English  |  正體中文  |  简体中文  |  Items with full text/Total items : 26988/38789
Visitors : 2358413      Online Users : 34
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search
LoginUploadHelpAboutAdminister

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/52131

Title: Study of hydrological environmental fators' influence on lizardfishes resources change in the south-western waterss off Taiwan.
Authors: Chi-Chang Lai
Ching-Min Yang
Jia-Sin He
Long-Jing Wu
Hsueh-Jung Lu
Contributors: 國立臺灣海洋大學:環境生物與漁業科學學系
Keywords: Hydrological Environment
lizardfishes
Bottom Trawlnet
SOI
Date: 2013-06
Issue Date: 2019-02-22T01:12:26Z
Publisher: J. Fish. Soc. Taiwan
Abstract: Abstract: A lot of studies have been done on the fishing grounds shift and resources of surface and mid-layer
migratory fishes near Taiwan, but less were done on the bottom dwelling fish species. In this research, the
bottom dwelling lizardfishes commonly used for processed seafood products were studied to understand
the shift of its resources during the 15 year period between 1997 and 2011, under the climate change
index and environment factors of its habitat.
Results show Saurida undosquamis is the main lizardfish species caught in the south-western waters
of Taiwan. Comparing water temperature, fishing season, spawning peak, landing, CPUE, feeding habits
and geographic information, we found it moves to the warmer shallow waters after spawning peak during
Jan.- Mar., and return after September. Climate change index, SOI, PDO, MEI, temperature and salinity
factor at depth are relevant to the shift in its resources, but not sea surface temperature, salinity and river
drainage. Judging from the variation of these climate change factors, the occurrence of La Niña raises the
CPUE of lizardfishes, with a positive correlation with temperature change and a negative correlation with
salinity respectively at the depth of 100 m. These facts suggest that the strong northeast monsoon that La
Niña brings is conducive to the vertical mixing of different water layers. Furthermore, water from the South
China Sea, carrying more nutrient than the Kuroshio Current, flows through the Penghu Channel also
contributes to the increase in lizardfishes resources. Sudden changes in the hydrological environment
such as typhoons, may result in the increase of lizardfishes resources as well.
This research will help to predict changes in the lizardfish resources under the influence of
hydrological environment changes which provide an important reference for making responsive strategies
in the future.
Relation: 40(2) pp.89-106
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/52131
Appears in Collections:[環境生物與漁業科學學系] 期刊論文

Files in This Item:

File Description SizeFormat
index.html0KbHTML6View/Open


All items in NTOUR are protected by copyright, with all rights reserved.

 


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback