相关实验视频
Updated: Sep 12, 2025

05:28
Quantifying Corticolous Arthropods Using Sticky Traps
Published on: January 19, 2020
5.5K
气候和息地相对重要性的强烈上下文依赖于全国性宏观社区的变化
Emy Guilbault1, Pasi Sihvonen2, Anna Suuronen3
1Research Centre for Ecological Change, Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland.
The Journal of animal ecology
|August 5, 2025
概括
息地修改和气候变化对生物多样性产生重大影响. 我们的研究表明,这两个因素,以及物种和息地背景,推动了社区的变化,强调了综合保护战略的必要性.
科学领域:
- 生态生态学 生态生态学
- 生物多样性研究的研究.
- 环境科学环境科学
背景情况:
- 息地修改和气候变化是生物多样性丧失的主要驱动因素.
- 了解它们在大型空间尺度上的综合和相对影响至关重要,但由于数据差距和上下文依赖性而复杂.
研究的目的:
- 分析气候和息地特征对芬兰社区动态的影响.
- 评估气候与息地变化的相对重要性对物种的发生,丰富性和社区多样性.
- 研究跨功能和环境梯度的驱动效应中的上下文依赖性.
主要方法:
- 使用联合物种分布建模 (JSDM) 采用来自芬兰109个地点的23年发生率和丰度数据.
- 采用预测建模来解决时空空间数据缺口,并评估全国范围内的驱动因素的重要性.
- 应用了条件差异分区和场景分析,以探索特定环境的影响和隔离驱动因素影响.
主要成果:
- 社区的动态受到功能 (物种特征) 和环境 (息地类型) 环境的影响.
- 息地特征是物种出现的主要驱动因素,但气候和息地的重要性在区域和物种功能特征之间存在差异.
- 社区多样性的时间趋势在空间上有所不同,单一驱动器预测 (仅限于气候或息地) 不准确地代表了实现的社区动态.
结论:
- 息地组成是社区变化的关键驱动力,即使对于温度敏感的外热生物来说也是如此.
- 气候和息地对物种动态的贡献不均,需要综合方法来准确预测.
- 对气候和土地利用变化进行核算对于理解和预测未来社区变化至关重要.
相关概念视频
Threats to Biodiversity
22.9K
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...
22.9K
Habitat Fragmentation
17.9K
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.
17.9K
What is Climate?
18.8K
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.
18.8K
Keystone Species
22.4K
Measures of species biodiversity, such as richness (i.e., the number of species present) and evenness (i.e., their relative abundance), describe an ecological community’s structure. Many factors affect community structure, including abiotic factors (e.g., sunlight and nutrients), disturbances (e.g., fire or flood), species interactions (e.g., predation or competition), and chance events (e.g., foreign species invasion). Certain species—such as keystone species—also play a...
22.4K
Global Climate Change
24.8K
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.
24.8K
Ecological Disturbance
17.5K
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.
17.5K

