Water quality of selected effluent-dependent stream reaches in southern Arizona as indicated by concentrations of periphytic chlorophyll a and aquatic-invertebrate communities

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Title Water quality of selected effluent-dependent stream reaches in southern Arizona as indicated by concentrations of periphytic chlorophyll a and aquatic-invertebrate communities
Creator Gebler, Joseph B.
Subject Water quality; Aquatic invertebrates; Chlorophyll -- Analysis
Spatial Coverage Colorado River (Colo.-Mexico); Arizona
Description Concentrations of chlorophyll a and indices computed for aquatic- invertebrate communities in two effluent-dependent stream reaches on the Santa Cruz River and one on the Salt River were compared to those in noneffluent-dependent streams to examine potential differences in water quality. Periphytic chlorophyll a from riffle habitats and aquatic-invertebrate communities from riffle and multiple habitats were used for the comparison. Concentrations of chlorophyll a from effluent-dependent streams were elevated compared with concentrations in noneffluent- dependent streams. Aquatic-invertebrate communities from effluent-dependent streams were characterized by an abundant, yet taxonomically depauperate fauna of tolerant organisms; whereas, noneffluent-dependent streams supported a diverse assemblage of aquatic invertebrates including taxa considered sensitive to water-quality degradation. These results indicate that water quality of the effluent-dependent streams is poor compared with water quality of noneffluent-dependent streams. Patterns of taxonomic composition of aquatic-invertebrate communities and abundances of aquatic invertebrates from effluent- dependent streams are the same as patterns discussed in the scientific literature.
Publisher U. S. Geological Survey
Contributors National Water-Quality Assessment Program, Central Arizona Basins Study Unit
Date 1998
Type Text
Format application/pdf
Digitization Specifications pdf file copied from USGS website (http://az.water.usgs.gov/pubs/98-4199intro.html). Uploaded into CONTENTdm version 3.7.
Identifier http://az.water.usgs.gov/pubs/98-4199intro.html
Source Gebler, Joseph B., Water quality of selected effluent-dependent stream reaches in southern Arizona as indicated by concentrations of periphytic chlorophyll a and aquatic-invertebrate communities, Tucson, Arizona: U. S. Geological Survey Water-Resources Investigation 98-4199, 12 p.
Language eng
Rights Management Public Domain, Courtesy of the USGS
Holding Institution University of Utah
Metadata Cataloger Kristin Willmore
ARK ark:/87278/s66h4gbb
Setname wwdl_er
Date Created 2005-08-19
Date Modified 2005-08-19
ID 1145897
Reference URL https://collections.lib.utah.edu/ark:/87278/s66h4gbb
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