| O3 | Effects of CO2 and O3 enrichment on microbial metabolism of 13C-labeled compounds in forest soils.
PLFA, O3 , CO2 , soils
 FULL ABSTRACT |
| O3 | Indications of increasing soil C storage under elevated CO2 and O3.
CO2, O3, C, soil
FULL ABSTRACT |
| OAK REGENERATION | Edge effects in a forest mosaic: forest structure and composition in the Highlands of Chiapas, Mexico.
Tropical Cloud Montane Forest, Edge structure, Oak Regeneration
FULL ABSTRACT |
| OAK RIDGE NATIONAL ENVIRONMENTAL RESEARCH PARK | Identifying the habitat characteristics of the non-native, invasive grass, Microstegium vimineum.
Microstegium vimineum, non-native plants, Japanese grass, Oak Ridge National Environmental Research Park
FULL ABSTRACT |
| OLYMPIC NATIONAL PARK | Seasonal changes in exposure of pool-breeding amphibians to UVR in sub-alpine ponds.
ultraviolet radiation, amphibian, dissolved organic matter, Olympic National Park
FULL ABSTRACT |
| ONTOGENETIC DIET SHIFTS | Ontogenetic diet shifts of walleye: predicting consumption.
Ontogenetic diet shifts, growth, walleye, Stizostedion
FULL ABSTRACT |
| ONTOGENY | Environmental and ontogenetic controls over transpiration of Pinus flexilis and P. ponderosa in northern Arizona.
Transpiration, Sap-Flux, Conductance, Ontogeny
FULL ABSTRACT |
| OPEN-TOP CHAMBERS | The impact of elevated atmospheric CO2 on the responses of a Florida scrub-oak ecosystem to the 1998 drought.
Elevated CO2, Drought, Ecosystem processes, Open-top chambers
FULL ABSTRACT |
| OPERATIONALIZING | Application of research in South African parks.
Partnership, Knowledge management, Institutionalizing, Operationalizing
FULL ABSTRACT |
| OREGON COAST | 61 Relationships between land use, geology and in-stream physical habitat in small northern Oregon coastal streams.
land use, physical habitat, streams, Oregon coast
FULL ABSTRACT |
| ORGANIC NITROGEN | The fate and retention of organic and inorganic nitrogen in a western Oregon coniferous forest .
Organic Nitrogen, Retention, Forest Soil, Lobaria oregana
FULL ABSTRACT |
| ORGANIC AGRICULTURE | 12 Effects of synthetic and organic soil fertility amendments on the incidence of southern blight caused by Sclerotium rolfsii , and the abundance of soil microbial and nematode communities in conventional and organic agroecosystems.
Organic agriculture, soil microbial communities, plant disease
FULL ABSTRACT |
| ORTHOPTERA | 74 The effects of emergence date on the performance in the grasshopper Sphenarium purpurascens (Orthoptera: Pyrgomorphidae) in Central Mexico .
Life history, emergence date, Sphenarium purpurascens, Orthoptera
FULL ABSTRACT |
| OVENBIRD (SEIURUS AUROCAPILLUS) | 12 Beyond composition: Incorporating landscape pattern into gap analysis distribution models.
Gap Analysis, distribution models, Ovenbird (Seiurus aurocapillus)
FULL ABSTRACT |
| OVIPOSITION | Oviposition site selection along a predator gradient.
Oviposition, Predation, Habitat selection
FULL ABSTRACT |
| OWL SURVEY | 153 Saw-whet Owl (Aegolius acadicus) distribution and habitat selection in the Nicolet National Forest, WI, USA.
<Aegolius acadicus>, Landscape , Habitat Selection, Owl survey
FULL ABSTRACT |
| O3 | Aphid individual, population and natural enemy responses to elevated CO2 or O3.
aphids, natural enemies, co2, o3
FULL ABSTRACT |
| OAK | 33 Tree species composition and conservation of a remnant New Jersey Pinelands community.
new jersey pinelands, oak, pine, community
FULL ABSTRACT |
| OAK | Using hyperdocuments for knowledge management: An intelligent encyclopedia of southern Appalachian oak forests.
southern Appalachians, knowledge management, decision support tools, oak
FULL ABSTRACT |
| OAK | 140 Invertebrate population dynamics after oak community disturbance by burning in California, USA, and Portugal, South Europe.
invertebrates, fire, oak, disturbance
FULL ABSTRACT |
| OAK REGENERATION | How differently do seedlings of Quercus alba, Q. prinus and Q. rubra respond to low light intensities created by shading?
oak regeneration
FULL ABSTRACT |
| OAK REGENERATION | 143 Growth and leaf nitrogen responses of oak and red maple seedlings to canopy gap fraction following prescribed fires.
