Data/hora: 13/06/2024 04:55:53

Provedor de dados: | 5
País: | France
Título: | Notes on survey-based spatial indicators for monitoring fish populations
Autores: | Woillez, Mathieu; Rivoirard, Jacques; Petitgas, Pierre.
Data: | 2009-04
Ano: | 2009
Palavras-chave: | Fish populations; Spatial patterns; Monitoring; Spatial indicators.
Resumo: | This paper presents the spatial indicators used in the European project FISBOAT. These are statistics intended to capture spatial patterns of fish populations, using fish density data collected during scientific surveys. To handle diffuse population limits, indicators are designed not to depend on arbitrary delineation of the domain. They characterize the location (centre of gravity and spatial patches), occupation of space (inertia, isotropy, positive area, spreading area and equivalent area) and microstructure. Collocation between different populations is summarized by a global index of collocation. These spatial indicators have the potential to be used in a monitoring system to detect changes in spatial distribution. They could be helpful for relating the spatial distribution properties of fish stocks to their dynamics, their habitats, or to climate change.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/2009/publication-6687.pdf

DOI:10.1051/alr/2009017

Editor: | EDP Sciences
Relação: | http://archimer.ifremer.fr/doc/00000/6687/
Formato: | application/pdf
Fonte: | Aquatic Living Resources (0990-7440) (EDP Sciences), 2009-04 , Vol. 22 , N. 2 , P. 155-164
Fonte: | EDP Sciences, IFREMER, IRD 2009