Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Ecology and Society (2) Autor Gold, Barry; The David and Lucile Packard Foundation; bgold@packard.org (1) Korman, Josh; Ecometric Research Inc.; jkorman@ecometric.com (1) Stevens, Lawrence E; Stevens Ecological Consulting; farvana@aol.com (1) Walters, Carl J; University of British Columbia; c.walters@fisheries.ubc.ca (1) Walters, Carl; University of British Columbia; c.walters@fisheries.ubc.ca (1) Palavra-chave Adaptive management (2) Riparian ecosystems (2) Aquatic primary productivity (1) Coastal ecosystems (1) Colorado River (1) Dam (1) Ecosystem management (1) Ecosystem models (1) Fisheries (1) Grand Canyon (1) Habitat restoration (1) Hydrology (1) Insect productivity (1) Institutional barriers (1) Management experiments (1) Modeling (1) Native fishes (1) Sediment budget (1) Simulation (1) Mais... Tipo do documento Peer-Reviewed Reports (2) Ano 2000 (1) 1997 (1) País Canada (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Ecosystem Modeling for Evaluation of Adaptive Management Policies in the Grand Canyon Ecology and Society Walters, Carl J; University of British Columbia; c.walters@fisheries.ubc.ca; Korman, Josh; Ecometric Research Inc.; jkorman@ecometric.com; Stevens, Lawrence E; Stevens Ecological Consulting; farvana@aol.com; Gold, Barry; The David and Lucile Packard Foundation; bgold@packard.org. An Adaptive Environmental Assessment and Management workshop process was used to assist Grand Canyon scientists and managers in developing conceptual and simulation models for the Colorado ecosystem affected by Glen Canyon Dam. This model examines ecosystem variables and processes at multiple scales in space and time, ranging from feet and hours for benthic algal response to diurnal flow changes, to reaches and decades for sediment storage and dynamics of long-lived native fish species. Its aim is to help screen policy options ranging from changes in hourly variation in flow allowed from Glen Canyon Dam, to major structural changes for restoration of more natural temperature regimes. It appears that we can make fairly accurate predictions about some... Tipo: Peer-Reviewed Reports Palavras-chave: Adaptive management; Aquatic primary productivity; Colorado River; Dam; Ecosystem models; Grand Canyon; Habitat restoration; Hydrology; Insect productivity; Native fishes; Riparian ecosystems; Sediment budget. Ano: 2000 Challenges in adaptive management of riparian and coastal ecosystems Ecology and Society Walters, Carl; University of British Columbia; c.walters@fisheries.ubc.ca. Many case studies in adaptive-management planning for riparian ecosystems have failed to produce useful models for policy comparison or good experimental management plans for resolving key uncertainties. Modeling efforts have been plagued by difficulties in representation of cross-scale effects (from rapid hydrologic change to long-term ecological response), lack of data on key processes that are difficult to study, and confounding of factor effects in validation data. Experimental policies have been seen as too costly or risky, particularly in relation to monitoring costs and risk to sensitive species. Research and management stakeholders have shown deplorable self-interest, seeing adaptive-policy development as a threat to existing research programs and... Tipo: Peer-Reviewed Reports Palavras-chave: Adaptive management; Coastal ecosystems; Ecosystem management; Fisheries; Institutional barriers; Management experiments; Modeling; Riparian ecosystems; Simulation. Ano: 1997 Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco