Indication of Global Deforestation at the Cretaceous-Tertiary Boundary by New Zealand Fern Spike

@article{Vajda2001IndicationOG,
  title={Indication of Global Deforestation at the Cretaceous-Tertiary Boundary by New Zealand Fern Spike},
  author={Vivi Vajda and J. Ian Raine and Christopher J. Hollis},
  journal={Science},
  year={2001},
  volume={294},
  pages={1700 - 1702}
}
The devastating effect on terrestrial plant communities of a bolide impact at the Cretaceous-Tertiary boundary is shown in fossil pollen and spore assemblages by a diverse flora being abruptly replaced by one dominated by a few species of fern. Well documented in North America, this fern spike signals widespread deforestation due to an impact winter or massive wildfires. A Southern Hemisphere record of a fern spike, together with a large iridium anomaly, indicates that the devastation was truly… 
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TLDR
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References

SHOWING 1-10 OF 20 REFERENCES
Disruption of the Terrestrial Plant Ecosystem at the Cretaceous-Tertiary Boundary, Western Interior
The palynologically defined Cretaceous-Tertiary boundary in the western interior of North America occurs at the top of an iridium-rich clay layer. The boundary is characterized by the abrupt
Vegetation, climatic and floral changes at the Cretaceous-Tertiary boundary
The western interior of North America has the only known non-marine sections that contain the iridium-rich clay interpreted as the Cretaceous–Tertiary (K–T) boundary1–7. Because vegetation and
End-Cretaceous devastation of terrestrial flora in the boreal Far East
A continuous marine sedimentary sequence spanning the Cretaceous/Tertiary (K/T) boundary has been identified in eastern Hokkaido, Japan, on the basis of planktonic foraminifera. The K/T boundary is
Siliceous plankton bloom in the earliest Tertiary of Marlborough, New Zealand
In marked contrast to mass extinctions and productivity crises in much of the world' oceans at the Cretaceous-Tertiary boundary, siliceous plankton thrived in earliest Paleocene seas of Marlborough,
Ignition of global wildfires at the Cretaceous/Tertiary boundary
TLDR
It is shown that the thermal radiation produced by the ballistic re-entry of ejecta condensed from the vapour plume of the impact could have increased the global radiation flux by factors of 50 to 150 times the solar input for periods ranging from one to several hours.
Palaeobotanical evidence for a June 'impact winter' at the Cretaceous/Tertiary boundary
A LARGE bolide impact, such as that thought to have occurred at the Cretaceous/Tertiary (K/T) boundary, should produce large amounts of light-attenuating debris, thereby causing an 'impact
Global fire at the Cretaceous– Tertiary boundary
Cretaceous-Tertiary (K-T) boundary clays from five sites in Europe and New Zealand are 102-104-fold enriched in elemental C (mainly soot), which is isotopically uniform and apparently comes from a
Cretaceous Extinctions: Evidence for Wildfires and Search for Meteoritic Material
TLDR
Clay samples from three Cretaceous-Tertiary boundary sites contain a worldwide layer of soot, suggesting that soot production by large wildfires is about 10 times more efficient that has been assumed for a nuclear winter.
High-resolution leaf-fossil record spanning the Cretaceous/Tertiary boundary
THEORIES that explain the extinctions characterizing the Cretaceous/Tertiary (K/T) boundary1-3 need to be tested by analyses of thoroughly sampled biotas. Palynological studies are the primary means
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