Poulsen, J.R., C. Rosin, S.E. Koerner, E. Blanchard, J. Callejas, A. Meier, E. Mills, S. Moore, C. Nunez, M. Sowers. 2018. The ecological consequences of declines in forest elephants for Afrotropical forests. Conservation Biology. pdf
Hawley, C.R., C. Beirne, A. Meier, J.R. Poulsen. In press. Conspecific investigation of a deceased forest elephant (Loxodonta cyclotis). Pachyderm.
Slik, F., et al. 2018. Phylogenetic classification of the world’s tropical forests. Proceedings of the National Academy of Sciences 115: 1837-1842. pdf
Stimpson, A., Islam, R., Cummings, M., and J.R. Poulsen. 2018. Understanding how drone noise may affect wildlife studies. Unmanned Systems: 20-21.
Rosin, C., J.R. Poulsen, V. Swamy, A. Granados. 2017. A pantropical assessment of vertebrate physical damage to forest seedlings and the effects of defaunation. Global Ecology and Conservation 11: 188-195. pdf
Poulsen, J.R., S.E. Koerner, S. Moore, V.P. Medjibe, S. Blake, C.J. Clark, M.E. Akou, M. Fay, A. Meier, J. Okouyi, C. Rosin, L.J.T. White. 2017. Conservation ‘nightmare’: Poaching empties a Central African wilderness of forest elephants. Current Biology 27:R134-R135. pdf
Austin, K., M. Lee, C.J. Clark, B. Forester, D. Urban, L.J.T. White, P. Kasibhatla, J.R. Poulsen. 2017. An Assessment of High Carbon Stock and High Conservation Value Approaches to Sustainable Oil Palm Cultivation in Gabon. Environmental Research Letters 12:014005. pdf
Daniel J. Ingram, Lauren Coad, Katherine A. Abernethy, Fiona Maisels, Emma J. Stokes, Kadiri S. Bobo, Thomas Breuer, Edson Gandiwa, Andrea Ghiurghi, Elizabeth Greengrass, Tomas Holmern, Towa O. W. Kamgaing, Anne-Marie Ndong Obiang, John R. Poulsen, Judith Schleicher, Martin R. Nielsen, Hilary Solly, Carrie L. Vath, Nathalie van Vliet, Matthias Waltert, Charlotte Whitham, David S. Wilkie, Jӧrn P.W. Scharlemann. 2017. Using local-scale data to assess the exploitation of pangolins across Sub-Saharan Africa. Conservation Letters. http://onlinelibrary.wiley.com/doi/10.1111/conl.12389/epdf.
Burton, M.E.H., J.R. Poulsen, M.E. Lee, V.P. Medjibe, C. Stewart, A. Venkataraman, L.J.T. White. 2017. Reducing carbon emissions from forest conversion for oil palm agriculture in Gabon. Conservation Letters 10(3): 297-307. pdf
Sullivan, M.J.P., Talbot, J., Lewis, S.L., Phillips, O.L., et al. 2016. Diversity and carbon storage across the world’s tropical forests. Scientific reports 7:39102.pdf
Poulsen, J.R. 2017. No ‘Dear John Letter’ Here – These Guys Are Committed to Saving the African Jungles: The Arising Researcher. Bulletin of the Ecological Society of America. 98:36-37. pdf
Poulsen, J.R., S.E. Koerner, Z. Miao, V. Medjibe, L.J.T. White. 2016. Large liana abundance and biomass increase with tree biomass in Gabon. Global Biogeography and Ecology: 26(4) 472-485. pdf
Rosin, C. and J.R. Poulsen. 2016. Hunting-induced defaunation drives increased seed predation and decreased seedling establishment of commercially important tree species in an Afrotropical forest. Forest Ecology and Management 382: 206-213. pdf
Carlson, B., S.E. Koerner, V.P. Medjibe, L.J.T. White, J.R. Poulsen. 2016. Selective logging and large trees increase deadwood stocks in Gabon. Global Change Biology. pdf
Koerner, S.E., J.R. Poulsen, E. Blanchard, J. Okouyi, C.J. Clark. 2016. Hunting alters vertebrate community composition and reduces diversity along a defaunation gradient from rural villages in Gabon. In press. Journal of Applied Ecology. pdf
Upstill-Goddard, R.C., Salter, M.E., Mann, P.J., Barnes, J., Poulsen, J.R., Dinga, B., Fiske, G.J., and R.M. Holme. 2016. The riverine source of tropospheric CH4 and N2O from the Republic of Congo, Western Congo Basin. Biogeosciences.
