Allotopic Distribution of Native Frogs and Introduced Fishes in High Sierra Nevada Lakes of California: Implication of the Negative Effect of Fish Introductions
Bradford DF. 1989. Allotopic Distribution of Native Frogs and Introduced Fishes in High Sierra Nevada Lakes of California: Implication of the Negative Effect of Fish Introductions. Copeia. 1989(3):775-778
In high elevation (>2500 m) lakes in the Sierra Nevada of California, the distributions of a native ranid frog (Rana muscosa) and introduced trout (Salmo spp.) and charr (Salvelinus spp.) appear to be allotopic, i.e., populations of frogs and fish appear not to co-occur in the same lake. Although quantification of this relationship is poor, the pattern is substantiated by the occurrence of conspicuously large numbers of R. muscosa in some lakes that lack fish. Prior to the stocking of high Sierra Nevada lakes with salmonid fishes, which began over a century ago, fish were entirely absent from most of this region. Today, hundreds of high Sierra Nevada lakes are populated with trout and charr.
- Type
- Journal Article
- Authors
- Bradford, D
- Units
- YOSE
- Keywords
- Alpine Zone, Animal Studies, Distribution, Exotic Species, Fish, Frogs & Toads (Salientia), Impacts, Lakes & Ponds, Native Species, Sierra Nevada CA