Site access and sample frame issues R-EMAP Central Valley, California, stream assessment

被引：5

作者：

Hall, RK ^{[1
]}

Husby, P ^{[1
]}

Wolinsky, G ^{[1
]}

Hansen, O ^{[1
]}

Mares, M ^{[1
]}

机构：

[1] US EPA, Region 9, San Francisco, CA 94105 USA

来源：

ENVIRONMENTAL MONITORING AND ASSESSMENT | 1998年 / 51卷 / 1-2期

关键词：

Sample Site; Environmental Management; Lower Portion; Biological Resource; Site Access;

D O I：

10.1023/A:1005920227534

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The Central Valley of California contains critical habitat for many aquatic and terrestrial biological resources. The purpose of this R-EMAP project was to assess the effects from a highly modified agriculturally dominated landuse area on the aquatic resources of the lower portion of the Central Valley watersheds. The study area is 24,346 mi(2) and comprises the Sacramento Valley and San Joaquin Valley watersheds to the 1,000 ft. elevation contour. Populations of interest are man-made conveyances and wadeable natural streams. There are 40,756 miles of streams and constructed conveyances within the Central Valley as designated by RF3 database. Sample sites were selected to represent 14,399 miles of streams and sloughs, and 16,697 miles of constructed conveyances.

引用

页码：357 / 367

页数：11