Rosin, C. and J.R. Poulsen. 2016. Telemetric tracking of scatterhoarding and seed fate in a Central African forest. Biotropica. pdf
Miao, Z., S.E. Koerner, V.P. Medjibe, J.R. Poulsen. Wanted: New allometric equations for large lianas and African lianas. 2016. Biotropica. 45(5): 561-564. pdf
Ngama, S., L. Korte, J. Bindelle, C. Vermeulen, J.R. Poulsen. How bees deter elephants: beehive trials with forest elephants (Loxondonta african cyclotis) in Gabon. 2016. PLoS One 11(5): e0155690. doi:10.1371/journal.pone.0155690. pdf
Spencer-Jones, C.L., T. Wagner, B.J. Dinga, E. Schefub, P.J. Mann, J.R. Poulsen, R.G.M. Spencer, J.N. Wabakanghanzi, H.M. Talbot. 2015. Bacteriohopanepolyols in tropical soils and sediments from the Congo River catchment area. Organic Geochemistry 89-90: 1-13. pdf
Slik et al. 2015. An estimate of the number of tropical tree species. Proceedings of the National Academy of Sciences. 112: 7472-7477. pdf
Taylor et al. 2015. Synthesizing bushmeat research effort in West and Central Africa: A new regional database. Biological Conservation 181: 199-205. pdf
Medjibe, V.M., J.R. Poulsen, C.J. Clark, O. Mbani. 2014. Natural regeneration of selected tropical timber species in northern Republic of Congo. Journal of African Ecology 1-12. DOI: 10.1111/aje.12167. pdf
Lamperti, A.M. et al. 2014. Diet selection is related to breeding status in two frugivorous hornbill species of Central Africa. Journal of Tropical Ecology 30: 273-290. pdf
Talbot, H.M., L. Handley, C.L. Spencer-Jones, J.B. Dinga, E. Schefub, P.J. Mann, J.R. Poulsen, R.G.M. Spencer, J.N. Wabakanghanzi, T. Wagner. 2014. Variability in aerobic methane oxidation over the past 1.2 Myrs recorded in microbial biomarker signatures from Congo fan sediments. Geochimica et Cosmochimica Acta 133: 387-401. pdf
Mann, P.J., R.G.M. Spencer, B.J. Dinga, J.R. Poulsen, P.J. Hernes, G. Fiske, M.E. Salter, Z.A. Wang, K.A. Hoering, J. Six, R.M. Holmes. 2014. The biogeochemistry of carbon across a gradient of streams and rivers within the Congo Basin. Journal of Geophysical Research: Biogeosciences 119, doi:10.1002/2013JG002442. pdf
Poulsen, J.R., C.J. Clark, T.M. Palmer. 2013. Ecological erosion of an Afrotropical forest and potential consequences for tree recruitment and forest biomass. Biological Conservation 163: 122-130. pdf
Slik, F., et al. 2013. Large trees drive forest aboveground biomass variation in moist lowland forests across the tropics. Global Ecology and Biogeography. pdf
Lewis, S.L., et al. 2013. Aboveground biomass and structure of 259 African tropical forests. Philosophical Transaction of the Royal Society 368:20120295. pdf
Clark, C.J., J.R. Poulsen, D.J. Levey. 2013. Roles of seed and establishment limitation in determining patterns of Afrotropical tree recruitment. PLOS One 8(5): e63330. dpi: 10.1371/journal.pone.0063330. pdf
Wang, A., Dinga, J.B., Mann, P.J., Hoering, K.A., Poulsen, J.R., Robert, G.M., and R.M. Holmes. 2013 Inorganic carbon speciation and fluxes in the Congo River. Geophysical Research Letters 40: 511-516. pdf
Moles, A. et al. 2013. Correlations between physical and chemical defences in plants: Trade-offs, syndromes, or just many different ways to skin a herbivorous cat? New Phytologist 198: 252-263. pdf
Poulsen, J.R., C.J. Clark, and B.M. Bolker. 2012. Experimental manipulation of seed shadows of a tropical tree determines drivers of recruitment Ecology 93: 500-510. pdf
