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HAGEN, JOY	137 Mobilizing science for risk sssessment: Environmental risks of genetically engineered organisms. Hagen, Joy*,1, Zivian, Anna1, 1 University of California, Santa Cruz, Santa Cruz, CA, USA FULL ABSTRACT
HAJEK, FRANK	54 Deforestation in Peruvian Yungas and related socioeconomical process: Comparative analysis in seven watersheds. Arnillas Merino, Carlos *,1, Vásquez Ruesta, Pedro1, Tovar Ingar, Carolina1, Saito Díaz, José Antonio1, Hajek, Frank2, 1 Universidad Nacional Agraria La Molina, Lima, Lima, Perú2 Sociedad Zoológica de Francfort, Lima, Lima, Perú FULL ABSTRACT
HALL, CHARLES	146 Vulnerability of human populations to demographic growth and changes in petroleum availability in the Yucatan Peninsula, Mexico. Hall, Charles*,1, Hyde, Karla1, Hall, Myrna1, Salas, Silvia2, Castello, Leandro 1, 1 State University of New York, Syracuse, NY, USA2 Centro de Investigacions y de Estudios Avanzados, Unidad Merida, Merida, Yucatan, Mexico FULL ABSTRACT
HALL, MYRNA	146 Vulnerability of human populations to demographic growth and changes in petroleum availability in the Yucatan Peninsula, Mexico. Hall, Charles*,1, Hyde, Karla1, Hall, Myrna1, Salas, Silvia2, Castello, Leandro 1, 1 State University of New York, Syracuse, NY, USA2 Centro de Investigacions y de Estudios Avanzados, Unidad Merida, Merida, Yucatan, Mexico FULL ABSTRACT
HALL, MYRNA	138 Tools for community empowerment in resource management on the Yucatan Peninsula. Hall, Myrna*,1, Smardon, Richard 1, Faust, Betty2, Euan Avila, Jorge2, Fraga Berdugo, Julia2, Manno, Jack1, King, Maren1, Palmer, James1, 1 State University of New York, Syracuse, NY, USA2 Centro de Investigacions y de Estudios Avanzados, Merida, Yucatan, Mexico FULL ABSTRACT
HANSON, D. ERIC	22 Use of Geographic Information Systems to enhance invasive plant management in American Samoa. Hanson, D. Eric*,1, Togia, Tavita2, Medeiros, Art3, 1 American Samoa Community College, Pago Pago, AS, USA2 National Park of American Samoa, Pago Pago, AS, USA3 USGS Pacific Island Ecosystems Research Center, Makawao, HI, USA FULL ABSTRACT
HARTZ, SANDRA	10 Response of spider community to spatial structural features of native and managed forest habitats. Baldissera, Ronei1, Ganade, Gislene2, Hartz, Sandra1, 1 Federal University of Rio Grande do Sul State, Porto Alegre, RS, Brazil2 Sinos River Valley University, São Leopoldo, RS, Brazil FULL ABSTRACT
HARVEY, CELIA	Impact of payments for environmental services on the livelihood strategies of rural landowners. Morse, Wayde1, Stoian, Dietmar2, Hollenhorst, Steve 1, Harvey, Celia2, Wulfhorst, J.D.1, McLaughlin, Bill 1, 1 University of Idaho, Moscow, ID, USA2 Centro Agronómico Tropical de Investigación y Enseñanza (CATIE), Turrialba, Costa Rica FULL ABSTRACT
HASSELQUIST, NILES	108 The influence of vesicular-arbuscular mycorrhizae during secondary plant succession in a seasonal tropical forest. Hasselquist, Niles*,1, Allen, Edith 1, Allen, Michael1, 1 University of California-Riverside, Riverside, CA, USA FULL ABSTRACT
HAVENS, KAYRI	118 Rare plant management in the face of global climate change. Vitt, Pati*,1, Kendall, Bruce2, Havens, Kayri1, 1 Chicago Botanic Garden, Glencoe, IL, USA2 University of California, Santa Barbara, Santa Barbara, CA, USA FULL ABSTRACT
