. STEVENS, G.N. *, R.H. JONES, R.J. MITCHELL, S.L. HURST, S.D. PECOT
2:15 PM	Fine-root production, turnover and soil CO2 efflux in pine and poplar plantations. COLEMAN, M.D. *, R.E. DICKSON, J.G. ISEBRANDS
2:30 PM	Root decomposition and nutrient budgets in roots from an oak-hickory forest in southern Ohio: Influence of landscape position and fire regime. DRESS, W.J. *, R.E.J. BOERNER
2:45 PM	Fine root dynamics of a developing forest in response to nitrogen. BENO, C.C. *, M.D. COLEMAN, A.L. FRIEND
3:00 PM	Break
3:15 PM	Insecticide treatment increases fine root longevity in peach (Prunus persica). WELLS, C. , D. EISSENSTAT, D.M. GLENN
3:30 PM	Age dependent respiration of fine apple roots. VOLDER, A. *, D.M. EISSENSTAT
3:45 PM	The responses of fine roots on patches of water and nitrogen in two dominant Mojave Desert shrubs. OBRIST, D. *, J.A. ARNONE
4:00 PM	Global patterns of root turnover evaluated for vegetation, climatic, and physiological variables. GILL, R.A. , J. LORETI, R.B. JACKSON
4:15 PM	Beyond Weaver: The relationship between the structure of root systems and resource utilization CRAINE, J.M. , D.A. WEDIN, F.S. CHAPINIII, P.B. REICH,

Oral Session #13: N Fixation and Biochemical Patterns.
Presider: D.E. Hibbs, Oregon State University.
Maybird Room - Cliff Lodge
1:00 PM to 3:45 PM


1:00 PM	Erosion and the regeneration of nutrient supply on an old tropical landscape. VITOUSEK, P.M. *, O.A. CHADWICK, L. DERRY, P.A. MATSON, E. MECKING, V.M. MONASTRA
1:15 PM	Biogeochemical patterns along gradients in soil type and land use history in southwestern Costa Rica: Comparisons to the central Amazon. TOWNSEND, A.R. *, C.C. CLEVELAND, M.E. LEFER, G.P. ASNER, B. CONSTANCE
1:30 PM	Nitrous oxide mole ratio during denitrification in soil: Evidence for an interaction of ecosystem and recent moisture history. BERGSMA, T.T. *, N.E. OSTROM, G.P. ROBERTSON
1:45 PM	Effects of drawdown on phosphorus dynamics of a subtropical wetland. WHITE, J.R. , K.R. REDDY, I. CALZADA-BUJAK
2:00 PM	What makes the desert bloom? The contribution of dust and crusts to soil fertility on the Colorado Plateau. BELNAP, J. , R.L. REYNOLDS, M. REHEIS, S.L. PHILLIPS
2:15 PM	A modeled analysis of N and P limitation in disturbed tropical forests. HERBERT, D.A. *, M. WILLIAMS, E.B. RASTETTER
2:30 PM	Nitrogen limitation and ecosystem self-organization: The effects of spatial heterogeneity. JENERETTE, G.D. *, J. WU, N.B. GRIMM
2:45 PM	Effects of introduced trees on soils in a Hawaiian montane rainforest. LEVY, E.T. *, P.M. VITOUSEK
3:00 PM	Break
3:15 PM	A theoretical examination of symbiotic N fixation. RASTETTER, E.B. , P. VITOUSEK, C. FIELD, G. SHAVER, D. HERBERT
3:30 PM	Do pines fix nitrogen? MH KNOPS, J.

Oral Session #14: Disturbance Effects on Bird Populations.
Presider: S.E. Sable, Louisiana State University.
Cottonwood Room I - Sports Event Center
1:00 PM to 4:45 PM


1:00 PM	The effects of resource-imposed nesting aggregations on nesting success in Loggerhead Shrikes in Southwest Oklahoma. ETTERSON, M.A.
1:15 PM	Prescribed burning to restore mixed-oak communities in southern Ohio: Effects on breeding bird populations. ARTMAN, V.L. , J.F. DOWNHOWER
1:30 PM	Effects of prescribed burns on abundance and habitat selection of wintering cavity-nesting birds. BATEMAN, H.L. , M.A. O'CONNELL
1:45 PM	Spatially scaled response of a Lazuli Bunting population to fire: Further evidence for hierarchical habitat selection in birds. LEIDOLF, A. *, T. NUTTLE, M.L. WOLFE
2:00 PM	Effects of landscape structure on avian community compostion and probability of occurrence in fire-dominated Mediterranean ecosystems. RECHEL, J.L. , D.M. FREEMAN, D.A. LARSON
2:15 PM	Exotic herbivores facilitate the near extinction of an insular mesopredator. ROEMER, G.W. *, D.K. GARCELON, T.J. COONAN
2:30 PM	Linking avian communities, riparian vegetation, and geomorphology along a prairie river, USA. SKAGEN, S.K. *, M.L. SCOTT, M.F. MERIGLIANO
2:45 PM	Response of avian assemblages to fragmentation in a tropical rain forest in Kenya. MAINAGITOGO, G. , W.M. JACKSON
3:00 PM	Break
3:15 PM	Spatial dispersion of migratory shorebirds at the continental scale: Implications for conservation. PAYNE, L.X. *, B.A. HARRINGTON, S.A. TEMPLE
3:30 PM	Current consequences of an ancient introduction: Rats, island characteristics and colonial nesting birds in the Mediterranean. MARTIN, J. , J. THIBAULT, V. BRETAGNOLLE
3:45 PM	Human settlement and avian communities in lowland riparian areas. MILLER, J.R. , J.A. WIENS, N.T. HOBBS
4:00 PM	Pond selection and use by migrating trumpeter swans in Southern Alberta. LAMONTAGNE, J.M. *
4:15 PM	Sex-biased dispersal affects source-sink dynamics of a parrot metapopulation. BEISSINGER, S.R. *, B.K. SANDERCOCK
4:30 PM	Assessing the impacts of landscape change on mobile animals. SISK, T.D. *, B.R. NOON, H.M. HAMPTON