Laurance, W.F. et al. 2012. Averting biodiversity collapse in tropical forest protected areas. Nature 489: 290-294. pdf
Clark, C.J., J.R. Poulsen, and D.J. Levey. 2012. Vertebrate herbivory impacts seedling recruitment more than niche partitioning, distance- or density-dependent mortality. Ecology 93: 554-564. pdf
Poulsen, J.R., C.J. Clark, and B.M. Bolker. 2011. Decoupling the effects of logging and hunting on an Afrotropical animal community. Ecological Applications 21: 1819-1836. pdf
Moles, A. et al. (47 authors). 2011. Putting plant resistance traits on the map: a test of the idea that plants are better defended at lower latitudes. New Phytologist 191: 777-788. pdf
Levey, D.J., G.A. Londono, J. Ungvari-Martin, M.R. Hiersoux, J.E. Jankowski, J.R. Poulsen, C.M. Stracey, and S.K. Robinson. 2009. Urban mockingbirds quickly learn to identify individual humans. Proceedings of the National Academy of Sciences 106: 8959-8962. pdf
Poulsen, J.R. C.J. Clark, G. Mavah, and P.W. Elkan. 2009. Bushmeat supply and consumption in a tropical logging concession in northern Congo. Conservation Biology 23: 1597-1608. pdf
Clark, C.J., J.R. Poulsen, R. Malonga, and P.W. Elkan. 2009. Can wildlife management in logging concession extend the “conservation estate” of tropical forests? Conservation Biology 23: 1281-1293. pdf
Bolker, B.W., M. Brooks, C.J. Clark, S. Geange, J.R. Poulsen, H. Stevens, and J. White. 2009. Generalized Linear Mixed Models in Ecology and Evolution. Trends in Ecology and Evolution 24: 127-135. pdf
Poulsen, J.R., Osenberg, C.W., Clark, C.J., and D.J. Levey. 2007. Plants as reef fish: An examination of the functional form of seedling recruitment. American Naturalist 170: 167-183. pdf
Clark, C.J., J.R. Poulsen, Levey, D.J., and C.W. Osenberg. 2007. Are plant populations seed limited?: A meta-analysis of seed augmentation studies. American Naturalist 170: 128-142. pdf
Clark, C.J., J.R. Poulsen, B.W. Bolker, E.F. Connor, and V.T. Parker. 2005. Comparative seed shadows of bird-, monkey-, and wind-dispersed tree species in a Central African tropical forest. Ecology 86, 2684 – 2694. pdf
Chapman, C.A., L.J. Chapman, T.T. Struhsaker, A.E. Zanne, A.E., C.J. Clark and J.R. Poulsen. 2005. A long-term evaluation of fruit phenology: importance of climate change. Journal of Tropical Ecology 21: 31-45. pdf
Poulsen, J.R. and C.J. Clark. 2004. Densities, distributions, and seasonal movements of gorillas and chimpanzees in swamp forest in northern Congo. International Journal of Primatology 25, 285-306. pdf
Clark, C.J., J.R. Poulsen, and V.T. Parker. 2004. Fruiting trees as dispersal foci in closed canopy tropical forests. Oecologia 139: 66-75. pdf
Poulsen, J.R., C.J. Clark, E.F. Connor, and T.B. Smith. 2002. Differential resource use by primates and hornbills: implications for seed dispersal. Ecology 83, 228-240. pdf
Poulsen, J.R., C.J. Clark, and T.B. Smith. 2001. Seasonal variation in the feeding ecology of the grey-cheeked mangabey Lophocebus albigena in Cameroon. American Journal of Primatology 54, 91-105. pdf
Poulsen, J.R., C.J. Clark, and T.B. Smith. 2001. Seed dispersal by a primate community in the Dja Reserve, Cameroon. Journal of Tropical Ecology 17, 787-808. pdf
Poulsen, J.R. and C.J. Clark 2001. Predation on mammals by grey-cheeked mangabeys Lophocebus albigena. Primates 42: 391-394.
