河流的分类学和功能性社区组成在土地使用变化下的变化
Kai Chen1,2, Stephen R Midway3, Brandon K Peoples4
1State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China.
Ecology
|August 23, 2023
概括
河流鱼类和昆虫群体的功能组成变化比分类学变化更早地显示出土地利用变化的警告信号. 这些功能变化在地理上更为一致,为保护管理提供了关键的见解.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 保护生物学 保护生物学
背景情况:
- 土地利用的强化改变了全球的植物和动物群落.
- 功能特征可能比物种分类更早地表明环境变化.
- 了解跨种类和区域的这些反应至关重要.
研究的目的:
- 为了测试功能组成的变化是否在土地使用变化下的分类学变化之前.
- 为了比较河流鱼和昆虫群体的分类学和功能反应.
- 评估这些响应在美国的地理一致性.
主要方法:
- 分析了美国土地使用梯度上的鱼类和昆虫群体的广泛数据集.
- 利用梯度森林模型来确定值反应.
- 在城市和农业用地使用下比较分类学和功能组成的变化.
主要成果:
- 在分类学和功能性社区组成中观察到突然的值变化.
- 对于鱼类和昆虫来说,功能组合始终显示了比分类组合更低的土地利用门.
- 对土地使用变化的功能反应在地理上比分类学反应更一致.
结论:
- 基于特征的指标提供了土地利用对河流生态系统影响的早期警告信号.
- 功能组合转移提供了更可靠,地理上一致的早期预警值.
- 调查结果强调了基于特征的方法对土地利用管理和政策的重要性.
相关概念视频
Ecological Disturbance
17.1K
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.
17.1K
What is an Ecosystem?
39.8K
Overview
39.8K
Bioremediation
18.9K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.9K
Design Example: Analyzing Capacity Contours for Flood Risk Assessment
70
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
70
Responses to Drought and Flooding
10.7K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
10.7K
Ecological Succession
17.3K
Ecological succession is influenced by the processes of facilitation, inhibition, and toleration. Facilitation occurs when early successional species create more favorable ecological conditions for subsequent species, such as enhanced nutrient, water, or light availability. In contrast, inhibition happens when early successional species create unfavorable ecological conditions for potential successive species, such as limiting resource availability. In some cases, later successional species...
17.3K