oak regeneration, prescribed fire, red maple, hemispherical photography
FULL ABSTRACT |
| OAK SAVANNA | Response of a butterfly community to habitat structure along a continuum of degraded savanna sites.
oak savanna, butterfly community, fire frequency, indicator species
FULL ABSTRACT |
| OAK SAVANNA | Experimental groundlayer restorations support description of Wisconsin oak savanna as "forb-lands," not "grass-lands.".
oak savanna, gradients, forbs, experimental restoration
FULL ABSTRACT |
| OAK WOODLAND | Validation of a conceptual hierarchical model with data in an oak woodland/annual grassland system: Figuring out where the parts fit.
scale dependency, hierarchical models, oak woodland, classification and regression trees
FULL ABSTRACT |
| OAK-HICKORY CONVERSION | Threshold time of conversion from oak-hickory to mesophytic forest in the Illinois Ozark Hills.
oak-hickory conversion, quercus-carya conversion, community ecology, Illinois Ozark Hills
FULL ABSTRACT |
| OAK-HICKORY FORESTS | 77 The Impact of invasive plant species on eastern oak-hickory forests.
invasive plant species, oak-hickory forests
FULL ABSTRACT |
| OBJECTIVES HIERARCHY | Basic Research- its place in and Contribution to National Parks.
objectives hierarchy, strategic adaptive management, science-management relationship
FULL ABSTRACT |
| OBLIGATE MUTUALISM | 5 Impact of a third trophic level on the dynamics of an obligate mutualism.
obligate mutualism, tritrophic interactions, insect natural enemies, yucca
FULL ABSTRACT |
| OBSERVER | Dissipation versus degradation: a helpful distinction in understanding human historical and non-human ecology of resource use.
thermodynamics, resources, hierarchy, observer
FULL ABSTRACT |
| OCEANOGRAPHY | Rocky intertidal community dynamics across a major oceanographic discontinuity: precipitous changes in recruitment and growth .
upwelling, recruitment, rocky intertidal, oceanography
FULL ABSTRACT |
| ODONATES | 80 Are 'sinkholes' aptly named? Larval odonate ecology and adult species diversity in southeastern New Mexico.
odonates, exuviae, larvae, biodiversity
FULL ABSTRACT |
| OLD GROWTH | Seventy-two years of change in the herbaceous vegetation layer of Heart's Content Scenic Area, Warren County, PA.
herbaceous plants, old growth, white-tailed deer, long-term change
FULL ABSTRACT |
| OLD GROWTH | Disturbance regimes of old-growth and second-growth hemlock-hardwood forests in Adirondack Park.
disturbance, hemlock-hardwood, old growth, Adirondack Park
FULL ABSTRACT |
| OLD GROWTH TEMPERATE FOREST | Non-linear nitrogen retention in an unpolluted old-growth temperate forest receiving a geometric range of experimental 15N additions .
nitrogen saturation, nutrient cycling, old growth temperate forest, Chile
FULL ABSTRACT |
| OLD-FIELD | Controls on early rates of succession in a Virginia Piedmont old-field.
succession, leaf area index (LAI), old-field, Virginia
FULL ABSTRACT |
| OLD-GROWTH | Reproductive role of remnant old-growth trees in mature Douglas-fir forests, southern Washington Cascade Range.
ecological succession , old-growth, biological legacies, seed source
FULL ABSTRACT |
| OLD-GROWTH | Preserving an old-growth pine remnant: do two "wrongs" make a "right"?
old-growth, restoration ecology, salvage harvesting, CWD
FULL ABSTRACT |
| OLD-GROWTH | 125 Temporal and spatial variability of air and soil temperatures within an old-growth mixed conifer.
temperature, variability, old-growth, mixed conifer
FULL ABSTRACT |
| OLD-GROWTH | Tree cavities of Midwestern old-growth forests.
old-growth, forest, cavities, midwest
FULL ABSTRACT |
| OLD-GROWTH | Effects of multiple human-induced disturbances of forest composition and nitrogen dynamics in northern hardwood forests.
disturbance, old-growth, second-growth, beech bark disease
FULL ABSTRACT |
| OLD-GROWTH | Coherent spatial relationships of species distribution and production in an old-growth Pseudotsuga-Tsuga forest.
spatial pattern analysis, old-growth, biomass, Ripley's K statistic
FULL ABSTRACT |
| OLD-GROWTH | 21 Distribution, composition, and age structure of black gum (Nyssa sylvatica) swamps in New Hampshire.
