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	Provedor de dados 5 (1) 7 (1) Autor Carlson, Matthew; University of Alberta; mjc@ualberta.ca (1) Carter, B. R. (1) Dunne, J. P. (1) Frolicher, T. L. (1) Rodgers, K. B. (1) Sarmiento, J. L. (1) Schmiegelow, Fiona; University of Alberta; Fiona.schmiegelow@ualberta.ca (1) Slater, R. D. (1) Mais... Palavra-chave Trend detection (2) Alkalinity (1) Allocation of sample effort (1) Boreal birds (1) Carbon cycle (1) Carbonate system (1) Community metrics (1) Cost-effective sample design (1) Forest bird populations (1) Long-term monitoring (1) Ocean acidification (1) Partial derivatives (1) Power analysis (1) Repeat hydrography (1) Sample error (1) Temporal and spatial variation (1) Mais... Tipo do documento Peer-Reviewed Reports (1) Text (1) Ano 2016 (1) 2002 (1) País Canada (1) France (1) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Cost-effective Sampling Design Applied to Large-scale Monitoring of Boreal Birds 7 Carlson, Matthew; University of Alberta; mjc@ualberta.ca; Schmiegelow, Fiona; University of Alberta; Fiona.schmiegelow@ualberta.ca. Despite their important roles in biodiversity conservation, large-scale ecological monitoring programs are scarce, in large part due to the difficulty of achieving an effective design under fiscal constraints. Using long-term avian monitoring in the boreal forest of Alberta, Canada as an example, we present a methodology that uses power analysis, statistical modeling, and partial derivatives to identify cost-effective sampling strategies for ecological monitoring programs. Empirical parameter estimates were used in simulations that estimated the power of sampling designs to detect trend in a variety of species’ populations and community metrics. The ability to detect trend with increased sample effort depended on the monitoring target’s... Tipo: Peer-Reviewed Reports Palavras-chave: Allocation of sample effort; Boreal birds; Community metrics; Cost-effective sample design; Forest bird populations; Long-term monitoring; Partial derivatives; Power analysis; Sample error; Temporal and spatial variation; Trend detection. Ano: 2002 When can ocean acidification impacts be detected from decadal alkalinity measurements? 5 Carter, B. R.; Frolicher, T. L.; Dunne, J. P.; Rodgers, K. B.; Slater, R. D.; Sarmiento, J. L.. We use a large initial condition suite of simulations (30 runs) with an Earth system model to assess the detectability of biogeochemical impacts of ocean acidification (OA) on the marine alkalinity distribution from decadally repeated hydrographic measurements such as those produced by the Global Ship-Based Hydrographic Investigations Program (GO-SHIP). Detection of these impacts is complicated by alkalinity changes from variability and long-term trends in freshwater and organic matter cycling and ocean circulation. In our ensemble simulation, variability in freshwater cycling generates large changes in alkalinity that obscure the changes of interest and prevent the attribution of observed alkalinity redistribution to OA. These complications from... Tipo: Text Palavras-chave: Alkalinity; Ocean acidification; Trend detection; Repeat hydrography; Carbon cycle; Carbonate system. Ano: 2016 URL: https://archimer.ifremer.fr/doc/00383/49419/49860.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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