MONITORING BUTTERFLY POPULATIONS USING THE 4TH OF JULY BUTTERFLY COUNT

被引：45

作者：

SWENGEL, AB

机构：

[1] 909 Birch St., Baraboo

来源：

AMERICAN MIDLAND NATURALIST | 1990年 / 124卷 / 02期

关键词：

D O I：

10.2307/2426190

中图分类号：

X176 [生物多样性保护];

学科分类号：

090705 ;

摘要：

The Xerces Society's Fourth of July Butterfly Count (4J), is a nationwide, volunteer, annual 1-day census of butterflies and skippers at selected sites. Two prototype studies using 4J data are offered: a nationwide analysis of monarch data 1979-1988 and an analysis restricted to the Midwest 1986-1989 on the fluctuations of immigrant species. -from Author

引用

页码：395 / 406

页数：12

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