과학자들: 바다 산성 높아져 먹이그물 위협

SCIENTISTS: RISING ACIDITY THREATENS OCEAN FOOD WEB
  조회:  9,629   등록 일자: February 02   카테고리: 
By CORNELIA DEAN ⓒ2009 New York Times News Service The oceans have long buffered the effects of climate change by absorbing a substantial portion of the greenhouse gas carbon dioxide. But this benefit has a catch: as the gas dissolves, it makes seawater more acidic. 오랫동안 바다는 온실 가스인 탄산가스의 상당 부분을 흡수함으로써 기후 변화 효과의 완충 작용을 해왔다. 그러나 이러한 효험에도 문제가 내재한다. 가스가 녹으면서 그것이 해수의 산도를 높이고 있다. Now an international panel of marine scientists says this acidity is accelerating so fast it threatens the survival of coral reefs, shellfish and the marine food web generally. 해양 과학자들로 구성된 한 국제적인 그룹은 이 산성이 너무 빨리 촉진되는 바람에 산호초들, 갑각류 동물들과 전반적인 바다의 먹이그물의 생존을 위협하고 있다고 말했다. The panel, comprising 155 scientists from 26 countries and other international groups, is not the first to point to growing ocean acidity as an environmental threat. For example, a group of eminent scientists convened by The Nature Conservancy issued a similar assessment in August. But the new report’s blunt language and international backing give its assessment unusual force. It called for “urgent action” to sharply reduce emissions of carbon dioxide. “Severe damages are imminent,” the group said Friday in a statement summing up its deliberations at a symposium in Monaco last October. The statement, called the Monaco Declaration, said increasing acidity was interfering with the growth and health of shellfish and eating away at coral reefs, processes that would eventually affect marine food webs generally. Already, the group said, there have been detectable decreases in shellfish and shell weights, and interference with the growth of coral skeletons. (ⓒ2009 The New York Times) (ⓒ2009 usabriefing.net)
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