SGER: Initial Response of Stream Biota to Catastrophic Flooding; Interaction Between Flood Magnitude, Watershed Physiography and Landscape Alteration

霍金斯，这项拟议的研究将量化水蒸气生物群对加利福尼亚州几个山区溪流灾难性洪水的初步反应。我们的主要假设是，洪水对生物群的影响大小既受流域对洪水敏感性的自然差异的影响，也受每个流域内发生的土地使用量的影响。为了验证这一假设，将对多达45个流域的溪流进行重新采样，这些流域以前在1988年和1989年干旱年采样，并比较洪水前后的丰度和每个流域的物种出现情况。

Hawkins the proposed research will quantify the initial response of steam biota to catastrophic flooding in several mountainous streams of California. Our primary hypothesis is that the magnitude of effect that flooding has on biota is influenced by both naturally occurring differences among watersheds in their sensitivity to flooding and the amount of land use that has occurred within each watershed. To test this hypothesis, will resample streams in up to 45 watersheds that were previously sampled during the drought years of 1988 and 1989 and compare pre- and post-flood abundances and species occurrence in each watershed.