气候变暖引起的海洋生物效应(3/3)

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概述: 抑制温室气体排放已刻不容缓。爱自己，爱生活，爱地球，低碳生活，你我做起~o(￣ヘ￣o*)~
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Cheung
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口语节目地址：http://bulo.hujiang.com/menu/11921/item/669305/As the atmosphere is warmed by heat-trapping emissions from fossil-fueled power plants, buildings and automobiles, so too is the ocean. And in a warmer ocean, Cheung says, there is less dissolved oxygen available to fish, who need it for normal growth.
"So at some point, the fish will stop growing because they just cannot get sufficient oxygen to support growth in addition to maintaining their normal body function."  
The study is the first to predict that a warmer ocean could mean smaller fish in the decades ahead. It also suggests that global warming may exacerbate the damage to fish populations already being done through overfishing, pollution and habitat loss.
"If you look at the fish population that is already depleted, that their critical habitat are deteriorated, they have a smaller capacity to respond to climate change compared to fish populations that are still abundant or that they are well managed and in good conditions. So we need to manage our marine ecosystems effectively as well."
Cheung says the study concludes that failure to curb climate-changing greenhouse gas emissions could further risk damage to marine ecosystems, global fisheries and an essential source of the world's food.在化石燃料发电厂、建筑和汽车排放的温室气体使大气变暖的同时，海洋也变暖了。Cheung说，海水温度升高，其中的溶解氧减少，而这正是鱼类正常生长所需的。
“所以，鱼儿在长到一定程度后就会停止生长。因为在消耗了维持正常身体机能所需的氧气后，就没有足够的氧气支持它继续生长了。”
该研究首开先河，预测在未来的几十年，海水变暖会导致鱼类变小。研究也提到，在过度捕捞、水污染、栖息地丧失等威胁下业已备受伤害的鱼群，在全球变暖的情况下可能会受到更大的伤害。
“主要栖息地环境恶化、鱼群已所剩无几，如果注意到这一点你会发现，比起其他在良好的管理下数量依然庞大的、状态良好的鱼群，它们适应气候变化的能力更弱。所以我们也必须有效地管理海洋生态系统。”
Cheung说，该研究的结论是：如果不能有效控制能引起气候变化的温室气体排放，海洋生态系统、全球渔业和世界上粮食的基本来源之一就会遭受进一步危害。