Nyssa sylvatica, black gum, old-growth, New Hampshire
FULL ABSTRACT |
| OLD-GROWTH | 35 Response of overstory and understory conifers to gap size and resource levels.
canopy gaps, growth, mortality, old-growth
FULL ABSTRACT |
| OLD-GROWTH FOREST | Evolution and ecology of diversity in a community of forest sedges.
carex, diversity, old-growth forest, phylogeny
FULL ABSTRACT |
| OLD-GROWTH FOREST | 38 Assessing the impact of the ice storm of 1998 on an old-growth forest.
disturbance, ice storm, old-growth forest, canopy
FULL ABSTRACT |
| OLD-GROWTH FOREST | Understanding old-growth forests using stand-level processes.
old-growth forest, gap dynamics, age-specific mortality rates, falling rates
FULL ABSTRACT |
| OLD-GROWTH FORESTS | 30 A quarter century of change in old-growth forests.
treefall gaps, old-growth forests, canopy turnover, mortality
FULL ABSTRACT |
| ONCORHYNCUS CLARKI | 18 Population thresholds as a mechanism to lessen extinction risk in a stochastic environment.
population modeling, cutthroat trout, territoriality, oncorhyncus clarki
FULL ABSTRACT |
| ONTARIO | Evidence of fire suppression impacts on fire size and frequency in the boreal forest of Ontario.
boreal, fire, ontario, suppression
FULL ABSTRACT |
| ONTOGENETIC DIET SHIFT | Foraging capacity and resource synchronisation in an ontogenetic diet switcher, pikeperch (Stizostedion lucioperca).
ontogenetic diet shift, size-structure, piscivory, planktivory
FULL ABSTRACT |
| ONTOGENETIC HABITAT SHIFT | Post-settlement use of lagoon habitats as off-reef nurseries for coral reef fishes.
coral reef fish, nursery habitats, ontogenetic habitat shift, post-settlement
FULL ABSTRACT |
| ONTOGENETIC VARIATION | 113 Ontogenetic variation in the effects of crayfish in a warmwater stream benthic community.
ontogenetic variation, predation, bioturbation, Decapoda
FULL ABSTRACT |
| ONTOGENY | Phenotypic plasticity in frogs: pre-and post-metamorphic environments determine the final frog phenotype.
phenotypic plasticity, ontogeny, terrestrial performance, Hyla versicolor
FULL ABSTRACT |
| ONTOGENY | Ontogenetic development of sun and shade leaves in tropical tree species.
leaf mass per area, ontogeny, tropical trees, Los Tuxtlas
FULL ABSTRACT |
| OPEN TOP CHAMBERS | The effect of pressure, temperature, and wind on ecosystem gas exchange measurements determined using large open top chambers for exposing plants to elevated atmospheric CO2 in Florida scrub oak.
elevated CO2 , net ecosystem CO2 exchange, open top chambers, florida scrub oak
FULL ABSTRACT |
| OPEN-TOP CHAMBERS | Elevated CO2 increases net ecosystem CO2 uptake in a Florida scrub-oak ecosystem .
elevated co2, net ecosystem co2 exchange, open-top chambers, fire
FULL ABSTRACT |
| OPTIMAL FORAGING | 115 Selective foraging behavior in pikeperch.
predation, piscivory, prey choice, optimal foraging
FULL ABSTRACT |
| OPTIMAL GROUP SIZE | Optimal group size and Northern Bobwhite coveys.
bobwhite quail, optimal group size, Allee Effect
FULL ABSTRACT |
| OPTIMAL VASCULAR SYSTEM | Do plants obey Murray's law?
Murray's law, optimal vascular system, xylem
FULL ABSTRACT |
| OPTIMISATION | Captive breeding: Should we bother?
optimisation, conservation, captive breeding
FULL ABSTRACT |
| OPTIMIZATION | Adaptive foraging under predation hazard: testing optimization theory with stream fish.
optimization, fish, predator, experiment
FULL ABSTRACT |
| OPTIMIZATION | How to manage a metapopulation.
optimization, metapopulation, conservation, space
FULL ABSTRACT |
| ORB-WEAVING SPIDERS | 51 The effects of habitat structure on the distribution of the orb-weaving spider Leucauge regnyi in a Puerto Rican rain forest.
orb-weaving spiders, habitat structure
FULL ABSTRACT |
| ORDINATION | Climatic interpretation of 20th-century tree-ring patterns in high-elevation conifers.
climate, tree-rings, ordination, Sierra
FULL ABSTRACT |
| OREGON | Human impacts change parasite dynamics through host reservoirs and the role of abiotic factors.
disease, forestry, amphibian, oregon
FULL ABSTRACT |
| ORGANIC N | The role of organic N in the nitrogen economy of floodplain balsam poplar stands in interior Alaska.
organic N, Populus balsamifera, Alaska, 15N
FULL ABSTRACT |
| ORGANIC CARBON | Specific UV absorbance as an Indicator of DOC source.
organic carbon, lakes
FULL ABSTRACT |
| ORGANIC MATTER | 65 Litterfall production in forested wetlands with contrasting hydrologic regimes.
wetland, litterfall, organic matter
FULL ABSTRACT |
| ORGANIC MATTER | 120 The ecological importance of passive deposition of organic matter into burrows of crabs.
