对陆地和海洋生物群的气候变暖和疾病风险
C Drew Harvell1, Charles E Mitchell, Jessica R Ward
1Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 14853, USA. cdh5@cornell.edu
Science (New York, N.Y.)
|June 22, 2002
概括
气候变化对野生动物的传染病产生影响,可能导致人口减少. 了解这些气候疾病的动态对于预测未来的流行病和保护生物多样性至关重要.
科学领域:
- 生态生态学 生态生态学
- 病理学 病理学 病理学
- 气候科学 气候科学
背景情况:
- 传染病对生物多样性构成重大威胁,导致人口减少和灭绝.
- 温度,降雨量和湿度等环境因素影响病原体动态和宿主易感性.
- 预计气候变化,特别是气候变暖,将改变陆地和海洋生态系统中传染病的频率和严重程度.
研究的目的:
- 研究气候变量与野生种群中的传染病之间的复杂相互作用.
- 评估气候变暖如何加剧或减轻疾病对生物多样性的影响.
- 通过解开气候驱动因素来改善疾病流行病的预测模型.
主要方法:
- 对有关气候-宿主-病原体相互作用的现有文献的审查.
- 对证实气候对特定病原体的影响的案例研究进行分析 (例如,珊瑚病,裂谷热).
- 强调需要区分气候驱动因素的独立和互动影响.
主要成果:
- 气候变暖通常会增加病原体的生存,传播和宿主易感性,导致更严重的疾病爆发.
- 一个病原体的子集可能会随着变暖而下降,可能会从疾病压力中释放宿主.
- 气候模式的变化,例如厄尔尼诺-南方振荡事件,已经明显影响了各种病原体.
结论:
- 气候变化通过改变传染病动态,对生物多样性构成双重威胁.
- 预测疾病爆发需要对多种气候因素如何相互作用的细微了解.
- 需要进一步的研究来分离气候驱动因素,以便在野生种群中准确预测流行病.
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