Dr. Christopher Uhl: Research Overview

Though I have conducted research and published papers in a variety of realms—e.g., nutrient cycling, forestry, economics, fire ecology, agroecology, sustainable development—all my research falls under the rubric of healing. Indeed, all my past research in Amazonia focused, in one way or the other, on ecological wounds and the healing process, just as my present scholarship, focusing as it does, on “developing ecological consciousness” and “teaching as if life matters” is dedicated to the healing of our minds and hearts.

Articles Published in Refereed Journals
Jordan, C. F., and C. Uhl. 1978. Biomass of a tierra firme forest of the Amazon Basin. Ecologia Plantarum 13:387-400.
Uhl, C., and P. Murphy. 1981. Composition, structure, and regeneration of a tierra firme forest in the Amazon Basin of Venezuela. Tropical Ecology 22:219-237.
Uhl, C., and P. Murphy. 1981. A comparison of energy values and of productivities between early successional vegetation and agricultural crops after cutting and burning a tierra firme rain forest in the Amazon Basin. Agroecosystems 7:63-83.
Uhl, C., K. Clark, H. Clark, and P. Murphy. 1981. Early plant succession after forest cutting and burning in the Upper Rio Negro region of the Amazon Basin. Journal of Ecology 69:631-648.
Uhl C. 1982. Tree dynamics in a species rich tierra firme forest of the Amazon Basin. Acta Cientifica Venezolana 33:72-77.
Uhl, C. 1982. Recovery following disturbances of different intensities in the Amazon rain forest of Venezuela. Interciencia 7:19-24.
Uhl, C., C. Jordan, R. Herrera, K. Clark, and H. Clark. 1982. Impact of forest removal by cutting, burning, and bulldozing on nutrient loss and biomass accumulation in an Amazon Caatinga forest. Oikos 38:313-320.
Uhl, C., H. Clark, K. Clark, and P. Maquirino. 1982. Successional patterns associated with slash and burn agriculture in the Upper Rio Negro region of the Amazon Basin. Biotropica 14:249-254.
Uhl, C. 1983. You can keep a good forest down. Natural History Magazine 92:70-79.
St. John, T., and C. Uhl. 1983. Mycorrhizae at San Carlos, Venezuela. Acta Cientifica Venezolan 34:233-237.
Uhl, C., and K. Clark. 1983. Seed ecology of selected Amazon Basin successional species emphasizing forest seed banks, seed longevity, and seed germination triggers. Botanical Gazette 44:419-425.
Montagnini, F., C. Uhl, and H. Neufeld. 1984. Heavy metal concentration in some non-vascular plants in an Amazonian rain forest. Water, Air and Soil Pollution 21:317-321.
Uhl, C., and C. Jordan. 1984. Vegetation and nutrient dynamics during the first five years of succession following forest cutting and burning in the Rio Negro region of Amazonia. Ecology 65:1476-1490.
Clark, K., and C. Uhl. 1984. Deterioro de la vida subsistencia tradicional en San Carlos de Rio Negro. Interciencia 9:358-365.
Sanford, R. L., J. Saldarriaga, K. Clark, C. Uhl, and R. Herrera. 1985. Amazon rainforest fires. Science 227:53-55.
Uhl, C., and R. Buschbacher. 1985. A disturbing synergism between cattle ranch burning practices and selective tree harvesting in the Eastern Amazon. Biotropica 17:265-268.
Uhl, C., and J. Saldarriaga. 1986. Fragilidad de la pluviselva Amazonica lluvioso. Ciencia y Investigacion (Spanish edition of Scientific American) 121:72-81.
Uhl, C., and G. Parker. 1986. Our steak in the jungle. Bioscience 36:642.
Uhl, C. 1987. Factors controlling succession following slash and burn agriculture in Amazonia. Journal of Ecology 75:377-407.
Clark, K. and C. Uhl. 1987. Farming, fishing and fire in the history of the Upper Rio Negro of Venezuela. Human Ecology 15:1-26.
Uhl, C. and R. Buschbacher. 1988. O que a quemada Atrai. Ciencia Hoje 7:25-28.
Saldarriaga, J., D.C. West, M.L. Tharp and C. Uhl. 1988. Long-term chronosequence of forest succession in the Upper Rio Negro of Columbia and Venezuela. Journal of Ecology 76:938-958.
Kauffman, J.B., C. Uhl and D.L. Cummings. 1988. Fire in the Venezuelan Amazon, 1: Fuel biomass and fire chemistry in the evergreen rainforest of Venezuela. Oikos 53:167-175.
