小柯机器人

西班牙海洋科学研究所Pedro Cermeño、Carmen García-Comas等研究人员合作揭示，灭绝后的显生宙海洋和生物多样性热点的恢复。这一研究成果于2022年7月13日在线发表在国际学术期刊《自然》上。

研究人员提出了一个区域性的多样化模型，它再现了海洋无脊椎动物的全球多样性在强加大规模灭绝后的主要显生宙趋势。研究人员发现，全球多样性的动态最好由一个多样化模型来描述，该模型在对数函数的指数增长系统中广泛运行。对多样性与承载能力之比的空间解析显示，在整个显生宙，全球淹没的大陆面积中，只有不到2%的面积表现出接近生态饱和的多样性水平。研究人员将中生代晚期和新生代期间全球多样性的总体增加归因于，在地球系统长期稳定和大陆最大分裂条件下多样性热点的发展。研究人员称之为"多样性热点假说"，它是作为中生代海洋革命引领这一宏观进化趋势假说的一个非相互排斥的替代方案而提出的。

据悉，海洋无脊椎动物的化石记录长期以来助长了关于海洋中的全球多样性是否存在限制的争论。生态学理论认为，随着多样性的增长和生态位的填补，生物相互作用的加强会对多样性造成限制。然而，在演化过程中，生物相互作用对多样性增长的制约程度仍然是一个开放的问题。

附：英文原文

Title: Post-extinction recovery of the Phanerozoic oceans and biodiversity hotspots

Author: Cermeo, Pedro, Garca-Comas, Carmen, Pohl, Alexandre, Williams, Simon, Benton, Michael J., Chaudhary, Chhaya, Le Gland, Guillaume, Mller, R. Dietmar, Ridgwell, Andy, Vallina, Sergio M.

Issue&Volume: 2022-07-13

Abstract: The fossil record of marine invertebrates has long fuelled the debate as to whether or not there are limits to global diversity in the sea1,2,3,4,5. Ecological theory states that, as diversity grows and ecological niches are filled, the strengthening of biological interactions imposes limits on diversity6,7. However, the extent to which biological interactions have constrained the growth of diversity over evolutionary time remains an open question1,2,3,4,5,8,9,10,11. Here we present a regional diversification model that reproduces the main Phanerozoic eon trends in the global diversity of marine invertebrates after imposing mass extinctions. We find that the dynamics of global diversity are best described by a diversification model that operates widely within the exponential growth regime of a logistic function. A spatially resolved analysis of the ratio of diversity to carrying capacity reveals that less than 2% of the global flooded continental area throughout the Phanerozoic exhibits diversity levels approaching ecological saturation. We attribute the overall increase in global diversity during the Late Mesozoic and Cenozoic eras to the development of diversity hotspots under prolonged conditions of Earth system stability and maximum continental fragmentation. We call this the ‘diversity hotspots hypothesis’, which we propose as a non-mutually exclusive alternative to the hypothesis that the Mesozoic marine revolution led this macroevolutionary trend12,13.

DOI: 10.1038/s41586-022-04932-6

Source: https://www.nature.com/articles/s41586-022-04932-6

Nature：《自然》，创刊于1869年。隶属于施普林格·自然出版集团，最新IF：69.504
官方网址：http://www.nature.com/
投稿链接：http://www.nature.com/authors/submit_manuscript.html