Oral Session #15: Parasitoids and Diseases.
Presider: D.M. Franke, University of California, Irvine.
Cottonwood Room II - Sports Event Center
1:00 PM to 5:15 PM


1:00 PM	Polyphagous hosts and the stability of host-parasitoid interactions. INOUYE, B.
1:15 PM	Host selection among parasitoids of macrolepidoptera: A matter of host taxa, susceptibility or availability? BARBOSA, P. *, A. CALDAS
1:30 PM	A multi-taxa assessment of the effectiveness of caterpillar defenses against parastioids GENTRY, G. , L. DYER
1:45 PM	The community ecology of tachinid-host interactions. STIREMAN III, J.O.
2:00 PM	Larval competition between two parasitoids in the California red scale system: Implications for coexistence and biological control. BORER, E.T.
2:15 PM	Apparent competition in heterogeneous environments. BONSALL, M. *, M. HASSELL
2:30 PM	Host switching: The roles of choice, performance, and host phenology. WHIPPLE, A.V. *, M.P. BREMER, W.G. ABRAHAMSON
2:45 PM	The influence of seasonality on parasitoid coexistence and host abundance. BRIGGS, C.J. *, J. LATTO
3:00 PM	Break
3:15 PM	Implications of within-host carbon uptake patterns on the distribution and performance of a cynipid gall-former. GALUSKY, P. *, J.R. OTT
3:30 PM	The role of parasitoids in determining gall size and success of a host-specific cynipid. REYNOLDS, R.J. *, J.R. OTT
3:45 PM	Turning the tides: Gall-insects benefit from plant defense biochemistry. ALLISON, S.D. *, J.C. SCHULTZ
4:00 PM	Factors in the control of parasite population that has abundant hosts: Cuscuta salina in the salt marsh. CUMMINS, K. *, D.H. DEUTSCHMAN
4:15 PM	Parasitic fungus mediates vegetation change in nitrogen exposed boreal forest. STRENGBOM, J. , A. NORDIN, T. NÄSHOLM, L. ERICSON
4:30 PM	Incidence and spread of white pine blister rust: Implications for disease dynamics. MALONEY, P.E. *, D.M. RIZZO
4:45 PM	Disease resistance in Arabidopsis increases the probability of long-term ecological success. DAMGAARD, C. , B.D. JENSEN
5:00 PM	Inference from the spatial pattern of disease: Evidence for spore showers of Phytophthora infestans in the highland tropics. GARRETT, K.A. *, G.A. FORBES, A.M. SMITH, C.C. MUNDT, L.V. MADDEN, R.J. NELSON

Oral Session #16: Plant Demography: Trees and Shrubs.
Presider: B. Boeken, Ben-Gurion University of the Negev.
Cottonwood Room III - Sports Event Center
1:00 PM to 5:15 PM


1:00 PM	Ecophysiology and phenology of chaparral shrubs: A multivariate, comparative study. ACKERLY, D.D. *, K.P. STARMER
1:15 PM	Positive interactions under nurse-plants: Spatial scale, stress gradients and benefactor size. LLOYD, J.D. *, J.J. TEWKSBURY
1:30 PM	Bush encroachment as an integral part of savanna dynamics. WIEGAND, K. *, D. WARD, D. SALTZ
1:45 PM	Allometric relationship between tree diameter and total aboveground biomass may be more species independent than previously thought. CHOJNACKY, D.C. , J.C. JENKINS
2:00 PM	Investigations in relative abundance: a comparison of size distributions of co-occurring, congeneric Mexican trees. KELLY, C.K.
2:15 PM	A comparison of aboveground structure and litter production of Atlantic white cedar swamps in northeastern North Carolina. DEBERRY, J.W. *, R.T. BELCHER, D.T. LOOMIS, R.B. ATKINSON
2:30 PM	Forest decline assessment of northern hardwood forests in the southern Appalachians. NICHOLAS, N.S. , C. HUBER, W. JACKSON
2:45 PM	Dendrochronological analysis of white oak (Quercus alba L.) growing across a topographic moisture gradient in southern Ohio. RUBINO, D.L. *, B.C. MCCARTHY
3:00 PM	Break
3:15 PM	Disentangling the effects of dispersal, distance- and density-dependent mortality on distributions of trees. HILLERISLAMBERS, J. , J.S. CLARK
3:30 PM	Does dense sugar maple regeneration in gaps reduce herbaceous understory species richness in western Great Lakes conifer-hardwood forests? SCHULZ, K. *, J. ZASADA, K. KAHL, E. NAUERTZ, D. BUCKLEY
3:45 PM	Separating dispersal and environmental effects in an eastern deciduous forest. PIERCE JR., K.B. , D. URBAN
4:00 PM	Influence of site quality and disturbance in central Appalachian deciduous forests. SMALL, C.J. *, B.C. MCCARTHY
4:15 PM	The differential influence of site and soil characteristics on invasibility of forest communities. HOWARD, T.G. *, J.K. GUREVITCH, K. BROWN, W. FANG, R. MISRA
4:30 PM	Jack Pine (Pinus banksiana Lamb.) population dynamics at its eastern distribution limit in Quebec. BABEAU, M. *, L. SIROIS
4:45 PM	Size-based demography of long-lived organisms. PHILIPPI, T.
5:00 PM	Morphological variation of Pinus flexilis, a bird-dispersed pine, across a range of elevations. SCHOETTLE, A.W. , S.G. ROCHELLE

