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Registros recuperados: 5
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Ecoviability for small-scale fisheries in the context of food security constraints ArchiMer
Cisse, Abdoul; Doyen, L.; Blanchard, Fabian; Bene, Christophe; Pereau, J. -c..
This paper applies a stochastic viability approach to a tropical small-scale fishery, offering a theoretical and empirical example of ecosystem-based fishery management approach that accounts for food security. The model integrates multi-species, multi-fleet and uncertainty as well as profitability, food production, and demographic growth. It is calibrated over the period 2006–2010 using monthly catch and effort data from the French Guiana's coastal fishery, involving thirteen species and four fleets. Using projections at the horizon 2040, different management strategies and scenarios are compared from a viability viewpoint, thus accounting for biodiversity preservation, fleet profitability and food security. The analysis shows that under certain...
Tipo: Text Palavras-chave: Small-scale fishery; Biodiversity; Sustainability; Profitability; Food security; Multi-species; Multi-fleet; Stochasticity; Viability; Scenario.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00276/38732/37310.pdf
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Evaluation, scénarios et viabilité écologique et économique des pêcheries côtières tropicales : application au cas de la Guyane Française ArchiMer
Cisse, Abdoul.
The need for an integrated approach to fisheries is now widely affirmed, including the FAO, in particular in the context of tropical artisanal fisheries. These small-scale fisheries, often multispecies are very important in terms of production, employment and food security. However these fisheries and the exploited resources are often characterized by a lack of data making difficult their management within an ecosystem approach, and by the ecological and economic system complexities including trophic and technological interactions. This thesis aims to contribute to the development of bioeconomic tools for small tropical fisheries in a sustainable management perspective based on the ecosystem approach. In this perspective, the French Guiana coastal fishery...
Tipo: Text Palavras-chave: Pêcherie tropicale à petite échelle; Multi-flottilles; Multispécifique; Approche ecosystémique; Analyse multivariée; Intéractions trophiques; Modélisation bioéconomique; Indicateurs bioéconomiques; Analyse de viabilité; Stochasticité; Théorie des jeux.; Tropical small-scale fishery; Multi-fleet; Multi-species; Ecosystem approach; Multivariate analysis; Trophic interactions; Bioeconomic modeling; Bio-indicators; Sustainability analysis; Stochasticity; Game theory.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00144/25492/23646.pdf
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In silico approach for viral mutations and sustainability of immunizations. Repositório Alice
CASTRO, A. de.
In this paper we use virtual samples of individuals and a dynamical modeling proposed in a previous study to study the behavior of immune memory against antigenic mutation.
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Memória imunológica; Imunologia computacional; Estocasticidade; Mutação viral; Células B; Vacina; Immune memory; Computational immunology; Viral mutation; Stochasticity; B cells; Imunologia; Mutação; Immunology; Immunologic memory; Mutation; Stochastic processes; Vaccines.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1030086
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Resilience, Social-Ecological Rules, and Environmental Variability in a Two-Species Artisanal Fishery Ecology and Society
Duer-Balkind, Marshall; Department of the Environment, Washington, DC; School of Forestry and Environmental Studies, Yale University, New Haven, CT, USA; marshall@aya.yale.edu; Jacobs, Kasey R.; NOAA Coastal Management Fellow at the Puerto Rico Coastal Zone Management Program, San Juan, PR; School of Forestry and Environmental Studies, Yale University, New Haven, CT, USA; kasey.jacobs@aya.yale.edu; Basurto, Xavier; Duke Marine Lab, Nicholas School of the Environment, Duke University, Beaufort, NC, USA; xavier.basurto@duke.edu.
Social-ecological resilience is an increasingly central paradigm for understanding sustainable resource management. In this study, we aimed to better understand the effect of environmental variability on the resilience of fishery systems, and the important role that social institutions and biophysical constraints play. To explore these issues, we built a dynamic model of the pen shell fishery of the indigenous Seri people in the Gulf of California, Mexico. This model included the dynamics of the two dominant species in the fishery (Atrina tuberculosa and Pinna rugosa), several institutional rules that the Seri use, and a number of ecological constraints, including key stochastic variables derived from empirical data. We found that modeling with multiple...
Tipo: Peer-Reviewed Reports Palavras-chave: Artisanal fisheries; Common-pool resources; Environmental variability; Gulf of California Mexico; Multi-species; Resilience; Social-ecological systems; Stochasticity; System dynamics.
Ano: 2013
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The dynamics of natural populations: feedback structures in fluctuating environments RChHN
LIMA,MAURICIO.
The fluctuations exhibited by natural populations have fascinated ecologists for the last eighty years. However, a vigorous debate between different schools of population ecologists has hampered reaching a consensus about the causes of such numerical fluctuations. Recent findings and a more synthetic view of population change espoused by ecologists, statisticians, and mathematicians have integrated the role of nonlinear feedback (deterministic) and external environmental (deterministic or stochastic) processes in the dynamics of natural populations. The new challenge for population ecologists is to understand how these two different forces interact in nature. In this commentary, I review some of the basic principles of population analysis during the last...
Tipo: Journal article Palavras-chave: Population dynamics; Feedback structure; Exogenous factors; Seasonal regulation; Stochasticity; Food web structure; Climate.
Ano: 2001 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000200009
Registros recuperados: 5
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