Uhl, C., J.B. Kauffman and D.L. Cummings. 1988. Fire in the Venezuelan Amazon, 2: Environmental conditions necessary for forest fires in the evergreen rainforest of Venezuela. Oikos 53:176-184.
Uhl, C., K. Clark, N. Dezzeo, and P. Maquirino. 1988. Vegetation dynamics in Amazonian treefall gaps. Ecology 69:751-763.
Uhl, C., R. Buschbacher and E.A.S. Serrao. 1988. Abandoned pastures in eastern Amazonia, I: Patterns of plant succession. Journal of Ecology 76:663-681.
Buschbacher, R., C. Uhl, and E.A.S. Serrao. 1988. Abandoned pastures in eastern Amazonia, II: Nutrient stocks in the soil and vegetation. Journal of Ecology 76:682-699.
Uhl, C. and S. Subler. 1988. Asian farmers: Stewards of Amazonia. Garden 12:16-20.
Uhl, C. and I.C. Guimaraes Viera. 1989. Ecological impacts of selective logging in the Brazilian Amazon: A case study from the Paragominas region of the State of Para. Biotropica 21:98-106.
Uhl, C. and I.C. Guimaraes Viera. 1989. Seleçao predatoria. Ciencia Hoje 10:34-41.
Uhl, C., D. Nepstad, R. Buschbacher, K. Clark, B. Kauffman, and S. Subler. 1989. Disturbance and regeneration in Amazonia: Lessons for sustainable land use. The Ecologist 19:235-241.
Uhl, C., J. Boone Kauffman and E. Dias da Silva. 1990. Os caminhos do fogo na Amazonia. Ciencia Hoje 11:24-32.
Uhl, C., and J. B. Kauffman. 1990. Deforestation, fire susceptibility, and potential tree responses to fire in the eastern Amazon. Ecology 71:437-449.
Reich, P.B., C. Uhl, M.B. Walters, and D.S. Ellsworth. 1991. Leaf lifespan as a determinant of leaf structure and function among 23 tree species in Amazonian forest communities. Oecologia (Berlin) 86:16-24.
Uhl, C., D. Nepstad, J.M. Cardoso da Silva, and I. Vieria. 1991. Restauraçao da floresta em pastagens degradadas. Ciencia Hoje 13(76):22-31.
Nepstad, D., C. Uhl, and E.A.S. Serrao. 1991. Recuperation of a degraded Amazonian landscape. Forest recovery and agricultural restoration. Ambio 20:248-255.
Uhl, C., A. Verissimo, M. Mattos, Z. Brandino, and I.C.G. Vieira. 1991. Social, economic and ecological consequences of logging in an Amazon frontier: The case of Tailandia. Forest Ecology and Management 46:243-273.
Verissimo, A., M. Mattos, R. Tarifa, P. Barreto, and C. Uhl. 1992. Logging impacts and prospects for sustainable forest management in an old Amazonian frontier: the case of Paragominas. Forest Ecology and Management 55:169-199.
Uhl, C., A. Verissimo, P. Barreto, M. Mattos, and R. Tarifa. 1992. O desafio da explorago sustentada. Interciencia 14:53-59.
Mattos, M., and C. Uhl. 1994. Economic and ecological perspectives on ranching in the Eastern Amazon. World Development 22:145-158.
Martini, A., N. Rosa, and C. Uhl. 1994. An attempt to predict which Amazonian tree species may be threatened by logging activities. Environmental Conservation 21:152-162.
Vieira, I. C., C. Uhl, and D. Nepstad. 1994. The role of the shrub, Cordia multispicata Cham., as a "succession facilitator" in an abandoned pasture, Paragominas, Amazonia. Vegetation 115:91-99.
Reich, P.B., M.B. Walters, D.S. Ellsworth, and C. Uhl. 1994. Photosynthesis-nitrogen relations in Amazonian tree species, I: Patterns among species and communities. Oceologia 97:62-72.
Verissimo, A., P. Barreto, R. Tarifa, and C. Uhl. 1995. Extraction of a high-value natural resource in Amazonia: The case of mahogany. Forest Ecology and Management 72:39-60.
Almeida, O., and C. Uhl. 1995. Brazil's rural land tax as a tool for stimulating productive and sustainable land use in the Eastern Amazon. Land Use Policy 12:105-114.
Toniolo, A., and C. Uhl. 1995. Economic and ecological perspectives on agriculture in the Eastern Amazon. World Development 23:959-973.
Pollak, M., M. Mattos, and C. Uhl. 1995. A profile of palm heart extraction in the Amazon Estuary. Human Ecology 23:357-385.
