Alkalinity, Discharge, Average Velocity, and Invertebrate Drift Concentration in Subarctic Alaskan Streams
作者:
JacquelineDoyle LaPerriere,
期刊:
Journal of Freshwater Ecology
(Taylor Available online 1983)
卷期:
Volume 2,
issue 2
页码: 141-151
ISSN:0270-5060
年代: 1983
DOI:10.1080/02705060.1983.9664586
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
This study measured the associations of alkalinity, current and invertebrate drift among 13 streams in subarctic Alaska. A significant positive correlation was found between alkalinity and drift concentration expressed as numbers per unit volume. Significant inverse relations were found between stream discharge and drift concentration expressed as either numbers or weight. This “dilution” was to be expected since stream wetted perimeter, the source of invertebrates to drift, increases as approximately the square root of the discharge. Multiple regression analysis also showed a positive relation between stream average velocity and drift concentrations. Invertebrate drift was seen, therefore, to be somewhat analogous to sediment transport in streams.
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