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Surveys of Calling Amphibians in North Dakota

Conclusions and Recommendations

Amphibians have received increased attention in recent years from the scientific community and general public alike. Much of that interest stems from a regard about the status of certain populations, based both on a concern about the amphibians themselves and on what they may be telling us as barometers of the environment humans share with them. To understand better what indeed is happening to their populations, reliable and extensive monitoring is required. Some monitoring programs are in place, while others are under development. To monitor anurans successfully, it is necessary to have a solid understanding of their biology, particularly the features that influence their vocalizations and therefore their detectability. Calling varies not only by species, but by time of year, time of day, and environmental conditions. These variables may have different effects in different geographic areas, so they need to be evaluated in various locations. A limited understanding of these variables and their influences can markedly reduce the value and reliability of monitoring programs critically depends on any monitoring program.
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