The ghost of ice ages past: Impact of Last Glacial Maximum landscapes on modern biodiversity

IF 4.6 2区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

iScience Pub Date : 2024-10-28 DOI:10.1016/j.isci.2024.111272

Jeffrey C. Nekola , Jan Divíšek , Michal Horsák

引用次数: 0

Abstract

Modeled modern and Last Glacial Maximum (LGM) climate ranges for 47 genetically confirmed small Holarctic land snails documented profound landscape dynamism over the last 21,000 years. Following deglaciation, range areas tended to increase by 50% while isolating barrier widths were cut in half. At the same time, the nature of isolating barriers underwent profound change, with the North American continental ice sheet becoming as important in the LGM as the Atlantic Ocean is today in separating Nearctic and Palearctic faunas. Because appropriate modern climate occurs for these species throughout the Holarctic, with no clear barriers being present—especially for such efficient passive dispersers—the current >90% turnover observed between Eurasian and North American species pools appears at least in part related to the LGM landscape. Understanding current and predicting potential future biodiversity patterns thus requires consideration of the landscape template across at least 15,000 years time scales.

Abstract Image

查看原文本刊更多论文

过去冰河时代的幽灵末次冰川极盛时期地貌对现代生物多样性的影响

47 种经基因确认的全北极陆地小蜗牛的现代和末次冰川极盛时期（LGM）气候范围模型记录了过去 21,000 年间地貌的巨大变化。在冰川退化之后，分布区的面积增加了 50%，而隔离屏障的宽度却减少了一半。与此同时，隔离屏障的性质也发生了深刻的变化，北美大陆冰盖在远古时期的重要性不亚于今天大西洋在分隔近地动物群和古北动物群方面的重要性。由于这些物种适宜的现代气候出现在整个全北极地区，没有明显的屏障，特别是对于这种高效的被动扩散者来说，目前在欧亚和北美物种库之间观察到的90%的更替率似乎至少在一定程度上与LGM地貌有关。因此，要了解当前和预测未来潜在的生物多样性模式，需要考虑至少 15000 年时间尺度上的地貌模板。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

iScience Multidisciplinary-Multidisciplinary

CiteScore

7.20

自引率

1.70%

发文量

1972

审稿时长

6 weeks

期刊介绍： Science has many big remaining questions. To address them, we will need to work collaboratively and across disciplines. The goal of iScience is to help fuel that type of interdisciplinary thinking. iScience is a new open-access journal from Cell Press that provides a platform for original research in the life, physical, and earth sciences. The primary criterion for publication in iScience is a significant contribution to a relevant field combined with robust results and underlying methodology. The advances appearing in iScience include both fundamental and applied investigations across this interdisciplinary range of topic areas. To support transparency in scientific investigation, we are happy to consider replication studies and papers that describe negative results. We know you want your work to be published quickly and to be widely visible within your community and beyond. With the strong international reputation of Cell Press behind it, publication in iScience will help your work garner the attention and recognition it merits. Like all Cell Press journals, iScience prioritizes rapid publication. Our editorial team pays special attention to high-quality author service and to efficient, clear-cut decisions based on the information available within the manuscript. iScience taps into the expertise across Cell Press journals and selected partners to inform our editorial decisions and help publish your science in a timely and seamless way.