Oral Session #17: Mammalian Herbivory.
Presider: R.J. Collins, University of Pittsburgh.
Cottonwood Room IV - Sports Event Center
1:30 PM to 5:00 PM


1:30 PM	Do ground-dwelling mammals promote high tropical tree diversity: Testing Janzen-Connell at the community level. CARSON, W.P. *, S. SCHNITZER, H. STEVENS
1:45 PM	Rodent effects on synthetic tallgrass assemblages. HOWE, H.
2:00 PM	Root and/or shoot competition: Critical mechanisms for survival in a grazed environment. WALLACE, L. *
2:15 PM	Contrasting effects of mammalian herbivore guilds on plant community structure. BEEBEE, M.D. , L.R. FOX*
2:30 PM	Predation risk and food quantity in the selection of habitat by black tailed jack rabbit (Lepus californicus): An optimal foraging approach. MARIN, A. , L. HERNÁNDEZ, J.W. LAUNDRÉ
2:45 PM	Cattle use of prairie dog towns on the shortgrass steppe of Colorado. GUENTHER, D.A. *, J.K. DETLING
3:00 PM	Break
3:15 PM	Eat green but not any green! Consequences of ungulate introduction on an long-lived tree species. VOURC'H, G. , B. VILA, D. GILLON, T.P. CLAUSEN, J. ESCARRÉ, J. MARTIN
3:30 PM	Effects of summer grazing by reindeer on composition of vegetation, productivity and nitrogen cycling. OLOFSSON, J. , H. KITTI, P. RAUTIAINEN, S. STARK, L. OKSANEN
3:45 PM	Impact of white-tailed deer foraging on prairie forbs. NELSON, D.L. , R.C. ANDERSON*
4:00 PM	Reproductive compensation by wild carrot, Daucus carota: The interaction of plant competition and mammalian herbivory. SACCHI, C.F. *, J.L. DOOLEY
4:15 PM	Persistence or extinction: A demographic analysis of elevated herbivore pressure in an herbaceous understory community. KNIGHT, T. *, S. KALISZ, L. SMITH, J. DAVIS
4:30 PM	Elk and bison: Foraging in the landscape of fear of Yellowstone National Park . LAUNDRÉ, J.W. , L. HERNÁNDEZ
4:45 PM	Ecology of fear: Foraging games between owls and gerbils . BROWN, J.S. *, B.P. KOTLER, A. BOUSKILA

Oral Session #18: Mangrove Ecology.
Presider: J.F. Polsenberg, Carnegie Institute of Washington.
Alpine North - Sports Event Center
1:30 PM to 3:00 PM


1:30 PM	Ecological relationships of Scylla serrata in the Federated States of Micronesia: Modeling strategies for mangrove resource management. BONINE, K.M. *, K.C. EWEL, R.L. NAYLOR, R.D. HAUFF
1:45 PM	The influence of seed predation and site factors on the establishment of Xylocarpus granatum, a high-value mangrove species in Micronesia. KRAUSS, K.W. *, J.A. ALLEN, R.G. HAUFF
2:00 PM	Propagule predation dependent on canopy disturbance controls regeneration of a Caribbean mangrove. SOUSA, W.P.
2:15 PM	Effects of pre-dispersal predation by insects on recruitment of the grey mangrove Avicennia marina. MINCHINTON, T.E. , M. DALBY-BALL
2:30 PM	An alternative method for estimating above-ground production in mangrove communities of Biscayne National Park, Florida. ROSS, M.S. , P.L. RUIZ
2:45 PM	Estimating mangrove harvest rates. HAUFF, R.D. *, K.C. EWEL
3:00 PM	Break

