Ecological characterisation of streams in Tuscany (Italy) for the management of the threatened crayfish Austropotamobius pallipes complex

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Abstract

Any initiative aimed at the management of a threatened species needs a good knowledge of its environmental requirements. Aims of this study were to individuate suitable areas for the reintroduction of crayfish species belonging to the Austropotamobius pallipes complex and to evaluate the causes of the local extinction in Tuscany (Italy) of some populations. Between May 2003 and September 2004, we collected ecological data from 19 streams of 4 catchments, 9 watercourses where crayfish were present (WI) and 10 where they were present in the recent past and absent now (WO), and we compared them. Multivariate analyses were performed using chemico-physical and biotic parameters to examine the relationships between their values and the presence of crayfish. The results did not allow us to find significant differences between the two categories of streams, suggesting their suitability for crayfish reintroduction.

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Renai, B., Bertocchi, S., Brusconi, S., Gherardi, F., Grandjean, F., Lebboroni, M., … Trouilhe, M. C. (2006). Ecological characterisation of streams in Tuscany (Italy) for the management of the threatened crayfish Austropotamobius pallipes complex. In BFPP - Bulletin Francais de la Peche et de la Protection des Milieux Aquatiques (pp. 1095–1113). https://doi.org/10.1051/kmae:2006013

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