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By Dr. Norman Johns, National Wildlife Federation, Austin, Texas
The brackish water clam Atlantic Rangia cuneata (Rangia cuneata), is an important native species in the upper portion of most Texas estuaries. Rangia cuneata clams are of ecological significance because of their role as a filter feeder, converting detritus and phytoplankton into biomass and serving as an important food source for fish, crustaceans, and water fowl.
The study utilizes a novel approach to characterize salinity patterns, focusing on those which may limit Rangia cuneata distribution in Texas estuaries. This new approach to describe salinity patterns integrates salinity magnitude (e.g. 2-10 parts per thousand), duration of occurence (e.g. 30 days or longer), and periodicity of re-occurrence (e.g. re-occurring at least once per five years).Download PDF
This report recommends seven common-sense water conservation measures. It reviews 19 cities around the state to see where these measures are in place and concludes that, with some exceptions, most of the cities surveyed are not doing enough to make the most efficient use of existing water supplies.Download PDF
This report is the first in a series designed to explore aspects of the energy‐water nexus in Texas. It examines the water requirements for various types of electricity generating facilities, both for typical systems nationwide and here in Texas. It also addresses the use of energy by water supply and wastewater treatment systems, comparing national averages with Texas‐specific values.Download PDF
Springs have played a major cultural, historical, ecological, and spiritual role in shaping Texas. Springs in the state are as varied and unique as the landscape, and are an important resource for all Texans. Many springs have disappeared and the quality, integrity, and existence of many more are threatened. The intent of this guide is to increase awareness of the importance of springs and to assist spring owners in taking steps to care for their springs.Download PDF
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