相关实验视频
Updated: Jun 25, 2025

09:47
Spotting Cheetahs: Identifying Individuals by Their Footprints
Published on: May 1, 2016
14.8K
在气候和土地利用变化下的子亚种保护
Charlotte Mitchell1, Jamie Bolam1, Laura D Bertola2
1Biosciences University of Exeter Exeter UK.
Ecology and evolution
|May 23, 2024
概括
全球环境变化威胁子亚种,非洲和阿拉伯面临范围丧失. 保护工作必须解决保护差距和人类与野生动物之间的冲突,而波斯可能会扩大其范围.
科学领域:
- 保护生物学 保护生物学
- 生态生态学 生态生态学
- 气候变化的影响 气候变化的影响
背景情况:
- 像这样的大型食肉动物对生态系统健康至关重要,但面临着全球环境变化带来的威胁.
- 子 (Panthera pardus) 是适应性的类动物,对非洲和亚洲的生态系统至关重要,但它们的数量正在下降.
- 了解气候和土地利用变化如何影响分布对于有效的保护至关重要.
研究的目的:
- 在气候和土地利用变化下,预测三种西部子物种的未来范围适应性.
- 通过将预测范围与保护区 (PA) 重叠来确定保护差距和机会.
- 突出子脆弱性评估中的物种内变异的重要性.
主要方法:
- 针对非洲,阿拉伯和波斯子物种的物种内部物种分布模型 (SDM) 已开发出来.
- 未来的气候和土地利用场景被用来预测适合息地的变化.
- 预测的适合范围与现有保护区覆盖范围一起进行了分析.
主要成果:
- 子种对环境变化表现出不同的反应:非洲可能会失去约25%,阿拉伯可能会失去约14%,波斯可能会获得约12%的适合范围.
- 目前,相当一部分适合的息地,只有4%-16%,受到保护,预计这一比例将下降.
- 保护区不足以覆盖未来适合的范围,需要社区参与和息地恢复.
结论:
- 种内变异显著影响对环境变化的脆弱性,强调了对子物种特定保护战略的需要.
- 保护区覆盖范围不足和保护区以外的持续迫害对子的生存构成重大威胁.
- 保护机会包括以社区为基础的冲突缓解,息地恢复,并利用恢复野生动植物的举措来扩大潜在的范围,特别是欧洲的波斯.
相关概念视频
Conservation of Declining Populations
9.6K
Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
9.6K
Conservation of Small Populations
13.1K
Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...
13.1K
What is Conservation Biology?
18.4K
Conservation biology is a scientific field that focuses on the preservation of biodiversity in order to protect ecosystems while meeting the needs of the human population. Humans require properly functioning ecosystems to maintain our supply of natural resources, including food, medicines, and building materials.
18.4K
Threats to Biodiversity
22.2K
There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
22.2K
Habitat Fragmentation
17.5K
Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.
17.5K
Predator-Prey Interactions
16.2K
Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
16.2K