HAVENS, KAYRI	5 Weed risk assessment and evaluation protocols: An integrated approach. Jefferson, Lara *,1, Havens, Kayri*,1, Ault, James1, 1 Chicago Botanic Garden, Glencoe, USA FULL ABSTRACT
HAYNES, RICHARD	112 Effects of recent forest policies on biodiversity and the timber economy in the Pacific Northwest. Spies, Thomas*,1, Haynes, Richard1, 1 USDA Forest Service, Corvallis, OR, USA FULL ABSTRACT
HEARTSILL-SCALLEY, TAMARA	25 The role of road corridors on riparian vegetation and stream ecosystem dynamics. Crowl, Todd*,1, Covich, Alan2, Hein, Catherline1, Heartsill-Scalley, Tamara1, Blanco, Juan1, 1 Utah State University, Logan, UT, USA2 University of Georgia, Athens, GA, USA FULL ABSTRACT
HECHINGER, RYAN	17 The introduced ribbed mussel (Geukensia demissa) in Estero de Punta Banda, Mexico: Interactions with the native cord grass, Spartina foliosa. Torchin, Mark1, Hechinger, Ryan 2, Huspeni, Todd*,2, Whitney, Kathleen 2, Lafferty, Kevin 3, 1 Smithsonian Tropical Research Institute, APO, AA2 University Of California, Santa Barbara, CA, USA3 USGS, Santa Barbara, CA, USA FULL ABSTRACT
HEIN, CATHERLINE	25 The role of road corridors on riparian vegetation and stream ecosystem dynamics. Crowl, Todd*,1, Covich, Alan2, Hein, Catherline1, Heartsill-Scalley, Tamara1, Blanco, Juan1, 1 Utah State University, Logan, UT, USA2 University of Georgia, Athens, GA, USA FULL ABSTRACT
HELMUS, MATTHEW	134 Impoundment subsidies to native and exotic fishes of central Mexico. Helmus, Matthew*,1, Mercado-Silva, Norman1, 1 University of Wisconsin, Madison, WI, USA FULL ABSTRACT
HENNESSY, LOGAN	55 Urban sustainability and forest recovery in developing tropical countries: Linking rural emigration and reforestation of agricultural land. Liu, Wendy*,1, Hennessy, Logan1, Silver, Whendee1, 1 University of California, Berkeley, Berkeley, CA, USA FULL ABSTRACT
HERKOVITS, JORGE	159 Low level treatments of amphibian embryos with Cadmium: Beneficial and adverse effects according to exposure conditions. Castañaga, Luis Alfredo*,1, Gonzalez Eiras, Carolina Dora1, Aronzon, Carolina Mariel1, Pérez-Coll, Cristina Silvia1, 2, 3, Herkovits, Jorge1, 3, 1 Instituto de Ciencias Ambientales y Salud, Buenos Aires, Argentina2 Escuela de Ciencia y Tecnología, Migueletes, Buenos Aires3 Consejo Nacional de Investigaciones Científicas y Tecnológicas, Buenos Aires, Argentina FULL ABSTRACT
HERNANDEZ, JOSEFINA	Social participation and biodiversity conservation in Santa Maria Yavesia, Oaxaca, Mexico. Trejo, Irma*,1, Hernandez, Josefina1, Aguilar, Alejandra2, Benitez, Esteban2, Ramos, Fernando3, 1 Instituto de Geografia, UNAM, Mexico, D.F., Mexico2 Facultad de Ciencias, UNAM, Mexico, D.F., Mexico3 Santa Maria Yavesia, Distrito de Ixtlan, Oaxaca, Mexico FULL ABSTRACT
HERNANDEZ, LORNA	11 Characteristics of urban birds in the parks of Puebla (Mexico). Bonache Regidor, Carolina *,1, 2, Gonzalez Oreja, Jose Antonio2, Buzo, Daniela2, Hernandez, Lorna 2, 1 Universidad Complutense de Madrid, Madrid, Madrid, España2 Universidad de Las Americas Puebla, Cholula, Puebla, Mexico FULL ABSTRACT
