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Audience is Undergraduate upper division 15-16
Results 361 - 365 of 374
View Resource Elk (Cervus elaphus) search for food through snow in winter in the Rocky Mountains.

Elk (Cervus elaphus) and other ungulates in the Rocky Mountains of North America must cope with food shortages and severe weather during winter. The strength of density-dependence in these ungulate...

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http://www.esajournals.org/doi/abs/10.1890/05-0355
View Resource An ant (Crematogaster opuntiae) visits an extrafloral nectary of a fishhook barrel cactus (Ferocactus wislizeni).

An ant (Crematogaster opuntiae) visits an extrafloral nectary of a fishhook barrel cactus (Ferocactus wislizeni). In many mutualistic species interactions, a suite of species in one guild exchanges...

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http://www.esajournals.org/doi/abs/10.1890/05-0465
View Resource A rare California pitcher plant (Darlingtonia californica) and potential prey, a wasp (Vespula atropilosa).

The California pitcher plant (Darlingtonia californica) is a rare carnivorous plant endemic to the Siskiyou Mountains of Oregon and northern California. It grows in serpentine fens, a threatened...

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http://www.esajournals.org/doi/abs/10.1890/04-0601
View Resource Bison (Bos bison), an important native grazer in the Great Plains grasslands of North America.

Bison (Bos bison) were important native grazers in the Great Plains. Studies at the Konza Prairie Long Term Ecological Research (LTER) site have shown that bison grazing and periodic fires interact...

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http://www.esajournals.org/doi/abs/10.1890/04-0135
View Resource A red milkweed beetle (Tetraopes tetraophthalmus) foraging on common milkweed (Asclepias syriaca).

The red milkweed beetle (Tetraopes tetraophthalmus) and its host plant, common milkweed (Asclepias syriaca), share a long evolutionary history. The beetle specializes on the milkweed and feeds on the...

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http://www.esajournals.org/doi/abs/10.1890/03-4084
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