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Decoupled Plant and Insect Diversity after the End-Cretaceous Extinction
Peter Wilf, Conrad C. Labandeira, Kirk R. Johnson and Beth Ellis
New Series, Vol. 313, No. 5790, Freshwater Resources (Aug. 25, 2006), pp. 1112-1115
Published by: American Association for the Advancement of Science
Stable URL: http://www.jstor.org/stable/3847083
Page Count: 4
You can always find the topics here!Topics: Plants, Flora, Infestation, Species diversity, Mining, Phytophagous insects, Herbivores, Leaves, Specimens, Frass
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Food web recovery from mass extinction is poorly understood. We analyzed insect-feeding damage on 14,999 angiosperm leaves from 14 latest Cretaceous, Paleocene, and early Eocene sites in the western interior United States. Most Paleocene floras have low richness of plants and of insect damage. However, a low-diversity 64.4-million-year-old flora from southeastern Montana shows extremely high insect damage richness, especially of leaf mining, whereas an anomalously diverse 63.8-million-year-old flora from the Denver Basin shows little damage and virtually no specialized feeding. These findings reveal severely unbalanced food webs 1 to 2 million years after the end-Cretaceous extinction 65.5 million years ago.
Science © 2006 American Association for the Advancement of Science