在大规模死亡事件发生后,地中海沿岸地特征多样性的脆弱性
J Carlot1, C Galobart2, D Gómez-Gras3,4
1Laboratoire d'Océanographie de Villefranche, Sorbonne Université, CNRS, Villefranche-sur-mer, France. jay.crlt02@gmail.com.
Nature communications
|February 12, 2025
概括
海洋热浪导致地中海盆地物种显著的功能特征丧失. 脆弱的化,较大的,生长缓慢的物种面临极端的死亡率,冒着快速生态系统转变的风险.
科学领域:
- 海洋生物学 海洋生物学
- 生态生态学 生态生态学
- 气候变化科学 气候变化科学
背景情况:
- 海洋生态系统面临着全球变化的前所未有的挑战.
- 地中海特别容易受到各种环境压力因素的影响.
- 了解物种的功能特征对于预测生态系统反应至关重要.
研究的目的:
- 评估受大规模死亡事件 (MMEs) 影响的地中海盆地物种的特征脆弱性.
- 为了确定特定的生态特征和功能实体 (FE),最容易受到MME的感染.
- 量化MMEs对功能性特征多样性随时间推移的影响.
主要方法:
- 在地中海海域对中小企业数据集 (1986-2020) 的分析.
- 对389种盆地物种的十种生态特征的研究.
- 根据共享的特征值识别和分析了228个功能实体 (FE).
主要成果:
- 在228个FE中,有55个受MME影响,其中特定的特征类别显示出更高的脆弱性.
- 在超过一半的死亡记录中,增长缓慢 (树状,巨型) 的化较大的物种受到严重影响.
- 29个FE经历了极端的死亡率,在35年内,全球特征体积脆弱性增加了高达19.1%.
结论:
- 大规模死亡事件对地中海盆地生态系统的功能性特征多样性产生重大影响.
- 特定的功能特征,特别是化和较大,生长缓慢的物种的特征,是高度脆弱的.
- 地中海面临着由于MME引起的特征丧失而快速生态转变的风险.
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
Trophic Efficiency
20.3K
Trophic level transfer efficiency (TLTE) is a measure of the total energy transfer from one trophic level to the next. Due to extensive energy loss as metabolic heat, an average of only 10% of the original energy obtained is passed on to the next level. This pattern of energy loss severely limits the possible number of trophic levels in a food chain.
20.3K
What is Biodiversity?
27.1K
Biodiversity describes the variety of living things at multiple organizational levels: genetic, species and ecosystem diversity. Species diversity includes all branches of the evolutionary tree from single-celled prokaryotic organisms, bacteria, and archaea, to the eukaryotic kingdoms: plants; animals; fungi; and protists. To date, there have been about 1.75 million species identified, and new species are discovered every week.
27.1K
Primary Production
23.5K
The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.
23.5K
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
Keystone Species
21.5K
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...
21.5K


