Fragmentation effects on population density of three rodent species in secondary Atlantic Rainforest, Brazil
2008 (English)In: Studies on Neotropical Fauna and Environment, ISSN 0165-0521, Vol. 43, no 1, 11-18 p.Article in journal (Refereed) Published
We investigated the population density of the two common rodent species Akodon montensis, Oligoryzomys nigripes, and the more specialized endemic Delomys sublineatus in secondary forest fragments of the highly endangered coastal Atlantic Rainforest. Linear regression was used to examine relationships between population density and four landscape variables. We tested the hypothesis that rare species, which are more affected by fragmentation than the common species, should decrease in population density with decreasing fragment size while the density of common generalist species should be unaffected or increase in smaller fragments. The results revealed that A. montensis and O. nigripes showed no significant association to any landscape variable. The density of D. sublineatus showed a strong tendency to a positive correlation to fragment size as well as a negative correlation to edge density. The results underline the importance of large and connected forest remnants in the Atlantic Rainforest to guarantee an effective protection of endemic small mammal species.
Place, publisher, year, edition, pages
2008. Vol. 43, no 1, 11-18 p.
IdentifiersURN: urn:nbn:se:uu:diva-215496DOI: 10.1080/01650520701553651ISI: 000253454900002OAI: oai:DiVA.org:uu-215496DiVA: diva2:687471