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Using a spatially structured life cycle model to assess the influence of multiple stressors on an exploited coastal-nursery-dependent population ArchiMer
Archambault, B.; Rivot, E.; Savina-rolland, Marie; Le Pape, Olivier.
Exploited coastal-nursery-dependent fish species are subject to various stressors occurring at specific stages of the life cycle: climate-driven variability in hydrography determines the success of the first eggs/larvae stages; coastal nursery habitat suitability controls juvenile growth and survival; and fisheries target mostly adults. A life cycle approach was used to quantify the relative influence of these stressors on the Eastern English Channel (EEC) population of the common sole (Solea solea), a coastal-nursery-dependent flatfish population which sustains important fisheries. The common sole has a complex life cycle: after eggs hatch, larvae spend several weeks drifting in open water. Survivors go on to metamorphose into benthic fish. Juveniles...
Tipo: Text Palavras-chave: Life cycle model; Spatial processes; Metapopulation; Coastal nursery habitat degradation; Fishing; Solea; Multiple stressors; Scenarios.
Ano: 2018 URL: http://archimer.ifremer.fr/doc/00301/41213/40367.pdf
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Where Is American Agriculture in Its "Life Cycle"? AgEcon
Blank, Steven C..
The increasing globalization of agricultural markets in recent decades appears to be changing the economics of the American production agriculture sector, reducing its economic importance and raising questions about its life cycle. This study contributes to the product life cycle literature by creating tests of hypotheses about the economic life of American production agriculture. A methodology to test the hypotheses is proposed and then applied in an empirical analysis. In general, it appears that a new stage in American agriculture's life began during the 1973-1983 period. Finally, the results and their implications for the American production agriculture sector are discussed.
Tipo: Journal Article Palavras-chave: Absolute advantage; Comparative advantage; Global markets; Life cycle model; Agribusiness.
Ano: 2003 URL: http://purl.umn.edu/31065
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