caa a22 4500 445892943 CHVBK 20180317145622.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s10750-010-0550-y doi (NATIONALLICENCE)springer-10.1007/s10750-010-0550-y Nelson S. Technical Service Center, Bureau of Reclamation, Denver Federal Center, Bldg. 56, Rm. 2010, P.O. Box 25007 (86-68220), 80225, Denver, CO, USA aut Response of stream macroinvertebrate assemblages to erosion control structures in a wastewater dominated urban stream in the southwestern U.S [Elektronische Daten] [S. Nelson] Effects of stream erosion control structures on aquatic macroinvertebrates were studied (2000-2009) in a wastewater dominated drainage (Wash) in Las Vegas, Nevada. Mainstem sites with and without structures, wastewater treatment plant outfalls, a reference site above treatment plant inputs, and tributary sites were sampled. Ordination suggested hydrology and channel characteristics (current velocity, stream depth, and width), and water quality (conductivity) were primary factors in organizing macroinvertebrate communities, with some variables altered at structures. Treatment plant inputs changed hydrology (increased flows), water chemistry (conductivity decreased below treatment plants), and temperature. Assemblages differed between site types, with midges and damselflies important at tributary sites and Fallceon mayflies and Smicridea caddisflies common at erosion control structures. Locally unique communities developed at structures which also may have facilitated exotic species invasions. Analyses showed that taxa richness increased over time at these sites and differed significantly from richness at sites without structures. Structures appeared important in retaining organic matter and, among mainstem sites, coarse particulate organic matter was highest, but variable, at structures and at wetlands above the structures. Erosion control structures, coupled with warm effluent, high baseflows, and altered water quality resulted in development of a macroinvertebrate community that did not trend towards reference or tributary sites. In this case, ecological communities at structures used for river restoration were not on a continuum between disturbed and reference sites. Goal setting of community responses at these structures would have required insight beyond the simple use of reference site attributes. US Government, Department of the Interior, Bureau of Reclamation, 2010 Erosion control structures nationallicence Las Vegas Wash nationallicence Macroinvertebrates nationallicence Stream restoration nationallicence Thiaridae nationallicence Urban nationallicence Hydrobiologia Springer Netherlands 663/1(2011-03-01), 51-69 0018-8158 663:1<51 2011 663 10750 https://doi.org/10.1007/s10750-010-0550-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-010-0550-y text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Nelson S. Technical Service Center, Bureau of Reclamation, Denver Federal Center, Bldg. 56, Rm. 2010, P.O. Box 25007 (86-68220), 80225, Denver, CO, USA aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 663/1(2011-03-01), 51-69 0018-8158 663:1<51 2011 663 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer