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Regional analysis of seafloor charac...

Kobara, Shinichi.

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Regional analysis of seafloor characteristics at reef fish spawning aggregation sites in the Caribbean.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Regional analysis of seafloor characteristics at reef fish spawning aggregation sites in the Caribbean./
作者:	Kobara, Shinichi.
面頁冊數:	155 p.
附註:	Source: Dissertation Abstracts International, Volume: 71-03, Section: B, page: 1586.
Contained By:	Dissertation Abstracts International71-03B.
標題:	Physical Oceanography. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3400764
ISBN:	9781109679625

Regional analysis of seafloor characteristics at reef fish spawning aggregation sites in the Caribbean.
Kobara, Shinichi.

Regional analysis of seafloor characteristics at reef fish spawning aggregation sites in the Caribbean. - 155 p.

Source: Dissertation Abstracts International, Volume: 71-03, Section: B, page: 1586.

Thesis (Ph.D.)--Texas A&M University, 2009.

Overfishing of stock and decreasing biodiversity are grave concerns for the U.S. and the rest of the world. In the Caribbean, one of the critical science gaps hindering effective management is the lack of information on how environmental factors may make fish spawning aggregation (FSA) sites optimal for spawning. Understanding and applying spatial information of marine species' reproductive ecology and critical life habitat such as the patterns of seafloor characteristics of FSA sites is vital to efficiently design marine protected areas (MPAs) to help rebuild regional fish stocks.

ISBN: 9781109679625Subjects--Topical Terms:

1019163
Physical Oceanography.

Regional analysis of seafloor characteristics at reef fish spawning aggregation sites in the Caribbean.
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245 1 0 $a Regional analysis of seafloor characteristics at reef fish spawning aggregation sites in the Caribbean.
300 $a 155 p.
500 $a Source: Dissertation Abstracts International, Volume: 71-03, Section: B, page: 1586.
500 $a Advisers: William D. Heyman; Anthony M. Filippi.
502 $a Thesis (Ph.D.)--Texas A&M University, 2009.
520 $a Overfishing of stock and decreasing biodiversity are grave concerns for the U.S. and the rest of the world. In the Caribbean, one of the critical science gaps hindering effective management is the lack of information on how environmental factors may make fish spawning aggregation (FSA) sites optimal for spawning. Understanding and applying spatial information of marine species' reproductive ecology and critical life habitat such as the patterns of seafloor characteristics of FSA sites is vital to efficiently design marine protected areas (MPAs) to help rebuild regional fish stocks.
520 $a The specific goals of the study were: (1) to map the seafloor at historically known grouper and snapper spawning aggregation sites in three different countries, and (2) to characterize quantitatively the geomorphology of the sites including horizontal and vertical curvature profiles of the reefs, bottom depth at spawning sites, distance between spawning sites and shelf-edges/reef promontory tips, and the shortest distance between the spawning sites and 100 m water depth. These data were field-collected with a global positioning system (GPS) and eco-sounder that provided latitude/longitude and depth. The point data were interpolated to surfaces in GIS to determine slope, curvature, and distance from spawning sites and three-dimensional reef structures.
520 $a This study revealed that all 12 known Nassau grouper spawning aggregation sites in Belize and 5 known sites in the Cayman Islands were located at convex-shaped seaward extending reefs (reef promontories) jutting into deep water, within 1 km of reef promontory tips. However, spawning aggregations did not always occur at the tips of reef promontories, though all were found along the shelf edges within 1 km of promontory tips. Sixteen sites were multi-species spawning sites. These general characteristics were used to predict an undiscovered multi-species spawning aggregation in Belize. A successful prediction in Belize, together with the compiled data from multiple sites indicate: (1) reef promontories are vital locations for transient reef fish spawning aggregations, (2) three-dimensional information and analysis are necessary to locate grouper and snapper FSA sites, and (3) this study provides a potential tool for not only design for MPAs but also prediction of unknown spawning sites in the Caribbean.
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650 4 $a Biology, Oceanography. $3 783691
650 4 $a Geomorphology. $3 542703
650 4 $a Marine Geology. $3 1674685
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