Reich, P. B., D. S. Ellsworth, and C. Uhl. 1995. Leaf carbon and nutrient assimilation and conservation in species of differing successional status in an oligotrophic Amazonian forest. Functional Ecology 9:65-76.
Barros, A., and C. Uhl. 1995. Logging along the Amazon River and estuary: Patterns, problems and potential. Forest Ecology and Management 77:87-105.
Almeida, O., and C. Uhl. 1995. Developing a quantitative framework for sustainable resource-use planning in the Brazilian Amazon. World Development 23:1745-1764.
Silva, J.M. Cardosa, C. Uhl, and G. Murray. 1996. Plant succession, landscape management, and the ecology of frugivorous birds in abandoned Amazonian pastures. Conservation Biology 10(2):491-503.
Uhl, C., D. Kulakowski, J. Gerwing, M. Brown, M. Cochrane. 1996. Sustainability: A touchstone concept for university operations, education, and research. Conservation Biology 10(5):1-4.
Nepstad, D., C. Uhl, C. Pereisa, and J.M. da Silva. 1996. A comparative study of tree establishment in abandoned pastures and mature forest of eastern Amazonia. Oikos 76:25-39.
Arima, E. and C. Uhl. 1997. Ranching in the Brazilian Amazon in a national context: Economics, policy and practice. Society and Natural Resources.
Barreto, P. P. Amaral, E. Vidal, C. Uhl. 1997. Costs and benefits of forest management for timber production in eastern Amazonia. Forest Ecology and Mangement 108: 9-26.
Johns, J., P. Barreto, and C. Uhl. 1996 Logging damage in planned and unplanned logging operations and its implications for sustainable timber production in the Eastern Amazon. Forest Ecology and Management. 89: 59-77.
Uhl, C., P. Amaral, P. Barreto, A. Barros, J. Gerwing, J. Johns, C. Souza Jr., A. Verissimo and E. Vidal. 1997. The role of information in natural resource management: The case of logging in the Brazilian Amazon. Bioscience 47: 160-168.
Bezerra, O., A. Verissimo and C. Uhl. 1996. The potential role of gold mining in the sustainable development of some regions of Amazonia. Natural Resources Forum.20:305-317.
Holdsworth, A.R. and C. Uhl. 1997. Fire in eastern Amazonian selectively logged rain forest and the potential for fire reduction. Ecological Applications. 7: 713-725.
Gerwing, J.J. and C. Uhl. 1997. Conversion efficiency and opportunities for waste reduction in the log processing industries of Eastern Para State, Amazonia. Journal of Tropical Forest Products 3: 70-80.
Guimaraes, A. and C. Uhl. 1997. Rural transport in eastern Amazonia: Limitations, options and opportunities. Journal of Rural Studies. 13: 429-440.
Vidal, E., J. Johns, J.J. Gerwing, P. Barreto, and C. Uhl. 1997. Vine management for reduced-impact logging in eastern Amazonia. Forest Ecology and Management.
Verissimo, A., C. Souza, S. Stone, and C. Uhl. 1998. Zoning of timber extraction in the Brazilian Amazon: A test case using Para State. Conservation Biology 12: 128-136.
Uhl, C. 1998. Perspectives on Wildfire in the Humid Tropics. Conservation Biology. 12: 943-43.
Uhl, C., D. Nepstad. 2000. Amazonia at the Millennium. Intercienceia 25: 159-164.
Gerwing, J. and C. Uhl. 2002. Pre-logging liana cutting reduces liana regeneration in logging gaps in the eastern Brazilian Amazon. In press: Ecological Applications 12: 1642-1651.
Laughlin, D. and C. Uhl. The Xeric Limestone Prairies of Pennsylvania. Castanea.
Plowden, C., C. Uhl and F. De Assis Oliveira. Alipumilio (Diptera: Syrphidae) fly association with Burseraceae tree resins in the eastern Brazilian Amazon. In press: Journal of Natural History.
Plowden, C. C. Uhl and F. De Assis Oliveira. The Ecology and Harvest Potential of Titica Vine Roots (Heteropsis flexuosa: Araceae) in the Eastern Brazilian Amazon. In press: Forest Ecology and Management.
Pearce, J. and C. Uhl. Getting It Done: Effective Sustainable Policy Implementation at the University Level. In press: Planning for Higher Education.
Reich, P., D. Ellsworth C. Uhl, M. Walters, and L. Prugh. 2004. Leaf Demography and Phenology of an Amazon Rain Forest: A Census of 40,000 Leaves of 23 Tree Species Ecological Monographs.
P. Sheikh, C. Uhl 2004 Airplane Noise: A Pervasive Disturbance in Pennsylvania Parks, USA. Journal of Sound and Vibration Article 274: 411-420.
