欧美精品在线第一页,久久av影院,午夜视频在线播放一三,久久91精品久久久久久秒播,成人一区三区,久久综合狠狠综合久久狠狠色综合,成人av一区二区亚洲精,欧美a级在线观看

Coral species can regulate calcium content to cope with rising ocean acidity: Aussie research

Source: Xinhua| 2018-05-02 14:26:37|Editor: Chengcheng
Video PlayerClose

SYDNEY, May 2 (Xinhua) -- Some coral species are able to regulate calcium buildup in their skeletons to better survive acidic oceans caused by rising CO2 levels, according to a latest Australian research.

The findings improved understanding of how the crucial marine organisms cope with environmental challenges.

"Ocean acidification is a decrease of seawater pH caused by human CO2 emissions entering the waters. As the pH level declines, the changes in ocean chemistry make it more difficult for corals to build their skeletons (which consists of calcium carbonate)," the University of Western Australia's Dr. Thomas DeCarlo, who led the coral study published in the Proceedings of the Royal Society B scientific journal, told Xinhua on Wednesday.

"This means that they will either build smaller skeletons or they will need to invest more energy into building their skeletons," said DeCarlo.

While many laboratory experiments have found different coral species displaying different sensitivities to ocean acidification over the past decade, "it has not been possible to measure calcium of the 'calcifying fluid' because that is so small and isolated underneath the living coral," said DeCarlo.

"We tested how corals control the levels of calcium in the micro-scale fluid where they build their skeletons under different seawater pH treatments," he said.

In the study, DeCarlo placed two coral species in waters with three different pH levels and used a novel technique involving lasers to help understand the chemical composition of their skeletons and the process of formation.

"We found that one coral species (Pocillopora damicornis) was able to increase calcium content to counter the negative effects of reduced pH, and it built its skeleton at normal rates. Conversely, a second species (Acropora youngeii) did not increase its calcium, and it built its skeleton at slower than normal rates under reduced pH."

"Our results suggest that some coral species have the ability to resist the effects of ocean acidification by modulating their internal calcium levels," DeCarlo said.

The findings suggested that the community composition of future coral reefs could change irrevocably due to ocean acidification, at the same time offering the hope that some corals are able to survive in acidified seawater, he said.

But it was still difficult to estimate the cost of such change, "in particular whether resisting acidification makes these corals more vulnerable to other stressors such as rising temperatures."

TOP STORIES
EDITOR’S CHOICE
MOST VIEWED
EXPLORE XINHUANET
010020070750000000000000011100001371510271
主站蜘蛛池模板: 亚洲精品www久久久久久广东| 欧美一区二区三区性| 国产欧美视频一区二区三区| 中文字幕一区二区三区免费| 午夜剧场伦理| 91精品视频在线免费观看| 日韩精品一区二区久久| 欧美日韩国产午夜| 日韩夜精品精品免费观看| 午夜老司机电影| 精品国产91久久久| 亚洲麻豆一区| 日韩精品免费一区二区夜夜嗨| 国产精品久久久久久久久久久新郎 | 手机看片国产一区| 国产理论一区二区三区| 高清国产一区二区| 国产精品9区| 91久久国语露脸精品国产高跟 | 亚洲欧美另类综合| 国产videosfree性另类| 国产91高清| 色综合久久精品| 国产精品免费观看国产网曝瓜| 国产高清一区在线观看| 日本白嫩的18sex少妇hd| 久久不卡精品| 91热精品| 91久久香蕉| 国产九九影院| 性欧美激情日韩精品七区| 国产伦理久久精品久久久久| 中文字幕日韩一区二区| 国产一级一区二区| 91精品资源| 国产一级精品在线观看| 国产一二三区免费| 国产不卡一区在线| 国产精品综合一区二区三区| 99精品偷拍视频一区二区三区 | 国产精品自产拍在线观看桃花| 中文字幕国内精品| 久久精视频| 欧洲另类类一二三四区| 麻豆精品国产入口| 午夜免费网址| 狠狠躁狠狠躁视频专区| 国产欧美一区二区三区免费 | 欧美一区二区免费视频| 久久久精品欧美一区二区| 国产一区二区视频免费在线观看| 国产一区二区在| 在线观看欧美一区二区三区| xxxxx色| 精品福利一区| 欧美精品久久一区| 亚洲**毛茸茸| 亚洲国产精品一区在线| 国产91高清| 亚洲精品乱码久久久久久蜜糖图片| 99久久国产免费| 国产精品一级片在线观看| 小萝莉av| 久久九精品| 国产视频一区二区在线播放| 欧美极品少妇xx高潮| 午夜精品一区二区三区在线播放| 国产精品一区在线观看你懂的 | 91理论片午午伦夜理片久久 | 久久久久久久国产精品视频| 国产一区二区三区伦理| 一级午夜影院| 欧美日韩亚洲另类| 久99久精品| 黄色国产一区二区| 国产91色综合| 国产99久久九九精品| 国产色婷婷精品综合在线播放| 亚洲va国产2019| 久久国产视屏| 日本少妇高潮xxxxⅹ| 日韩一级视频在线|