Life in the end-Permian dead zone
The fossil record of land plants is an obvious source of information on the dynamics of mass extinctions in the geological past. In conjunction with the end-Permian ecological crisis, ≈250 million years ago, palynological data from East Greenland reveal some unanticipated patterns. We document the s...
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ftpubmed:oai:pubmedcentral.nih.gov:35436 2023-05-15T16:03:41+02:00 Life in the end-Permian dead zone Looy, Cindy V. Twitchett, Richard J. Dilcher, David L. Van Konijnenburg-Van Cittert, Johanna H. A. Visscher, Henk 2001-07-03 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC35436 http://www.ncbi.nlm.nih.gov/pubmed/11427710 https://doi.org/10.1073/pnas.131218098 en eng The National Academy of Sciences http://www.ncbi.nlm.nih.gov/pmc/articles/PMC35436 http://www.ncbi.nlm.nih.gov/pubmed/11427710 http://dx.doi.org/10.1073/pnas.131218098 Copyright © 2001, The National Academy of Sciences Biological Sciences Text 2001 ftpubmed https://doi.org/10.1073/pnas.131218098 2013-08-29T07:38:32Z The fossil record of land plants is an obvious source of information on the dynamics of mass extinctions in the geological past. In conjunction with the end-Permian ecological crisis, ≈250 million years ago, palynological data from East Greenland reveal some unanticipated patterns. We document the significant time lag between terrestrial ecosystem collapse and selective extinction among characteristic Late Permian plants. Furthermore, ecological crisis resulted in an initial increase in plant diversity, instead of a decrease. Paradoxically, these floral patterns correspond to a “dead zone” in the end-Permian faunal record, characterized by a paucity of marine invertebrate megafossils. The time-delayed, end-Permian plant extinctions resemble modeled “extinction debt” responses of multispecies metapopulations to progressive habitat destruction. Text East Greenland Greenland PubMed Central (PMC) Greenland Proceedings of the National Academy of Sciences 98 14 7879 7883 |
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PubMed Central (PMC) |
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ftpubmed |
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English |
topic |
Biological Sciences |
spellingShingle |
Biological Sciences Looy, Cindy V. Twitchett, Richard J. Dilcher, David L. Van Konijnenburg-Van Cittert, Johanna H. A. Visscher, Henk Life in the end-Permian dead zone |
topic_facet |
Biological Sciences |
description |
The fossil record of land plants is an obvious source of information on the dynamics of mass extinctions in the geological past. In conjunction with the end-Permian ecological crisis, ≈250 million years ago, palynological data from East Greenland reveal some unanticipated patterns. We document the significant time lag between terrestrial ecosystem collapse and selective extinction among characteristic Late Permian plants. Furthermore, ecological crisis resulted in an initial increase in plant diversity, instead of a decrease. Paradoxically, these floral patterns correspond to a “dead zone” in the end-Permian faunal record, characterized by a paucity of marine invertebrate megafossils. The time-delayed, end-Permian plant extinctions resemble modeled “extinction debt” responses of multispecies metapopulations to progressive habitat destruction. |
format |
Text |
author |
Looy, Cindy V. Twitchett, Richard J. Dilcher, David L. Van Konijnenburg-Van Cittert, Johanna H. A. Visscher, Henk |
author_facet |
Looy, Cindy V. Twitchett, Richard J. Dilcher, David L. Van Konijnenburg-Van Cittert, Johanna H. A. Visscher, Henk |
author_sort |
Looy, Cindy V. |
title |
Life in the end-Permian dead zone |
title_short |
Life in the end-Permian dead zone |
title_full |
Life in the end-Permian dead zone |
title_fullStr |
Life in the end-Permian dead zone |
title_full_unstemmed |
Life in the end-Permian dead zone |
title_sort |
life in the end-permian dead zone |
publisher |
The National Academy of Sciences |
publishDate |
2001 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC35436 http://www.ncbi.nlm.nih.gov/pubmed/11427710 https://doi.org/10.1073/pnas.131218098 |
geographic |
Greenland |
geographic_facet |
Greenland |
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East Greenland Greenland |
genre_facet |
East Greenland Greenland |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC35436 http://www.ncbi.nlm.nih.gov/pubmed/11427710 http://dx.doi.org/10.1073/pnas.131218098 |
op_rights |
Copyright © 2001, The National Academy of Sciences |
op_doi |
https://doi.org/10.1073/pnas.131218098 |
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Proceedings of the National Academy of Sciences |
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98 |
container_issue |
14 |
container_start_page |
7879 |
op_container_end_page |
7883 |
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1766399387031830528 |