Nitin D. Rai, C. F. Uhl 2004. Forest Product Use, Conservation and Livelihoods: The Case of Uppage Fruuit Harvest in the Western Ghats, Conservatation and Society 2: 289-313.
C. Plowden, C. Uhl, F. De Assis Oliveira 2004 Alipumilio (Diptera: Syrphidae) fly association with Burseraceae tree resins in the eastern Brazilian. Journal of Natural History.
Uhl, C. 2006. The Last Class. College Teaching: 53: 165-166.
Book Chapters
Uhl, C., C. F. Jordan, and R. Herrera. 1982. Nutrients as a major constraint to sustained yield forest production in the Upper Rio Negro region of the Amazonian Basin. Pages 143-157 in E. G. Hallsworth, ed. Socio-economic affects and restraints of tropical forest management. John Wiley and Sons, New York.
Uhl, C., C. F. Jordan, and F. Montagnini. 1983. Traditional and innovative approaches to agriculture on Amazon Basin Oxisols. Pages 73-98 in R. Todd, ed. Nutrient cycling in agroecosystems. Special Publication No. 23. University of Georgia, College of Agriculture Experiment Stations.
Herrera, R., E. Medina, H. Klinge, C. Jordan, and C. Uhl.b 1984. Nutrient retention mechanisms in tropical forests: the Amazon Caatinga San Carlos Pilot Project, Venezuela. Pages 85-97 in F. D. Castri, F. W. G. Baker, and M. Hadley, eds. Ecology in Practice, Part I: Ecosystem Management. International Publishing Limited, UNESCO, Paris.
Buschbacher, R., C. Uhl, and E. A. S. Serrao. 1987. Large-scale development in eastern Amazonia. Pages 90-99 in C. F. Jordan, ed. Amazonian rainforests: ecosystem disturbance and recovery. Springer-Verlag, New York.
Uhl, C. 1988. Restoration of degraded lands in the Amazon Basin. In E.O. Wilson, ed. Biodiversity. National Academy Press, Washington, DC.
Uhl, C., R. Buschbacher, K. Clark, B. Kauffman, D. Nepstad, and S. Subler. 1990. Natural and anthropogenic disturbances in Amazonia: The biological context for designing sustainable land-use systems. In A. Anderson, ed. Alternatives to deforestation in Amazonia. Columbia University Press, New York.
Uhl, C., A. Verissimo, M. Mattos, Z. Brandino, and R. Tarifa. 1990. Wood as an economic catalyst to ecological change in Amazonia. U.F. Working Paper Series.
Uhl, C., O. Bezerra, and A. Martini. 1993. An ecosystem perspective on threats to biodiversity in eastern Amazonia, Para State. Pages 213-231 in C. S. Potter, J. I. Cohen, and D. Janczewski, eds. Perspectives on Biodiversity: Case studies of genetic resource conservation and development. AAAS Press, Washington, DC.
Uhl, C., A. Verissimo, P. Barreto, M. Mattos, and R. Tarifa. 1994. Lessons from the aging Amazon frontier: Opportunities for genuine development. Pages 287-303 in K. C. Kim and R. D. Weaver, eds. Biodiversity and Landscapes: A paradox of humanity. Cambridge University Press.
Nepstad, D.C., P.R. Moutinho, C. Uhl, I.C. Vieira, and J.M.C. da Silva. 1996. The ecological importance of forest remnants in an eastern Amazonian frontier landscape. Pages 133-155 in J. Schelhas and R. Greenberg, eds. Forest patches in tropical landscapes. Island Press.
Berardo, K., C. Uhl, and A. Verissimo. 1996. Pará in the 21st Century: Natural Resource Development and Management. This is being published as a book by Bank of Amazonia (BASA). English version available upon request.
Plowden, C., C. Uhl and F. de Assis Oliveira. 2002. Breu Resin Harvest be Tembe Indians and its dependence on a bark-boring beetle. Pages 365-389 in J. R. Stepp, F. S. Wndham and R. K. Zarger (eds.) Ethnobiology and Bicultural Diversity. University of Georgia Press.
Uhl, C. 2003 Process and Practice: Creating the Sustainable University. In. P. Barlett and G. Chase (eds.). Strategies for Sustainability: Stories from the Ivory Tower. MIT Press
Uhl, C. with D. L. Stuchul 2011. Teaching as if Life Matters: The Promise of a New Education Culture. The Johns Hopkins University Press, Baltimore, MD
Uhl, C. Developing Ecological Consciousness: The End of Separation (Second Edition). 2013. Rowman and Littlefield, Lanham, MD