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Climatic factors control rodent seed predation in Pinus pinea L. stands in Central Spain
Authors
Rafael Argimiro Calama Sainz
R. Manso
Marta Pardos Mínguez
Publication date
1 January 2014
Publisher
BioMed Central
Doi
Cite
Abstract
• Context Pinus pinea L. presents serious problems of natural regeneration in managed forest of Central Spain. The species exhibits specific traits linked to frugivore activity. Therefore, information on plant–animal interactions may be crucial to understand regeneration failure. • Aims Determining the spatio-temporal pattern of P. pinea seed predation by Apodemus sylvaticus L.;the factors involved. Exploring the importance of A. sylvaticus L. as a disperser of P. pinea. Identifying other frugivores and their seasonal patterns. • Methods An intensive 24-month seed predation trial was carried out. The probability of seeds escaping predation was modelled through a zero-inflated binomial mixed model. Experiments on seed dispersal by A. sylvaticus were conducted. Cameras were set up to identify other potential frugivores. • Results Decreasing rodent population in summer and masting enhances seed survival. Seeds were exploited more rapidly nearby parent trees and shelters. A. sylvaticus dispersal activity was found to be scarce. Corvids marginally preyed upon P. pinea seeds. • Conclusions Survival of P. pinea seeds is climate-controlled through the timing of the dry period together with masting occurrence. Should germination not take place during the survival period, establishment may be limited. A. sylvaticus-mediated dispersal does not modify the seed shadow. Seasonality of corvid activity points to a role of corvids in dispersal. © 2014, INRA and Springer-Verlag France
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Last time updated on 11/03/2023