Poster Session #3: Education.
Cliff Lodge Patio Deck (Site B)
3:30 PM to 5:00 PM


43	Non-indigenous, invasive species: Education and control using volunteers. KRASNY, M.E. *, S. LEE
44	K-12 environmental science education on the US-Mexican Border. BESTELMEYER, S. *, P. HYDER, E. FREDRICKSON, K. HAVSTAD, J. HERRICK, L. HUENNEKE, J. ATCHLEY
45	Public education and forestry practices in the Northern Hardwood Forest. WADE, G.L. *, M.J. TWERY, M. RECHLIN, M.J. STORY
46	Chilipeppers, climate change, and Cobb Douglas functions: Innovations in ecological education. ALEXANDER, S.E. *, M.G. DALTON
47	Ecological Lessons From Martha Stewart. EHMANN, W.J. *
48	Restoration ecology service learning for non-majors: Experiencing science and scientists in action. JABLONSKI, L. , M. GUGGENBILLER
49	Urban ecology and urban schools: A model for encouraging long-term research with school children and teachers. ELSER, M.M. *, S.L. WILLIAMS
50	Involving the public in long-term research: An educational solution to the problem of funding open-ended studies in population biology. RAY, C. *
51	The campus ecosystem: Temperatures. JACK HAYES, D. *
52	A digital site of pedagogical and interactive information to teach ecology developed through the ESA. MUSANTE, S. *, C. D'AVANZO, B. GRANT
53	A pilot program for engaging students in ecological research: Studies of succession in urban environments. YOSHIDA, L.C. *, J.D. BEVER
54	Dendropedagogy: Teaching basic ecological and biostatistical principles through tree-ring studies. MCCARTHY, B.C. *, D.L. RUBINO
55	Video imagery: A communication tool for ecological studies. MCCRUMB, A.D. *, M.B. COUGHENOUR, D.S. OJIMA, T.J. STOHLGREN, R.G. WOODMANSEE
56	The status of urban ecology in Australian cities. HAHS, A.K. *, M.J. MCDONNELL
57	The Researching amphibian numbers in Alberta (RANA) Project: Combining public education and amphibian monitoring. EATON, B. *, C. PASZKOWSKI, L. TAKATS
58	Increasing minority involvment in ecology. HILEMAN, D.R. *, R.O. ANKUMAH, K.C. DAY, J.S. HISHAW, I.N. MOORE, L.B. PREVOST, Y.B. QADIMÆASIL, C.O. WILLIAMS
59	Impact of out-door-ecological education on students at Oakwood College. ONWERE, C. *, P.P. TADI-UPPALA, M. BYFIELD, J. DAVID
60	The development of environmental and ecological programs at Howard University. MIDDENDORF, G. *, M. POSTON, M. MCKENNA
61	Imprint of the past: Ecological history of New Bedford Harbor. PESCH, C.E. *, R.A. VOYER, J. GARBER

Poster Session #4: Reproductive Ecology, Climate Change, Conservation Ecology, Water Relations.
Sports Event Center (Site A)
3:30 PM to 5:00 PM


REPRODUCTIVE ECOLOGY


62	Microcalometric studies on metabolism and germination in response to temperatire for three populations of winterfat (Eurota lanata). THYGERSON, T. *, D.T. BOOTH, J.M. HARRIS, L.D. HANSEN, B.N. SMITH
63	Down the tube: Predators, pollinators and the evolution of flower shape in Polemonium viscosum (Polemoniaceae). CUBA, J. , C. GALEN
64	Phenotypic selection on floral traits of Lobelia cardinalis and Lobelia siphilitica: Interspecific and interpopulation variation. CARUSO, C.M.
65	Seed banks of Iliamna longisepala (Malvaceae), a rare, fire dependent plant from Washington State. FUENTES, T.L. *, J.C. STROMBERG
66	Potential physiological efficiency of reproduction in native and alien plant species. MCDOWELL, S.C.L. *
67	Seed dynamics of Juniperus virginiana L. in western Nebraska. HUDDLE, J.A. , J. STUBBENDIECK, J. BROLLIER
68	Temporal change in cone sex ratio in Pinus densiflora. KANG, H.
69	Recalcitrant behavior of cherrybark oak seed. SOWA, S. *, K.F. CONNOR
70	Sucrose accumulation as a response to desiccation in Quercus alba L. acorns: A natural glycoprotectant. CONNOR, K.F. *, S. SOWA

CLIMATE CHANGE


71	Intercomparison of global scale ecological models and field data. OLSON, R.J. *, K. HIBBARD, J.M.O. SCURLOCK, K.J. JOHNSON
72	Modelling climatic constraints of the diversity of plant species and lifeforms. KLEIDON, A. *, H.A MOONEY
73	Will changing the amount of timing of precipitation affect plant species composition in sagebrush steppe? MORRIS, A.N. *, J.E. ANDERSON
74	Ephemeral plant responses to El Niño Current in a semiarid ecosystem of northcentral Chile. GUTIERREZ, J.R. *, P.L. MESERVE
75	Warming and clipping effects on tallgrass prairie: A preliminary study and its implication for global change. WAN, S. *, Y. LUO, L.L. WALLACE, L. FARBER, P. KORES, L.R. KRUMHOLZ, M. HOEFNAGELS
76	Grassland responses to altered rainfall regimes: Mechanisms for productivity and species composition responses to increased inter-rainfall intervals. CARLISLE, J.D. , P.A. FAY, A.K. KNAPP, J.M. BLAIR
77	A field test of the effect of climate change on Poa sandbergii. LINK, S.O. *, H. BOLTON, JR., J.L. SMITH
78	Geographic variation in soil organic carbon dynamics following land-use change in Costa Rica. POWERS, J.S.
79	Energy flows in peatlands and their responses to heat and water loading. CHEN, J. , S. BRIGHAM, J. PASTOR, J. WELTZIN, X. WANG, C. HARTH, B. DEWEY, J. KELLER, K. UPDEGRAFF
80	An elevated soil temperature and water table manipulation experiment in the Arctic tundra ecosystem at Barrow, Alaska. KINOSHITA, G.Y. , W.C. OECHEL, R.C. ZULUETA, S.J. HASTINGS
81	Spatial variability in 20th century tree growth at arctic and alpine treelines in Alaska. LLOYD, A.H. *, C.L. FASTIE
82	Dendroecology of Pinus ponderosa in the Okanogan National Forest, WA. KUSNIERCYZK, E. , G. ETTL
83	Comparison of biometric and eddy-covariance based estimates of annual Net Ecosystem Production in a northern hardwood forest ecosystem. CURTIS, P.S. *, C.S. VOGEL, H. PETER SCHMID, H. SU, B.D. BOVARD, A.E. HARTLEY
84	Potential impacts of global warming on western coniferous forests. BACHELET, D. *, R.P. NEILSON, J.M. LENIHAN, R.J. DRAPEK
85	Genetic vs. environmental control of respiration in jack pine in contrasting climates. TJOELKER, M.G. *, J. OLEKSYN, P.B. REICH
86	Climatic responses of old-growth Pinus elliottii var. densa in mesic pine flatwoods Florida, USA. FORD, C.R. *, J.R. BROOKS

