当物种不能一起移动时:东太平洋海藻森林社区的非并发范围转移
Mary R Cortese1, Amy L Freestone1
1Department of Biology, Temple University, Philadelphia, Pennsylvania, United States of America.
PloS one
|May 24, 2024
概括
海洋变暖正在全球范围内改变物种范围. 这项研究模拟了东太平洋的巨型海藻 (Macrocystis pyrifera) 和紫色海 (Strongylocentrotus purpuratus),揭示了与潜在生态系统重组相关的非同时发生的范围变化.
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
- 种类分布建模 种类分布建模
背景情况:
- 全球海洋变化正在推动物种范围的变化,改变生态社区和相互作用.
- 个体物种分布模型往往忽略了生物相互作用,这可能会限制准确性.
- 了解这些相互作用对于预测生态系统对气候变化的反应至关重要.
研究的目的:
- 调查消费者互动在塑造东太平洋海藻森林中物种分布的重要性.
- 在不断变化的海洋条件下,模拟巨型海藻 (Macrocystis pyrifera) 和紫色海 (Strongylocentrotus purpuratus) 的潜在范围变化.
- 评估非并发范围转移对树林生态系统结构的影响.
主要方法:
- 利用Maxent框架进行物种分布建模.
- 在东太平洋模拟了巨型海藻 (Macrocystis pyrifera) 和紫色海 (Strongylocentrotus purpuratus) 的范围.
- 分析了两种物种的预测范围变化,考虑到它们的同时出现.
主要成果:
- 预计巨型海藻 (Macrocystis pyrifera) 在其范围的北部扩大,没有明显的南部收缩.
- 紫色海 (Strongylocentrotus purpuratus) 的模型表明,与北方范围的扩张同时,南方范围的非并发性收缩.
- 确定了空间竞争增加的潜力,用于覆盖范围的基板.
结论:
- 不同时发生的M. pyrifera和S. purpuratus的范围转移可能会导致严重的生态后果.
- 潜在的影响包括草食动物的释放,海藻森林生态系统的热带化和整体生态系统重组.
- 强调将生物相互作用纳入物种分布模型的重要性,以便准确地进行生态预测.
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