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|Title: ||Regional and local environmental correlates of native Iberian fish fauna|
|Authors: ||Ferreira, Maria T.|
Santos, José M.
Almeida, Pedro R.
|Keywords: ||habitat requirements|
|Issue Date: ||2007|
|Abstract: ||Knowledge of fishes’ habitat requirements is an essential tool
for species conservation. We examined the habitat requirements of nine
native freshwater fish species using 165 undisturbed or minimally
disturbed sites from eight river basins in western Iberia (northern and
central Portugal). Six environmental descriptors were considered at the
regional level, and six descriptors at a local scale. Statistical associations
between local assemblage structure and environmental variables were
quantified by canonical correspondence analyses. Logistic regression was
performed for each species to identify regional and local factors related to
its distribution at the sample sites. The results suggested a reasonable
degree of specialisation in the use of local variables and dependence on
regional variables. Logistic regression models showed a good adjustment
(0.75 < AUC < 0.93). Results of habitat modelling using minimally
disturbed sites helped to clarify species preferences for specific abiotic
|Appears in Collections:||BIO - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica|
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