Clark, C.J., Poulsen, J.R., and V.T. Parker. 2001. The role of arboreal seed dispersal groups on the seed rain of a lowland tropical forest. Biotropica 33, 606-620. pdf
This book describes an emerging model of conservation: the integration of the private sector into partnerships to protect biodiversity and improve forest management. In the last few years, such partnerships have been created in nearly every sector of resource extraction. To date, however, there are no good examples of how such partnerships work nor whether they are actually beneficial to biodiversity conservation. This book describes and analyzes the history, strategies, activities and management systems of a partnership between an international conservation organization (Wildlife Conservation Society), a logging company (Congolaise Industrielle des Bois), and government (Republic of Congo). Together these organizations formed the Buffer Zone Project, a novel alliance to reduce the negative impacts of logging on wildlife and biodiversity in timber concessions adjacent to the renowned Nouabalé-Ndoki national park, Republic of Congo. Ten years later, the Buffer Zone project has produced concrete conservation results as well as lessons to inspire and guide future conservation efforts. The book discusses the principles of conservation and of partnership, the lessons learned, and provides the technical and methodological details to serve as a guide for replicating the project. Even though it focuses on resource management in a timber concession, the issues addressed, examples given, and lessons learned from this initiative cut across industries and are relevant to mining, oil, agriculture, and other sectors. Biodiversity conservation in a changing world requires innovative thinking and audacious efforts. In the coming decades, as the reach of industry expands to previously unexploited forests, the most important conservation might be done outside of protected areas and it will likely include partnerships with industry that were once thought improbable.
Book chapters and technical reports
REFEREED BOOK CHAPTERS
Poulsen, J.R., and C.J. Clark. 2010. Congo Basin timber certification and biodiversity conservation. In: D. Sheil, F.E. Putz, and R.J. Zagt (eds.). Biodiversity conservation in certified forests. Tropenbos International, Wageningen, Netherlands. Pp 55-60.
Poulsen, J.R., C.J. Clark, and G. Mavah. 2007. Wildlife management in a logging concession in Northern Congo: Can livelihoods be maintained through sustainable hunting? Pgs 140-157 in G. Davies and D. Brown (eds.). Bushmeat and Livelihoods. Blackwell Publishing, Oxford, UK.
Kwit, C., D.J. Levey, S.A. Turner, C.J. Clark, and J.R. Poulsen. 2007. Out of one shadow and into another: Causes and consequences of spatially contagious seed dispersal by frugivores. In: A.J. Dennis, E.W. Schupp, R. Green, and D. Westcott (eds.). Seed Dispersal: Theory and Its Application in a Changing World. CAB International Publishing, Wallingford, UK.
Chapman, C.A., L.J. Chapman, A.E. Zanne, J.R. Poulsen, and C.J. Clark. 2005. A 12-year phenological record of fruiting: implications for frugivore populations and indicators of climate change. In: J. Boubli, J.L. Dew, and K. Milton (eds.). Tropical fruits and frugivores. Springer, Netherlands. Pp 75-92.
SELECTED TECHNICAL REPORTS
Poulsen, J.R., C.J. Clark, and B.K. Curran. 2010. Forest concession land use planning: Lessons learned from Congolaise Industrielles des Bois (CIB) – PROGEPP Project. D. Yanggen, K. Angu, and N. Tchamou (eds). Landscape-scale conservation in the Congo Basin: Lessons learned from the Central Africa Regional Program for the Environment (CARPE). IUCN and USAID.
Poulsen, J.R. 2009. Building private-sector partnerships for conservation (PSPCs): Lessons learned from the collaboration between WCS, CIB, and the Republic of Congo in forestry concessions. USAID and WCS.
Poulsen, J.R., C.J. Clark, and R. Malonga. 2005. Recensement et distribution des grands mammifères et activités humaines dan les concessions forestières de la CIB. Report to Congolaise Industrielle des Bois, Government of Congo, Wildlife Conservation Society.
Poulsen, J.R. and C.J. Clark. 2002. Feasibility study of the Lac Télé Community Reserve. WCS.