An update to DR-07-07 BSS&ABS salamander data report 2006 and SR-04-06 Some water quality threats to the BBS at low flows
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An evaluation of salamander counts, spring flowrates, and dissolved oxygen concentrations was completed to update previously collected data. Originally, this evaluation was used to recommend a pumping limit for sustainable yield to the Barton Springs Edwards Aquifer Conservation District. The primary purpose of the current evaluation was to verify correlations between flow, dissolved oxygen, and surface count data of the endangered Barton Springs Salamander. Significant correlations provide the statistical basis for setting thresholds for Barton Springs flows related to a water quality parameter commonly used in aquatic life support. The pattern previously observed in Barton Springs Pool, with salamander counts increasing during extended periods of declining flow and then decreasing at very low flows, was confirmed. The relationships among the combined Barton Springs discharge and DO in Barton, Eliza and Old Mill) were also confirmed with the addition of three more years of data that include values in the low range. Correlations were also found with DO and surface counts. The peak correlation between counts and DO was found for a lag of 6 months. Open Access See Extended description for more information.
Barton Springs (Austin, Texas, United States), Biology, Cave Ecology, Resource Management
City of Austin Watershed Protection and Development Review Department
Turner, Martha, "Barton Springs salamanders, spring discharge and dissolved oxygen An update to DR-07-07 BSS&ABS salamander data report 2006 and SR-04-06 Some water quality threats to the BBS at low flows" (2009). KIP Data Sets and Technical Reports. 12.