预测亚历山大菌种的生态风险 在气候变化下:一个整体建模方法
Ru Lan1,2, Luning Li1, Rongchang Chen1
1China Waterborne Transport Research Institute, Beijing 100088, China.
Biology
|November 27, 2025
概括
由亚历山大种类引起的有害藻类繁殖 (HABs). 是一个日益增长的威胁. 盐度和温度是关键因素,气候变化预计将使息地向南移动,增加中国南部的风险.
科学领域:
- 海洋生态海洋生态学
- 海洋学 海洋学 海洋学
- 环境科学 环境科学
背景情况:
- 亚历山大物种引起的有害藻类繁殖 (HAB) 对全球海洋生态系统,渔业和公共健康构成重大风险.
- 了解Alexandrium spp. 的分布和环境驱动因素. 对于有效的管理和缓解策略至关重要.
研究的目的:
- 预测亚历山大种类的潜在分布. 在当前和未来的气候场景下,使用组合建模.
- 确定影响亚历山大 spp. 的关键环境因素. 分布和评估时间空间息地变迁.
- 为中国沿海水域HAB的积极管理策略提供信息.
主要方法:
- 采用Biomod2整体建模框架,包含469个事件记录和24个海洋环境变量.
- 利用当前和未来的气候场景 (包括RCP8.5) 来预测潜在的物种分布.
- 分析了息地中位移,以了解时空动态.
主要成果:
- 整体模型显示了高准确度 (AUC = 0.998,TSS = 0.977).
- 盐度 (范围和平均值) 和最低温度被确定为主要的环境驱动因素.
- 预计适合息地将向南移动,在高排放场景下大幅扩张,在中国南部海岸沿线创造新的高风险地区.
结论:
- 盐度和温度是塑造亚历山大种群生态利基的关键因素.
- 预计气候变化将加剧中国南部的HAB风险,需要转向主动管理.
- 该研究为有针对性的HAB监测和加强海洋生态安全提供了科学基础.
相关概念视频
What is Climate?
20.4K
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
20.4K
Design Example: Analyzing Capacity Contours for Flood Risk Assessment
270
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
270
Global Climate Change
28.7K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
28.7K
Adaptations that Reduce Water Loss
27.9K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
27.9K
Steps in Outbreak Investigation
472
In the ever-evolving field of public health, statistical analysis serves as a cornerstone for understanding and managing disease outbreaks. By leveraging various statistical tools, health professionals can predict potential outbreaks, analyze ongoing situations, and devise effective responses to mitigate impact. For that to happen, there are a few possible stages of the analysis:
472


