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Does inundation risk affect leaf-cutting ant distribution? A study along a topographic gradient of a Costa Rican tropical wet forest

Published online by Cambridge University Press:  19 November 2013

Sebastian F. Sendoya ,
Paulo S. D. Silva  and
Alejandro G. Farji-Brener
Sebastian F. Sendoya
Affiliation:
Programa de Pós-Graduação em Ecologia. Departamento de Biologia Animal, Universidade Estadual de Campinas, 13083-862, Campinas, São Paulo, Brasil
Paulo S. D. Silva*
Affiliation:
Departamento de Estudos Básicos e Instrumentais, Universidade Estadual do Sudoeste da Bahia, BR 415, Km 03, s/nº 45700-000, Itapetinga, Bahia, Brasil
Alejandro G. Farji-Brener
Affiliation:
Laboratorio Ecotono, Centro Regional Universitario Bariloche, Universidad Nacional del Comahue-INIBIOMA-CONICET, Pasaje Gutierrez 1125 (8400), Bariloche, Argentina
*
1Corresponding author. Email: paulosavio@uesb.edu.br
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Abstract:

Successional state of forest and availability of pioneer plants are recognized factors affecting densities of leaf-cutting ants. However little is known about how abiotic factors can shape nest distributions. We investigated the effect of topography, soil, forest successional state and inundation risk on nest density and size of Atta cephalotes colonies along streams in a tropical wet forest in Costa Rica. In each forest type, we surveyed 12 sites, each site comprising five transects (10 × 100 m) varying in topography and proximity to streambeds. We found no difference regarding nest size or density between forest types or soil consociation. Nest density varied with topographic environment, with significantly higher nest density on slope tops (farther from streambeds) and without colonies in valley bottoms (closer to streambeds). Nests found in areas affected by the last great inundation before our study were scarcer and smaller than nests in non-flooded areas. We showed that inundation events favour an accumulation of Atta colonies towards higher sites, where they are also allowed to become larger and may survive longer. Inundation risk may be a strong force shaping the distribution of leaf-cutting ant nests in tropical floodplain forests, even concealing the relevance of successional state of forest.

Keywords

ant abundanceant nestsAtta cephalotesdisturbanceflooding
Type
Short Communication
Information
Journal of Tropical Ecology , Volume 30 , Issue 1 , January 2014 , pp. 89 - 92
Copyright
Copyright © Cambridge University Press 2013 

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References

LITERATURE CITED

ADIS, J. 1982. Eco-entomological observations from the Amazon: III. How do leaf-cutting ants of inundation forest survive flooding? Acta Amazonica 12:839–840.CrossRefGoogle Scholar
BITANCOURT, A. A. 1941. Expressão matemática do crescimento de formigueiros de “Atta sexdens rubropilosa” representado pelo aumento do número de olheiros. Arquivos do Instituto Biológico de São Paulo 12:229–237.Google Scholar
CORELLA, O. 2001. Elaboración de un mapa histórico del cambio de uso del suelo en la Estación Biológica La Selva, Puerto Viejo de Sarapiquí, Heredia. Doctoral thesis, Instituto Tecnológico de Costa Rica.Google Scholar
COSARINSKY, M. I. & ROCES, F. 2007. Neighbor leaf-cutting ants and mound-building termites: comparative nest micromorphology. Geoderma 141:224–234.CrossRefGoogle Scholar
DENSLOW, J. S. 1987. Tropical rainforest gaps and tree species diversity. Annual Review of Ecology and Systematics 18:431–451.CrossRefGoogle Scholar
FARJI-BRENER, A. G. 2001. Why are leaf-cutting ants more common in early secondary forests than in old-growth tropical forests? An evaluation of the palatable forage hypothesis. Oikos 92:169–177.CrossRefGoogle Scholar
IUSS WORKING GROUP WRB. 2006. World reference base for soil resources. World Soil Resources Reports No. 103. FAO, Rome. 128 pp.Google Scholar
KLEINEIDAM, C. & ROCES, F. 2000. Carbon dioxide concentrations and nest ventilation in nests of the leaf-cutting ant Atta vollenweideri. Insectes Sociaux 47:241–248.CrossRefGoogle Scholar
LAURANCE, W. F., FERREIRA, L. V., RANKIN-DE MERONA, J. M. & LAURANCE, S. G. 1998. Rain forest fragmentation and the dynamics of Amazonian tree communities. Ecology 79:2032–2040.CrossRefGoogle Scholar
MCDADE, L. A., BAWA, K. S., HESPENHEIDE, H. A. & HARTSHORN, G. S. 1994. La Selva: ecology and natural history of a neotropical rain forest. University of Chicago Press, Chicago. 493 pp.Google Scholar
PEÑALOZA, C. & FARJI-BRENER, A. G. 2003. The importance of treefall gaps as foraging sites for leaf-cutting ants depends on forest age. Journal of Tropical Ecology 19:603–605.CrossRefGoogle Scholar
SCHNITZER, S. A. & CARSON, W. P. 2001. Treefall gaps and the maintenance of species diversity in a tropical forest. Ecology 82:913–919.CrossRefGoogle Scholar
SILVA, P. S. D., BIEBER, A. G. D., LEAL, I. R., WIRTH, R. & TABARELLI, M. 2009. Decreasing abundance of leaf-cutting ants across a chronosequence of advancing Atlantic forest regeneration. Journal of Tropical Ecology 25:223–227.CrossRefGoogle Scholar
SOKAL, R. R. & ROHLF, F. J. 1995. Biometry: the principles and practice of statistics in biological research. (Third edition). W. H. Freeman and Co., New York. 887 pp.Google Scholar
SOLLINS, P., SANCHO, F. M., MATA, R. C. & SANFORD, R. 1994. Soils and soil process research. Pp. 34–53 in McDade, L. A., Bawa, K. S., Hespenheide, H. A. & Hartshorn, G. S. (eds.). La Selva: ecology and natural history of a neotropical rain forest. University of Chicago Press, Chicago.Google Scholar
VAN GILS, H. A. J. A., GAIGL, A. & GÓMEZ, L. E. 2010. The relationship between soil variables and leafcutter ant (Atta sexdens) nest distribution in the Colombian Amazon. Insectes Sociaux 57:487–494.CrossRefGoogle Scholar