氣候變遷嚴重衝擊熱帶漁業 由加拿大British Columbia大學(UBC)主導與Princeton大學所組成的研究團隊,於近日刊登於美國全球變遷生物學(Global Change Biology)期刊上的一份研究報告指出,因氣候變遷衝擊漁業分布的大變動將嚴重危及熱帶食物安全。而此份檢視氣候變遷對海洋漁業有何衝擊的有巢氏房屋第一份重大報告警告,氣候變遷將改寫世界漁業生產力的分佈與全球海洋食物供應模式。報告認為氣候變遷可能為如挪威、格陵蘭島、阿拉斯加與俄羅斯東岸等高緯度地區,在2055年帶來三至七成的漁獲;並可能導致如印尼、美國(包括阿拉斯加與夏威夷)、智利與中國等熱帶地區的漁獲衰退達四成。報告認商務中心為寒冷地帶漁獲增加表面看來是好事,研究眾多影響每種生態系統的動態因子仍是不可或缺。報告進一步分析約有1,066種小至磷蝦(krill)大至鯊魚的系群就佔去全球漁獲七成。研究試著將大量影響漁業的環境與生物因子導入兩種氣候變遷方案並進行模型測試,發現其中一個較另外一個穩定,並測量兩種酒店打工方案如何影響2005至2055年的漁業分布情況。(摘譯自INFOFISH Trade News, NO. 19/2009)~~~~~~~~~~~~~~FISHERIES IN TROPICAL REGIONS TO BE HARDEST HIT BY CLIMATE CHANGEMajor shifts in fisheries distribution due to climate change will affect food security in tropical regions 新成屋most adversely,according to a study led by researchers at the University of British Columbia (UBC), Canada.In the first major study to examine the effects of climate change on ocean fisheries, a team of researchers from UBC andPrinceton University found that climate 酒店兼職change will produce major shifts in productivity of the world’s fisheries,affecting ocean food supply throughout the world. The study was published recently in the US journal Global ChangeBiology. The study projected that climate change may lead to a 30 to 70% increase 酒店兼職in catch potential in high-latituderegions and a drop of up to 40% in the tropics. The study found that regions with the highest increase in catch potentialby 2055 include Norway, Greenland, Alaska and the east coast of Russia. Meanwhile, regions with the biggest loss 買屋網incatch potential include Indonesia, the US (excluding Alaska and Hawaii), Chile and China. While greater catch potentialin colder regions might appear beneficial, the authors caution that more research is needed to account for the multitudeof dynamic factors that 辦公室出租affect every ecosystem. The study analyzed 1 066 species ranging from krill to sharks thatconstitute roughly 70% of the world’s catch. The authors used models that include a large number of environmental andbiological factors that affect fisheries. They ran these 景觀設計models through two climate change scenarios, one moreconservative than the other, and measured the impact of the scenarios on fish distribution from the years 2005 to 2055.


.msgcontent .wsharing ul li { text-indent: 0; }



分享

Facebook
買屋Plurk
YAHOO!

創作者介紹

長野

fb20fbzpxz 發表在 痞客邦 PIXNET 留言(0) 人氣()