Implementing Herpetofaunal Inventory and Monitoring Efforts on Corps of Engineers Project Lands
ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
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Herpetofaunal species include reptiles and amphibians such as snakes, lizards, turtles, alligators, frogs, and salamanders. These animals are recognized for their valuable contributions to the nations natural diversity and their important role in ecological systems. The Corps of Engineers is engaged in increasing efforts to inventory and monitor these animals on project lands because of their sensitivity to human land-use disturbances and contaminants and for legal and regulatory compliance. This technical report provides an overview of standard methods to inventory and monitor these organisms, and summarizes the number and distribution of federalstate listed threatened and endangered reptiles and amphibians documented within seven Corps Divisions and associated Districts. An introduction to setting goals and objectives is provided, followed by brief descriptions of the primary techniques for attaining Level II inventories on Corps of Engineer project lands, or other areas under Corps jurisdiction. The techniques focus on terrestrial and aquatic reptiles and amphibians and include 1 Time-Area-constrained Searches, 2 Road Surveys, 3 Coverboard Arrays, 4 Pitfall traps and Terrestrial Drift Fences, 5 Seining, Dipnetting, and Sweep Samples, 6 Auditory Surveys, and 7 Basking Surveys and Traps. Finally, methods to inventory other notable species, including sea turtles, alligators, and crocodiles are summarized.