東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Growth and yield -per -recruit model...

Piner, Kevin Ray.

FindBook

Google Book

Amazon

博客來

Growth and yield -per -recruit modeling of spot (Leiostomus xanthurus) in the Chesapeake Bay, and a comparison of biological reference points.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Growth and yield -per -recruit modeling of spot (Leiostomus xanthurus) in the Chesapeake Bay, and a comparison of biological reference points./
作者:	Piner, Kevin Ray.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 1999,
面頁冊數:	108 p.
附註:	Source: Dissertation Abstracts International, Volume: 61-04, Section: B, page: 1710.
Contained By:	Dissertation Abstracts International61-04B.
標題:	Aquatic sciences. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9970451
ISBN:	9780599754683

Growth and yield -per -recruit modeling of spot (Leiostomus xanthurus) in the Chesapeake Bay, and a comparison of biological reference points.
Piner, Kevin Ray.

Growth and yield -per -recruit modeling of spot (Leiostomus xanthurus) in the Chesapeake Bay, and a comparison of biological reference points. - Ann Arbor : ProQuest Dissertations & Theses, 1999 - 108 p.

Source: Dissertation Abstracts International, Volume: 61-04, Section: B, page: 1710.

Thesis (Ph.D.)--Old Dominion University, 1999.

Spot were sampled from the Chesapeake Bay commercial fishery from 1993--1995 to determine if spot are overfished. Transversely sectioned otoliths were determined to be the most appropriate structure for ageing spot. It was determined that spot have a high natural mortality rate (M = 0.9) and fast growth (K = 0.6). This combination of M and K makes spot relatively impervious to growth overfishing as determined by yield-per-recruit modeling. Because spot are nearly impervious to growth overfishing, management thresholds based on yield-per-recruit modeling may be inappropriate. In addition, the combination of high M and fast K makes it possible to completely fish out a cohort before it reaches its first potential spawning event and still not growth overfish the stock. Spawner Potential Ratios (SPR) per recruit were developed to assess the potential of recruitment overfishing spot. At current levels of fishing mortality (F), less than 20% of the potential reproductive effort of a cohort is available for spawning. Levels of F should be reduced to F = 1, to allow SPR = 20%. Levels of F should not, however, be reduced much below F = 1 to avoid under-utilizing the potential cohort biomass.

ISBN: 9780599754683Subjects--Topical Terms:

3174300
Aquatic sciences.

Growth and yield -per -recruit modeling of spot (Leiostomus xanthurus) in the Chesapeake Bay, and a comparison of biological reference points.
LDR:02204nmm a2200301 4500 001 2121889
005 20170821084145.5
008 180830s1999 ||||||||||||||||| ||eng d
020 $a 9780599754683
035 $a (MiAaPQ)AAI9970451
035 $a AAI9970451
040 $a MiAaPQ $c MiAaPQ
100 1 $a Piner, Kevin Ray. $3 3283831
245 1 0 $a Growth and yield -per -recruit modeling of spot (Leiostomus xanthurus) in the Chesapeake Bay, and a comparison of biological reference points.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 1999
300 $a 108 p.
500 $a Source: Dissertation Abstracts International, Volume: 61-04, Section: B, page: 1710.
500 $a Director: Cynthia M. Jones.
502 $a Thesis (Ph.D.)--Old Dominion University, 1999.
520 $a Spot were sampled from the Chesapeake Bay commercial fishery from 1993--1995 to determine if spot are overfished. Transversely sectioned otoliths were determined to be the most appropriate structure for ageing spot. It was determined that spot have a high natural mortality rate (M = 0.9) and fast growth (K = 0.6). This combination of M and K makes spot relatively impervious to growth overfishing as determined by yield-per-recruit modeling. Because spot are nearly impervious to growth overfishing, management thresholds based on yield-per-recruit modeling may be inappropriate. In addition, the combination of high M and fast K makes it possible to completely fish out a cohort before it reaches its first potential spawning event and still not growth overfish the stock. Spawner Potential Ratios (SPR) per recruit were developed to assess the potential of recruitment overfishing spot. At current levels of fishing mortality (F), less than 20% of the potential reproductive effort of a cohort is available for spawning. Levels of F should be reduced to F = 1, to allow SPR = 20%. Levels of F should not, however, be reduced much below F = 1 to avoid under-utilizing the potential cohort biomass.
590 $a School code: 0418.
650 4 $a Aquatic sciences. $3 3174300
650 4 $a Commerce-Business. $3 3168423
650 4 $a Ecology. $3 516476
690 $a 0792
690 $a 0505
690 $a 0329
710 2 $a Old Dominion University. $3 1020684
773 0 $t Dissertation Abstracts International $g 61-04B.
790 $a 0418
791 $a Ph.D.
792 $a 1999
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9970451