An Inventory of Aquatic Macroinvertebrates and Calculation
of Selected Biotic Indices for the U.S. Army Atterbury Reserve Forces Training
Area near Edinburgh, Indiana, September 2000-August 2002
By Bret A. Robinson
Prepared in cooperation with the Indiana Army National Guard
U.S. Geological Survey
Scientific Investigations Report 2004-5010
This report is available as a pdf.
ABSTRACT
An investigation was conducted to
establish an inventory of aquatic macroinvertebrates in the streams at the U.S.
Army Atterbury Reserve Forces Training Area near Edinburgh, Indiana. The data
used to develop this inventory were collected during two sampling efforts in
September 2000 and July and August 2002. The inventory identified 173 distinct
taxa within the study-area streams. Although no rare or endangered species were
found, one identified species, Cordulegaster maculata Selys (a
twin-spotted spiketail dragonfly), is recognized by the Indiana Department of
Natural Resources as being rare enough to warrant special concern. Biotic
indices (indicators of water-quality conditions) were calculated from the
macroinvertebrate data. Ephemeroptera, Plecoptera, Trichoptera Richness Index
values calculated for 23 samples collected from 16 sites ranged from 5 to 15,
with more than 75 percent of the values falling within the range of 7 to 11.
Hilsenhoff Biotic Index scores and Invertebrate Community Index scores
calculated for samples collected at three sites indicate that water quality at
these sites ranged from good to poor. The one site with a poor water-quality
index score had a small drainage area. The small drainage area and dry
conditions during the sampling period may have contributed to the poor scores
calculated for this site.
Contents
Abstract
Introduction
Purpose and Scope
Description of Study Area
Study Methods
Inventory of Aquatic Macroinvertebrates
Calculation of Selected Biotic Indices
Ephemeroptera, Plecoptera, Trichoptera Richness Index
Hilsenhoff Biotic Index
Invertebrate Community Index
Summary
Acknowledgments
References Cited
Figures
1.-2. Maps showing:
- Study area and surrounding region at the U.S. Army Atterbury Reserve Forces
Training Area near Edinburgh, Indiana
- Sampling sites for collection of macroinvertebrates, September 2000-August
2002
- Photographs of modified Hester-Dendy samplers used to collect artificial-substrate
samples
Tables
- Macroinvertebrate sampling sites and sample types collected by the U.S.
Geological Survey at the U.S. Army Atterbury Reserve Forces Training Area
near Edinburgh, Indiana, September 2000 and July and August 2002
- Inventory of aquatic macroinvertebrates in the streams at the U.S. Army
Atterbury Reserve Forces Training Area, September 2000-August 2002
- Ephemeroptera, Plecoptera, Trichoptera Richness Index values, listed by
sample type and year for samples collected, September 2000-August 2002
- Hilsenhoff Biotic Index score ranges and water-quality-evaluation ratings
- Hilsenhoff Biotic Index scores, water-quality-evaluation ratings, and drainage
area for three sites where artificial-substrate samples were collected in
2002
- Metric values and Invertebrate Community Index scores calculated from macroinvertebrate
data collected in 2002
Appendixes
[In pocket]
A. Macroinvertebrate data, 2000
B. Macroinvertebrate data, 2002
C. Macroinvertebrate inventory
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