Effect of aragonite saturation state on settlement and post-settlement growth of Porites astreoides larvae
Effect of aragonite saturation state on settlement and post-settlement growth of Porites astreoides larvae
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DOI：
10.1007/s00338-008-0392-5
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发表时间：
2008-09-01
期刊：
影响因子：
3.5
通讯作者：
Langdon, C.
中科院分区：
文献类型：
--
作者：
Albright, R.;Mason, B.;Langdon, C.
为应对21世纪预测的PCO(2)增加，成年珊瑚的生长和钙化预计将显著减少。然而，还没有发表的研究调查PCO(2)升高对珊瑚早期生活史阶段的影响。从美国佛罗里达州基拉戈岛的珊瑚礁采集赤潮鱼幼鱼，在控制饱和状态的海水中定居和饲养。在2065年(560ppm)和2100年(720ppm)的当前(380ppm)和预测的PCO(2)情景下，使用1M HCl添加获得了三种饱和状态。分析了饱和状态对沉降量和沉降后增长的影响。饱和状态对沉降率没有显著影响，但骨骼延伸率与饱和状态呈正相关，中等和高PCO(2)处理的生长量分别比对照减少50%和78%。
In response to the increases in pCO(2) projected in the 21st century, adult coral growth and calcification are expected to decrease significantly. However, no published studies have investigated the effect of elevated pCO(2) on earlier life history stages of corals. Porites astreoides larvae were collected from reefs in Key Largo, Florida, USA, settled and reared in controlled saturation state seawater. Three saturation states were obtained, using 1 M HCl additions, corresponding to present (380 ppm) and projected pCO(2) scenarios for the years 2065 (560 ppm) and 2100 (720 ppm). The effect of saturation state on settlement and post-settlement growth was evaluated. Saturation state had no significant effect on percent settlement; however, skeletal extension rate was positively correlated with saturation state, with similar to 50% and 78% reductions in growth at the mid and high pCO(2) treatments compared to controls, respectively.