A concentric analysis of the impact of urbanization on the threatened European tree frog in an agricultural landscape


Autoria(s): Pellet J.; Guisan A.; Perrin N.
Data(s)

2004

Resumo

Pond-breeding amphibians are affected by site-specific factors and regional and landscape-scale patterns of land use. Recent anthropogenic landscape modifications (drainage, agriculture intensification, larger road networks, and increased traffic) affect species by reducing the suitable habitat area and fragmenting remaining populations. Using a robust concentric approach based on permutation tests, we evaluated the impact of recent landscape changes on the presence of the endangered European tree frog (Hyla arborea.) in wetlands. We analyzed the frequency of 1 traffic and 14 land-use indices at 20 circular ranges (from 100-m up to 2-km radii) around 76 ponds identified in western Switzerland. Urban areas and road surfaces had a strong adverse effect on tree frog presence even at relatively great distances (from 100 m up to 1 km). When traffic measurements were considered instead of road surfaces, the effect increased, suggesting a negative impact due to a vehicle-induced effect. Altogether, our results indicate that urbanization and traffic must be taken into account when pond creation is an option in conservation management plans, as is the case for the European tree frog in western Switzerland. We conclude that our easy-to-use and robust concentric method of analysis can successfully assist managers in identifying potential sites for pond creation, where probability of the presence of tree frogs is maximized.

Identificador

http://serval.unil.ch/?id=serval:BIB_0F40D8979BAC

isbn:0888-8892

isiid:000225737300023

doi:10.1111/j.1523-1739.2004.0421a.x

http://my.unil.ch/serval/document/BIB_0F40D8979BAC.pdf

http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_0F40D8979BAC3

Idioma(s)

en

Direitos

info:eu-repo/semantics/openAccess

Fonte

Conservation Biology, vol. 18, no. 6, pp. 1599-1606

Palavras-Chave #amphibian conservation; calling males; circular buffers; Hyla arborea; traffic density; urban areas
Tipo

info:eu-repo/semantics/article

article