東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Fishery Ecology of Seychelles' Sea C...

Koike, Haruko.

Linked to FindBook

Google Book

Amazon

博客來

Fishery Ecology of Seychelles' Sea Cucumber Fishery.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Fishery Ecology of Seychelles' Sea Cucumber Fishery./
Author:	Koike, Haruko.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
Description:	183 p.
Notes:	Source: Dissertation Abstracts International, Volume: 79-01(E), Section: B.
Contained By:	Dissertation Abstracts International79-01B(E).
Subject:	Ecology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10656601
ISBN:	9780355264838

Fishery Ecology of Seychelles' Sea Cucumber Fishery.
Koike, Haruko.

Fishery Ecology of Seychelles' Sea Cucumber Fishery. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 183 p.

Source: Dissertation Abstracts International, Volume: 79-01(E), Section: B.

Thesis (Ph.D.)--University of Hawai'i at Manoa, 2017.

Sustainable fisheries productions have been an important factor for human livelihoods, yet the number of overfished fisheries have increased over the years. With strong market demand, sea cucumber fishery has a trend of initial rapid growth followed by a collapse due to the local depletion of the stock. Seychelles enjoys one of the few long-term tropical sea cucumber fishery owing to its strong management capacity. Using Seycelles as a case study, this dissertation explored possible sustainable management options for tropical sea cucumber fisheries. First, I studied the ecology of sea cucumber in Seychelles, then examined their fishery pattern, and determined the sustainable catch limit for the fishery. In Seychelles' unique granitic plateau system, most of the commercially targeted sea cucumbers were found in mid-depth zone. However, the depth range of these species were capped around 40m, where bottom substrate changed from sand to silt lacking biological cover. Marine protected areas in Seychelles were mainly designed to protect shallow coral reef habitat thus did not have significant effect in protecting the targeted sea cucumber species. The analysis of the fishery showed that fishermen have been fishing further from port and spent longer time at the sea. The target species have expanded to lower value species as the time progressed. Despite trip costs have increased from further fishing grounds and longer fishing days, fishermen's net gain per trip increased over the years since the market growth surpassed the trip cost increase. Combining the ecological findings and fishery pattern, I created a spatially explicit surplus production model to account for spatial expansion and different habitat quality across the Seychelles waters. The model showed that H. fuscogilva has hardly recruited from 2002 to 2011. The carrying capacity of the specie showed differences among depth and upwelling zone. Based on the extremely low recruitment rate, we propose that H. fuscogilva be removed from the list of species allowed to harvest in Seychelles.

ISBN: 9780355264838Subjects--Topical Terms:

516476
Ecology.

Fishery Ecology of Seychelles' Sea Cucumber Fishery.
LDR:02989nmm a2200301 4500 001 2200477
005 20190315110956.5
008 201008s2017 ||||||||||||||||| ||eng d
020 $a 9780355264838
035 $a (MiAaPQ)AAI10656601
035 $a AAI10656601
040 $a MiAaPQ $c MiAaPQ
100 1 $a Koike, Haruko. $3 3427227
245 1 0 $a Fishery Ecology of Seychelles' Sea Cucumber Fishery.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2017
300 $a 183 p.
500 $a Source: Dissertation Abstracts International, Volume: 79-01(E), Section: B.
500 $a Adviser: Alan Friedlander.
502 $a Thesis (Ph.D.)--University of Hawai'i at Manoa, 2017.
520 $a Sustainable fisheries productions have been an important factor for human livelihoods, yet the number of overfished fisheries have increased over the years. With strong market demand, sea cucumber fishery has a trend of initial rapid growth followed by a collapse due to the local depletion of the stock. Seychelles enjoys one of the few long-term tropical sea cucumber fishery owing to its strong management capacity. Using Seycelles as a case study, this dissertation explored possible sustainable management options for tropical sea cucumber fisheries. First, I studied the ecology of sea cucumber in Seychelles, then examined their fishery pattern, and determined the sustainable catch limit for the fishery. In Seychelles' unique granitic plateau system, most of the commercially targeted sea cucumbers were found in mid-depth zone. However, the depth range of these species were capped around 40m, where bottom substrate changed from sand to silt lacking biological cover. Marine protected areas in Seychelles were mainly designed to protect shallow coral reef habitat thus did not have significant effect in protecting the targeted sea cucumber species. The analysis of the fishery showed that fishermen have been fishing further from port and spent longer time at the sea. The target species have expanded to lower value species as the time progressed. Despite trip costs have increased from further fishing grounds and longer fishing days, fishermen's net gain per trip increased over the years since the market growth surpassed the trip cost increase. Combining the ecological findings and fishery pattern, I created a spatially explicit surplus production model to account for spatial expansion and different habitat quality across the Seychelles waters. The model showed that H. fuscogilva has hardly recruited from 2002 to 2011. The carrying capacity of the specie showed differences among depth and upwelling zone. Based on the extremely low recruitment rate, we propose that H. fuscogilva be removed from the list of species allowed to harvest in Seychelles.
590 $a School code: 0085.
650 4 $a Ecology. $3 516476
650 4 $a Aquatic sciences. $3 3174300
650 4 $a Wildlife management. $3 571816
690 $a 0329
690 $a 0792
690 $a 0286
710 2 $a University of Hawai'i at Manoa. $b Zoology. $3 3284923
773 0 $t Dissertation Abstracts International $g 79-01B(E).
790 $a 0085
791 $a Ph.D.
792 $a 2017
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10656601