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Polar wildfires and...
Polar wildfires and conifer serotiny during the Cretaceous globalhothouse
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- Mays, Chris, 1983- (författare)
- Naturhistoriska riksmuseet,Enheten för paleobiologi,Monash University
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- Cantrill, David (författare)
- Royal Botanic Gardens Victoria, Private Bag 2000, South Yarra, VIC 3141, Australia
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- Bevitt, Joseph J. (författare)
- Australian Nuclear Science and Technology Organisation, Lucas Heights, NSW 2234, Australia
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(creator_code:org_t)
- Boulder : Geological Society of America, 2017
- 2017
- Engelska.
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Ingår i: Geology. - Boulder : Geological Society of America. - 0091-7613 .- 1943-2682. ; 45:12, s. 1119-1122
- Relaterad länk:
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https://gsw.silverch...
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visa fler...
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https://nrm.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Several highly effective fire-adaptive traits first evolved among modern plants duringthe mid-Cretaceous, in response to the widespread wildfires promoted by anomalously highatmospheric oxygen (O2) and extreme temperatures. Serotiny, or long-term canopy seedstorage, is a fire-adaptive strategy common among plants living in fire-prone areas today,but evidence of this strategy has been lacking from the fossil record. Deposits of abundantfossil charcoal from sedimentary successions of the Chatham Islands, New Zealand, recordwildfires in the south polar regions (75°–80°S) during the mid-Cretaceous (ca. 99–90 Ma).Newly discovered fossil conifer reproductive structures were consistently associated withthese charcoal-rich deposits. The morphology and internal anatomy as revealed by neutrontomography exhibit a range of serotiny-associated characters. Numerous related fossils fromsimilar, contemporaneous deposits of the Northern Hemisphere suggest that serotiny was akey adaptive strategy during the high-fire world of the Cretaceous.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Multidisciplinär geovetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geosciences, Multidisciplinary (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Annan geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Other Earth and Related Environmental Sciences (hsv//eng)
Nyckelord
- Fossil plants
- palaeobotany
- fire adaptation
- charcoal
- hothouse Earth
- oxygen
- Gondwana
- Ecosystems and species history
- Ekosystem och arthistoria
- The changing Earth
- Den föränderliga jorden
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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