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Leaf-cutting ants and early forest regeneration in central Amazonia: effects of herbivory on tree seedling establishment

Published online by Cambridge University Press:  10 July 2009

Heraldo L. Vasconcelos  and
J. Malcolm Cherrett
Heraldo L. Vasconcelos
Affiliation:
Coordenaçāo de Pesquisas em Ecologia, Instituto National de Pesquisas da Amazônia (INPA), C.P. 478, 69011-970 Manaus, AM, Brazil
J. Malcolm Cherrett
Affiliation:
School of Biological Sciences, University of Wales, Bangor, Gwynedd LL57 2UW, UK
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Abstract

The effects of herbivory by the leaf-cutting ant Atta laevigata Fr. Smith on the re-establishment of forest trees in an abandoned farm near Manaus, central Amazonia, were investigated. Experimental seedling transplants and observations on seedlings which emerged naturally in the study area showed that damage by leaf-cutting ants negatively affected tree seedling survival and growth. However, excluding leaf-cutting ants from experimental plots for 20 mo did not significantly increase tree seedling densities. The number of seedlings emerging varied considerably between plots and this obscured any effect the ants may have had on seedling survivorship. Taller seedlings, and seedlings attacked only once, suffered less mortality than smaller seedlings and seedlings attacked twice or more. In general, mortality was greater for those species preferred by the ants, indicating that selective herbivory by leaf-cutting ants affects tree species composition. The number of seedlings attacked by A. laevigata remained approximately constant throughout the period of this study in spite of the fact that the number available for attack increased. Thus, the chance of any individual seedling being attacked declined with time, suggesting that the effect of Atta herbivory on tree establishment is stronger during the first few years of forest regeneration.

Keywords

antsAmazoniaAtta laevigataherbivorysecondary succession
Type
Research Article
Information
Journal of Tropical Ecology , Volume 13 , Issue 3 , May 1997 , pp. 357 - 370
Copyright
Copyright © Cambridge University Press 1997

