Torres P C, Prado P I
Instituto de Biologia, Universidade Estadual de Campinas, SP, Brazil.
Braz J Biol. 2010 Nov;70(4):987-94. doi: 10.1590/s1519-69842010000500010.
This study aimed at estimating the population size and attitudes of residents towards caring for domestic dogs, through questionnaire surveys, as well as the frequency of these animals in different habitats (anthropic and forest patch), using scent stations. The study was conducted in a severely fragmented area of the Brazilian Atlantic Forest. A large number of unrestricted dogs was recorded, averaging 6.2 ind/km². These dogs have owners and are regularly fed. Dog records decreased from the anthropogenic matrix to the forest patch edge, which suggests that dogs act as an edge effect on forest patches. Encounters between domestic dog and wild animals can still be frequent in severely fragmented landscapes, mainly at the forest edges. However the fact that most dogs have an owner and are more frequent in the anthropic habitat suggests that their putative effects are less severe than expected for a carnivore of such abundance, but the reinforcement of responsible ownership is needed to further ameliorate such effects.
本研究旨在通过问卷调查估计居民对家养犬照料的人口规模和态度，并利用气味站确定这些动物在不同栖息地（人为环境和森林斑块）中的出现频率。该研究在巴西大西洋森林的一个严重破碎化地区进行。记录到大量无主犬，平均密度为6.2只/平方公里。这些犬有主人且定期喂食。犬的记录从人为基质向森林斑块边缘减少，这表明犬对森林斑块起到边缘效应。在严重破碎化的景观中，家养犬与野生动物之间的相遇仍可能频繁发生，主要在森林边缘。然而，大多数犬有主人且在人为栖息地更为常见这一事实表明，它们假定的影响并不比如此数量的食肉动物预期的严重，但需要加强负责任的养犬行为以进一步减轻此类影响。
