野生犬和生态陷面临着亚马逊森林的气候变化和森林砍伐
Geovana Linhares de Oliveira1, Arleu Barbosa Viana-Junior2, Paulo Henrique Santos Trindade1
1Laboratório de Ecologia e Zoologia de Vertebrados - LABEV, Instituto de Ciências Biológicas Universidade Federal do Pará Belém Pará Brazil.
Ecology and evolution
|June 12, 2023
概括
生态陷威胁着亚马逊犬,气候变化可能会使息地减少91%. 这些陷是由人类的影响驱动的,它们危及物种的生存,并突出了除了仅仅保护息地之外的保护策略的必要性.
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
- 野生动物管理 野生动物管理
背景情况:
- 生态陷发生在物种由于环境变化而定居于不理想的息地时,通常是人为引起的,可能导致灭绝.
- 亚马逊雨林中的人类压力正在改变息地,创造了物种可能面临生存或生产率下降的条件.
研究的目的:
- 为了研究三个亚马逊犬物种的发生和分布动态:Atelocynus microtis,Cerdocyon thous和Spheotos venaticus.
- 在气候变化情景下分析环境值,并为这些物种预测未来的气候.
- 评估生态陷在这些类动物对息地退化和气候变化的脆弱性中的作用.
主要方法:
- 对三种犬类物种出现的环境值的分析.
- 预测每个物种未来的气候.
- 评估与人为威胁和气候变化有关的物种分布动态.
主要成果:
- 预计这三种物种都将受到气候变化的重大负面影响,巴西亚马逊地区的潜在适合息地损失高达91%.
- 亚特洛辛纳斯微型树 (Atelocynus microtis) 显示出高度依赖森林,需要保护努力和政策决策才能生存.
- 由于环境暗示的改变和适应性可塑性降低,Cerdocyon thous和Spheotos venaticus可能越来越容易受到生态陷的影响.
结论:
- 气候变化和生态陷对亚马逊犬种群构成重大未来风险,特别是C. thous和S. venaticus.
- 这项研究强调了需要在亚马逊生物多样性的保护战略中考虑生态陷理论与息地丧失一起.
- 需要采取紧急的保护行动,以减轻环境退化和气候变化对这些脆弱物种的影响.
相关概念视频
01:50Threats to Biodiversity
22.5K
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...
22.5K
02:04Conservation of Small Populations
13.2K
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...
13.2K
01:57What is Conservation Biology?
18.5K
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.
18.5K
02:31Habitat Fragmentation
17.7K
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.
17.7K
02:26Ecological Disturbance
17.2K
An ecological disturbance is a temporary disruption in the environment resulting from abiotic, biotic, or anthropogenic factors, causing a pronounced change in an ecosystem. The impact of an ecological disturbance, which can depend on its intensity, frequency, and spatial distribution, plays a significant role in shaping the species diversity within the ecosystem.
17.2K
01:41Social Traps
22.4K
Social traps are negative situations where people get caught in a direction or relationship that later proves to be unpleasant, with no easy way to back out of or avoid. The concept was orignally introduced by John Platt who applied psychology to Garrett Hardin's "Tragedy of the Commons", where in New England herd owners could let their cattle graze in the common ground. This situation seems like a good idea, but an individual could have an advantage. If they owned...
22.4K