USGS - science for a changing world

Scientific Investigations Report 2006–5101–D

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006–5101–D

Back to Table of Contents

Table 13. Comparison of average benthic invertebrate abundance and richness metrics for high- and low-urban streams, Willamette River basin and surrounding area, Oregon and Washington.

[Abbreviations: UII, urban intensity index; EPEM, Ephemeroptera; PLECO, Plecoptera; EPT, Ephemeroptera, Plecoptera, and Trichoptera. Symbols: >, greater than; <, less than]

Urban intensity
index
Total taxa
richness
EPEM
abundance
PLECO
percent
abundance
EPT percent
richness
EPT
richness
Noninsect
percent
richness
Intolerant
abundance
Tolerant
percent
abundance
UII < = 10 30 3,622 14 43 15 16 3,891 25
UII > = 70 25 511 0 11 3 47 43 73
Difference 5 3,111 14 32 12 -31 3,848 -48

Back to Table of Contents

AccessibilityFOIAPrivacyPolicies and Notices

Take Pride in America logoUSA.gov logoU.S. Department of the Interior | U.S. Geological Survey
URL: https://pubs.usgs.gov/sir/2006/5101-D
Page Contact Information: Publications Team
Page Last Modified: Thursday, 01-Dec-2016 19:24:39 EST