全球环境驱动因素塑造了中纪新 Selachian 多样性,并确定了现代的保护优先事项
Manuel Andreas Staggl1,2, Eduardo Villalobos-Segura3, Michael J Benton4
1Department of Palaeontology, Faculty of Earth Sciences, Geography and Astronomy, Josef-Holaubek-Platz 2, Vienna, 1090, Austria. staggl.95@gmail.com.
Scientific reports
|November 20, 2025
概括
鱼和鱼 (Neoselachii) 显示,KPG灭绝的影响比预期的要轻,随后是Eocene辐射. 浅浅的息地推动了多样化,影响了现代鱼和鱼的进化.
科学领域:
- 古生物学的古生物学
- 海洋生物学 海洋生物学
- 宏观进化是如何发生的
背景情况:
- 鱼,鱼和灭绝的祖先) 是生态上重要的海洋脊椎动物.
- 由于对环境变化的反应,Neoselachii的深度多样性和周转模式未得到充分研究.
- 以前的研究集中在分类学丰富性上,忽视了动物组成和生态策略,限制了对Neoselachian弹性的理解.
研究的目的:
- 分析古老时代Neoselachian属多样性和动物组成的变化.
- 调查大纪环境变化对新西拉基人多样性和周转的影响.
- 了解Neoselachians的宏观进化弹性和脆弱性.
主要方法:
- 利用Neoselachii. 的高分辨率化石发生数据.
- 进行了中生代物种多样性和动物组成的采样标准化分析.
- 将生态和环境变量集成到分析中.
主要成果:
- 证明KPG大灭绝对Neoselachians的影响比以前认为的要少.
- 记录了Neoselachians的显著辐射,最终达到一个Eocene多样性峰值.
- 鉴定了米奥世时期的两个明显的动物变化,浅浅的,异质的息地是主要的多样化驱动因素.
结论:
- 新西拉基的多样性和组成是由中生代的环境变化塑造的,各个群体的反应各不相同.
- 浅,异质的息地在Neoselachian多样化中发挥了关键作用.
- 这些发现为评估当前Neoselachian脆弱性和告知保护战略提供了背景.
相关概念视频
01:50Threats to Biodiversity
26.4K
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...
26.4K
02:35What is Evolutionary History?
42.8K
Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
42.8K
01:50Global Climate Change
28.6K
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.
28.6K
01:43Sustainable Development
14.7K
As the human population continues to grow and use resources, we must be mindful of our planet’s natural limits. Sustainable development provides a pathway to maintain and improve human life now while also ensuring that future generations will have the resources that they need. The long-term success of sustainability efforts rests on understanding the interplay between human actions and ecological systems.
14.7K
02:56The Fossil Record
27.0K
The fossil record documents only a small fraction of all organisms that have ever inhabited Earth. Fossilization is a rare process, and most organisms never become fossils. Moreover, the fossil record only exhibits fossils that have been discovered. Nevertheless, sedimentary rock fossils of long-lived, abundant, hard-bodied organisms dominate the fossil record. These fossils offer valuable information, such as an organism's physical form, behavior, and age. Studying the fossil record helps...
27.0K
01:57What is Conservation Biology?
23.9K
Conservation biology is a scientific field that focuses on the preservation of biodiversity in order to protect ecosystems while meeting the needs of the human population. Humans require properly functioning ecosystems to maintain our supply of natural resources, including food, medicines, and building materials.
23.9K