CONSERVATION ECOLOGY


87	Pollinator guild composition shifts with 70 years of habitat fragmentation: The bees of Larrea. CANE, J.H. , R. MINCKLEY, L. KERVIN, T'AI ROULSTON
88	Euglossine bees as indicators of the conservation status of Atlantic Forest fragments in Rio de Janeiro State, Brazil. TONHASCA JR., A. , J.L. BLACKMER, G.S. ALBUQUERQUE
89	Area requirements of Gopher Tortoises (Gopherus polyphemus): Re-evaluating guidelines for estimating reserve size. OTT, J.A. , J.W. HOLLISTER, C. GUYER, W.K. MICHENER*
90	The epizootiology of cutaneous leishmaniasis in the Negev and the Arava, Israel: The role of human activity. WASSERBERG, G. *
91	A spatial analysis of multiple indices with implications for conservation management. KARISH, K.S. *, T.C. EDWARDS, JR., J. DENORMANDIE, M.R. STEVENSON
92	Patterns of fluctuating asymmetry and genetic diversity across the distribution range: A focus on ecotones. KARK, S. *, U.N. SAFRIEL, I. NOY-MEIR, E. RANDI
93	Incorporating regional-historical perspectives into conservation of uncommon plant communities: A study of the northeastern Coastal Region. MOTZKIN, G. *, D.R. FOSTER, B. HALL, J. HARROD, T. PARSHALL
94	Predicting rarity in vascular plants: The roles of phylogeny and biogeography. SCHWARTZ, M.W. , C.A. BRIGHAM, K.G. LYONS
95	Evaluation of extinction risk factors in American ginseng (Panax quinquefolium). ANDERSON, M.R. *, S.S. LOEW
96	Effects of natural variation in local density on ginseng. SPENCER, S.M. , E.E. HACKNEY, J.B. MCGRAW
97	Decline in stature of American Ginseng plants over two centuries. MCGRAW, J.B. *
98	Integrated soil and vegetation monitoring for grassland, shrubland and savanna ecosystems. HERRICK, J.E. , J. VAN ZEE, A. MELGOZA, K.M. HAVSTAD, W.G. WHITFORD
99	Assessing representation of terrestrial ecological diversity among current and potential conservation lands in the Mojave Desert Ecoregion COMER, P.J. *, D. DORFMAN, B. CHOLVIN
100	Rapid PCR based tests to determine species identity: An aid to the management and conservation of threatened sympatric salmonids. GREIG, C. , J.M. ROBERTSON, M.A. BANKS
101	How to know when you know you don't know: Survey reliability when observability varies. FIELD, S.A. , A.J. TYRE, H.P. POSSINGHAM

WATER RELATIONS


102	Leaf dynamics of longleaf pine (Pinus palustris) stands across an environmental gradient. MCCONVILLE, D.J. *, M.P. SHEFFIELD, S.B. JACK, R.J. MITCHELL
103	Bordered pit structure and vessel wall surface properties - Implications for embolism repair. ZWIENIECKI, M.A. , N. HOLBROOKMICHELE
104	Differences in leaf gas exchange and water relations among riparian woody species along a diverted mountain stream in the eastern Sierra Nevada. ALSTAD, K.P. , S.C. HART
105	Individual responses to water deficit in the riparian tree Populus fremontii. LEFFLER, A.J.
106	Size-dependent separation of two co-dominant woody species along an environmental gradient as related to differences in depth of water acquisition. BARNES, F.J. *, S.N. MARTENS, D.D. BRESHEARS
107	Relationships between tree size, soil water content and predawn plant water potential in an oak woodland in Oregon . GEHRES, N.T. *, N. PHILLIPS, A. SCHAUER, N.G. MCDOWELL, B.J. BOND, M.G. RYAN
108	Seasonal and radial variation in sapflow of riparian red alder. MCCARTHY, H. , M. VAN HORNE, S. MCNULTY, N. PHILLIPS, B.J. BOND
109	Relation of water transport to leaf gas exchange properties in three mangrove species SOBRADO, M.A.
110	Variation in water availability and plant physiological characteristics among species occupying a substrate and rainfall matrix in Hawaii. SANDQUIST, D.
111	Hydraulic properties of Galax urceolata, an evergreen, understory herb of the southern Appalachians. SOBIERAJ II, J.H. , J.K. MCCARRON III, H.S. NEUFELD
112	Trees on the edge: Water relations and leaf carbon isotope discrimination in a Chihuahuan Desert wash. TRAFTON, A. , K.R. HULTINE, D.G. WILLIAMS
113	Seasonal water relations of juvenile and adult sagebrush (Artemisia tridentata ) in the Columbia Basin, Washington. KHAN, F. *, J.L. DOWNS
114	The contribution of deep root functioning to water relations and xylem transport in Juniperus ashei. POCKMAN, W.T. , J. MARTÍNEZ-VILALTA, R.B. JACKSON
115	Influence of environment on timing and amount of Utah juniper twig growth. SMITH-LONGOZO, V.L. *, R.S. NOWAK, R.J. TAUSCH
116	Effects of soil moisture substrate characteristics on mesquite water relations and leaf carbon isotope ratios in semi-desert grasslands. KOEPKE, D.F. , D.G. WILLIAMS, A. FRAVOLINI
117	Rooting of Eastern gamagrass. WILLIAMS, C.O. *, E. RHODEN
118	Effects of early summer frosts on the hydraulic and stomatal conductance of a deciduous arctic species (Salix pulchra). GORSUCH, D.M. *, S.F. OBERBAUER, J.B. FISHER
119	The effects of soil moisture and mycorrhiza on two species of goldenrod. YOUNG, L.M. *, A.V. WHIPPLE, W.G. ABRAHAMSON
120	Turgor changes in the epidermis of Vicia faba leaves are consistent with hydraulic coupling among stomata. MOTT, K.A. *, P.J. FRANKS
121	Drought stress, plant water status and sex allocation in Epilobium angustifolium (Onagraceae). CARROLL, A.B. *, C. GALEN

