Publications from Mexico Coffee Project

List of recent publications, in press and in preparation items associated with the Mexico coffee project

Armbrecht, I., I. Perfecto, and J. Vandermeer. 2004. Enigmatic biodiversity correlations: litter ant biodiversity in a coffee landscape. Science 304:284-286. (armbrecht_et_al.pdf, 131.0 kb, 01-09-2008)
Twig nesting ants respond to diversity of twigs in the litter of a shaded coffee farm.

Perfecto, I., J. Vandermeer, G. Lopez Bautista, G. Ibarra Nuñez, R. Greenberg, P. Bicher, and S. Langridge. 2004. Greater predation in shaded coffee farms: The role of resident neotropical birds. Ecology 2004:2677-2681. (perfect_et_al_bird_div.pdf, 278.0 kb, 01-09-2008)
Simulated pest outbreak controlled by birds.

Perfecto, I., J. Vandermeer, A. Mas, L. Soto Pinto. 2005. Biodiversity, yield, and shade coffee certification. Ecol. Economics 54:435-446. (perfecto_et_al.pdf, 499.0 kb, 01-09-2008)
Economic analysis of biodiversity and production taken together in the context of different levels of shade.

Perfecto, I. and J. Vandermeer. 2006. The effect of an ant/scale mutualism on the management of the coffee berry borer (Hypothenemus hampei) in southern Mexico. Ag. Ecosyst. and Envron. 117:218-221. (perfectvandy-broca.pdf, 109.0 kb, 01-04-2007)
Documentation of the predatory habits of the ant, Azteca instabilis on the beetle coffee pest, Hypothenemus hampei.

Philpott, S. M., I. Perfecto, J. Vandermeer. 2006. Effects of management intensity and season on arboreal ant diversity and abundance in coffee agroecosystems. Biodiversity and Conservation 15:139-155. (philpotperfvandy.pdf, 304.0 kb, 01-09-2008)
Changes in arboreal ant diversity as a function of coffee management systems.

Vandermeer, J. and I. Perfecto. 2006. A keystone mutualism drives pattern in a power function. Science, 17:1000-1002. (keymutualism.pdf, 197.0 kb, 01-04-2007)
Power function followed by distribution of Coccus viridis in coffee bushes, but deviations due to biological forces.

Philpott, S. M., I. Perfecto, J. Vandermeer. 2006. Effects of management intensity and season on arboreal ant diversity and abundance in coffee agroecosystems. Biodiversity and Conservation 15:139-155. (philpotperfvandy.pdf, 304.0 kb, 01-09-2008)
Changes in arboreal ant diversity as a function of coffee management systems.

Vandermeer, J. and I. Perfecto. 2007. The agricultural matrix and a furture paradigm for conservation. Conservation Biology 21:274-277. (vandyperfconsbio.pdf, 112.0 kb, 01-09-2008)
The importance of the agricultural matrix and the kind of agriculture done there by grass roots social movements.

Philpott, S. M., I. Perfecto, and J. Vandermeer. 2008. Behavioral diversity of predatory arboreal ants in coffee agroecosystems. Environ. Entomology, 37:181-191. (philpott_etal_2008_antbehav.pd.pdf, 863.0 kb, 01-10-2008)
Evaluation of niches of three common ant species (Azteca instabilis F. Smith, Camponotus textor Forel, and Crematogaster spp.) in coffee agroecosystems.

Liere and Perfecto. 2008. Cheating on a mutualism: indirect benefits of ant attendance to a coccidophagous coccinellid. Ecological Entomology, 37:143-149. (File is no longer available, 01-04-2007)
Evaluation of the myrmecophylous nature of the coccinelid beetle, Azya orbigera.

Philpott, S. M., I.Perfecto, and J. Vandermeer. 2008. Effects of predatory ants on lower trophic levels across a gradient of coffee management complexity. J. of Animal Ecology 77:505-511. (philpotvandyperfjae.pdf, 192.0 kb, 12-31-2008)
Expected top down effects of predatory ants fail to show up in experimental situation.

Perfecto, I., and J. Vandermeer. 2008. Biodiversity conservation in tropical agroecosystems: A new conservation paradigm. Ann. NY Acad. Science 1134:173-200. (perfvandnyacad.pdf, 311.0 kb, 12-31-2008)
A review article on the biodiversity value of tropical agroecosystems.

Perfecto, I., and J. Vandermeer. 2008. Spatial pattern and ecological process in the coffee agroforestry system. Ecology 89:915-920. (perfectovandyecology.pdf, 254.0 kb, 12-31-2008)
Review article on the use of the coffee agroforestry system as a model for spatial processes.

Vandermeer, J., I. Perfecto, and S. M. Philpott. 2008. Clusters of ant colonies and robust criticality in a tropical agroecosystem. Nature 451;457-459. (vandyperfphilnature.pdf, 512.0 kb, 12-31-2008)
Self-organized clusters of ant nests follow the pattern of robust criticality.

