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Ichthyoplankton distribution around ...

Castro, Leonardo Roman.

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Ichthyoplankton distribution around Barbados: Patterns and processes conducive to retention.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Ichthyoplankton distribution around Barbados: Patterns and processes conducive to retention./
Author:	Castro, Leonardo Roman.
Description:	205 p.
Notes:	Source: Dissertation Abstracts International, Volume: 56-07, Section: B, page: 3624.
Contained By:	Dissertation Abstracts International56-07B.
Subject:	Biology, Oceanography. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9537804

Ichthyoplankton distribution around Barbados: Patterns and processes conducive to retention.
Castro, Leonardo Roman.

Ichthyoplankton distribution around Barbados: Patterns and processes conducive to retention. - 205 p.

Source: Dissertation Abstracts International, Volume: 56-07, Section: B, page: 3624.

Thesis (Ph.D.)--State University of New York at Stony Brook, 1995.

Because most coral reef fishes have planktonic early life stages vulnerable to long distance transport, reef fish populations from isolated oceanic islands are expected to utilize local oceanographic features for retention of their offspring. Although several potential mechanisms of larval retention have been proposed around islands, they have remained largely unproven because simultaneous measurements of the hydrodynamics and of the larval distributions have rarely been obtained. The main objective of this dissertation is to determine potential mechanisms of larval retention around the Caribbean island of Barbados.Subjects--Topical Terms:

783691
Biology, Oceanography.

Ichthyoplankton distribution around Barbados: Patterns and processes conducive to retention.
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040 $a UnM $c UnM
100 1 $a Castro, Leonardo Roman. $3 1948087
245 1 0 $a Ichthyoplankton distribution around Barbados: Patterns and processes conducive to retention.
300 $a 205 p.
500 $a Source: Dissertation Abstracts International, Volume: 56-07, Section: B, page: 3624.
500 $a Adviser: Robert Keith Cowen.
502 $a Thesis (Ph.D.)--State University of New York at Stony Brook, 1995.
520 $a Because most coral reef fishes have planktonic early life stages vulnerable to long distance transport, reef fish populations from isolated oceanic islands are expected to utilize local oceanographic features for retention of their offspring. Although several potential mechanisms of larval retention have been proposed around islands, they have remained largely unproven because simultaneous measurements of the hydrodynamics and of the larval distributions have rarely been obtained. The main objective of this dissertation is to determine potential mechanisms of larval retention around the Caribbean island of Barbados.
520 $a Two potential mechanisms of larval retention were determined. First, a nearshore stratified current system along the west coast of the island could be utilized by larvae to be transported shoreward at mid-depth. Alternatively, a larger scale circulation pattern around the Barbadian Ridge could be utilized by the larvae to return to the vicinity of the island.
520 $a Mesoscale, oceanographic features of remote origin impinged onto the area during both cruises conducted to Barbados in 1990 and 1991. The effect of these oceanographic disturbances on the larval community was a shift of the location of larval assemblages with relative different proportions of reef-to-oceanic larvae along the west coast in 1990, and the advection of coral reef fish larvae away from the island in 1991.
520 $a Larval behavior, estimated as the tendency of larvae to aggregate at specific strata and to vertically migrate diel and ontogenetically, was detected in several of the most common species around Barbados. More interestingly, a linkage between larval behavior and the local hydrodynamics, especially associated to the retention mechanism documented before, was determined in groups of species located in different areas around the island.
520 $a The overall results of this dissertation suggest that multiple mechanisms of larval retention may occur around islands and that their significance for the local coral reef fish populations may be strongly affected by mesoscale oceanographic features disrupting the local circulation.
590 $a School code: 0771.
650 4 $a Biology, Oceanography. $3 783691
650 4 $a Biology, Ecology. $3 1017726
650 4 $a Biology, Zoology. $3 1018632
690 $a 0416
690 $a 0329
690 $a 0472
710 2 0 $a State University of New York at Stony Brook. $3 1019194
773 0 $t Dissertation Abstracts International $g 56-07B.
790 1 0 $a Cowen, Robert Keith, $e advisor
790 $a 0771
791 $a Ph.D.
792 $a 1995
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9537804