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Marine influence on juvenile fish tr...

O'Brien, Michael Henry Patrick.

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Marine influence on juvenile fish trophic ecology and community dynamics in Maryland's northern coastal lagoons.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Marine influence on juvenile fish trophic ecology and community dynamics in Maryland's northern coastal lagoons./
作者:	O'Brien, Michael Henry Patrick.
面頁冊數:	117 p.
附註:	Source: Masters Abstracts International, Volume: 52-03.
Contained By:	Masters Abstracts International52-03(E).
標題:	Ecology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1547744
ISBN:	9781303499449

Marine influence on juvenile fish trophic ecology and community dynamics in Maryland's northern coastal lagoons.
O'Brien, Michael Henry Patrick.

Marine influence on juvenile fish trophic ecology and community dynamics in Maryland's northern coastal lagoons. - 117 p.

Source: Masters Abstracts International, Volume: 52-03.

Thesis (M.S.)--University of Maryland, College Park, 2013.

This item must not be sold to any third party vendors.

Marine influence on Maryland's juvenile lagoon fish community was examined under varied levels of internal and external forcing. In 2009, stable isotope analysis showed increasing marine carbon dependency by bay anchovy with decreasing distance to the marine inlet. Following large seagrass losses, no similar trend was detected in 2012. Weakfish showed no structured dependence on marine carbon in either year. Diet contents lacked corresponding year-to-year changes in pelagic versus benthic prey items. In 2009, serial changes with distance to the inlet occurred in species assemblage, which may have been associated with internal seagrass structure. No gradient occurred in 2012. Analysis of a 24-year survey indicated a shift from marine-pelagic to structure-oriented species, associated with increased seagrass and tide level, and decreased North Atlantic Oscillation index. In Maryland's northern lagoon, the strength of marine influence on juvenile assemblages depended on the interplay between internal bay structure and external marine forcing.

ISBN: 9781303499449Subjects--Topical Terms:

516476
Ecology.

Marine influence on juvenile fish trophic ecology and community dynamics in Maryland's northern coastal lagoons.
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520 $a Marine influence on Maryland's juvenile lagoon fish community was examined under varied levels of internal and external forcing. In 2009, stable isotope analysis showed increasing marine carbon dependency by bay anchovy with decreasing distance to the marine inlet. Following large seagrass losses, no similar trend was detected in 2012. Weakfish showed no structured dependence on marine carbon in either year. Diet contents lacked corresponding year-to-year changes in pelagic versus benthic prey items. In 2009, serial changes with distance to the inlet occurred in species assemblage, which may have been associated with internal seagrass structure. No gradient occurred in 2012. Analysis of a 24-year survey indicated a shift from marine-pelagic to structure-oriented species, associated with increased seagrass and tide level, and decreased North Atlantic Oscillation index. In Maryland's northern lagoon, the strength of marine influence on juvenile assemblages depended on the interplay between internal bay structure and external marine forcing.
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