Williams-Guillen, K., I. Perfecto,and J. Vandermee. 2008. Bats limit insects in a netropical agroforestry system. Science 320:70. (williamsguilperfvandyscience.pdf, 61.0 kb, 12-31-2008)
Placing exclosures over coffee plants night and day enabled the demonstration that bats have an effect equivalent to birds in controlling herbivores.

Lin, B. B., I. Perfecto and J. Vandermeer. 2008. Synergies between agricultural intensification and climate change could create surprising vulnerabilities for crops. BioScience 58:847-854. (linperfectvandybioscience.pdf, 420.0 kb, 12-27-2009)
The ability of different types of agroecosystems to respond to climate change is analyzed.

Philpott, S. M., I. Perfecto, J. Vandermeer, and S. Uno.2009. Spatial scale and density dependence in a host parasitoid system: an arboreal ant, Azteca instabilis and its Pseudacteon phorid parasitoid. Environmental Entomology, 38:790-796. (philpott_etal_2009_phorid_density.pdf, 231.0 kb, 12-31-2008)
Experimental demonstration of the density dependent attack rate of the phorid fly parasite on the keystone ant in the coffee system.

Vandermeer, J., I. Perfecto, and H. Liere. 2009. Evidence for effective hyperparasitism on the coffee rust, Hemileia vastatrix, by the insect pathogen, Lecanicillium lecanii through a complex ecological web. Plant Pathology, 58:636-641. (vandyetal_plant_path.pdf, 189.0 kb, 12-31-2008)
Spatial patten of white halo fungus and the classic coffee rust disease are negatively correlated, supporting the idea that the halo fungus is antagonistic to the rust.

Jackson, D., J. Vandermeer, and I. Perfecto. 2009. Spatial and temporal dynamics of a fungal pathogen promote pattern formation in a tropical agroecosystem. The Open Ecology Journal 2:62-73.. (jacksonetal.pdf, 2579.0 kb, 12-31-2008)
Spatial dynamics of the scale insect pathogen and its role in promoting spatial pattern.

Jha, S., and J. Vandermeer. 2010. Impacts of coffee agroforestry management on tropical bee communities. Biological Conservation, 143:1423-1431. (jha_vandermeer2009-oikos-contrasting-foraging.pdf, 213.0 kb, 08-02-2011)
Concerning the effect of coffee management system on bee biodiversity.

Vandermeer, J., I. Perfecto and S. Philpott. 2010. Ecological complexity and pest control in organic coffee production: Uncovering an autonomous ecosystem service. BioScience 60:527-537. (vandyetalbioscience.pdf, 5064.0 kb, 08-02-2011)
Summary article of past work on autonomous biological control in traditional coffee management systems.

Mathis, K. A., S. M. Philpott, R. F. Moreira. 2010. Parasite Lost: Chemical and visual cuies used by Pseudacteon in Search of Azteca instabilis. J Insect Behav.DOI 10.1007/s10905-010-9247-3 (File is no longer available, 08-02-2011)
Experimental demonstration that phorids need to see movement of Azteca ants before attacking.

Livingston, G. F. and S. M. Philpott. in review. Neutral and niche assembly in a community of tropical arboreal ants. Ecology, in review. (livingston_philpott_ecology.pdf, 340.0 kb, 12-31-2008)
Evaluation of competition/dispersal tradeoff in the structure of twig-nesting ant community in the coffee system.

Livingston, G. F., A. M. White, and C. J. Kratz. (in review) Indirect interactions between ant-tended hemi[terans, a dominant ant (Azteca instabilis), and shade trees in a tropical agroecosystrem. Environmental Entomology (in review) (livingston_et_al.pdf, 299.0 kb, 01-05-2007)
Analysis of the role of shade tree species and the distribution of C. viridis in surrounding coffee bushes.

Jackson, D., J. Skillman, and J. Vandermeer. 2012. Indirect biological control of the coffee leaf rust, Hemileia vastratrix, by the entomogenous fungus Lecanicillium lecanii in a complex coffee agroecosystem. Biological Control, 61:89-97. (jacksonskilvandy.pdf, 1212.0 kb, 04-06-2013)
Evidence for partial control of the coffee rust disease by the white halo fungus, Lecanicillium lecanii.

Jha, S., D. Allen, H. Liere, I. Perfecto, and J. Vandermeer. 2012. Mutualisms and population regulation: mechanism matters. PLOS One, 7(8): e43510.doi:10.1371/journal.pone.0043510. (jhaetal.pdf, 1107.0 kb, 04-06-2013)
Detailed analysis of the mutualism between the ant Azteca instabilis and the scale insect Coccus viridis.