HERNANDEZ, LORNA	13 Factors which influence bird community composition in the urban area of Puebla (Mexico). González Oreja , José Antonio *,1, Bonache Regidor, Carolina 2, Buzo, Daniela1, Hernandez, Lorna1, 1 Universidad de las Américas Puebla, Cholula, Puebla, Mexico2 Universidad Complutense de Madrid, Madrid, Madrid, España FULL ABSTRACT
HERNMISSING CHARACTER ENTITY: AACUTENDEZ-APOLINAR, MARIANA	109 Population studies as fundamentals for sustainable resource management: The case of wood for alebrije production in Oaxaca, Mexico. Hernández-Apolinar, Mariana*,1, Purata, Silvia2, Valverde, Teresa1, 1 Facultad de Ciencias-Universidad Nacional Autónoma de México, México, DF., México2 People and Plants International, Xalapa, Veracruz, México FULL ABSTRACT
HERNáNDEZ-Á, EFRéN	146 The ecological model for forest management unit definition. Hernández-Á, Efrén *,1, Rodríguez F, Carlos2, Pelz, Dieter3, Gallegos R, Agustín4, 1 Universidad de Guadalajara2 Freiburg University, Germany3 USDA-Agricultural Research Service, USA4 Universidad de Guadalajara FULL ABSTRACT
HERRE, ALLEN	105 Arbuscular mycorrhizal fungi determine Trichilia tuberculata seedling productivity in a Panamanian lowland wet forest. Alvarez, Dora1, Cordero, Roberto1, Tyree, Melvin1, Kyllo, Damond1, Herre, Allen1, 1 Smithsonian Tropical Research Institute, Panama, Panama FULL ABSTRACT
HERRE, EDUARD	151 Soil conditions and herbivores drive habitat partitioning in two morphospecies of the tropical pioneer tree Trema micrantha in Panama. Pizano, Maria*,1, Mangan, Scott2, Dalling, James3, Eom, Ahn-Heum4, Herre, Eduard5, 1 University of Florida, Gainesville, FL, USA2 Indiana University, Bloomington, IN, USA3 University of Illinois, Urbana, IL, USA4 Korea National University of Education, Chungbuk, Republic of Korea5 Smithsonian Tropical Research Institute, Panama, Panama FULL ABSTRACT
HERRERA , MARIA DOLORES	147 Governance in Gulf of California , Mexico. Herrera , Maria Dolores1, 1 University of Rhode Island, Narragansett, RI, USA FULL ABSTRACT
HERRERA ORMISSING CHARACTER ENTITY: EACUTE, FABIOLA	Formation of slums by migration and works of forestation of the community of Jicamarca-Lima-Peru. Herrera Oré, Fabiola*,1, 1 Pontificia Universidad Católica Del Perú, Lima, Lima, Perú FULL ABSTRACT
HERRERA-SILVEIRA, JORGE	133 Long Term Ecological Research: Toward understanding the effects of coastal ecosystem transformation. Herrera-Silveira, Jorge1, Vidal, Victor1, Aguirre, Leopoldina, Ardisson, Pedro1, Rivera, Victor2, Coronado, Carlos3, Comin, Francisco4, Euan, Jorge1, 1 CINVESTAV-IPN, Unidad Merida, Merida, Yuctan, Mexico2 Lousiana State University, Baton Rouge, LA, USA3 South Florida Water Management District, Palm Beach, FL, USA4 Instituto Pirenaico de Ecologia, Zaragoza, Aragon, Spain FULL ABSTRACT
HERRERA-SILVEIRA, JORGE	Nutrient budgets in Yucatan State (in Mexico) in an era of global tourism. Comin, Francisco*,1, Aranda-Cirerol, Nancy2, Herrera-Silveira, Jorge3, 1 Instituto Pirenaico de Ecología, Zaragoza, Spain2 Unidad Multidisciplinaria, Sisal, Yucatan, Mexico3 CINVESTAV-IPN, Unidad Merida, Merida, Yucatan, Mexico FULL ABSTRACT
HERRICK, JEFF	130 The importance of soil carbonates for available water holding capacity in arid ecosystems of the Americas. Duniway, Michael*,1, Herrick, Jeff2, Monger, H. Curtis1, 1 New Mexico State University, Las Cruces, NM, USA2 USDA ARS Jornada Experimental Range, Las Cruces, NM, USA FULL ABSTRACT