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References

LITERATURE CITED

Alvarez-Buylla, E. R. & Martinez-Ramos, M. 1990. Seed bank versus seed rain in the regeneration of a tropical pioneer tree. Oecologia 84:314–325.CrossRefGoogle ScholarPubMed
Blanton, C. M. & Ewel, J. J. 1985. Leaf-cutting ant herbivory in successional and agricultural tropical ecosystems. Ecology 66:861–869.CrossRefGoogle Scholar
Brown, B. J. & Ewel, J. J. 1988. Responses to defoliation of species-rich and monospecific tropical plant communities. Oecologia 75:12–19.CrossRefGoogle ScholarPubMed
Brown, V. K. & Gange, A. C. 1989. Herbivory by soil-dwelling insects depresses plant species richness. Functional Ecology 3:667–671.CrossRefGoogle Scholar
Cherrett, J. M. 1968. The foraging behavior of Atta cephalotes L. (Hymenoptera: Formicidae). I. Foraging pattern and plant species attacked in tropical rain forest. Journal of Animal Ecology 37:387–403.CrossRefGoogle Scholar
Cherrett, J. M. & Simms, B. G. 1968. Some costings for leaf-cutting ant damage in Trinidad. Journal of the Agricultural Society of Trinidad and Tobago 68:313–322.Google Scholar
Cherrett, J. M. & Jutsum, A. R. 1983. The effects of some ant species, especially Atta cephalotes L., Acromyrmex octospinosus (Reich) and Azteca sp. (Hymenoptera: Formicidae) on citrus growing in Trinidad. Pp. 155–163 in Jaison, P. (ed.). Social insects in the tropics. University of Paris, Paris.Google Scholar
Delabie, J. C. 1990. The ant problems of cocoa farms in Brazil. Pp. 555–569 in Vander Meer, R. K., Jaffe, K. & Cedeno, A. (eds). Applied myrmecology: a world perspective. Westview Press, Boulder.Google Scholar
Edwards, P. J. & Gillman, M. P. 1987. Herbivores and plant succession. Pp. 295–314 in Gray, A. J., Crawley, M. J. & Edwards, P. J. (eds). Colonization, succession and stability. Blackwell Scientific Publications, Oxford.Google Scholar
Gange, A. C., Brown, V. K., Evans, I. M. & Storr, A. L. 1989. Variation in the impact of insect herbivory on Trifolium pratense through early plant succession. Journal of Ecology 77:537–551.CrossRefGoogle Scholar
Gibson, C. W., Brown, V. K. & Jepsen, M. 1987. Relationships between the effects of insect herbivory and sheep grazing on seasonal changes in an early successional plant community. Oecologia 71:245–253.CrossRefGoogle Scholar
Howard, J. J. 1987. Leaf-cutting ant diet selection: the role of nutrients, water and secondary chemistry. Ecology 68:503–515.CrossRefGoogle Scholar
Jonkman, J. C. M. 1979. Distribution and densities of the leaf-cutting ant Atta vollenweideri Forel, 1893 in Paraguay. Zeitschrift für Angewandte Entomologie 88:27–43.CrossRefGoogle Scholar
Karin, G. 1993. Tree seedling development in tropical dry abandoned pasture and secondary forest in Costa Rica. Journal of Vegetation Science 4:95–102.Google Scholar
Mills, J. N. 1986. Herbivores and early postfire succession in southern California chaparral. Ecology 67:1637–1649.CrossRefGoogle Scholar
Moser, J. C. 1986. Estimating timber losses from a town ant colony with aerial photographs. Southern Journal of Applied Forestry 10:45–47.CrossRefGoogle Scholar
Moutinho, P. R. S., Nepstad, D. C., Araujo, K. & Uhl, C. 1993. Formigas e floresta. Ciência Hoje 88:59–60.Google Scholar
Nepstad, D., Uhl, C. & Serrāo, E. 1990. Surmounting barriers to forest regeneration in abandoned, highly degraded pastures: A case study from Paragominas, Para, Brazil. Pp. 215–229 in Anderson, A. (ed.). Alternatives to deforestation, steps toward sustainable use of the Amazon rain forest. Columbia University Press, New York.Google Scholar
Parker, M. A. & Root, R. B. 1981. Insect herbivores limit habitat distribution of a native composite, Machaeranthera canescens. Ecology 62:1390–1392.CrossRefGoogle Scholar
Reed, J. & Cherrett, J. M. 1990. Foraging strategies and vegetation exploitation in the leaf-cutting ant Atta cephalotes (L.) – a preliminary simulation model. Pp. 355–366 in Vander Meer, R. K., Jaffe, K. & Cedeno, A., (eds). Applied myrmecology: a world perspective. Westview Press, Boulder.Google Scholar
Ribeiro, G. T. & Woessner, R. A. 1980. Efeito de diferentes níveis de desfolha artificial para avaliaçāo de danos causados por saúvas (Atta spp.) em árvores de Gmelina arborea L. e de Pinus caribaea var. Hondurensis Bar. & Golf. Anais da Sociedade Entomológica do Brasil 9:261–272.CrossRefGoogle Scholar
Ribeiro, M. N. G. & Adis, J. 1984. Local rainfall variability: a potential bias for bioecological studies in central Amazon. Acta Amazonica 14:159–174.CrossRefGoogle Scholar
Roberts, J. T. & Heithaus, E. R. 1986. Ants rearrange the vertebrate-generated seed shadow of a neotropical fig tree. Ecology 67:1046–1051.CrossRefGoogle Scholar
Rockwood, L. L. 1973. The effect of defoliation on seed production of six Costa Rican tree species. Ecology 54:1363–1369.CrossRefGoogle Scholar
Rockwood, L. L. 1976. Plant selection and foraging patterns in two species of leaf-cutting ants (Atta). Ecology 57:48–61.CrossRefGoogle Scholar
Uhl, C., Buschbacher, R. & Serrāo, E. A. S. 1988. Abandoned pastures in eastern Amazonia. I. Patterns of plant succession. Journal of Ecology 76:663–681.CrossRefGoogle Scholar
Uhl, C., Nepstad, D., Buschbacher, R., Clark, K., Kauffman, B. & Subler, S. 1990. Studies of ecosystem response to natural and anthropogenic disturbances provide guidelines for designing sustainable land-use systems in Amazonia. Pp. 24–42 in Anderson, A. (ed.). Alternatives to deforestation, steps toward sustainable use of the Amazon rain forest. Columbia University Press, New York.Google Scholar
Vasconcelos, H. L. 1988. Distribution of Atta (Hymenoptera: Formicidae) in ‘terra-firme’ rain forest of central Amazonia: density, species composition and preliminary results on effects of forest fragmentation. Acta Amazonica 18:309–315.CrossRefGoogle Scholar
Vasconcelos, H. L. 1990. Foraging activity of two species of leaf-cutting ants (Atta) in a primary forest of the central Amazon. Insectes Sociaux 37:131–145.CrossRefGoogle Scholar
Vasconcelos, H. L. & Cherrett, J. M. 1995. Changes in leaf-cutting ant populations (Formicidae: Attini) after the clearing of mature forest in Brazilian Amazonia. Studies on Neotropical Fauna and Environment 30:107–113.CrossRefGoogle Scholar
Wetterer, J. K. 1994. Ontogenic changes in forager polymorphism and foraging ecology in the leaf-cutting ant Atta cephalotes. Oecologia 98:235–238.CrossRefGoogle Scholar
Zar, J. H. 1984. Biostatistical analysis. Prentice-Hall, Englewood Cliffs, New Jersey.Google Scholar