Katie Lyons, Ecology, Evolution, and Behavior Program

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Presentation transcript:

Katie Lyons, Ecology, Evolution, and Behavior Program Sufficiency of publicly-available spatial data to monitor Central Texas groundwater salamanders (Eurycea) Katie Lyons, Ecology, Evolution, and Behavior Program

Eurycea Central and West-Central TX Subterranean (aquifer-dwelling) Some endangered Fully aquatic Connections underground? E. sosorum, Barton Springs salamander E. tridentifera, Comal Blind salamander

Texas Aquifers 9 major, 22 minor Supply 62% of water as of 2014 Susceptible to contamination, especially in recharge zone

Project Overview Evaluate publicly-available GIS data Is it sufficient for monitoring the Eurycea complex? Cross-reference occurrence data to other geographic and hydrological features E. troglodytes

Eurycea Occurrence Data

Eurycea Watersheds

Eurycea Streams

Stream Distance Low resolution? Well samples?

Eurycea Aquifers

Eurycea Aquifers

Eurycea Aquifers – USGS Wells

Distance from Occurrence to Well

Distance from Occurrence to Well

Well Depth Nearest to occurrence sites: All wells:

Future Directions Obtain more well data Explore groundwater flow modeling Differentiate occurrence types Incorporate my own data