Implications of substrate complexity and kelp variability for south-central Alaskan nearshore fish communities

Hamilton , Judy and Konar, Brenda (2007) Implications of substrate complexity and kelp variability for south-central Alaskan nearshore fish communities. Fishery Bulletin, 105(2), pp. 189-196.

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Abstract

Understanding the interactions between kelp beds and nearshore fish is essential because anthropogenic changes and natural variability in these beds may affect available habitat for fishes. In this study fish communities were investigated in south-central Alaska kelp beds characterized by a range of substrate complexity and varying densities of both perennial understory kelps and annual canopy kelps. Many of the observed fish species, as well as understory and canopy kelps, were positively associated with structurally complex substratum. Targeted canopy and understory kelp beds supported seasonal populations of adult and juvenile Pacific cod (Gadus macrocephalus), rockfishes (Sebastes spp.), and year-round populations of greenlings (Hexagrammos spp.). Monthly changes in kelp and fish communities ref lected seasonal changes; the densities of some species were greatest during periods with higher temperatures. This work illustrates the importance of structurally complex kelp beds with persistent understory kelp populations as important fish habitat for several commercially and recreationally important fishes.

Item Type: Article
Title: Implications of substrate complexity and kelp variability for south-central Alaskan nearshore fish communities
Personal Creator/Author:
CreatorsEmail
Hamilton , Judy
Konar, Brenda
Refereed: Yes
Journal or Publication Title: Fishery Bulletin
Volume: 105
Number: 2
Page Range: pp. 189-196
Date: 2007
ISSN: 0090-0656
Issuing Agency: United States National Marine Fisheries Service
Subjects: Biology
Ecology
Fisheries
Item ID: 8891
Depositing User: Patti M. Marraro
Date Deposited: 18 Jun 2012 09:33
Last Modified: 18 Jun 2012 09:33
URI: http://aquaticcommons.org/id/eprint/8891

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