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Spatial-temporal patterns in distrib...

Kemp, Iris M.

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Spatial-temporal patterns in distribution and feeding of juvenile salmon and herring in Puget Sound, WA.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Spatial-temporal patterns in distribution and feeding of juvenile salmon and herring in Puget Sound, WA./
作者:	Kemp, Iris M.
面頁冊數:	132 p.
附註:	Source: Masters Abstracts International, Volume: 52-06.
Contained By:	Masters Abstracts International52-06(E).
標題:	Aquatic sciences. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1554958
ISBN:	9781303864438

Spatial-temporal patterns in distribution and feeding of juvenile salmon and herring in Puget Sound, WA.
Kemp, Iris M.

Spatial-temporal patterns in distribution and feeding of juvenile salmon and herring in Puget Sound, WA. - 132 p.

Source: Masters Abstracts International, Volume: 52-06.

Thesis (Master's)--University of Washington, 2014.

This item is not available from ProQuest Dissertations & Theses.

This study described the distribution and feeding of juvenile salmon (Oncorhynchus spp.) and Pacific herring (Clupea pallasi ) in Puget Sound to explore the potential for resource competition among these species. We used surface townets, midwater trawls, and acoustics surveys to assess distributions of fish in surface waters, among bathymetric zones, and depth strata in the water column. Seasonal and spatial variability was evident in epipelagic biomass. Occurrence of biomass generally increased progressively during the summer and shifted to deeper depths. Despite considerable variability, spatial, temporal, and dietary overlap was observed among herring and juvenile salmon, especially for Chinook and coho salmon. Crab larvae and amphipods were important prey for most salmon species and herring. Herring were present in higher abundances than salmon and had high population-level consumption demand. If food resources are limiting, there is potential for competitive interactions among salmon and herring.

ISBN: 9781303864438Subjects--Topical Terms:

3174300
Aquatic sciences.

Spatial-temporal patterns in distribution and feeding of juvenile salmon and herring in Puget Sound, WA.
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506 $a This item is not available from ProQuest Dissertations & Theses.
520 $a This study described the distribution and feeding of juvenile salmon (Oncorhynchus spp.) and Pacific herring (Clupea pallasi ) in Puget Sound to explore the potential for resource competition among these species. We used surface townets, midwater trawls, and acoustics surveys to assess distributions of fish in surface waters, among bathymetric zones, and depth strata in the water column. Seasonal and spatial variability was evident in epipelagic biomass. Occurrence of biomass generally increased progressively during the summer and shifted to deeper depths. Despite considerable variability, spatial, temporal, and dietary overlap was observed among herring and juvenile salmon, especially for Chinook and coho salmon. Crab larvae and amphipods were important prey for most salmon species and herring. Herring were present in higher abundances than salmon and had high population-level consumption demand. If food resources are limiting, there is potential for competitive interactions among salmon and herring.
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