Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.5281/zenodo.6784730
Titel (primär) Population collapse of Rana temporaria in a high altitude environment? An occupancy study
Autor Chiacchio, M.; Grimm-Seyfarth, A.; Henle, K.
Journal / Serie Il Naturalista siciliano
Erscheinungsjahr 2022
Department NSF
Band/Volume S. 4, 46
Heft 1
Seite von 77
Seite bis 84
Sprache englisch
Topic T5 Future Landscapes
Keywords Alps; Amphibian conservation; habitat change; mountain biodiversity
Abstract Alpine areas represent one of the richest biodiversity hotspots of Europe. They are threatened by the combining effect of climate change and land-use modifications. In this study, we used visual encounter surveys along transects to investigate occupancy and detection probability of Rana temporaria in Paneveggio-Pale di San Martino Nature Park, Trentino (IT). Multi-season occupancy models revealed that the species occurrence depended on environmental characteristics, namely distance from water and ground vegetation height, while extinction/colonization rates were determined by a combination of weather and microhabitat conditions. Moreover, occupancy and detectability values abruptly collapsed over the study period, indicating a possible population decline issue. Since no main landscape modifications or pathogens have been observed, we hypothesized that the main cause of this decline could be due to the climate. In particular, the reduction affected the juvenile subfraction of the population and we argue that, even if these drops could be considered as stochastic fluctuations, they pose a serious threat to the viability of the population.
dauerhafte UFZ-Verlinkung
Chiacchio, M., Grimm-Seyfarth, A., Henle, K. (2022):
Population collapse of Rana temporaria in a high altitude environment? An occupancy study
Nat. sicil. S. 4, 46 (1), 77 - 84