在一个变暖的世界中,温度依赖的分散和外热物种的分布
1Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, California, USA.
The Journal of animal ecology
|February 26, 2024
概括
物种的分散是适应气候变暖的关键. 这项研究模拟了ectotherms中取决于温度的分散,显示了它如何促进范围扩张和适应新热环境.
科学领域:
- 生态生态学 生态生态学
- 气候变化生物学 气候变化生物学
- 数学生物学 数学生物学
背景情况:
- 由于气候变暖,物种分布正在发生变化.
- 分散是物种范围转移的关键因素,但其温度依赖程度尚不清楚.
- 占生物多样性的很大一部分的生态热植物对温度变化特别敏感.
研究的目的:
- 开发一个数学模型,将温度依赖的分散纳入ectotherms.
- 调查温度如何影响分散阶段:迁移,转移和定居.
- 分析温度依赖的分散对物种在气候变暖下范围扩张的影响.
主要方法:
- 开发了一个空间人口动态模型,并对ectotherm生命史特征进行了机械描述.
- 明确地将温度依赖性纳入分散的所有阶段.
- 分析了关于热带和温带外热生物的范围转移,死亡率和丰度模式的模型预测.
主要成果:
- 随机和温度依赖的分散,使得ectotherms能够跟踪变暖并扩大范围超出历史的热极限.
- 热带ectotherms显示较大的极向扩张潜力比温带的由于较低的死亡率和更高的热最佳.
- 散播死亡率阻碍了向过度温暖地区的扩张,并影响了丰富性,有利于适应性散播策略.
结论:
- 取决于温度的分散是ectotherm适应气候变化的关键机制.
- 了解分散温度的依赖性对于预测物种对变暖的反应至关重要.
- 该模型提供了关于入侵,适应和在气候变化中分散策略的演变的见解.
相关概念视频
00:54Distribution and Dispersion
21.8K
To understand intra-specific interactions in populations, scientists measure the spatial arrangement of species individuals. This geographic arrangement is known as the species distribution or dispersion. Highly territorial species exhibit a uniform distribution pattern, in which individuals are spaced at relatively equal distances from one another. Species that are highly tied to particular resources, such as food or shelter, tend to concentrate around those resources, and thus exhibit a...
21.8K
01:50Global Climate Change
24.4K
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.
24.4K
01:28Factors Affecting Body Temperature
4.1K
As a nurse, it is vital to understand the factors affecting body temperature to monitor variations and effectively evaluate deviations from regular.
Factors may include:
Factors may include:
4.1K
01:17Radiation: Applications
1.2K
The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
The average...
The average...
1.2K
02:45Responses to Heat and Cold Stress
13.5K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.5K
02:55Temperature Dependence on Reaction Rate
81.7K
The Collision Theory
Atoms, molecules, or ions must collide before they can react with each other. Atoms must be close together to form chemical bonds. This premise is the basis for a theory that explains many observations regarding chemical kinetics, including factors affecting reaction rates.
The collision theory is based on the postulates that (i) the reaction rate is proportional to the rate of reactant collisions, (ii) the reacting species collide in an orientation allowing contact between...
Atoms, molecules, or ions must collide before they can react with each other. Atoms must be close together to form chemical bonds. This premise is the basis for a theory that explains many observations regarding chemical kinetics, including factors affecting reaction rates.
The collision theory is based on the postulates that (i) the reaction rate is proportional to the rate of reactant collisions, (ii) the reacting species collide in an orientation allowing contact between...
81.7K