학술논문
Densities and Habitat of Tailed Frog Tadpoles in Small Streams near Mt. St. Helens Following the 1980 Eruption
Document Type
research-article
Source
Journal of the North American Benthological Society, 1988 Sep 01. 7(3), 246-252.
Subject
Language
English
ISSN
08873593
1937237X
1937237X
Abstract
Streams near Mt. St. Helens, Washington, differ in degree of watershed disturbance caused by the 1980 eruption. Summer densities of tailed frog tadpoles (Ascaphus truei) varied considerably both within and between several of these streams. Differences in density among streams were most clearly associated with differences in extent of forest in the basin. Streams in basins with little forest had maximum temperatures near 20°C and few Ascaphus. In completely or partially forested basins, maximum stream temperatures were