| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Relationships between population spatial occupation and population dynamics
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| Autores: |
Woillez, Mathieu
Petitgas, Pierre
Rivoirard, Jacques
Fernandes, Paul
Hoftstede, Remment Ter
Korsbrekke, Knut
Orlowski, Andrzej
Spedicato, Maria-teresa
Politou, Chrissi-yianna
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| Data: |
2006
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| Ano: |
2006
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| Palavras-chave: |
Spatial indices population dynamics
Meta-analysis.
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| Resumo: |
Population dynamics is commonly described non-spatially using parameters of population demography and vital traits. Population spatial organisation is therefore considered implicit and its importance in the population dynamics ignored. The present study evidences on a variety of stocks correlation between population spatial distribution indices, population abundance, recruitment and mortality. Series of research fisheries monitoring surveys were considered for a range of different stocks (cod, herring, anchovy, hake, mullet) in different regions of the North East Atlantic and Mediterranean (North Sea, Barents Sea, Baltic Sea, Bay of Biscay, Tyrrhenian Sea, Ionian Sea and Aegean Sea). For each population, each age and each year, 9 spatial indices were computed that characterised the spatial distribution in their centre of gravity, inertia, anisotropy, extension areas, number of patches and microscale structure. For each population and age, spatial indices were linearly regressed on the abundance, on the following recruitment, and on the mortality residuals (as a constant mortality has been fitted on cohort curves). A metaanalysis table was constructed that showed the number of times that correlations were significant. The result is that spatial indices provide additional indicators for assessing population status and could be helpful in the context of stock decline and habitat loss.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/00133/24376/22388.pdf
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| Editor: |
CM 2006/O:05
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| Relação: |
http://archimer.ifremer.fr/doc/00133/24376/
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| Formato: |
application/pdf
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| Direitos: |
2006 International Council for the Exploration of the Sea
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