较温和的冬季会改变来自喜马拉雅山脉的状的结损伤模式
Fiona Ruth Worthy1,2,3, Stefanie D Goldberg4,5, Vinodhini Thiyagaraja6
1Key Laboratory of Phytochemistry and Natural Medicines, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, Yunnan, China. fiona.worthy@outlook.com.
Scientific reports
|November 18, 2024
概括
跨喜马拉雅鱼面临着不断变化的冬季条件. 冰解周期比连续结更严重地损害了水,在物种和海拔上具有不同的弹性,影响未来的分布.
科学领域:
- 生态生态学 生态生态学
- 低温生物学 低温生物学
- 菌类学 菌类学是指菌类学.
背景情况:
- 超喜马拉雅冬季预计将变得较温和,改变菌群体的环境压力因素.
- 高度和南极鱼在干燥时表现出冷性,但在潮湿或重复融事件时易受结的影响.
- 在高海拔,中度的鱼中,低温抵抗机制仍然不太清楚.
研究的目的:
- 为了研究高海拔,中度的超喜马拉雅地区的化真菌的冷性.
- 评估不同结条件 (连续与结解周期) 和水分水平对鱼生存的影响.
- 了解气候变化引起的冬季条件的变化如何影响的分布.
主要方法:
- 在跨喜马拉雅山的三个海拔梯度 (4000米,3400米,2400米) 收集了来自9种植物物种的鱼.
- 在受控的实验室条件下,鱼受控制,模拟在不同水分水平下连续结 (-18°C,-36°C) 和冷-解周期.
- 通过叶绿素降解和降低叶绿素含量评估细胞损伤.
主要成果:
- 所有经过测试的干都经历了一定程度的损伤.
- 与干相比,冷的湿呈现出明显更大的叶绿素降解和更低的叶绿素含量.
- 结解周期比连续结引起的损害更大,易感性没有明显的升高趋势.
- 多利科斯尼亚龙吉斯玛 (Dolichousnea longissima) (4000m) 和乌斯尼亚佛罗里达 (Usnea florida) (2400m) 显示出对融周期的抗性最高,而来自较冷地区的物种则更适应极端结.
结论:
- 的冷阻力在物种之间有所不同,并受到水分含量和冷制度的影响.
- 预测较温和的跨喜马拉雅冬季,冷解周期较少,可能有利于中高地的扩张.
- 在未来的气候情景下,高海拔可能面临更大的竞争压力和热应激.
相关概念视频
Introduction to Plant Diversity
44.0K
From Water to Land
44.0K
Responses to Heat and Cold Stress
13.4K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.4K
Global 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
Decreased Body Temperature
602
A decreased body temperature can occur in patients with hypothermia and frostbite. Heat loss with extended cold exposure overpowers the body's ability to create heat, resulting in hypothermia. Core temperature readings help classify hypothermia. Mild hypothermia is temperatures between 32 °C (89.6 °F) and 35°C (95 °F) and is caused by impaired thermoregulation. Moderate hypothermia is temperatures between 28 C (82.4 °F) and 32 °C (89.6 °F) caused by...
602
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
Factors Influencing Microbial Growth: Temperature
1
Microorganisms display remarkable adaptations, enabling them to thrive in diverse ecological niches across a wide range of temperatures. Temperature profoundly influences microbial growth by affecting enzymatic activity, membrane fluidity, and other cellular processes.Each microorganism operates within a specific temperature range defined by three cardinal points: minimum, optimum, and maximum. Below the minimum temperature, membranes lose fluidity, halting transport processes. Above the...
1


