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Long-term resilience decline in plant ecosystems across the Danian Dan-C2 hyperthermal event, Boltysh Crater, Ukraine

D. W. Jolley, I. Gilmour, M. Gilmour, D. B. Kemp and S. P. Kelley
Long-term resilience decline in plant ecosystems across the Danian Dan-C2 hyperthermal event, Boltysh Crater, Ukraine
Journal of the Geological Society of London (July 2015) 172 (4): 491-498

Abstract

Mass-balance calculations indicate that a massive amount of delta (super 13) C-depleted carbon was released into the early Danian atmosphere in volumes comparable with the younger Paleocene-Eocene Thermal Maximum (PETM). This Danian hyperthermal event (the Dan-C2) has been documented from the fill of the Boltysh meteorite crater, Ukraine. Palynofloras recovered from the Boltysh crater fill show a trend from mesic forest to savannah ecosystem dominance on a millennial scale across the hyperthermal inception with no abrupt compositional shift. This longer-term trend is overprinted by moisture availability oscillations reflecting orbital forcing. Forcing is not directly tracked by the oscillations, which are composed of mesic forest and savannah palynofloras separated by rapid critical transitions. The absence of an ecological collapse at the Dan-C2 indicates that plant ecosystems experienced dominant forcing from orbital cyclicity, rather than a stochastic temperature rise.


ISSN: 0016-7649
EISSN: 2041-479X
Coden: JGSLAS
Serial Title: Journal of the Geological Society of London
Serial Volume: 172
Serial Issue: 4
Title: Long-term resilience decline in plant ecosystems across the Danian Dan-C2 hyperthermal event, Boltysh Crater, Ukraine
Affiliation: University of Aberdeen, Department of Geology and Petroleum Geology, Aberdeen, United Kingdom
Pages: 491-498
Published: 201507
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 48
Accession Number: 2015-084881
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sketch map
N48°53'60" - N48°53'60", E32°15'00" - E32°15'00"
Secondary Affiliation: Open University, GBR, United Kingdom
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 201536
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