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Effect of logging on rodent scatter-hoarding dynamics in tropical forests:implications for plant recruitment

Integrative Zoology 2011年第2期6卷 74-80页

作者： Gabriel GUTIéRREZ-GRANADOS Department of Zoology Institute of BiologyNational Autonomous University of MexicoMexico DFMexico

The present study tested the hypothesis that logging affects the scatter-hoarding behavior of rodents,which,in turn,negatively affects the quantity and quality of Pouteria campechiana(Sapotaceae)seed dispersal.A series of seed stations was established in logged and unlogged forests of ejido Senor,Yucatan Peninsula,and comparisons were made between logged and unlogged forests in terms of:(i)seed removal;(ii)number of seeds hoarded;(iii)hoarding distance;and(iv)the number of recruits and the survival of hoarded *** number of both hoarded and removed seeds was significantly higher in unlogged ***,the mean distance of hoarding was greater in unlogged compared with logged *** recruitment and survival were present in both logged and unlogged sites,there were more surviving seedlings in unlogged *** data indicate that both the quantity and quality of seed dispersal are negatively affected by logging because of a change in the rodent scatter-hoarding *** changes suggest that plant-animal interactions are crucial to the understanding of the ecology and conservation of managed tropical forests.

关键词： dasyprocta punctata seed caching timber extraction Yucatan Peninsula

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