气候变化对淡水湖中植物的结构和功能所产生的预期影响
Edina Lengyel1, Csilla Stenger-Kovács1, Gergely Boros2
1Limnology Research Group, Center for Natural Science, University of Pannonia, Egyetem utca 10, H-8200, Veszprém, Hungary; HUN-REN-PE Limnoecology Research Group, Egyetem utca 10, H-8200, Veszprém, Hungary.
Environmental research
|October 2, 2023
概括
气候变化将对浅湖植物产生重大影响. 温度上升改变了物种和特征组成,减少了多样性,增加了可变性,在预测的排放场景下威胁着生态系统功能.
科学领域:
- 生态生态学 生态生态学
- 临界技术 临界技术
- 气候变化科学 气候变化科学
背景情况:
- 浅湖很容易受到气候变化的影响,气温上升会影响水生生态系统.
- 对于水生动物健康至关重要的植物,在全球变暖影响方面没有得到充分的研究.
- 了解气候变化对植物的影响对于浅湖生态系统管理至关重要.
研究的目的:
- 实验性地研究气候变化场景 (SSP2-4.5和SSP5-8.5) 对浅湖植物的影响.
- 分析物种和特征组成,多样性和社区变异性的变化.
- 评估气候变暖对底藻群体的功能影响.
主要方法:
- 户外中宇宙实验模拟中等和高排放场景.
- 基于物种和特征的方法来分析植物植物群体结构.
- 测量生物膜厚度和光合作用效率 (光系统II的最大量子产量).
主要成果:
- 温度上升3°C改变了物种和特征组成,降低了香农的多样性,增加了社区的变异性.
- 5°C的升温导致了剧烈的变化,包括类丰度的变化 (有利于菌和菌),功能多样性减少,生物膜厚度增加,光合作用产量减少.
- 特征转移有利于更小的细胞大小,细丝状的形式,和非运动类.
结论:
- 即使是中间的气候变化场景也对浅湖植物植物的生物多样性构成高风险.
- 高排放场景将极大地影响盆地藻类,可能危及生态系统功能.
- 迫切需要采取缓解策略,以保护这些重要的水生社区免受气候变化的影响.
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