|2010||Karubian, J., V. L. Sork, T. Roorda, R. Durães, and T. B. Smith. Destination-based seed dispersal homogenizes genetic structure of a tropical palm. Molecular Ecology. PDF|
|2007||Wang, B. C., V. L. Sork, M. T. Leong, and T. B. Smith. Hunting of mammals affects seed removal and dispersal of the Afrotropical tree, Antrocaryon klaineanum (Anacardiaceae). Biotropica 39(3): 340-347. PDF|
|2005||French, A., and T.B. Smith. Importance of body size in determining dominance hierarchies among diverse tropical frugivores. Biotropica 37: 95-100. PDF|
|2004||Stauffer, D., and T. B. Smith. Breeding and nest site characteristics of the Black-casqued Ceratogymna atrata and White-thighed Ceratogymna cylindricus Hornbill in south-central Cameroon. Ostrich 75: 79-88. PDF|
|2002||Holbrook, K. M., T. B. Smith and B. D. Hardesty. Long-distance movements of frugivorous rainforest hornbills. Ecography 25: 745-749. PDF|
|2002||Poulsen, J. R., C. J. Clark, E. F. Conner and T. B. Smith. Differential resource use by primates and hornbills: implications for seed dispersal. Ecology 83: 228-240. PDF|
|2002||Wang, B. C. and T. B. Smith. Closing the seed dispersal loop. Trends in Ecology and Evolution 17: 379-386. PDF|
|2001||Poulsen, J. R., C. J. Clark, and T. B. Smith. Seed dispersal by a primate community in the Dja Reserve, Cameroon. Journal of Tropical Ecology 17: 787-808. PDF|
|2001||Poulsen, J. R., C. J. Clark, and T. B. Smith. Seasonal variation in the feeding ecology of the grey-cheeked mangabey (Lophocebus albigena) in Cameroon. American Journal of Primatology 54: 91-105. PDF|
|2000||Holbrook, K. M and T. B. Smith. Seed dispersal and movement patterns in two species of Ceratogymna hornbills in a West African tropical lowland forest. Oecologia 125: 249-257. PDF|
|1998||Whitney, K., Fogiel, M., Lamperti, A., Holbrook, K., Stauffer, D., Hardesty, B., Parker, V. Smith, T. Seed dispersal by Ceratogymna hornbills in the Dja Reserve of Cameroon. Journal of Tropical Ecology 14: 351-371. PDF|
|1998||Whitney, K.. and Smith, T. Habitat use and resource tracking by African Ceratogymna hornbills: implications for seed dispersal and forest conservation. Animal Conservation 1: 107-117. PDF|
South America (Ecuador)
These long-term studies examine the role of birds and primates as seed dispersers in the maintenance of tree diversity in West African and Neotropical rainforests. In West Africa, we are using data gathered at a remote field station (maintained by CTR and ECOFAC) in the Dja Reserve, (a UN designated Biosphere Reserve and West Africa' s largest). CTR members have learned that just two species of Hornbills disperse the seeds of over 25% of the more than 300 tree species found in the reserve. Given the alarming population declines of other seed dispersers, particularly primates and elephant, this work is of enormous importance to conservation planning.
In Ecuador, we are studying the Long-wattled Umbrellabird (Cephalopterus penduliger) northwestern Chocó rainforests and Scarlet Macaws (Ara macao) in the Amazon basin. Both species are key dispersers of seeds within their home ranges, yet the role each plays in regeneration of degraded habitat and maintenance of primary forests are poorly known. These projects employ radio telemetry and detailed phenological data to quantify the basic biology of these little-known yet charismatic and ecologically vital species. Additionally, rainforest restoration projects using an experimental approach to restoration are currently being developed in Ecuador in conjunction with local and international NGOs. CTR is also developing proposals to expand this work to include comparative research in Equatorial Guinea, Democratic Republic of Congo, Central African Republic, and Gabon.