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Toward a Dynamical Approach for Systematic Conservation Planning of Eastern English Channel Fisheries ArchiMer
Reecht, Yves; Gasche, Loïc; Lehuta, Sigrid; Vaz, Sandrine; Smith, Robert J; Mahevas, Stephanie; Marchal, Paul.
In the past decade, systematic conservation planning tools have been increasingly and successfully used to set spatial conservation plans that meet quantitative protection targets while minimizing enforcement and socioeconomic costs. However, when applied to fisheries, systematic conservation planning fails to account for (1) changes in fleet dynamics induced by new conservation constraints and their associated feedbacks on conservation costs or (2) their influence on fish population dynamics and distributions, which may in turn alter the achievement of conservation targets. Such a static approach may therefore lead to short- or medium-term misestimates in forecasted costs and target achievements. In order to circumvent such limitations of systematic...
Tipo: Text Palavras-chave: MPAs; Systematic conservation planning; Mixed fisheries dynamics; Model coupling; Eastern English Channel; Marxan with Zones; ISIS-Fish.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00293/40421/39077.pdf
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Trophic resources and mercury exposure of two silvertip shark populations in the northeast Pacific Ocean ArchiMer
Le Croizier, Gaël; Lorrain, Anne; Schaal, Gauthier; Ketchum, James; Hoyos-padilla, Mauricio; Besnard, Lucien; Munaron, Jean-marie; Le Loch, Francois; Point, David.
Worldwide shark populations have experienced rapid declines over the last decades, mainly due to overfishing. Marine protected areas (MPAs) have thus become an indispensable tool for the protection of these marine predators. Two recently-created MPAs in the Northeast Pacific Ocean, the Revillagigedo National Park and Clipperton atoll, are characterized by different trophic structures potentially influencing trophic niche and contaminant exposure for resident sharks in these two sites. In this context, we used carbon (δ13C) and nitrogen (δ15N) stable isotope analyzes as well as total mercury concentrations ([THg]) to assess the role of foraging site on the trophic niche and Hg levels of juvenile ST sharks Carcharhinus albimarginatus. Analyzing fin clip...
Tipo: Text Palavras-chave: Top-predators; Mercury transfer; Food webs; Foraging habitat; Stable isotopes; MPAs.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00619/73114/72257.pdf
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Safe Harbors: The Many Benefits of Marine Monuments and Sanctuaries ArchiMer
Bruno, John F.; Saumweber, Whitley; Crowder, Larry B.; Pendleton, Linwood; Roady, Stephen E.; Rouleau, Tracy; Sakashita, Miyoko.
The United States has been at the forefront of marine resource stewardship since the 1970s when Federal officials began to implement a series of national policies aimed at the conservation and management of public trust resources in the ocean. Beginning with the establishment of the National Oceanic and Atmospheric Administration in 1970, soon followed by several pieces of landmark legislation, this era marked the start of a continuing effort to integrate ecosystem science with marine resource management. Among the most important bipartisan legacies of this effort has been the steady expansion of marine managed areas in U.S. coastal and ocean waters. This legacy is being challenged as the Trump Administration considers whether to alter or eliminate the...
Tipo: Text Palavras-chave: Marine ecosystem; Conservation; Policy analysis; Biodiversity; MPAs; Reserves.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00636/74810/75183.pdf
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