Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Ecology and Society (2) Autor Taylor, Philip D; Acadia University; ptaylor@resalliance.org (2) Jonsen, Ian; University of Alberta; jonseni@em.agr.ca (1) Nocera, Joseph J; Acadia University; 023758n@acadiau.ca (1) Palavra-chave Behavioral toxicology (1) Calopteryx aequabilis (1) Calopteryx maculata (1) Canada (1) Common loon behavior (1) Connectivity (1) Damselflies (1) Gavia immer (1) Kejimkujik National Park (1) Landscape structure (1) Mercury (1) Movement behaviors (1) Multiscale dispersion (1) Neurotoxicity (1) Nova Scotia (1) Patch boundary permeability (1) Patch viscosity (1) Simulation model (1) Southwestern New Brunswick (1) Spatial scale (1) Mais... Tipo do documento Peer-Reviewed Reports (2) Ano 2000 (1) 1998 (1) País Canada (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Calopteryx Damselfly Dispersions Arising from Multiscale Responses to Landscape Structure Ecology and Society Jonsen, Ian; University of Alberta; jonseni@em.agr.ca; Taylor, Philip D; Acadia University; ptaylor@resalliance.org. Using spatially explicit simulation models, we explored the extent to which fine-scale (i.e., meters to tens of meters) movement behaviors could be used to predict broader scale patterns of distribution on heterogeneous landscapes. Our models were tailored by empirical data on Calopterygid damselfly movements on three types of landscapes that differed in amount of forest habitat. Surveys of the two congeneric damselflies, Calopteryx aequabilis and Calopteryx maculata, demonstrated that both species occupied stream and forest habitats on forested and partially forested landscapes, but were found primarily along streams on nonforested landscapes. Simulation models whose parameters were derived using empirical movement data for both species showed that... Tipo: Peer-Reviewed Reports Palavras-chave: Calopteryx aequabilis; Calopteryx maculata; Connectivity; Damselflies; Landscape structure; Movement behaviors; Multiscale dispersion; Patch boundary permeability; Patch viscosity; Simulation model; Spatial scale. Ano: 2000 In Situ Behavioral Response of Common Loons Associated with Elevated Mercury (Hg) Exposure Ecology and Society Nocera, Joseph J; Acadia University; 023758n@acadiau.ca; Taylor, Philip D; Acadia University; ptaylor@resalliance.org. Common Loons (Gavia immer) in Nova Scotia, Canada have the highest blood mercury (Hg) concentrations of any loon population in North America. Previous studies have shown that exposure to varying levels of Hg in prey is associated with changes in pre-nesting adult behavior. We report here the first association of sublethal blood Hg contamination with changes in behavior of Common Loon young. As Hg levels in their blood rise, the amount of time that chicks spend brooding (by back-riding) decreases (P = 0.004) and time spent preening increases (P = 0.003). The sum increase in energy expenditure is not being compensated for with expected increases in feeding rates or begging. We suggest that such altered time-activity budgets may disrupt the energetic balance... Tipo: Peer-Reviewed Reports Palavras-chave: Behavioral toxicology; Common loon behavior; Gavia immer; Kejimkujik National Park; Nova Scotia; Canada; Mercury; Neurotoxicity; Southwestern New Brunswick; Sub-lethal exposure; Time-activity budgets.. Ano: 1998 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