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Monitoring Plant and Animal Populations by Caryl L. Elzinga;Daniel W. Salzer;John W. Willoughby;James

By Caryl L. Elzinga;Daniel W. Salzer;John W. Willoughby;James P. Gibbs

Very beneficial replace. bankruptcy on writing stable administration goals rather instructive. circulate diagrams are nice besides.

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Taxonomic distinctness. A species that is the only representative in its family would rank above one that is the only representative in its genus, which would rank above a species that occurs in a genus with many species. The concept behind this ranking is that the taxonomic distinctness of a single-species family correlates with high genetic uniqueness. A subspecies or variety would for the same reasons be considered of less value. A drawback to this approach is that most current taxonomic divisions are still largely based on morphological differences and may not directly relate to evolutionary distinctness.

Either strategy is legitimate, and both have been applied in conservation, but you need to think about your conservation philosophyexplicitly. • Population size. Investing in larger populations may be a better conservation strategy than salvaging small populations. Larger populations are better able to withstand annual variability, and they provide a larger buffer for decline. Conversely, it may be more important in some situations to monitor small populations because they are more prone to extinction and to assume that the larger ones are at less risk.

Continuing monitoring. reporting and using results are illustrated. IMPLEMENT MONITORING (SEE FIG. 5) Collect Field Data Complete data collection at specified intervals. Ensure that data sheets are completely filled out, duplicated, and stored in a safe place. Analyze Data after Each Measurement Cycle Complete data analysis soon after data collection. Data should not be stored over several years before analysis for a final report. Timely analysis identifies problems early, reduces the work associated with the final report, and ensures that questions requiring additional field visits can be addressed.

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