HERRICK, JEFFREY	133 Managing vegetation dynamics: Soil-geomorphic maps, state-and-transition models, and remote sensing. Bestelmeyer, Brandon *,1, Monger, H.Curtis 2, Ancira, Ernesto 3, Herrick, Jeffrey 1, Steele, Caiti 1, Treviño , Rosendo 4, 1 USDA Agricultural Research Service, Las Cruces, NM, USA2 New Mexico State University, Las Cruces, NM, USA3 Universidad Autónoma de Aguascalientes, Aguascalientes, Aguascalientes, México4 USDA Natural Resources Conservation Service, Albuquerque, NM, USA FULL ABSTRACT
HERRMANN, HANS	Addressing the challenge of aquatic invasive species in North America: An example of international cooperation. Herrmann, Hans*,1, 1 Commission for Environmental Cooperation, Montreal, Quebec, Canada FULL ABSTRACT
HESSION, W. CULLY	127 Effects of land use and physical habitat type at multiple spatial scales on fish community diversity. Cianfrani, Christina*,1, Sullivan, S. Mazeika2, Hession, W. Cully3, Watzin, Mary4, 1 Hampshire College, Amherst, MA, USA2 University of Idaho, Moscow, ID, USA3 Virginia Tech, Blacksburg, VA, USA4 Universityof Vermont, Burlington, VT, USA FULL ABSTRACT
HESSION, W. CULLY	144 Linking land use change, stream geomorphology, and aquatic biodiversity in a hierarchical classification scheme. Watzin, Mary*,1, Hession, W. Cully1, Sullivan, S. Mazeika1, Cianfrani, Christine1, 1 University of Vermont, Burlington, VT, USA FULL ABSTRACT
HIDALGO, FERNANDO	28 Reproductive season of the invasive cirripedia B. glandula in Puerto Madryn, Argentina: Clues for understanding their success. Paccotti, Vanesa1, Palacio, Romina1, Bazterrica, María Cielo2, Hidalgo, Fernando2, Crain, Caitlin3, Bertness, Mark3, 1 Universidad Nacional de la Patagonia San Juan Bosco, Puerto Madryn, Chubut, Argentina2 Universidad Nacional de Mar del Plata, Mar del Plata, Buenos Aires, Argentina3 Brown University, Providence, RI, USA FULL ABSTRACT
HIDALGO, FERNANDO	6 The green crab invasion to Patagonia: Understanding the adaptation of the invader to a new environment and predicting its potential impacts. Hidalgo, Fernando*,1, Baron, Pedro2, Bazterrica, Cielo1, Leal, Gustavo2, Silliman, Brian3, Bertness, Mark4, 1 Universidad Nacional de Mar del Plata, Mar del Plata, Argentina2 CENPAT-CONICET, Puerto Madryn, Chubut, Argentina3 Virginia Institute of Marine Science, VA, USA4 Brown University, Providence, RI, USA FULL ABSTRACT
HIEBERT, RON	13 Predicting alien plant distributions in natural landscapes following disturbance removal. Dow, Talise*,1, Hiebert, Ron1, McEachern, Kathryn2, 1 Northern Arizona University, Flagstaff, AZ, USA2 USGS-BRD, Ventura, CA, USA FULL ABSTRACT
HIGUCHI, NIRO	156 Slow growth rates of Amazonian trees: Consequences for carbon cycling. Vieira, Simone*,1, Trumbore, Susan2, Camargo, Plínio1, Selhorst, Diogo3, Higuchi, Niro4, Martinelli, Luiz, 1 Centrro de Energia Nuclear na Agricultura, Piracicaba, São Paulo, Brasil2 University of California, Irvine, Irvine, CA, USA3 SETEM - Universidade Federal do Acre, Rio Branco, Acre, Brasil4 INPA, Manaus, Amazonas, Brasil FULL ABSTRACT
HINES, ANSON	Biological invasions in coastal marine ecosystems: Past, present, and future. Ruiz, Gregory*,1, Fofonoff, Paul1, Miller, A1, Hines, Anson1, 1 Smithsonian Environmental Research Center, Edgewater, MD, USA FULL ABSTRACT
