Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Anais da ABC (AABC) (1) ArchiMer (1) Ecology and Society (1) Autor Bertin, Xavier (1) Chaumillon, Eric (1) Dillenburg,Sérgio R. (1) Esteves,Luciana S. (1) Gold, Barry; The David and Lucile Packard Foundation; bgold@packard.org (1) Korman, Josh; Ecometric Research Inc.; jkorman@ecometric.com (1) Poirier, Clement (1) Sauriau, Pierre-guy (1) Stevens, Lawrence E; Stevens Ecological Consulting; farvana@aol.com (1) Tomazelli,Luiz J. (1) Walters, Carl J; University of British Columbia; c.walters@fisheries.ubc.ca (1) Mais... Palavra-chave Sediment budget (3) Adaptive management (1) Aquatic primary productivity (1) Benthos (1) Coastal barriers (1) Coastal evolution (1) Colorado River (1) Dam (1) Ecosystem models (1) Estuary (1) Grand Canyon (1) Habitat restoration (1) Holocene (1) Hydrology (1) Insect productivity (1) Native fishes (1) Paleoecology (1) Quaternary (1) Riparian ecosystems (1) Shoreline changes (1) Mais... Tipo do documento Info:eu-repo/semantics/article (1) Peer-Reviewed Reports (1) Text (1) Ano 2010 (1) 2004 (1) 2000 (1) País Brazil (1) Canada (1) France (1) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 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 Influence of hydro-sedimentary factors on mollusc death assemblages in a temperate mixed tide-and-wave dominated coastal environment: Implications for the fossil record ArchiMer Poirier, Clement; Sauriau, Pierre-guy; Chaumillon, Eric; Bertin, Xavier. Mollusc death assemblages were recovered in 98 subtidal sampling stations on the seafloor of the shallow Pertuis Charentais Sea (Atlantic coast of France). Taxonomic composition and spatial distribution of death assemblages were investigated, as well as their response to sediment grain size (field data), bottom shear stress (coupled tide and wave hydrodynamic modelling), and sediment budget (bathymetric difference map) Results showed that molluscs are likely to be reliable paleoenvironmental indicators since death assemblages were able to acquire ecological changes within years (decadal-scale taphonomic inertia), and live-dead agreement inferred from existing data on living benthic communities was high, except close to river mouths and intertidal mudflats... Tipo: Text Palavras-chave: Benthos; Estuary; Holocene; Paleoecology; Sediment budget; Taphonomy. Ano: 2010 URL: http://archimer.ifremer.fr/doc/00017/12814/10260.pdf A critical evaluation of coastal erosion in Rio Grande do Sul, Southern Brazil Anais da ABC (AABC) Dillenburg,Sérgio R.; Esteves,Luciana S.; Tomazelli,Luiz J.. Evidences of coastal erosion in Rio Grande do Sul have been obtained by three methods: (a) analysis of the long-term morphodynamics and stratigraphy of coastal barriers, (b) annual shoreline mapping using the Differential Global Positioning System (DGPS), and (c) local beach profile measurements. The first method reflects coastal erosion as continuity of the geological evolution in the last 5 ka, taking place mainly along the southern half of gentle coastal projections. The second method represents a shorter temporal scale and indicates that approximately 80% of the coast is eroding. Beach profiling has been measured in very few places that are distant from each other since the early 1990s; consequently, their results reflect local and very short time... Tipo: Info:eu-repo/semantics/article Palavras-chave: Coastal evolution; Quaternary; Shoreline changes; Coastal barriers; Sediment budget. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000300014 Registros recuperados: 3 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