TY - JOUR
T1 - AQUATIC INVERTEBRATE BIODIVERSITY IN SPRING-FED HABITATS OF THE RIO SONOYTA BASIN
T2 - VARIATION AMONG HABITAT TYPES AND SEASONS
AU - Hollien, Kelsey D.
AU - Bogan, Michael T.
N1 - Funding Information: We thank W. Dijak, United States Forest Service, and W. Simper, Travis County Natural Resources, for assisting with geographic information system analyses; P. Bullard, J. Edward-son, N. Flood, M. Frye, G. Geier, J. Halka, S. Stollery, and C. Weyenberg for assistance with data collection; and L. O’Donnell, City of Austin, for facilitating this study; BCP partners for access to study areas; and previous reviewers for providing comments to improve this manuscript. Funding for this research was provided by the City of Austin and the United States Department of Agriculture Forest Service, Northern Research Station. Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the United States Government. Publisher Copyright: © 2022 Southwestern Association of Naturalists. All rights reserved.
PY - 2022/4/27
Y1 - 2022/4/27
N2 - Abstract Springs are essential sources of water for humans and wildlife in the Sonoran Desert and, despite their isolation, they often support diverse aquatic communities. However, flows in these systems are declining due to groundwater pumping and increasing temperatures and aridity. In the western Sonoran Desert, two spring-fed systems represent the vast majority of perennial surface water along the U.S.-Mexico border: Quitobaquito, an upland hillslope spring, and a nearby spring-fed reach of the Rio Sonoyta. In this study, we quantified how aquatic invertebrate species richness and community composition varied by habitat type and season at these two sites. We found that habitat was a significant driver of composition for both sites, but seasonal variation was only influential for species richness in the Rio Sonoyta. Continued declines in flow will likely lead to significant losses of aquatic invertebrate biodiversity at both sites.
AB - Abstract Springs are essential sources of water for humans and wildlife in the Sonoran Desert and, despite their isolation, they often support diverse aquatic communities. However, flows in these systems are declining due to groundwater pumping and increasing temperatures and aridity. In the western Sonoran Desert, two spring-fed systems represent the vast majority of perennial surface water along the U.S.-Mexico border: Quitobaquito, an upland hillslope spring, and a nearby spring-fed reach of the Rio Sonoyta. In this study, we quantified how aquatic invertebrate species richness and community composition varied by habitat type and season at these two sites. We found that habitat was a significant driver of composition for both sites, but seasonal variation was only influential for species richness in the Rio Sonoyta. Continued declines in flow will likely lead to significant losses of aquatic invertebrate biodiversity at both sites.
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U2 - 10.1894/0038-4909-66.1.54
DO - 10.1894/0038-4909-66.1.54
M3 - Article
SN - 0038-4909
VL - 66
SP - 54
EP - 66
JO - Southwestern Naturalist
JF - Southwestern Naturalist
IS - 1
ER -