delayed resurgence of equatorial forests after the Permian-Triassic ecologic crisis
In conjunction with the Permian-Triassic ecologic crisis approximately equal to 250 million years ago, massive dieback of coniferous vegetation resulted in a degradation of terrestrial ecosystems in Europe. A 4- to 5-million-year period of lycopsid dominance followed, and renewed proliferation of co...
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| Veröffentlicht in: | Proceedings of the National Academy of Sciences - PNAS 1999-11, Vol.96 (24), p.13857-13862 |
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| container_title | Proceedings of the National Academy of Sciences - PNAS |
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| creator | Looy, C.V Brugman, W.A Dilcher, D.L Visscher, H |
| description | In conjunction with the Permian-Triassic ecologic crisis approximately equal to 250 million years ago, massive dieback of coniferous vegetation resulted in a degradation of terrestrial ecosystems in Europe. A 4- to 5-million-year period of lycopsid dominance followed, and renewed proliferation of conifers did not occur before the transition between Early and Middle Triassic. We document this delayed re-establishment of equatorial forests on the basis of palynological data. The reconstructed pattern of vegetational change suggests that habitat restoration, migration, and evolutionary processes acted synergistically, setting the stage for successional replacement of lycopsid dominants by conifers within a period of approximately equal to 0.5 million years. |
| doi_str_mv | 10.1073/pnas.96.24.13857 |
| format | Article |
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A 4- to 5-million-year period of lycopsid dominance followed, and renewed proliferation of conifers did not occur before the transition between Early and Middle Triassic. We document this delayed re-establishment of equatorial forests on the basis of palynological data. 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A 4- to 5-million-year period of lycopsid dominance followed, and renewed proliferation of conifers did not occur before the transition between Early and Middle Triassic. We document this delayed re-establishment of equatorial forests on the basis of palynological data. The reconstructed pattern of vegetational change suggests that habitat restoration, migration, and evolutionary processes acted synergistically, setting the stage for successional replacement of lycopsid dominants by conifers within a period of approximately equal to 0.5 million years.</abstract><cop>United States</cop><pub>National Academy of Sciences of the United States of America</pub><pmid>10570163</pmid><doi>10.1073/pnas.96.24.13857</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| source | MEDLINE; Jstor Complete Legacy; PubMed Central; Alma/SFX Local Collection; Free Full-Text Journals in Chemistry |
| subjects | Biological Sciences botanical composition Coniferales Coniferous forests Conifers ecological succession Ecology extinction Forest ecology forest trees Forests Gymnosperms Lycopodiaceae Lycopsida Marine ecology Middle Triassic epoch natural regeneration paleoecology Palynology Pinopsida Pollen Prehistoric era Spores Trees Vegetation |
| title | delayed resurgence of equatorial forests after the Permian-Triassic ecologic crisis |
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