USGS

 

U.S. GEOLOGICAL SURVEY
Data Series 116

A Checklist of the Aquatic Invertebrates of the Delaware River Basin, 1990-2000

By Michael D. Bilger, Karen Riva-Murray, and Gretchen L. Wall

ABSTRACT

This paper details a compilation of aquatic-invertebrate taxa collected at 1,080 sites as part of 13 surface-water-quality studies completed by selected Federal, state, and local environmental agencies during 1990-2000, within the 32,893-km2 area of the Delaware River Basin. This checklist is intended to be a "working list" of aquatic invertebrates that can be applied successfully to the calculation and interpretation of various biological estimators to determine the status of water quality and can be used as a foundation to document the current state of biodiversity. It is not intended as a comprehensive historical inventory of the literature or of private and public holdings. A total of 11 phyla comprising 20 classes, 46 orders, 196 families, 685 genera, and 835 species were recorded.

Table of Contents

Abstract
Introduction
Description of the Basin
Methods
Aquatic Invertebrates of the Delaware River Basin
Acknowledgments
References Cited

Figures

1. Map showing ecoregions and locations and types of sampling sites within the Delaware River Basin

Tables

1. Agencies and programs from which benthic-invertebrate data were obtained for checklist of taxa in the Delaware River Basin
2. Checklist of the aquatic invertebrates of the Delaware River Basin, 1990-2000


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District Chief
U.S. Geological Survey
Water Resources Discipline
215 Limekiln Road
New Cumberland, Pennsylvania 17070
Telephone: (717) 730-6960
Fax: (717) 730-6997
or access the USGS Water Resources of Pennsylvania home page at:
http://pa.water.usgs.gov/.


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