Deep drilling reveals massive shifts in evolutionary dynamics after formation of ancient ecosystem

Wilke, Thomas; Hauffe, Torsten; Jovanovska, Elena; Cvetkoska, Aleksandra; Donders, Timme; Ekschmitt, Klemens; Francke, Alexander; Lacey, Jack H.; Levkov, Zlatko; Marshall, Charles R.; Neubauer, Thomas A.; Silvestro, Daniele; Stelbrink, Björn; Vogel, Hendrik; Albrecht, Christian; Holtvoeth, Jens; Krastel, Sebastian; Leicher, Niklas; Leng, Melanie J.; Lindhorst, Katja; ... (2020). Deep drilling reveals massive shifts in evolutionary dynamics after formation of ancient ecosystem. Science Advances, 6(40), eabb2943. American Association for the Advancement of Science 10.1126/sciadv.abb2943

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The scarcity of high-resolution empirical data directly tracking diversity over time limits our understanding of speciation and extinction dynamics and the drivers of rate changes. Here, we analyze a continuous species-level fossil record of endemic diatoms from ancient Lake Ohrid, along with environmental and climate indicator time series since lake formation 1.36 million years (Ma) ago. We show that speciation and extinction rates nearly simultaneously decreased in the environmentally dynamic phase after ecosystem formation and stabilized after deep-water conditions established in Lake Ohrid. As the lake deepens, we also see a switch in the macroevolutionary trade-off, resulting in a transition from a volatile assemblage of short-lived endemic species to a stable community of long-lived species. Our results emphasize the importance of the interplay between environmental/climate change, ecosystem stability, and environmental limits to diversity for diversification processes. The study also provides a new understanding of evolutionary dynamics in long-lived ecosystems.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Geological Sciences
10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR)

UniBE Contributor:

Vogel, Hendrik

Subjects:

500 Science > 550 Earth sciences & geology
500 Science > 560 Fossils & prehistoric life
500 Science > 570 Life sciences; biology
500 Science > 580 Plants (Botany)

ISSN:

2375-2548

Publisher:

American Association for the Advancement of Science

Language:

English

Submitter:

Hendrik Vogel

Date Deposited:

01 Oct 2020 10:38

Last Modified:

04 Oct 2020 03:17

Publisher DOI:

10.1126/sciadv.abb2943

BORIS DOI:

10.7892/boris.146770

URI:

https://boris.unibe.ch/id/eprint/146770

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