Caracterización y uso del hábitat de la Nutria Lutra lutra (Linné, 1758) en un río de carácter mediterráneo

摘要: Habitat characterisation and use of the European river otter Lutra lutra (Linne, 1758) in a typical Mediterranean Between 1996 1997 study was carried out on ecology Bergantes (the Ebro basin). This has typically characteristics, with heavy oscillations water level which provoke great seasonal changes. Three individuals were captured (two females one male) implanted intraperitoneally transmitters tracked during 110, 111 y 117 days between November August 1997. tracking allowed us to obtain total 1320 locations stretch some 40 km. Data obtained home ranges, patterns activity, space resting sites. In parallel way, fluvial habitat studied, dividing area into 100 m stretches, aim establishing animals preferences each type habitat. Calculations made for vegetation Galemys 10 (no especial), 1998 176 cover, availability water, locations, number surface pools, ground, etc. At same time, electrofishing order establish food diversity fish species. By means multivariate analysis, relationships established described behaviour space. A high selection those areas where natural conditions best conserved observed, along negative most altered areas. Of factors important selection, development, presence pools stand out. These results an adequate management these efficient conservation