在变暖的海洋中,草放牧鱼体球体
Reina J Veenhof1, Melinda A Coleman1,2, Curtis Champion1,2
1National Marine Science Centre, Faculty of Environment, Science and Engineering, Southern Cross University, Coffs Harbour, New South Wales, Australia.
Journal of phycology
|July 11, 2023
概括
年轻的海食用海藻类的双胞胎细胞,影响海藻的招募. 海洋变暖阻碍了游戏体的恢复,但一些鱼甚至可能促进海藻体的发展.
科学领域:
- 海洋生态海洋生态学
- 凯尔普森林动力学 凯尔普森林动力学
- 气候变化影响 气候变化影响
背景情况:
- 海森林是重要的海洋生态系统,受到海过度放牧的威胁.
- Kelp 招募依赖于微观的体球菌,其生态仍然不太了解.
- 海洋变暖对海藻种群构成重大威胁,特别是在它们的范围边缘.
研究的目的:
- 为了调查青少年海放牧的海藻体质细胞是否抑制了海藻的招募.
- 确定气候变化,特别是海洋变暖是否加剧了这种压制.
- 探索草食动物,游戏植物和不断变化的环境条件之间的复杂相互作用.
主要方法:
- 两个幼年海鱼物种 (Tripneustes gratilla和Centrostephanus rodgersii) 的Ecklonia radiata类植物相对放牧率.
- 评估了三个温度处理的牧场影响:冬季 (19°C),夏季 (23°C) 和海洋变暖 (26°C).
- 检查了放牧后的游戏细胞的恢复和摄入后的存活/胞胎细胞的形成.
主要成果:
- 与对照物种相比,这两种鱼物种显著降低了雌同体丰富度.
- 温度没有影响放牧率,但在26°C时,体细胞复原被抑制.
- 甲植物在摄入后幸存下来;T. gratilla促进了胞形成,而C. rodgersii没有.
结论:
- 青少年海对海藻招募产生复杂的影响,具有负面 (减少丰度,恢复受损) 和积极 (促进招募) 影响.
- 海洋变暖会对鱼在放牧后的体型复苏产生负面影响.
- 小型牧草动物对于海藻生态系统的功能和对生态系统状态转变的理解至关重要.
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