相关实验视频
Updated: Jun 6, 2025

03:45
A Rapid Method to Confine and Safely Handle Bees in the Field
Published on: August 23, 2024
736
预测全球变化对蜜蜂生物多样性热点的影响
Mark A Buckner1, Steven T Hoge1, Bryan N Danforth1
1Department of Entomology Cornell University Ithaca New York USA.
Ecology and evolution
|December 2, 2024
概括
沙漠蜜蜂的生物多样性面临着发展和气候变化的威胁. 保护区可能会改变物种丰富性,较高的海拔地区可能会增加蜜蜂,而较低的地区则会减少蜜蜂.
科学领域:
- 生态与保护生物学 生态与保护生物学
- 生物多样性研究的研究.
- 气候变化影响气候变化的影响.
背景情况:
- 莫哈维和索诺拉沙漠是蜜蜂生物多样性的关键全球热点.
- 这些地区因城市化,公用事业规模太阳能 (USSE) 开发和气候变化而面临着严重的息地退化.
- 孤独的蜜蜂多样性对于授粉至关重要,在土地管理中经常被忽视.
研究的目的:
- 评估莫哈维沙漠和索诺拉沙漠当前和未来的蜜蜂多样性分布.
- 评估保护区在全球变化下保护蜜蜂物种丰富性的有效性.
- 预测气候变化和USSE发展对蜜蜂种群的影响.
主要方法:
- 用于148种蜜蜂的联合物种分布模型 (JSDMs).
- 在四个全球变化情景 (1971-2050) 下,物种分布,发生区域和丰度的预测变化.
- 评估了USSE发展和气候变化对保护区适宜性的影响所带来的威胁.
主要成果:
- 蜜蜂物种丰富度的变化不均;较低的保护区可能会失去多达5.8个物种,而较高的地区可能会增加多达7.8个物种.
- 与研究区域相比,针对USSE发展的地区的平均物种丰富度较高.
- 到2050年,由于气候变化,USSE区域可能仅因气候变化而减少多达8.0个蜜蜂物种.
结论:
- 全球变化和USSE发展对沙漠蜜蜂的生物多样性构成重大风险.
- 保护区需要战略规划,考虑到物种分布的高度变化.
- 在土地管理决策中,JSDM为将数据有限的昆虫物种纳入土地管理决策提供了有价值的工具.
相关概念视频
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
Pollination and Flower Structure
63.4K
Flowers are the reproductive, seed-producing structures of angiosperms. Typically, flowers consist of sepals, petals, stamens, and carpels. Sepals and petals are the vegetative flower organs. Stamens and carpels are the reproductive organs.
63.4K
What is Climate?
18.4K
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.
18.4K
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
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
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