Monday, August 7, 2000

Symposium # 7: Thirty Questions for Ecology in the 21st Century.
Organized by: J. Gurevitch and N. Huntly.
Sponsored by: Awards and Research Committees.
Ballroom I - Cliff Lodge
8:00 AM to 12:00 PM


8:00 AM	Introduction: Thirty questions for ecology. HUNTLY, N.
8:15 AM	Proclaiming a new subdiscipline of ecology. SLOBODKIN, L. *
8:35 AM	The technology and sociology of information use in ecology. REICHMAN, O.J.
8:55 AM	To boldly go: Research frontiers in ecology. COTTINGHAM, K.L.
9:15 AM	Evolutionary ecology of species interactions: The importance of phenotypic plasticity. AGRAWAL, A.A.
9:35 AM	"La plus ca change..." Integrating ecology and evolutionary biology HOLT, R.D.
9:55 AM	Break
10:10 AM	Pressing questions for ecosystem science to 2100 A.D. SCHLESINGER, W.H. *
10:35 AM	Changing the role of ecology to address a rapidly changing world. EVINER, V.T.
10:55 AM	Three questions for ecology. JAMES, F.C.
11:15 AM	What can ecology contribute to a people-dominated world? JENSEN, D.B.
11:35 AM	Do not forecast the future-Create it. HOLLING, C.S.
11:55 AM	Summary: Ecology for the next hundred years. GUREVITCH, J.

Symposium # 8: Ten Years of the Sustainable Biosphere Initiative.
Organized by: Mary Barber and Pam Matson.
Sponsored by: SBI Committee.
Ballroom II - Cliff Lodge
8:00 AM to 12:00 PM


8:00 AM	Introduction.
8:10 AM	The origins of the Sustainable Biosphere Initiative: Debates, discussions, and visions. LUBCHENCO, J.
8:30 AM	National perspectives on the Sustainable Biosphere Program: Influence and response in the US Government and beyond. JANETOS, T.
9:00 AM	Ecological contributions to global change research . HOLLAND, E.A.
9:45 AM	Break
10:00 AM	Biological diversity: Research successes in the 1990s and directions for the future . DOBSON, A.
10:45 AM	Repairing ecosystems: Advances in ecological restoration in the 1990s. ALLEN, E.
11:30 AM	Ecology and sustainability at the beginning of the 21st Century: Next steps in the international community. MOONEY, H.

Symposium # 9: The Water Limitation: Issues in Plant, Community, and Ecosystem Water Use.
Organized by: L. A. Donovan and J.S. Sperry.
Sponsored by: Southeastern Chapter.
Ballroom III - Cliff Lodge
8:00 AM to 12:00 PM


8:00 AM	Water movement in plants: Tension among the ranks. HINCKLEY, T.M. *, J. ROMBOLD
8:25 AM	Embolism repair: Can we exorcize Maxwell's demon? HOLBROOK, N.M. , M.A. ZWIENIECKI, P.J. MELCHER
8:50 AM	Hydraulic architecture and stomatal action. SPERRY, J.S. *, R. OREN, J.P. COMSTOCK
9:15 AM	Soil drying and atmospheric stress can combine to affect shoot growth and functioning through chemical signalling. DAVIES, B. *, S. WILKINSON
9:40 AM	Break
9:55 AM	Hydraulic lift and uptake of water and nutrients. RYEL, R.J. *, M.M. CALDWELL
10:20 AM	Disequilibrium between predawn plant and soil water potentials. DONOVAN, L.A. *, M.J. LINTON, J.H. RICHARDS
10:45 AM	Ecophysiology of plant water use: Convergence from leaf to tree. MEINZER, F.C. , G. GOLDSTEIN
11:10 AM	Hydraulic constraints on productivity of old growth trees. BOND, B.J. *, M.G. RYAN, N. PHILLIPS, N.G. MCDOWELL, R.M. HUBBARD
11:35 AM	Controls on ecosystem water use. OREN, R. , K.V.R. SCHÄFER, G.G. KATUL, K. LIU, J.S. SPERRY

