Environmental Flows Information System
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Browsing Environmental Flows Information System by Subject "freshwater"
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Item An Annotated Checklist of the Freshwater Fishes of Texas, with Keys to Identification of Species, 2nd Edition(Texas Academy of Science, 2009-06-26T17:57:24Z) Hubbs, Clark; Edwards, Robert J.; Garrett, Gary P.Forty-nine families and 268 species of fishes are known to inhabit the freshwaters of Texas. We report on the distribution and status of these fishes and provide a key to their identification. Of the native fishes originally found in Texas, five taxa, Cyprinella lutrensis blairi (Maravillas red shiner), Notropis orca (phantom shiner), N. simus simus (Rio Grande bluntnose shiner), Gambusia amistadensis (Amistad gambusia) and G. georgei (San Marcos gambusia) are apparently extinct, and four, Hybognathus amarus (Rio Grande silvery minnow), Notropis simus pecosensis (Pecos bluntnose shiner), Oncorhynchus clarki virginalis (Rio Grande cutthroat trout) and Gambusia senilis (blotched gambusia) appear to be extirpated from the state. Over 40 percent of the remaining primary freshwater species are of conservation concern and in some need of protection.Item Distributional Survey and Habitat Utilization of Freshwater Mussels(Texas Water Development Board, 2009-11-24T17:06:02Z) Karatayev, Alexander; Burlakova, LyubovItem East Texas Mussel Survey(2009-11-25T23:08:59Z) Karatayev, Alexander; Burlakova, LyubovField surveys of freshwater mussels (family Unionidae) were conducted at 49 sites in 22 waterbodies (4 rivers, 7 reservoirs, and 11 streams) within the Red, Trinity, Neches, and Sabine drainage basins using standard qualitative and quantitative methods. Depth, dominant substrates, GPS coordinates, and water chemistry were recorded at each site. Abundant and diverse mussel beds were located in the Sulphur, Angelina, and Neches rivers. These sites can be used for future monitoring. Several waterbodies were surveyed for the first time (i.e. Cooper Reservoir, Wright Patman Reservoir, Houston County Reservoir, Striker Reservoir, and lower Sabine River tributaries). Extreme rainfall and flooding in 2007 prevented successful sampling of several sites. Mussel populations in a number of waterbodies (i.e. Sulphur River, Cooper Reservoir, Houston County Reservoir, B.A. Steinhagen Reservoir, Toledo Bend Reservoir) were severely damaged during previous droughts or drawdowns. Several sites with abundant and diverse unionid assemblages were suggested for monitoring, conservation, and recovery plans. This survey will provide data necessary for successful management and conservation of unionids in East Texas rivers and reservoirs.