海洋热浪在南南大西洋的潮间海洋社区转移
Ana Carolina Azevedo Mazzuco1,2, Daniela Y Gaurisas2, André Vassoler2
1UNESCO-IOC, Oostende, Belgium.
PeerJ
|March 2, 2026
概括
海洋热浪显著减少了巴西的大藻覆盖面和生物多样性.
科学领域:
- 海洋生态海洋生态学
- 气候变化影响 气候变化影响
- 海洋学 海洋学 海洋学
背景情况:
- 海洋变暖对沿海海洋生态系统构成全球威胁.
- 海洋热浪 (MHW) 是极端温度事件,严重影响海洋物种.
- 种类努力忍受,适应或从MHW中恢复过来.
研究的目的:
- 为了调查MHWs与南南大西洋潮间礁石的底层覆盖之间的关联.
- 在现场监测温度并获得远程传感数据以获得重要的海洋和生物多样性变量.
- 分析2017年12月至2022年5月关于大藻床和沿海条件的每月数据.
主要方法:
- 在现场进行温度监测.
- 利用远程传感卫星数据用于海洋和生物多样性变量.
- 收集关于潮间大藻床和沿海气象海洋学条件的月度数据.
主要成果:
- 宏藻覆盖的变化与MHW发生有很强的相关性 (>80%).
- 强烈和长时间的海藻损失造成了巨大的藻类覆盖 (38%) 的损失,并减少了盆地丰富性和多样性.
- MHWs在主导的宏藻类类 (棕色和红色藻类) 中推动了继承,在多年时间范围内恢复有限.
结论:
- 在巴西海岸线上,MHW越来越频繁.
- 延长的恢复期表明,沿海生物多样性的长期显著下降是预期的.
- 宏藻床中的组装顺序可能发生在多年的时间范围内.
相关概念视频
Global Climate Change
29.2K
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.
29.2K
Effect of Sea Water on Concrete
1.2K
Concrete exposed to seawater can undergo degradation like the dissolution of ettringite and gypsum, increasing the material's porosity and decreasing its strength. In contrast, the crystallization of salts within the concrete's pores can cause expansion, particularly above the waterline where evaporation occurs. Nonetheless, this expansion only happens when seawater, enabled by the concrete's permeability, manages to infiltrate the structure.
Concrete in areas between tide marks,...
Concrete in areas between tide marks,...
1.2K
Migration
9.0K
Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
9.0K
Primary Production
25.8K
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.
25.8K
What is Climate?
21.1K
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.
21.1K
Speciation Rates
23.1K
Overview
23.1K


