Late Cenozoic evolution of the latitudinal diversity gradient
Late Cenozoic evolution of the latitudinal diversity gradient
复制标题
晚新生代纬度多样性梯度演化
DOI：
10.1111/jbi.14620
复制
发表时间：
2023
影响因子：
3.9
通讯作者：
Crame J
中科院分区：
文献类型：
--
作者：
Crame J
目的新生代晚期极地海洋生态系统的繁荣，就在气温达到最低水平的时候，似乎总是反常的。这样的观察加上越来越多的分子系统发育证据表明，一些极地类群辐射在非常高的进化速率。典型的纬度多样性梯度（LDG）可能不会得到支持的进化速率的平行梯度。这项研究提供了一个审查这个关键的question.LocationA各种极地热带比较，与一些强调南大洋。TaxaBoth海洋和陆地类群使用，与一些强调海洋Mollusca.MethodsHigh -低纬度比较进化率在过去的66百万年使用两种方法：来自分子生物学的速率，和来自化石记录的速率。对于前者，这些数据取自各种海洋和陆地类群，对于后者，使用了海洋软体动物的优秀化石记录。66 Ma以后），有强有力的古生物学证据表明，全球LDG以传统的方式发展，热带地区的起源率高于两极。然而，在新生代后半期，当高纬度和极地地区的起源率增加时，似乎发生了显著的变化。现代纬度多样性梯度可能是一个化石的功能，形成于早期Cenozoic.Main ConclusionsAs的热带以外的地区扩大通过新生代，他们提供了越来越多的生态机会，各种各样的海洋和陆地类群。极地地区明显较低的温度显然不会阻碍磷虾生态系统等壮观的进化辐射。
AimThe Late Cenozoic flourishing of polar marine ecosystems, just when temperatures were reaching their lowest levels, has always seemed anomalous. Such an observation is coupled with an increasing volume of molecular phylogenetic evidence to indicate that some polar taxa radiated at exceptionally high evolutionary rates. The canonical latitudinal diversity gradient (LDG) may not be underpinned by a parallel gradient in evolutionary rates. This study provides a review of this critical question.LocationA variety of polar – tropical comparisons are made, with some emphasis on the Southern Ocean.TaxaBoth marine and terrestrial taxa are used, with some emphasis on marine Mollusca.MethodsHigh – low latitude comparisons of evolutionary rates over the last 66 Myr are made using two approaches: rates derived from molecular phylogenies, and rates derived from the fossil record. For the former of these data are taken from various marine and terrestrial taxa, and for the latter use is made of the excellent fossil record of marine Mollusca.ResultsFor approximately the first half of the Cenozoic era (i.e., 66 Ma onwards) there is strong palaeontological evidence to suggest that the global LDG developed in a conventional way, with higher rates of origination in the tropics than at the poles. However, there then appears to have been a marked change in the latter half of the Cenozoic when origination rates increased in the high‐latitude and polar regions. The modern latitudinal diversity gradient may be a fossil feature that formed in the Early Cenozoic.Main ConclusionsAs the extra‐tropical regions expanded through the Cenozoic they provided increasingly more ecological opportunities for a wide variety of marine and terrestrial taxa. Substantially lower temperatures in the polar regions were clearly not an obstacle to spectacular evolutionary radiations such as that based on the krill ecosystem.
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影响因子：
3.9
作者：
Brown JH
通讯作者：
Brown JH
影响因子：
3.7
作者：
Crame JA;Beu AG;Ineson JR;Francis JE;Whittle RJ;Bowman VC
通讯作者：
Bowman VC
影响因子：
2.9
作者：
Jablonski, David;Huang, Shan;Valentine, James W.
通讯作者：
Valentine, James W.
多样性热点：物种形成冷点？
影响因子：
56.9
作者：
H. Morlon
通讯作者：
H. Morlon
来自西南极洲乔治王岛 Vauréal 峰低头层（渐新世波罗涅斯湾组）的无脊椎动物
影响因子：
1.6
作者：
Fernanda Quaglio;L. Anelli;P. R. Santos;J. A. J. Perinotto;A. Rocha
通讯作者：
A. Rocha