从行为到复杂的社区:在鱼类诱导的营养级联中对人为噪音的弹性
Emilie Rojas1, Mélanie Gouret1, Simon Agostini2
1Equipe Neuro-Ethologie Sensorielle (ENES), Centre de Recherche en Neurosciences de Lyon (CRNL), INSERM UMRS 1028, CNRS UMR 5292, Université Claude Bernard Lyon 1, Université Jean Monnet - Saint-Etienne, Saint-Etienne, France.
Environmental pollution (Barking, Essex : 1987)
|August 14, 2023
概括
机动艇噪音是人类的压力因素,令人惊的是,尽管它影响了鱼类的养行为,但它并没有改变淡水浮游生物群落. 这表明自上而下的生态控制可以抵御慢性噪音污染.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 水生生物学 水生生物学
背景情况:
- 人为制造的声音,如摩托艇噪音,是广泛存在的环境压力因素.
- 虽然已知个体动物对噪声的反应,但对其对复杂生态社区的影响,特别是对淡水系统的影响,理解较少.
- 淡水生态系统是重要的生物多样性热点,在噪音污染研究中经常被忽视.
研究的目的:
- 为了研究慢性机动艇噪音对淡水浮游生物社区结构的影响.
- 评估噪音暴露是否会改变浮游生物鱼类 () 的食行为.
- 为了确定个体鱼类的行为变化是否通过热带级流转化为社区层面的影响.
主要方法:
- 一个中宇宙实验使淡水群体 (植物浮游生物,动物浮游生物,) 暴露在慢性机动船噪音中.
- 一项微观研究研究了在不同噪音条件下的食行为.
- 通过观察虫掠食导致的浮游生物种群变化,分析了热带级联动态.
主要成果:
- 暴露于慢性噪音的在没有习惯的情况下显示了持续的养行为变化.
- 观察到热带级联效应:的掠食减少了放牧动物浮游生物,有利于绿藻.
- 尽管的行为发生了变化,但在噪音和无噪音的中宇宙之间没有发现浮游生物社区动态的显著差异.
结论:
- 对浮游生物群落的自上而下的结构影响似乎对慢性机动船噪音有弹性.
- 对噪音的个人反应可能并不总是扩大到社区层面的影响.
- 将环境压力因素的影响从单个有机体扩展到复杂的生态系统需要仔细考虑生态相互作用.
相关概念视频
Trophic Efficiency
20.7K
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.
20.7K
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
Threats to Biodiversity
22.4K
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...
22.4K
Trophic Levels
31.0K
All organisms in an ecosystem occupy a trophic level in the food chain. The lowest level consists of primary producers, which synthesize their food from either solar or chemical energy. Each subsequent level obtains energy from the levels below. Detritivores can occupy any of the levels above primary producers.
31.0K
Conservation of Declining Populations
9.7K
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.
9.7K
Predator-Prey Interactions
16.3K
Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
16.3K


