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 |
ARK |
ark:/87278/s66h4gbb |
Setname |
wwdl_er |
ID |
1145897 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s66h4gbb |