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Migration and the trophic structure of Eucalyptus litter macroarthropod communities



Migration and the trophic structure of Eucalyptus litter macroarthropod communities



Naturalia (Rio Claro) 17(0): 161-166



The effect of migration on the trophic structure of communities was experimentally tested with macroarthropods of Eucalyptus litter. Migration was simulated through litter transfer among isolated 'litter islands' with, and without, additional organic matter. Litter islands without experimental migration were found to have significantly more predatory taxes than experimental islands, while no effects were found on the non-predatory taxes. External energy sources in the form of organic matter did not affect these relationships. Migration may, in fact, be a globally desestabilizing process in structuring communities.

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Accession: 009024812

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