The proportion of study sites with Pseudacris crucifer present per year, and the median relative frequency of sites with P. crucifer present across all years, for each study area.
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资源简介：
Sites in the St. Croix National Scenic Riverway where P. crucifer was not present in a given year also contained little or no surface water that year during the typical breeding interval for P. crucifer.
创建时间：
2018-09-07
