Author(s): Goncalo Duarte; Paulo Branco; Gertrud Haidvogl; Didier Pont; Maria Teresa Ferreira; Pedro Segurado
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Keywords: No Keywords
Abstract: Several European diadromous fish species have been declining or going regionally extinct at least since the beginning of the 20th century. In this work, we combined historical information and empirical modelling techniques to estimate the potential distribution of several European diadromous fish species at the beginning of the 20th century. The models also included, as explanatory variables, historical climate, historical land use and river network features. A hierarchically structured effect among explanatory variables was taken into account in the modelling procedure, assuming that different set of variables operated at different spatial resolutions in the European river networks. Climate variables were overall more relevant than land use variables and most species seem to be sensitive to elevated temperature ranges. This work can help identify and establish adequate management and restoration objectives.
Year: 2018