Chasmagnathus granulata, organic matter, burrowing
FULL ABSTRACT |
| ORGANIC MATTER ACCUMULATION | 98 Latitudinal variability of litter fall and decay in pine forest ecosystems: transect studies along 52N parallel .
ecosystem response to climate change, organic matter accumulation, pine ecosystem, litterfall/decomposition budget
FULL ABSTRACT |
| ORGANIC NITROGEN | 30 Does clearcutting alter the abundance of soluble organic nitrogen in forest soils?
organic nitrogen, amino acids, clearcutting, forest soils
FULL ABSTRACT |
| ORGANIC NITROGEN | Species effects on soil properties across the landscape II: Carbon, nitrogen and microbial dynamics.
nitrogen, nitrogen mineralization, organic nitrogen, species effects
FULL ABSTRACT |
| ORGANIC PHOSPHORUS | The effect of drawdown on P flux from soils in the Everglades Nutrient Removal Project wetland.
organic phosphorus, water quality, biogeochemistry, nutrient cycling
FULL ABSTRACT |
| ORGANOCHORINES AND MERCURY | Contaminants in fish of Illinois inland lakes, 1974-1998.
fish contaminants, long-term trend analysis, organochorines and mercury, sampling and risk assessment
FULL ABSTRACT |
| OTOLITH | Using natural strontium signatures to track the movements and migrations of salmon.
salmon, strontium, migration, otolith
FULL ABSTRACT |
| OUTCROSSING RATE | 113 Spatial and temporal variation in the mating system of Delphinium nuttallianum.
mating system, phenology, outcrossing rate, Delphinium
FULL ABSTRACT |
| OVENBIRD (SEIURUS AUROCAPILLUS) | Landscape composition modulates the effects of forest fragmentation: consequences for breeding Ovenbirds.
landscape composition, forest fragmentation, neotropical migrant songbirds, ovenbird (Seiurus aurocapillus)
FULL ABSTRACT |
| OVERYIELDING | Relative controls of resource availability and species diversity on ecosystem productivity: local vs. regional processes.
species diversity, overyielding, ecosystem productivity, resource availability
FULL ABSTRACT |
| OVIPOSITION HABITAT SELECTION | Oviposition site selection by the mosquito, Culiseta longiareolata, in response to chemical detection of a predator, Notonecta maculata.
oviposition habitat selection, risk of predation, temporary pools
FULL ABSTRACT |
| OVIPOSITIONAL PREFERENCE | Ovipositional preferences of a seed eating moth reared on parental and hybrid cattails.
cattails, hybrids, ovipositional preference, Typha
FULL ABSTRACT |
| OVULE ABORTION | 146 Differences in ovule abortion between sprouting and non-sprouting species of California chaparral.
Ceanothus, chaparral, ovule abortion
FULL ABSTRACT |
| OWLS | 156 Habitat composition determines breeding success of Tengalm's owls under fluctuating food conditions.
owls, breeding, habitat
FULL ABSTRACT |
| OXYGEN DIFFUSION | Oxygen fluxes in constructed wetlands.
constructed wetlands, nitrification, oxygen diffusion, nitrogen removal
FULL ABSTRACT |
| OZONE | 104 Simulation of ozone effects on eight tree species at Shenandoah National Park, Virginia, USA.
ozone, assessment, modeling
FULL ABSTRACT |
| OZONE | 12 Effects of elevated atmospheric CO2 and O3 on tree-insect-parasitoid interactions.
carbon dioxide, ozone, tritrophic interactions, forests
FULL ABSTRACT |
| OZONE | 66 Ozone and low light effects on allocation and partitioning of recently-assimilated carbon in sugar maple.
sugar maple, ozone, carbon transport, low light
FULL ABSTRACT |
| OZONE | 52 Effects of elevated atmospheric carbon dioxide and ozone on canopy insect biodiversity .
insect biodiversity, carbon dioxide, ozone, free-air carbon dioxide enrichment
FULL ABSTRACT |
| OZONE | 22 Dynamics of defoliator activity along an urban to rural gradient in the Middle Rio Grande riparian corridor.
Chrysomela scripta, Populus deltoides, ozone, greenfall
FULL ABSTRACT |
| OZONE DEPLETION | 29 Biodiversity of microfauna and fungal communities in a Sphagnum bog under two levels of solar UV-B.
ozone depletion, long term ecosystem study, peat bog, biodiversity
FULL ABSTRACT |
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