相关实验视频
Updated: Jun 4, 2025

00:09
Cortisol Measurement in Koala Phascolarctos cinereus Fur
Published on: August 23, 2019
10.6K
巴西灵长类动物的保护挑战以及保护区在气候变化中的作用
Letícia Braga Gomes1,2, Gabriela Ribeiro Gonçalves3, Santiago José Elías Velazco4,5
1Programa de Pós-Graduação em Ecologia, Instituto de Ciência Biológicas, Universidade Federal do Pará, Belém, Brazil.
Scientific reports
|December 29, 2024
概括
土地使用变化和气候变化威胁着巴西灵长类动物,预计将有超过90%的息地丧失. 现有的保护区 (PA) 提供了不充分的保护,需要扩大以防止灭绝.
科学领域:
- 生态与保护生物学 生态与保护生物学
- 气候变化影响 气候变化影响
- 生物多样性丧失 生物多样性丧失
背景情况:
- 土地利用变化和气候变化是生物多样性丧失的主要驱动因素.
- 灵长类动物高度依赖森林覆盖,特别容易受到息地碎片化和丧失的影响.
- 保护区对于保护临灭绝的物种,特别是特有灵长类动物至关重要.
研究的目的:
- 评估气候变化和森林砍伐对35种危巴西灵长类动物分布的影响.
- 根据当前和未来的气候场景,评估PA在保留适合灵长类动物息地的能力.
- 为了确定当前的PA是否充分保护受威胁的灵长类物种.
主要方法:
- 利用物种分布模型来预测地理范围.
- 分析了森林砍伐的影响和四个未来气候场景 (2041-2060,2061-2080).
- 评估现有PA在保护灵长类物种丰富性和地理分布方面的有效性.
主要成果:
- 大多数灵长类动物在未来的气候情景下面临>90%的适合息地丧失.
- 对于10种类型,息地丧失超过98%,特别是在亚马逊.
- 目前只有8.6%的PA超过预期的物种丰富度,预计未来物种数量将下降.
结论:
- 现有的保护区不足以保护巴西临灭绝的灵长类动物免受气候变化和森林砍伐的影响.
- 显著增加PA的数量和范围对于灵长类动物的保护至关重要.
- 迫切需要采取保护行动,以确保受威胁的灵长类种群的生存能力,并防止灭绝.
相关概念视频
What is Conservation Biology?
18.3K
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.
18.3K
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
Threats to Biodiversity
22.1K
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...
22.1K
Global Climate Change
24.2K
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.
24.2K
Habitat Fragmentation
17.4K
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.
17.4K

