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Plant Ecological Strategies Shift Across the Cretaceous–Paleogene Boundary
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نویسنده
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blonder b. ,royer d.l. ,johnson k.r. ,miller i. ,enquist b.j.
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منبع
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plos biology - 2014 - دوره : 12 - شماره : 9
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چکیده
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The chicxulub bolide impact caused the end-cretaceous mass extinction of plants,but the associated selectivity and ecological effects are poorly known. using a unique set of north dakota leaf fossil assemblages spanning 2.2 myr across the event,we show among angiosperms a reduction of ecological strategies and selection for fast-growth strategies consistent with a hypothesized recovery from an impact winter. leaf mass per area (carbon investment) decreased in both mean and variance,while vein density (carbon assimilation rate) increased in mean,consistent with a shift towards “fast” growth strategies. plant extinction from the bolide impact resulted in a shift in functional trait space that likely had broad consequences for ecosystem functioning. © 2014.
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آدرس
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department of ecology and evolutionary biology,university of arizona,tucson,az,united states,rocky mountain biological laboratory,gothic,colorado, United States, department of earth and environmental sciences,wesleyan university,middletown,ct, United States, national museum of natural history,smithsonian institution,washington,dc, United States, denver museum of nature and science,denver,co, United States, department of ecology and evolutionary biology,university of arizona,tucson,az,united states,rocky mountain biological laboratory,gothic,colorado,united states,the santa fe institute,santa fe,nm, United States
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Authors
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