HOLLENHORST, STEVE	Impact of payments for environmental services on the livelihood strategies of rural landowners. Morse, Wayde1, Stoian, Dietmar2, Hollenhorst, Steve 1, Harvey, Celia2, Wulfhorst, J.D.1, McLaughlin, Bill 1, 1 University of Idaho, Moscow, ID, USA2 Centro Agronómico Tropical de Investigación y Enseñanza (CATIE), Turrialba, Costa Rica FULL ABSTRACT
HOLMGREN, MILENA	Could ENSO events change the invasibility of semiarid herbaceous communities? Gutiérrez, Julio*,1, Manrique, Rosa1, Holmgren, Milena2, Squeo, Francisco1, 1 Universidad de La Serena, La Serena, Chile2 Resource Ecology Group, Wageningen University, Wageningen, The Netherlands FULL ABSTRACT
HOOKER, TOBY	14 Changes in soil nitrogen and carbon cycling in big sagebrush ecosystems following exotic grass introduction and invasion. Stark, John*,1, Hooker, Toby1, Saetre, Peter1, Norton, Urszula1, 1 Utah State University, Logan, UT, USA FULL ABSTRACT
HOOPER-BUI, LINDA	5 Argentine ant and fire ant aggressive interactions in shared expansion habitats. Hooper-Bui, Linda*,1, Rosson, Jessica1, Geaghan, James 1, Cannizzaro, Leon 1, Carroll, Matthew1, Seymour, Michael1, Dash, Shawn1, 1 Louisiana State University, Baton Rouge, LA, USA FULL ABSTRACT
HOOPER-BMISSING CHARACTER ENTITY: UGRAVEI, LINDA	24 Effect of aerial bait applications against invasive fire ant impacts on native quail. Seymour, Michael*,1, Hooper-Bùi, Linda1, Sanders, Dearl2, 1 Louisiana State University, Baton Rouge, LA, USA2 Louisiana State University, Clinton, LA, USA FULL ABSTRACT
HOST, GEORGE	143 Development of a long-term, multi-scale monitoring program that integrates numerous ecosystem components. Beever, Erik*,1, Route, Bill1, Host, George2, Gafvert, Ulf1, Elias, Joan1, Sanders, Suzanne1, 1 U.S. Dept. of Interior, National Park Service, Great Lakes Network, Ashland, WI, USA2 University of Minnesota, Duluth, MN, USA FULL ABSTRACT
HU, X.	12 Investigating a potential defense gene which confers resistance to soybean cyst nematode, an invasive species. Welch, Venus *,1, Lu, G.2, Hu, X.2, Miller, J.2, 1 Tuskegee University, Tuskegee, AL, USA2 Pioneer Hi-Bred International, Des Moines, IA, USA FULL ABSTRACT
HUBER SANNWALD, ELISABETH	115 Characterization of the biological soil crust in a degraded semiarid grassland ecosystem in Northern Mexico. Jiménez Aguilar, Angélica*,1, Huber Sannwald, Elisabeth1, Smart, David 2, Belnap, Jayne 3, 1 Instituto Potosino de Investigación Científica y Tecnológica, San Luis Potosí, San Luis Potosí, México2 University of California, Davis, CA, USA3 U.S. Geological Survey-Biological Resources Division, Moab, UT, USA FULL ABSTRACT
HUBER-SANNWALD, ELISABETH	110 Associations between grass species and soil biological crusts affect C and N dynamics in a degraded grassland ecosystem of Northern Mexico. Huber-Sannwald, Elisabeth *,1, Jimenez Aguilar, Angelica1, Gonzalez Aviles, Berta Yazmin 2, Escobar, Aron 3, Smart, David 4, Belnap, Jayne 5, Arredondo, Tulio1, 1 Instituto Potosino de Investigacion Cientifica y Tecnologica, San Luis Potosi, S.L.P., Mexico2 Universidad de Guadalajara, Guadalajara, JAL, Mexico3 Universidad Autonoma de San Luis Potosi, San Luis Potosi, SLP, Mexico4 University of California, Davis, CA, USA5 US Geological Survey - Biological Resources Division, Moab, UT, USA FULL ABSTRACT
