Seguiments i estudis de la comunitat de mamífers a l’Estany d’Ivars i Vila- Sana

En David Guixé i en Fermí Sort (EGRELL) han publicat  recentment un article de divulgació sobre el seguiment i els estudis de mamífers que es realitzen des del 2005 a l’Estany d’Ivars i Vila-sana i que serà inclós en el recull de les V Jornades d’estudis sobre el Pla d’Urgell.

Títol: Seguiments i estudis de la comunitat de mamífers a l’Estany d’Ivars i Vila-Sana

Abstract:

Mammals are a group with high conservation interest species. Many species of this group are living in Ivars and Vila-Sana area, and some of them are bioindicators or threatened. Therefore we have to make the best management actions for their conservation.
The Ivars and Vila-Sana natural area had been dried completely in 1951 and recovery project was started in 2002.
Since 2005 the Institute for the Study, Management and Ecosystem Recovery Lleida (EGRELL) and the Forest Science Centre of Catalonia (CTFC) carried out several projects to study the status and abundance of the vertebrate fauna species existing in the basin of the lake and see the importance of this area in the whole of Lleida Plains.
Monitoring small mammals with trapping sessions is an important long term project in order to obtain data on species abundance and to observing changes in their communities as well as possible factors of threat that may arise. The most abundant species is the wood mouse (Apodemus sylvaticus) and White-toothed Shrew (Crocidura russula). Instead Western Mediterranean Mouse (Mus spretus), which some years ago had a higher frequency than wood mouse, appears which some years ago had a higher frequency than wood mouse, nowadays appears to be less abundant due to a new wetland landscape. The water vole has still present in water courses and seems to be increasing its populations.
We must also say that in this natural area, have been found 10 different species of bats. The most common species is a Pygmy Pipistrelle (Pipistrellus pygmaeus), a species very abundant in wetlands. The Bat boxes show a tendency to increase bat occupancy, from 2 boxes occupied in October 2006 (3.13%) to a 35% of occupancy in 2013. A threatened species, the Long-fingered Bat (Myotis capaccinii) had been monitoring using radio tracking. It usualy folow large irrigation chanels, large ponds and the lake of Ivars and Vila-Sana for hunting.The natural caves where they breed are situated quite far, about 30 km in a straight line. Mammals are a group with high conservation interest species. Many species of this group are living in Ivars andVila-Sana area, and some of them are bioindicators or threatened. Therefore we have to make the bestmanagement actions for their conservation.The Ivars and Vila-Sana natural area had been dried completely in 1951 and recovery project was started in2002.Since 2005 the Institute for the Study, Management and Ecosystem Recovery Lleida (EGRELL) and the ForestScience Centre of Catalonia (CTFC) carried out several projects to study the status and abundance of thevertebrate fauna species existing in the basin of the lake and see the importance of this area in the whole ofLleida Plains.Monitoring small mammals with trapping sessions is an important long term project in order to obtain data onspecies abundance and to observing changes in their communities as well as possible factors of threat that mayarise. The most abundant species is the wood mouse (Apodemus sylvaticus) and White-toothed Shrew(Crocidura russula). Instead Western Mediterranean Mouse (Mus spretus), which some years ago had a higherfrequency than wood mouse, appears which some years ago had a higher frequency than wood mouse,nowadays appears to be less abundant due to a new wetland landscape. The water vole has still present in watercourses and seems to be increasing its populations.We must also say that in this natural area, have been found 10 different species of bats. The most commonspecies is a Pygmy Pipistrelle (Pipistrellus pygmaeus), a species very abundant in wetlands. The Bat boxes showa tendency to increase bat occupancy, from 2 boxes occupied in October 2006 (3.13%) to a 35% of occupancyin 2013. A threatened species, the Long-fingered Bat (Myotis capaccinii) had been monitoring using radiotracking. It usualy folow large irrigation chanels, large ponds and the lake of Ivars and Vila-Sana for hunting.The natural caves where they breed are situated quite far, about 30 km in a straight line.

Per més informació:

- Guixè, D. i Sort, F. (2015) Seguiments i estudis de la comunitat de mamífers a l’Estany d’Ivars i Vila-Sana. V Jornades d’Estudis sobre el Pla d’Urgell. Mollerussa, 18 d’octubre de 2014.

- Centre de recerques del Pla d’Urgell, Mascançà

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