Alicia García-Serrano

Agricultural damages caused by wild boar Sus scrofa have given farmers a negative impression of protected areas and their management. To mitigate those damages and the social conflicts that they create, hunting battues involving experienced local hunters were used as a lethal population control method in a protected Iberian wetland. In the Ebro Sotos and Galachos Nature Reserve, Spain, between 1994 and 2011, 259 wild boars were culled during 476 battues. On average, battues involved six hunters and ten dogs, and culling efficiency (number of animals killed per animals seen during battues) was 39 %. The number of battues per year and the area of crop damages caused by wild boar were significantly negatively correlated, demonstrating battue efficiency to decrease damages. Moreover, intermittent population control through culling led to a substantial increase in the wild boar population, with an increase in crop damages. This underlines the importance of constant control. The numbers of hunters and...

Veinte años de seguimiento poblacional de ungulados silvestres de Aragón

Uso del conteo simultáneo supraforestal y del muestreo de distancias para estimar poblaciones de sarrio

Two political jurisdictions in northern Spain, Navarre, where the Pyrenean chamois Rupicapra pyrenaica pyrenaica is categorized as Vulnerable, and Aragon, where it is huntable, coordinated management for the recovery of this subspecies at the western limit of its range. After an estimate of only a small population in 1992–1993 hunting was banned in Aragon and, in 1995–1996, monitoring of both populations began. In the two massifs where the subspecies lives, which lie across the border of the two jurisdictions, chamois populations increased from 33 to 136 and from 144 to 455 by 2007 (average annual increases were 15 and 11%, respectively). The subspecies was also located on a third massif, in 2002. After the recovery the ban against hunting was lifted in Aragon, in 2006, with a sustainable hunting quota based on 5% of the estimated minimum population size. We conclude that coordinated management between agencies in two jurisdictions has fostered the recovery of the Pyrenean chamois.

Brown bears (Ursus arctos) in the Cantabrian Mountains of northwestern Spain occur in 2 small, isolated, and endangered populations: the western population (WP) and the smaller eastern population (EP) were studied from 1989 to 2004. We documented the number of unique females with cubs-of-the-year (FCUB), the number of cubs per female, and the area occupied by FCUB. The estimated number of FCUB using the Chao mark–resight estimator was similar to a conservative number of FCUB obtained using protocols to distinguish unique animals (N̂Obs). In the WP, N̂Obs increased during the period, whereas the trend suggested by the index in the EP did not differ from 1.0. The number of cubs per female was slightly higher in the WP (1.8) than in the EP (1.5). The area occupied by FCUB initially decreased followed by a recovery in both populations. Nevertheless, the area occupied as of 1989–92 had not been completely re-colonized by 2001–04. The areas apparently abandoned by FCUB were situated in the middle of th...

In order to understand wild boar's diet during the cold season and its alternatives to mast in a southern European mountain range, 234 wild boar stomachs we collected in autumn and winter during three consecutive hunting seasons. The study was undertaken in several valleys of the southwestern Pyrenees, a third of which was forest. Results indicated that diet mainly consisted of plant matter from the aerial parts of different forest plants. The most important items in terms of abundance and frequency of appearance were beechnuts Fagus sylvatica, acorns from white oak Quercus humilis and holm oak Q. ilex, and bracken Pteridium aquilinum roots. Those items represented 70.7% of the total volume. The alternative to hard mast was roots. The amount of animal matter in the diet was small but consumed frequently and consistently during the three hunting periods. Due to the abundance of forest fruits, alternative natural foods and the mosaic of forest, there was little crop damage in the area.