由气候驱动的跨塔斯曼人群增加,息地改变,范围扩大海Centrostephanus rodgersii
Sterling B Tebbett1, Graham J Edgar2, Celia A Balemi3
1Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, 7001, Australia; College of Science and Engineering, James Cook University, Townsville, Queensland, 4811, Australia.
Journal of environmental management
|August 8, 2025
概括
全球气候变化正在推动塔斯马尼亚和新西兰的海 (Centrostephanus rodgersii) 种群增加. 这些增加,特别是在新西兰,威胁着海藻森林,需要紧急的管理干预.
科学领域:
- 海洋生态海洋生态学
- 气候变化生物学 气候变化生物学
- 侵袭性物种管理 侵袭性物种管理
背景情况:
- 全球气候变化正在改变海洋的热度梯度,导致物种重新分布和珊瑚礁热化.
- 海Centrostephanus rodgersii是一种息地修饰者,由于海洋变暖,其范围扩大,太平洋西南地区的种群增加.
- 罗杰西菌种数量的增加与塔斯马尼亚东部和新西兰东北部的海藻数量下降有关.
研究的目的:
- 检查塔斯马尼亚和新西兰近几十年来C. rodgersii丰度的区域变化.
- 调查C. rodgersii丰富度和最低海面温度 (SST) 之间的关系.
- 评估新西兰C. rodgersii种群增加的未来潜力.
主要方法:
- 利用广的空间尺度数据和特定区域的深度分层数据来分析C. rodgersii的丰度.
- 塔斯马尼亚 (2001/022016/17) 和新西兰 (20122024) 的丰度数据进行比较.
- 采用模拟估计,将C. rodgersii的丰度与SST相关,以预测未来的人口变化.
主要成果:
- 在研究期间,C. rodgersii的丰度在塔斯马尼亚增加了1.7倍,在新西兰增加了3.3倍.
- 在新西兰观察到的丰度变化大于塔斯马尼亚,并与基于SST的预测保持一致.
- 建模估计表明,新西兰在8.1米深处可能进一步增加约2.7倍.
结论:
- 与塔斯马尼亚相比,新西兰东北部的C. rodgersii人口密度增加得更大,未来增长的潜力更高.
- 这些发现强调了气候变化对海洋生态系统和物种分布的重大影响.
- 需要紧急建立或加强管理计划,以控制这两个地区不断增加的C. rodgersii种群.
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