Monitoring fish habitat compensation in the Pacific region : lessons from the past 30 years / Michael J. Bradford, J. Stevenson Macdonald, and Colin D. Levings.: Fs70-5/2017-033E-PDF

“To offset the impacts of development projects on fish and fish habitat, compensation or offsetting works can be required as a condition of an Authorization issued under the Fisheries Act. However, the efficacy of these works is often unknown as follow-up monitoring is infrequently conducted. Here we review past habitat compensation and restoration monitoring activities in Canada’s Pacific Region. We first describe various types of monitoring schemes that differ in their objectives, the types of information collected, and required levels of expertise. We then review monitoring studies in the Region with a focus on four case histories. We found successful monitoring of biotic responses (fish or invertebrates) were few as the spatial and temporal scales of most programs were too limited to cope with natural and sampling variation. Few studies had pre-project baseline information, and subsequently sampling relied on comparisons of treatment sites against control or reference areas. A number of the most insightful studies sampled sequentially over time and identified decadal-scale changes in constructed habitats. Most monitoring programs were of insufficient scope to estimate the effect of restored or constructed habitats on fish population productivity. We conclude that when designing a monitoring program investigators carefully specify their objectives and determine whether those objectives can be met given available resources, time, and expertise"--Abstract, p. v.

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Publication information
Department/Agency Canada. Department of Fisheries and Oceans.
Canada.Ecosystems and Oceans Science.
Canadian Science Advisory Secretariat.
Title Monitoring fish habitat compensation in the Pacific region : lessons from the past 30 years / Michael J. Bradford, J. Stevenson Macdonald, and Colin D. Levings.
Series title Canadian Science Advisory Secretariat (CSAS), research document, 1919-5044 ; 2017/033, Pacific Region
Publication type Series - View Master Record
Language [English]
Format Electronic
Electronic document

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Note(s) Cover title.
“May 2017.”
Title at head of French abstract: Surveillance de la compensation de l'habitat du poisson dans la région du Pacifique : les leçons tirées des 30 dernières années.
Includes bibliographical references (p. 13-16).
Includes abstract in French.
Publishing information Ottawa : Fisheries and Oceans Canada, Canadian Science Advisory Secretariat, 2017.
Author / Contributor Bradford, Michael J.
Macdonald, John Stevenson, 1953-
Levings, C. D.
Description vi, 26 p. : charts, col. ill.
Catalogue number
  • Fs70-5/2017-033E-PDF
Subject terms Fish, Habitats, Nature conservation

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