Details:

Personal Author:
McClure, Michelle M., 1965-; Anderson, Joseph H.; Pess, George R.; Cooney, Thomas D.; Carmichael, Richard W. (Richard William); ... More +
McClure, Michelle M., 1965-; Anderson, Joseph H.; Pess, George R.; Cooney, Thomas D.; Carmichael, Richard W. (Richard William); Baldwin, Casey M.; Hesse, Jay A.; Weitkamp, Laurie A. (Laurie Ann); Holzer, Damon M. (Damon Michael); Sheer, Mindi B.; Lindley, Steven T.; Less -
Corporate Authors:
Northwest Fisheries Science Center (U.S.);
NOAA Program & Office:
NMFS (National Marine Fisheries Service); NWFSC (Northwest Fisheries Science Center);
NMFS (National Marine Fisheries Service); NWFSC (Northwest Fisheries Science Center); Less -
Description:
Local extirpations of Pacific salmon, often due to dams and other stream barriers, are common throughout the western United States. Reestablishing salmonid populations in areas they historically occupied has substantial potential to assist conservation efforts, but best practices for reintroduction are not well established. In this report, we present a framework for planning reintroductions designed to promote recovery of salmonids listed under the Endangered Species Act. Prior to implementation, managers should first describe the benefits, risks, and constraints of a proposed reintroduction. We define benefits as specific biological improvements toward recovery objectives. Risks are potential negative outcomes of reintroductions that could worsen conservation status rather than improve it. Constraints are biological factors that will determine whether the reintroduction successfully establishes a self-sustaining population. We provide guidance for selecting a recolonization strategy (natural colonization, transplanting, or hatchery releases), a source population, and methods for providing passage that will maximize the probability of conservation benefit while minimizing risks. Monitoring is necessary to determine whether the reintroduction successfully achieves the benefits, and to evaluate impacts on nontarget species or populations. Many of the benefits, especially diversity and the evolution of locally adapted population segments, are likely to accrue over decadal time scales. Thus, we view reintroduction as a long-term approach to enhancing viability.
Content Notes:
Michelle McClure, Joseph Anderson, George Pess, Tom Cooney, Rich Carmichael, Casey Baldwin, Jay Hesse, Laurie Weitkamp, Damon Holzer, Mindi Sheer, and Steve Lindley. "April 2018." Includes bibliographical references (pages 34-42).
Keywords:
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Anadromous Fishes
Ecology
Effect Of Dams On
Effect Of Environment On
Effect Of Habitat Modification On
Fishery Management
Fish Populations
Marine Riparian Ecology
Monitoring
Pacific Salmon
Planning

Series:
NOAA technical memorandum NMFS-NWFSC ; 141;
DOI:
http://doi.org/10.7289/V5/TM-NWFSC-141
Document Type:
Technical Memorandum;
Place as Subject:
Washington (State); Columbia River;
Washington (State); Columbia River; Less -
Rights Information:
Public Domain
Compliance:
Submitted
Main Document Checksum:
[+]
urn:sha256:a01ea163010e2d8c29e91a589926ec27a7f7e17c984c17d20fe5acde21b8eefa
File Type:

Supporting Files

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