Oral Session #19: Grassland Restoration.
Presider: B.J. Wilsey, Texas A&M University, Commerce.
Wasatch Room - Cliff Lodge
8:00 AM to 11:45 AM


8:00 AM	Factors influencing invasion of southern Californian grasslands by the herbaceous perennial mediterranean climate exotic, Cynara cardunculus. DESIMONE, S.A.
8:15 AM	Using prescribed fire and nitrogen manipulation to control Melilotus officinalis and M. alba: Rocky Mountain National Park, WOLF, J.J. , S.W. BEATTY, T.R. SEASTEDT
8:30 AM	Physiological ecology of juvenile oaks: Implications for forest expansion in grasslands. DANNER, B.T. *, A.K. KNAPP
8:45 AM	Changes in semi-desert grassland plant communities 10 years following cessation of grazing and reintroduction of fire. GEIGER, E.L. *, G.R. MCPHERSON
9:00 AM	Sawdust addition reduces soil ammonium levels and promotes native grass growth in competition with exotic grasses. CORBIN, J.D. , C.M. D'ANTONIO
9:15 AM	Addition of sawdust to soils to enhance native grass persistence following removal of introduced nitrogen-fixing shrub. HAUBENSAK, K.A. *, C.M. D'ANTONIO
9:30 AM	Natural resistance to cheatgrass invasion: The role of limiting resources. BECKSTEAD, J. *, C.K. AUGSPURGER
9:45 AM	Species composition, species richness, and soil disturbance affect grassland susceptibility and response to invasion. DUKES, J.S.
10:00 AM	Break
10:15 AM	C3 woody plant invasion in a C4 grassland: Are grasses and shrubs functionally equivalent? MCCARRON, J.K. , A.K. KNAPP
10:30 AM	Evaluation of surface mine reforestation in south-central West Virginia . EDMONDS, S.N.
10:45 AM	Exotic species invasions over forty years of old field succession. MEINERS, S.J. *, M.L. CADENASSO, S.T.A. PICKETT
11:00 AM	Competitive effects of an introduced species, Hieracium aurantiacum, on a native congener. HOWE, K.M.
11:15 AM	Relationship between Lythrum salicaria (purple loosestrife) abundance and vegetation characteristics in southeastern Minnesota wetlands. HAGER, H.A.
11:30 AM	Species richness does not always enhance productivity: Priority effects and competition for space in wetland plant communities. ENGELHARDT, K.A.M. *, M.E. RITCHIE, J.A. KADLEC

Oral Session #20: Riparian Ecology.
Presider: D.A. Sarr, Oregon State University.
Magpie Room - Cliff Lodge
8:15 AM to 11:45 AM


8:15 AM	The role of riparian habitats and stream networks in facilitating the spread of invasive species. HATFIELD, C.A. *
8:30 AM	Riparian vegetation and stream habitat condition in a tropical agriculture and secondary forest mosaic . HEARTSILL-SCALLEY, T. *, T.M. AIDE
8:45 AM	Spatial and temporal aspects of water use across the riparian-upalnd gradient in a southern African savanna landscape. INNIS, S.A. *, K.H. ROGERS, R.J. NAIMAN
9:00 AM	Spatial clonal pattern of Salix laevigata in varying riparian environments. DOUHOVNIKOFF, V.
9:15 AM	Riparian vegetation succession along the Cosumnes River, California. TU, M. *
9:30 AM	Temporal variation in abundance and composition of pioneer seedling cohorts of riparian trees: Influence of river flow variation. DIXON, M.D. *, M.G. TURNER
9:45 AM	Depth to ground water affects riparian tree water uptake and physiological condition. HORTON, J.L. , S.C. HART, T.E. KOLB
10:00 AM	Break
10:15 AM	Delayed effects of flood control on a flood-dependent riparian forest. KATZ, G.L. , J.M. FRIEDMAN
10:30 AM	Patterns of tree species in early succession along point bars of southeastern USA rivers. ROBERTSON, K.M. *, C.K. AUGSPURGER
10:45 AM	River regulation influences beaver herbivory. BRECK, S.W. *, K.R. WILSON, D.C. ANDERSEN
11:00 AM	Long-term dynamics of riparian willow on the elk winter range of Rocky Mountain National Park (Colorado). PEINETTI, R. , M.B COUGHENOUR
11:15 AM	Growth and production of dominant riparian trees in the Pacific Northwest coastal rainforest. BALIAN, E.V. *, R.J. NAIMAN
11:30 AM	Controls on conifer regeneration in managed riparian forests: Effects of seed source, substrate, and vegetation. BEACH, E.W. , C.B HALPERN

Oral Session #21: Small Mammal Population Ecology.
Presider: D.A. Guenther, Colorado State University.
Superior Room - Cliff Lodge
8:00 AM to 12:15 PM