HUBER-SANNWALD, ELISABETH	120 Grazing effects on root fungal symbionts and soil biogeochemical properties in semiarid grasslands of Central Mexico. Medina-Roldán, Eduardo*,1, Arredondo, Tulio1, Huber-Sannwald, Elisabeth1, 1 Instituto Potosino de Investigación Científica y Tecnológica, San Luis Potosí, San Luis Potosí, México FULL ABSTRACT
HUERTA, PATRICIA	144 Revisiting land use change dynamics at the Peruvian Amazon Basin. Avendano, Francisco*,1, Huerta, Patricia2, Portuguez, Hubert2, 1 National Environmental Council - CONAM, Lima, Peru2 National Institute for Natural Resources - INRENA, Lima, Peru FULL ABSTRACT
HUGELEN, LINDA	111 Land use and rangeland soil seed bank composition on Standing Rock Indian Reservation. Hugelen, Linda*,1, 2, Rickerl, Diane 1, 1 South Dakota State University, Brookings, SD, USA2 Sitting Bull College, Fort Yates, ND, USA FULL ABSTRACT
HUGHES, FLINT	147 Ecosystem carbon pools after deforestation and agricultural land use conversions along a climatic gradient in Costa Rica. Jobse, Judith*,1, Kauffman, Boone2, Watson, Vincente3, Hughes, Flint2, 1 Oregon State University, Corvallis, OR, USA2 Institute of Pacific Islands Forestry, USDA Forest Service, Hilo, HI, USA3 Tropical Science Center, San José, Costa Rica FULL ABSTRACT
HUSPENI, TODD	17 The introduced ribbed mussel (Geukensia demissa) in Estero de Punta Banda, Mexico: Interactions with the native cord grass, Spartina foliosa. Torchin, Mark1, Hechinger, Ryan 2, Huspeni, Todd*,2, Whitney, Kathleen 2, Lafferty, Kevin 3, 1 Smithsonian Tropical Research Institute, APO, AA2 University Of California, Santa Barbara, CA, USA3 USGS, Santa Barbara, CA, USA FULL ABSTRACT
HUSTON, MICHAEL	The Three Phases of Land Use Change: Implications for Biodiversity in Developed and Developing Countries. Huston, Michael *,1, 1 Department of Biology, San Marcos, TX FULL ABSTRACT
HUSTON, MICHAEL	The three phases of land use change: Implications for biodiversity in developed and developing countries. Huston, Michael *,1, 1 Texas State University, San Marcos, TX, USA FULL ABSTRACT
HUSZAR , PAUL	Interaction of climate change, soybean expansion, management styles and deforestation processes in the Chaco ecoregion of Argentina. Bucher , Enrique *,1, Huszar , Paul 2, Toledo , Carlos 1, 1 Universidad Nacional de Córdoba, Córdoba, Argentina2 Colorado State University, Ft. Collins, CO, USA FULL ABSTRACT
HUTH, ANDREAS	141 "Tala hormiga" -- Simulating long-term impacts of low-intensity fuel wood extraction on tropical montane cloud forest in central Veracruz, Mexico. Rueger, Nadja*,1, Huth, Andreas1, Kissling, W. Daniel1, Williams-Linera, Guadalupe2, 1 UFZ - Centre for Environmental Research Leipzig-Halle, Leipzig, Germany2 Instituto de Ecología, A.C., Xalapa, Veracruz, Mexico FULL ABSTRACT
HYDE, KARLA	146 Vulnerability of human populations to demographic growth and changes in petroleum availability in the Yucatan Peninsula, Mexico. Hall, Charles*,1, Hyde, Karla1, Hall, Myrna1, Salas, Silvia2, Castello, Leandro 1, 1 State University of New York, Syracuse, NY, USA2 Centro de Investigacions y de Estudios Avanzados, Unidad Merida, Merida, Yucatan, Mexico FULL ABSTRACT