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Inter-annual variability of North Sea plaice spawning habitat ArchiMer
Loots, Christophe; Vaz, Sandrine; Koubbi, P.; Planque, Benjamin; Coppin, Franck; Verin, Yves.
Potential spawning habitat is defined as the area where environmental conditions are suitable for spawning to occur. Spawning adult data from the first quarter (January-March) of the International Bottom Trawl Survey have been used to study the inter-annual variability of the potential spawning habitat of North Sea plaice from 1980 to 2007. Generalised additive models (GAM) were used to create a model that related five environmental variables (depth, bottom temperature and salinity, seabed stress and sediment type) to presence-absence and abundance of spawning adults. Then, the habitat model was applied each year from 1970 to 2007 to predict inter-annual variability of the potential spawning habitat. Predicted responses obtained by GAM for each year were...
Tipo: Text Palavras-chave: Potential Habitat; Generalised Additive Models; Spawning; Inter-annual Variability; North Sea plaice; Spatial Distribution.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00018/12900/9932.pdf
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