气候变化可能会扩大大型海洋生态系统的弱同步性
Vadim A Karatayev1,2,3, Stephan B Munch4,5, Tanya L Rogers4
1Department of Biology, University of Maryland, College Park, MD 20742.
概括
海洋种群的空间异质性是生态系统应对气候变化的关键. 对环境变化的不同反应可以防止广泛的人口减少,保持海洋生态系统的稳定性.
科学领域:
- 海洋生态海洋生态学
- 气候变化生物学 气候变化生物学
- 人口动态 人口动态
背景情况:
- 气候变化加剧了极端环境事件,减少了环境梯度.
- 超人口同步或缺乏同步,会影响人口稳定性和救援效应.
- 了解限制同步的因素对于预测生态系统对全球变化的反应至关重要.
研究的目的:
- 量化空间异质性在密度依赖,环境反应和环境梯度在抑制超人口同步中的作用.
- 评估这些因素对不同生态系统的海洋鱼类和无脊椎动物种群的影响.
- 预测未来气候变化情景如何影响人口同步和稳定.
主要方法:
- 利用了36种海洋物种的长期生态数据.
- 采用经验动态模型来分析人口动态.
- 密度依赖和环境反应中的量化空间异质性.
- 评估了环境梯度和非线性响应曲线的影响.
主要成果:
- 人口动态中的空间异质性在解释人口变化的过程中与环境驱动因素同样重要.
- 在加利福尼亚现行生态系统中观察到较弱的人口同步,这是由于各种物种的反应.
- 环境梯度和非线性反应限制了美国东北部的同步. 货架生态系统 货架生态系统
结论:
- 空间异质性和多样化的物种反应对于保持海洋生态系统弹性至关重要.
- 削弱环境梯度可能会增加种群同步和大规模下降,特别是在商业上重要的物种.
- 该研究为量化景观规模的弹性和确定气候变化对物种稳定性的影响提供了一个框架.
更多相关视频
05:58Author Spotlight: Advancing Coral Culture - Creating a Semi-Quantitatively Controlled Microenvironment System to Counter Current Limitations
Published on: July 21, 2023
1.7K
10:28Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information
Published on: June 13, 2020
5.8K
相关概念视频
01:50Global 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
01:16What is Climate?
18.3K
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.
18.3K
02:45Biological Clocks and Seasonal Responses
34.6K
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
34.6K
01:50Threats 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
01:17What is an Ecosystem?
39.3K
Overview
39.3K
01:00The Water Cycle
24.1K
The Earth’s hydrosphere includes all of the areas where the storage and movement of water occurs. Since water is the basis of all living processes, the cycling of water is extremely important to ecosystem dynamics.
24.1K