Eco-physiological adaptations that favour freshwater cyanobacteria in a changing climate
Eco-physiological adaptations that favour freshwater cyanobacteria in a changing climate
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DOI：
10.1016/j.watres.2011.12.016
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发表时间：
2012-04-01
期刊：
影响因子：
12.8
通讯作者：
Brookes, Justin D.
中科院分区：
文献类型：
--
作者：
Carey, Cayelan C.;Ibelings, Bas W.;Brookes, Justin D.
气候变化情景预测，河流、湖泊和水库将经历温度升高、热分层更强烈和更长时间、水文变化和营养负荷改变。这些环境驱动因素将对淡水浮游植物物种组成和生物量产生重大影响，可能比其他浮游植物更有利于蓝藻。在这篇综述中，我们研究了几种蓝藻的生态生理特性，特别是在温暖的温度下生长的能力；浮力;对磷有很高的亲和力和储存能力；固氮;厚壁孢子生产;有效的光收集能力在蓝藻属中各不相同，这可能使它们在未来的气候情景中占据主导地位。我们预测，气候变化的空间变化将与蓝藻的生理变化相互作用，造成区域间蓝藻优势类群的差异。最后，我们认为不同蓝藻分类群的生理特征可能在不同地区对某些分类群有利，但总体而言，未来大多数地区的蓝藻分类群可能会增加。(C) 2011 Elsevier Ltd.版权所有。
Climate change scenarios predict that rivers, lakes, and reservoirs will experience increased temperatures, more intense and longer periods of thermal stratification, modified hydrology, and altered nutrient loading. These environmental drivers will have substantial effects on freshwater phytoplankton species composition and biomass, potentially favouring cyanobacteria over other phytoplankton. In this Review, we examine how several cyanobacterial eco-physiological traits, specifically, the ability to grow in warmer temperatures; buoyancy; high affinity for, and ability to store, phosphorus; nitrogen-fixation; akinete production; and efficient light harvesting, vary amongst cyanobacteria genera and may enable them to dominate in future climate scenarios. We predict that spatial variation in climate change will interact with physiological variation in cyanobacteria to create differences in the dominant cyanobacterial taxa among regions. Finally, we suggest that physiological traits specific to different cyanobacterial taxa may favour certain taxa over others in different regions, but overall, cyanobacteria as a group are likely to increase in most regions in the future. (C) 2011 Elsevier Ltd. All rights reserved.