The Impact of Climate Change on Resources and Fishing Ground of Distant-Water Tuna Fisheries

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Project title

Code/計畫編號

103農科-11.1.1-漁-F7(Z)

Translated Name/計畫中文名

氣候變遷對遠洋鮪類資源及漁場變動之影響

Project Coordinator/計畫主持人

Hsueh-Jung Lu

Funding Organization/主管機關

Council of Agriculture,Executive Yuan

Department/Unit

Department of Environmental Biology and Fisheries Science

Website

https://www.grb.gov.tw/search/planDetail?id=11386022

Year

2014

Start date/計畫起

01-01-2014

Expected Completion/計畫迄

31-12-2014

Co-Investigator(s)

Ming-An Lee

Bugetid/研究經費

1290千元

ResearchField/研究領域

漁業

一、氣候變遷對太平洋及大西洋鮪延繩釣影響潛勢之研究本研究以太平洋及大西洋的鮪旗魚類為對象，分析環境因素對個別鮪魚系群之漁況與資源量變動的影響，並建構鮪類生態與環境結合的分析模式，以評估氣候與海洋環境變異可能帶來的衝擊，促進鮪旗魚資源的永續利用。擬完成之工作項目包括：(1) 太平洋及大西洋鮪旗魚漁場環境資料庫建立；(2)太平洋及大西洋鮪旗魚漁況及資源與環境變遷關係之解析；(3) 分析探討未來氣候變遷對遠洋鮪釣漁業產業或管理可能遭遇之問題。二、氣候變遷對印度洋鮪類漁海況之影響分析大洋的海洋環境變動會受全球氣候變遷的影響而隨之改變，鮪旗魚類及其他海洋生物的分布與洄游環境因而受到影響，此等環境變動造成海洋生態的衝擊已是近年來魚類生態學者及社會關注的課題之一。本研究擬以我國在印度洋鮪釣作業的主要經濟鮪類為對象研究印度洋鮪旗魚類漁場與海洋環境之長期變動特性，解析氣候變異(如印度洋震盪事件)造成海洋環境變動對鮪旗魚類之分布與漁況長期之影響，並針對不同氣候變遷情境模擬(A1B、A2和B1)之印度洋海洋環境資料，包含表水溫、海面高度以及水色資料，以解析氣候變遷所造成環境變動因素對主要經濟鮪旗魚類之漁況與資源量長期變動的影響，並建構鮪類漁場與環境變動結合的分析模式，以評估海洋環境變遷可能帶來的衝擊，以評估海洋環境變遷可能帶來的衝擊，探討產業或管理可能遭遇的問題。I. Potential analysis of climatic change impact on the fishing condition of tuna longline fisheries in the Pacific and Atlantic Oceans In this sub-project, we try to analyze the fishing condition and stock abundance of tuna and billfish in Pacific and Atlantic oceans in their relations to climatic variability. Ecological and environment coupled models will be established in order to evaluate possible impact from climatic and environment variability and to promote sustainable utilization of tuna resources. We aim to reach following items: 1. the establishment of fishing ground database in Pacific and Atlantic Oceans; 2. the fluctuation of fishing and stock condition for tuna and billfish in relation to the oceanic environmental variability in Pacific and Atlantic Oceans; 3. the present and future problem and solution of tuna fisheries and management under climate change. II. Effects of climate change on the marine environment and tuna fishery in the Indian Ocean Climatic oscillations, anomalies, and changes clearly affect population dynamics and many ecological processes in marine ecosystems. Variations in population abundances and distributions of pelagic tuna species are consistently associated with large-scale marine environmental variations and climate indices. Environmental factors may influence fish habitats and fishing grounds, and therefore will have positive or negative effects on catch rates. The purposes of this study were to investigate whether the climatic and marine environmental variations affect catches and distributions of tuna and billfish in the Indian Ocean. We modeled the effect of SST warming in a site-selection model i.e., scenarios given in the fourth assessment report of the Intergovernmental Panel on Climate Change (IPCC, 2007). The longline fishery data were used to evaluate transient relationships of the marine environmental change with catch rates and distributions of the fishing grounds and were also used to predict potential tuna and billfish habitats.

Keyword(s)

黃鰭鮪
長鰭鮪
大西洋
太平洋
大目鮪
劍旗魚
鮪漁場學
印度洋
Yellowfin tuna
Albacore
the Atlantic Ocean
the Pacific Ocean
Bigeye tuna
Swordfish
Tuna Oceanography
Indian Ocean

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The Impact of Climate Change on Resources and Fishing Ground of Distant-Water Tuna Fisheries

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