29.03.2013 Views

A. Status of the Spectacled Eider - U.S. Fish and Wildlife Service

A. Status of the Spectacled Eider - U.S. Fish and Wildlife Service

A. Status of the Spectacled Eider - U.S. Fish and Wildlife Service

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

The final aspect <strong>of</strong><strong>Spectacled</strong> <strong>Eider</strong> recovery will involve <strong>the</strong> formulation <strong>and</strong> testing <strong>of</strong><br />

specific hypo<strong>the</strong>ses about <strong>the</strong> cause(s) <strong>of</strong> <strong>the</strong> eiders’ decline <strong>and</strong> <strong>the</strong> importance <strong>of</strong> specific<br />

obstacles to recovery. To date, several hypo<strong>the</strong>ses have been suggested to account for <strong>the</strong><br />

decline <strong>of</strong> this species, <strong>and</strong> <strong>the</strong> <strong>Service</strong>’s prioritization <strong>of</strong> <strong>the</strong>se preliminary hypo<strong>the</strong>ses has<br />

guided much <strong>of</strong> <strong>the</strong> ongoing exploratory data collection. At present, however, data are<br />

inadequate for rigorously developing <strong>and</strong> quantitatively testing most <strong>of</strong> <strong>the</strong>m. In addition, <strong>the</strong><br />

relatively few data pertaining to <strong>the</strong>se hypo<strong>the</strong>ses have yet to be comprehensively summarized<br />

<strong>and</strong> evaluated.<br />

To make substantial progress toward recovery, it is imperative that all research be designed<br />

<strong>and</strong> implemented within a hypo<strong>the</strong>sis-testing framework. The current lack <strong>of</strong>data, however,<br />

should not be construed as an excuse for unfocused data collection during <strong>the</strong> exploratory<br />

phase, nor should all hypo<strong>the</strong>sis refinement be postponed until <strong>the</strong> end <strong>of</strong>exploratory<br />

investigation. As data become available incrementally, <strong>the</strong> hypo<strong>the</strong>ses should be increasingly<br />

fine-tuned. Whenever possible, <strong>the</strong> <strong>Service</strong> should evaluate hypo<strong>the</strong>ses on <strong>the</strong> basis <strong>of</strong> existing<br />

data <strong>and</strong> summarize <strong>the</strong>se evaluations in <strong>the</strong> form <strong>of</strong> <strong>of</strong>ficial position papers. These summaries<br />

will be essential for prioritizing work plans to ensure that scarce dollars <strong>and</strong> human resources<br />

are consistently applied to <strong>the</strong> most viable <strong>and</strong>/or most easily-tested hypo<strong>the</strong>ses. Exploratory<br />

data collection <strong>and</strong> hypo<strong>the</strong>sis-testing are concurrent processes, with improvements,<br />

refinements, <strong>and</strong> evaluations <strong>of</strong> <strong>the</strong> latter task ultimately being contingent upon successful<br />

completion <strong>of</strong> <strong>the</strong> former one.<br />

Over <strong>the</strong> next several years, recovery efforts should focus on <strong>the</strong> following topics:<br />

a. Management Actions--Although limited in scope, a suite <strong>of</strong> management actions is<br />

available that could reduce <strong>the</strong> rate <strong>of</strong> <strong>the</strong> <strong>Spectacled</strong> <strong>Eider</strong>’s population decline <strong>and</strong> pave<br />

<strong>the</strong> way for recovery once <strong>the</strong> obstacles have been identified. Most specific tasks fall into<br />

four broad categories: (1) reduction <strong>of</strong> eider mortality; (2) development <strong>of</strong> ownership in<br />

recovery through increased dialogue <strong>and</strong> Memor<strong>and</strong>a <strong>of</strong> Agreement; (3) Section 7<br />

consultations <strong>and</strong> permitting; <strong>and</strong> (4) development <strong>of</strong> captive flocks.<br />

Confirmed sources <strong>of</strong> eider mortality include lead poisoning, predation, human harvest,<br />

injury, <strong>and</strong> researcher impact. Since <strong>the</strong>se sources <strong>of</strong> <strong>Spectacled</strong> <strong>Eider</strong> mortality operate<br />

on <strong>the</strong> breeding grounds, <strong>the</strong> people who share <strong>the</strong> l<strong>and</strong> with <strong>the</strong> eiders must be intimately<br />

involved in <strong>the</strong> recovery process. Current dialogue must be exp<strong>and</strong>ed to develop a<br />

common underst<strong>and</strong>ing <strong>and</strong> cooperation essential to effect recovery. Through Memor<strong>and</strong>a<br />

<strong>of</strong> Agreement, <strong>the</strong> <strong>Service</strong> involves in <strong>the</strong> decision making process local governments,<br />

Native organizations <strong>and</strong> villages, <strong>the</strong> ADF&G, <strong>and</strong> <strong>the</strong> National Biological <strong>Service</strong> in<br />

developing <strong>the</strong> most effective strategies to achieve reductions in eider mortality. If<br />

appropriate, <strong>the</strong> Memor<strong>and</strong>a <strong>of</strong>Agreement for managing marine mammals <strong>and</strong> <strong>the</strong> Yukon-<br />

Kuskokwim Delta Goose Management Plan could serve as models for eider agreements.<br />

40

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!