8:00 AM	The nocturnal and crepuscular ecology of a diurnal monkey, Colobus guereza, in the Kakamega forest, Kenya. CLELAND, E.E. *, F. VON HIPPEL
8:15 AM	Selective herbivory by the desert woodrat (Neotoma lepida) on joshua trees (Yucca brevifolia) . SANFORD, M.P. *, N. HUNTLY
8:30 AM	Depletion of seed patches by Merriam's kangaroo rats: Are GUD assumptions met? PRICE, M.V. *, R.A. CORRELL
8:45 AM	The effect of habitat and behavior on burrow structure of two species of pocket gopher. ROMAÑACH, S. *, E. SEABLOOM, O.J. REICHMAN
9:00 AM	The northern pocket gopher (Thomomys talpoides) as an organizer of alpine ecosystem and plant community structure. SHERROD, S.K. *, T.R. SEASTEDT
9:15 AM	The effect of hillslope angle on pocket gopher (Thomomys bottae). SEABLOOM, E.W. *, O.J. REICHMAN, E.J. GABET
9:30 AM	Evidence for benefits to occupants of sink habitats. KREUZER, JR., M. *, N.J. HUNTLY
9:45 AM	Relative influences on foraging: The gerbil's perspective. ABRAMSKY, Z. , M.L. ROSENZWEIG*
10:00 AM	Break
10:15 AM	The role of spatial autocorrelation in the detection and interpretation of patterns of tree seed and seedling predation by rodents in old-fields. MANSON, R.H. *
10:30 AM	Mouse population eruptions in New Zealand forests: The role of population density and seedfall. CHOQUENOT, D. *, W. RUSCOE
10:45 AM	The effect of edge on white-footed mice (Peromyscus leucopus) in eastern deciduous woodlands. WOLF, M. *, G. BATZLI
11:00 AM	Positive effects of clearcutting on deer mouse demography leads to increased trillium seed predation. TALLMON, D.A. *, N. RADKE, L.S. MILLS, E.S. JULES
11:15 AM	Clearance rate of plant toxins: A mechanism for dietary specialization in mammalian herbivores. SORENSEN, J.S. *, M.D. DEARING
11:30 AM	Body-size dependent species distribution of Israeli mammals on different ecological scales. ZIV, Y. , O. SHIMONI
11:45 AM	Mechanisms of coexistence in Philippine bats. SEDLOCK, J.L.
12:00 PM	Experimental removal of strong and weak predators: Mice and chipmunks preying on songbird nests. SCHMIDT, K.A. *, J.R. GOHEEN, R. NAUMANN, R.S. OSTFELD

Oral Session #22: Multiple Disturbance Effects, Including Fire.
Presider: K.M. Menning, University of California, Berkeley.
Maybird Room - Cliff Lodge
8:00 AM to 12:15 PM


8:00 AM	Disturbance "legacy" in forest communities. BEATTY, S.W.
8:15 AM	Disturbance and succession in interior Alaskan white spruce forests . ADAMS, P.C. *, L.A. VIERECK
8:30 AM	The role of fire disturbance, climate, and atmospheric CO2 in the response of historical carbon dynamics in Alaska from 1950 to 1995. MCGUIRE, A.D. , R.A. MEIER, Q. ZHUANG, M. MACANDER, T.S. RUPP, E. KASISCHKE, D. VERBYLA, D.W. KICKLIGHTER, J.M. MELILLO
8:45 AM	Hydrologic regimes, disturbance history, and environmental gradients at four forested long-term ecological research sites : Andrews, Coweeta, Hubbard Brook, and Luquillo. JONES, J.A. , D.A. POST*
9:00 AM	Distinguishing the effects of environmental stress and forest succession on changes in the forest floor. YANAI, R.D. , M.A. ARTHUR
9:15 AM	Disturbance in mixed-conifer forests of Yosemite Valley, California. RIZZO, D.M. *, G.W. SLAUGHTER
9:30 AM	The relative roles of lightning and aboriginal ignitions in pre-1900 fire regimes, southwestern USA. ALLEN, C.D.
9:45 AM	Indians and fire in the U.S. Rocky Mountains. BAKER, W.L.
10:00 AM	Break
10:15 AM	The interaction of fire intensity and elk herbivory on aspen regeneration and arthropod biodiversity: An intermediate burn hypothesis. BAILEY, J.K. *, T.G. WHITHAM
10:30 AM	Tree seedling survival and growth in southern Appalachian forests: Effects of canopy gaps, understory removal, trenching and fertilization. BECKAGE, B. *, J. CLARK
10:45 AM	The role of fire, deer herbivory and canopy gaps on tree species composition in eastern deciduous forests: Implications for succession theory. COLLINS, R.J. , W.P. CARSON
11:00 AM	Semi-arid plant community response to drought and land use at the regional scale. ELMORE, A.J. *, J.F. MUSTARD, S.J. MANNING
11:15 AM	Restoring fire as an ecological process in shortgrass prairie ecosystems. BROCKWAY, D.G.
11:30 AM	How does a sagebrush steppe landscape's composition and pattern respond to grazing, fire, and climate change? WASHINGTON-ALLEN, R.A. *, N.E. WEST, R.D. RAMSEY, C.T. HUNSAKER
11:45 AM	Seed bank responses to experimental fires in a Mojave Desert scrub community. ESQUE, T.C. *, J.A. YOUNG, C.R. TRACY
12:00 PM	Effects of fire, grazing, and the presence of shrubs on desert grassland species of southern New Mexico. DREWA, P.B. *, K.M. HAVSTAD

Oral Session #23: Soil Ecology.
Presider: W.J. Dress, Ohio State University.
Cottonwood Room I - Sports Event Center
8:00 AM to 11:45 AM


8:00 AM	Distribution and diversity of soil Crenarchaeota in the front range of the Rocky Mountains. OLINE, D.K.
8:15 AM