Abstract
In tropical regions where agricultural activities are limited, agroforestry is an alternative for both economic development and for the management and conservation of biodiversity. The potential role of different types of land use as reservoirs of dung beetle diversity in the wet tropical forest of the Pacific lowlands of Colombia is evaluated in three agroforestry systems that differ in canopy cover and the sowing density of Borojoa patinoi crops associated with timber forest. Although total species richness was similar among land use types, differences related to the decrease in the abundance and biomass of the species were remarkable, and reflected in turn by the diversity and structure of the guilds. The general pattern observed was one in which the structure of the dung beetle assemblage of B. patinoi growing below a diversified and permanent tree cover was similar to that of the primary and secondary forest. Beetle diversity in management systems with less tree cover or a high sowing density of B. patinoi was lower and very similar to that of abandoned agricultural fields. This suggests that B. patinoi agroforestry systems can be viewed as valuable instruments for biodiversity management and conservation in the wet tropical forests of the Pacific lowlands and not just as substitutes for forest, though we must be aware that structural changes in the beetle community may in turn affect the ecological processes regulated by these insects in the agrosystems under study.
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Acknowledgments
We thank Helbert Olaya and Mario Mosquera for assistance during fieldwork, and Francisco Serna and Erika Vergara for help processing samples in the laboratory. Keith MacMillan translated and revised a first English version of the manuscript. Comments by two anonymous reviewers greatly improved the manuscript. Bianca Delfosse revised the final version of the manuscript. JCN is grateful to the Organización de Estados Americanos (OEA) for supporting his research and for the award of a fellowship.
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Neita, J.C., Escobar, F. The potential value of agroforestry to dung beetle diversity in the wet tropical forests of the Pacific lowlands of Colombia. Agroforest Syst 85, 121–131 (2012). https://doi.org/10.1007/s10457-011-9445-9
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DOI: https://doi.org/10.1007/s10457-011-9445-9