Plants are attacked by a multitude of insects and mammals. As defense against these herbivores they developed complex defense mechanisms over the course of evolution: spines, thorns, leaf hairs and a number of toxic chemical ...
Plants & Animals
Jan 28, 2011
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While Yellowstone's celebrated bison may be among the most popular tourist attractions in the park, their grazing habits and increasing numbers have raised questions about the long-term stability of the park's grasslands. ...
Ecology
Dec 20, 2010
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(PhysOrg.com) -- Paleontologists from the University of Pennsylvania and the Utah Geological Survey have described two skeletons representing two new species of beaked herbivorous dinosaurs, known as iguanodonts, from Utah. ...
Archaeology
Nov 23, 2010
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(PhysOrg.com) -- By examining the type of rock in which dinosaur fossils were embedded, an often unappreciated part of the remains, scientists have determined that different species of North American dinosaurs from the Late ...
Archaeology
Oct 14, 2010
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How many species of insects exist? Umea University researcher, Genoveva Rodriguez-Castaneda, found that in tropical mountains there are six times more insects than shown in global calculations. The insects in these areas ...
Ecology
Sep 6, 2010
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During field studies, scientists at the Max Planck Institute for Chemical Ecology discovered that the oral secretions of tobacco hornworm larvae contain a particular substance that promptly alters a green leaf volatile in ...
Ecology
Aug 26, 2010
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If plants did not defend themselves in some way, they would certainly be gobbled up by a whole suite of voracious predators ranging from little insects to large mammalian herbivores. Indeed, not only do plants defend themselves, ...
Plants & Animals
Apr 23, 2010
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(PhysOrg.com) -- Lions, tigers and bears top the ecological pyramid-the diagram of the food chain that every school child knows. They eat smaller animals, feeding on energy that flows up from the base where plants convert ...
Ecology
Apr 15, 2010
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Scientists connected to VIB and Ghent University have discovered how plants turn their defense mechanisms on and off. The system is apparently controlled by a key protein that the researchers have named "NINJA." The discovery ...
Cell & Microbiology
Apr 1, 2010
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There's a war occurring each day in our backyards - plant versus plant-eating insect versus insect-eating insect. Research by UC Irvine's Kailen Mooney suggests the outcome - of interest to farmers - is a stalemate.
Plants & Animals
Mar 25, 2010
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