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Analysis of three amphibian populations with quarter-century long time-series.


Meyer, A H; Schmidt, B R; Grossenbacher, K (1998). Analysis of three amphibian populations with quarter-century long time-series. Proceedings of the Royal Society B: Biological Sciences, 265(1395):523-528.

Abstract

Amphibians are in decline in many parts of the world. Long time-series of amphibian populations are necessary to distinguish declines from the often strong £uctuations observed in natural populations. Time-series may also help to understand the causes of these declines.We analysed 23-28-year long time-series of the frog Rana temporaria. Only one of the three studied populations showed a negative trend which was probably caused by the introduction of ¢sh. Two populations appeared to be density regulated. Rainfall
had no obvious e¡ect on the population fluctuations. Whereas long-term studies of amphibian populations are valuable to document population declines, most are too short to reveal those factors that govern population dynamics or cause amphibian populations to decline.

Abstract

Amphibians are in decline in many parts of the world. Long time-series of amphibian populations are necessary to distinguish declines from the often strong £uctuations observed in natural populations. Time-series may also help to understand the causes of these declines.We analysed 23-28-year long time-series of the frog Rana temporaria. Only one of the three studied populations showed a negative trend which was probably caused by the introduction of ¢sh. Two populations appeared to be density regulated. Rainfall
had no obvious e¡ect on the population fluctuations. Whereas long-term studies of amphibian populations are valuable to document population declines, most are too short to reveal those factors that govern population dynamics or cause amphibian populations to decline.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Evolutionary Biology and Environmental Studies
Dewey Decimal Classification:570 Life sciences; biology
590 Animals (Zoology)
Language:English
Date:1998
Deposited On:11 Feb 2008 12:14
Last Modified:05 Apr 2016 12:13
Publisher:Royal Society of London
ISSN:0962-8452
Free access at:PubMed ID. An embargo period may apply.
Publisher DOI:https://doi.org/10.1098/rspb.1998.032
Related URLs:http://www.jstor.org/stable/50824
PubMed ID:9606133

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