增加和波动的资源可用性增加了偶尔的化
Yan Sun1, Zhi-Kun Ren1,2, Heinz Müller-Schärer1,3
1College of Resources and Environment, Huazhong Agricultural University, Wuhan, China.
Ecology
|July 17, 2024
概括
像Conyza canadensis这样的侵入性植物可以通过"侵入性化",特别是增加土壤营养素来加剧入侵. 这项研究表明,在这些条件下,入侵者壮成长,而本地人则下降.
科学领域:
- 生态生态学 生态生态学
- 侵入性物种 生物学 生物学
- 植物社区动态 植物社区动态
背景情况:
- 侵入性物种可以促进其他非本地植物的建立,这种现象被称为"侵入性化".
- 增加土壤营养素的可用性往往有利于入侵物种,但其在入侵性融化中的作用尚不清楚.
研究的目的:
- 调查营养供应和波动如何影响入侵植物Conyza canadensis和其他异国植物和本地植物物种之间的相互作用.
- 为了确定营养丰富是否加剧侵袭性融化和本地物种的抑制.
主要方法:
- 进行了一个中宇宙实验,使用了八种异国植物和八种本地欧亚植物物种.
- 植物在受控营养供应 (高与低) 和波动 (稳定与波动) 的情况下,暴露于侵入性Conyza canadensis的不同密度.
主要成果:
- 科尼扎·卡纳德尼斯 (Conyza canadensis) 密度的增加加剧了对本地物种的竞争,并促进了其他异国物种的进入.
- 高度和波动的营养水平放大了对本地物种的负面影响和对其他异国物种的积极影响.
- 外来物种在高营养条件下与增加的Conyza canadensis密度相比,在本地物种上表现出显著的优势.
结论:
- 营养丰富和波动可以通过偏好外来物种而不是本地物种来驱动偶尔的融化.
- 该研究提出了"资源驱动的侵袭性融化和本地人的抑制"假设.
- 侵入性物种对资源可用性的生物加速可以促进进一步的入侵,并抑制本地植物群.
关键词:
科尼扎卡纳德尼斯 (Conyza canadensis) 是一个植物.竞争 竞争 竞争 竞争 竞争 竞争促成便利化 促进便利化侵入性外来植物物种的入侵性外来植物物种.多种物种的入侵.本地植物物种本地植物物种.更多相关视频
09:18Laser-heating and Radiance Spectrometry for the Study of Nuclear Materials in Conditions Simulating a Nuclear Power Plant Accident
Published on: December 14, 2017
10.4K
12:26Integrating Remote Sensing with Species Distribution Models; Mapping Tamarisk Invasions Using the Software for Assisted Habitat Modeling SAHM
Published on: October 11, 2016
13.3K
相关概念视频
Speciation Rates
21.1K
Overview
21.1K
Threats to Biodiversity
22.2K
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...
22.2K
Ecological Disturbance
17.0K
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.
17.0K
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
17.5K
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.
17.5K
Ecological Succession
17.2K
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...
17.2K
