PT19 Unique Demands of Endangered Species Evaluations
Exhibit Hall
8:00 AM - Tuesday

(PT280) Application of Pesticide Assessments for Wide-ranging Species.

Turner, L1, 1 Compliance Services International

ABSTRACT- The Endangered Species Act and the implementing Section 7 consultation regulations for Federal agencies are designed almost entirely to address local impacts on threatened and endangered (T&E) species. Yet pesticide registration actions are typically national actions where a registered pesticide may be used on a specific crop or other site anywhere in the country. This creates difficulties that must be addressed in the context of risk assessments. One major consideration is that some species may occur in widespread geographic areas, often in different ecological settings and usually with differences in potential threats to the species. The various Evolutionarily Significant Units (ESUs) of T&E salmon and steelhead, for example, may occur along the entire Pacific coast from Canada to southern California and this range may include such diverse areas as hot deserts, temperate rain forests, large rivers, small streams, etc. Human populations in these areas may range from rather low density to very concentrated; and factors threatening these ESUs, including pesticide use, may be quite different. Ideally, the local assessment approach would be applied everywhere, but practical considerations dictate that a different strategy needs to be used to provide timely assessments, and thus timely protection, to such wide-ranging species. Thus, a different approach has been used in analyzing the risks for such species than the more frequently encountered small or localized populations of T&E species. Some of the more important factors in such risk assessments will be presented and discussed.

Key words: endangered species, pesticide risk

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