Eutrophication and warming-driven green tides (Ulva rigida) are predicted to increase under future climate change scenarios
Eutrophication and warming-driven green tides (Ulva rigida) are predicted to increase under future climate change scenarios
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DOI：
10.1016/j.marpolbul.2016.10.003
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发表时间：
2017-01-15
影响因子：
5.8
通讯作者：
Caldwell, Gary S.
中科院分区：
文献类型：
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作者：
Gao, Guang;Clare, Anthony S.;Caldwell, Gary S.
异常大型藻类水华（绿色潮）的发生率和严重程度正在增加。在这里，气候变化（海洋变暖和酸化）对生活史的影响和生化反应的一个原因绿色潮物种，石莼，进行了调查的组合下的pH值（7.95，7.55，对应于较低和较高的pCO（2）），温度（14，18摄氏度）和硝酸盐的可用性（6和150 μ mol L-1）。较高的温度加速了配子定居的开始和规模。任何两个因素的组合促进发芽和加速生长的幼苗。较高的温度增加了繁殖，这与pCO（2）或硝酸盐的升高相结合进一步增加。结合所有三个变量的上限时，生殖成功率最高（64.4 +/- 5.1%）。在生物化学上，在较高温度和硝酸盐条件下，合成更多的蛋白质和脂质，而较少的碳水化合物。这些结果表明，气候变化可能会导致更严重的绿色潮，特别是当富营养化不能得到有效控制。(C)2016爱思唯尔有限公司版权所有
The incidence and severity of extraordinary macroalgae blooms (green tides) are increasing. Here, climate change (ocean warming and acidification) impacts on life history and biochemical responses of a causative green tide species, Ulva rigida, were investigated under combinations of pH (7.95, 7.55, corresponding to lower and higher pCO(2)), temperature (14,18 degrees C) and nitrate availability (6 and 150 mu mol L-1). The higher temperature accelerated the onset and magnitude of gamete settlement. Any two factor combination promoted germination and accelerated growth in young plants. The higher temperature increased reproduction, which increased further in combination with elevated pCO(2) or nitrate. Reproductive success was highest (64.4 +/- 5.1%) when the upper limits of all three variables were combined. Biochemically, more protein and lipid but less carbohydrate were synthesized under higher temperature and nitrate conditions. These results suggest that climate change may cause more severe green tides, particularly when eutrophication cannot be effectively controlled. (C) 2016 Elsevier Ltd. All rights reserved.