Phone: +41 44 632 68 05
I am interested in the processes that maintain biodiversity in natural ecosystems (particularly in the tropics) and how human activity might affect this biodiversity. I also investigate the role of biodiversity in the provision of ecosystem functions and services. My research focuses on four, interconnected, questions:
1) What mechanisms maintain biodiversity in natural systems?
2) How is anthropogenic environmental change affecting biodiversity?
3) How does anthropogenic environmental change affect the processes that maintain species coexistence?
4) How does biodiversity influence ecosystem functioning and in particular the simultaneous provision of multiple ecosystem services?
Biotropica Editorial Board, 2010-present
Reviewer for professional journals: Biotropica, Conservation Biology, Ecology, Ecology Letters, Ecography, Global Change Biology, Journal of Applied Ecology, Journal of Vegetation Science, Journal of Ecology, Methods in Ecology and Evolution, Nature, Oikos, Oecologia, PLoS One.
Conference organiser: British Ecological Society Tropical Ecology Group Annual Meeting, Oxford, 2008.
Bagchi R, Gallery RE, Gripenberg S, Gurr SJ, Narayan L, Addis CE, Freckleton RP & Lewis OT (2014) Pathogens and insect herbivores drive rainforest plant diversity and composition Nature 506, 85-88
Gripenberg S, Bagchi R, Gallery RE, Freckleton RP, Narayan L & Lewis OT (2014) Testing for enemy‐mediated density‐dependence in the mortality of seedlings: field experiments with five Neotropical tree species. Oikos 123, 185-193
Kai Z, Woan TS, Jie L, Goodale E, Kitajima K, Bagchi R & Harrison RD (2014) Shifting Baselines on a Tropical Forest Frontier: Extirpations Drive Declines in Local Ecological Knowledge. PLoS ONE 9(1): e86598
Bagchi R, Crosby M, Huntley B, Hole DG, Butchart SHM, Collingham YC, Kalra M, Rajkumar J, Rahmani A, Pandey M, Gurung H, Trai LT, Quang NV & Willis SG (2013) Evaluating the effectiveness of conservation site networks under climate change: accounting for uncertainty. Global Change Biology 19, 1236-1248
Gamfeldt L, Snall T, Bagchi R, Jonsson M, Gustafsson L, Kjellander P, Ruiz-Jaen MC, Froberg M, Stendahl J, Philipson CD, Mikusinski G, Andersson E, Westerlund B, Andren H, Moberg F, Moen J & Bengtsson J (2013) Higher levels of multiple ecosystem services are found in forests with more tree species. Nat Commun 4, 1340
Swinfield T, Lewis OT, Bagchi R & Freckleton RP (2012) Consequences of changing rainfall for fungal pathogen-induced mortality in tropical tree seedlings. Ecology and Evolution, 2:1408-1413
Paine, CET, Stenflo, M, Philipson, CD, Saner, P, Bagchi, R, Ong, RC & Hector, A (2012) Differential growth responses in seedlings of ten species of Dipterocarpaceae to experimental shading and defoliation. J Trop. Ecol. 28:377-384
Bagchi R, et al. (2011) Impacts of logging on density dependent predation of dipterocarp seeds in a Southeast Asian rainforest. Philos. T. Roy. Soc. B.
Bagchi R, et al. (2011) Spatial patterns reveal negative density dependence and habitat associations in tropical trees. Ecology,92:1723-1729
Bagchi R, Swinfield T, Gallery RE, Lewis OT, Gripenberg S, Narayan L, Freckleton RP (2010). Testing the Janzen-Connell mechanism: pathogens cause overcompensating density dependence in a tropical tree. Ecol. Lett., 13, 1262-1269. (Cover article)
Hautier Y, Saner P, Philipson CD, Bagchi R, Ong RC, Hector A. (2010) Effects of seed predators of different body size on seed mortality in Bornean logged forest. PLoS One, 5:e11651
Hector, A, Hautier, Y, Saner, P, Wacker, L, Bagchi, R, et al. (2010) Diversity and stability:A multisite test of the insurance hypothesis using experimental grassland communities. Ecology, 91, 2213-2220
Bagchi R, Press, MC & Scholes, JD (2010) Evolutionary history and distance dependence control survival of dipterocarp seedlings. Ecol. Lett. 13:51-59
Hector, A & Bagchi, R (2007) Biodiversity and ecosystem multifunctionality. Nature 448:188-190
Pilkington, MG, Caporn, SJM, Carroll, JA, Cresswell, N, Lee, JA, Emmett, BA & Bagchi, R (2007) Phosphorus supply influences heathland responses to atmospheric nitrogen deposition. Environ. Pollut. 148:191-200
Dent, DH, Bagchi, R, Robinson, D, Majalap, N & Burslem, DFRP (2006) Nutrient fluxes via litterfall and leaf litter decomposition vary across a gradient of soil nutrient supply in a lowland tropical rain forest. Plant Soil 288:197-215
Wells, K & Bagchi, R (2005) Eat in or take away - seed predation and removal by rats (Muridae) during a fruiting event in a dipterocarp rainforest. Raffles B Zool, 53:125-130.
We were interested in the roles of biotic and abiotic drivers in determining the fine-scale distributions of tree species in the Great Smoky Mountains National Park .
Main collaborators: Jason Fridley and Mark Lesser.
The project modelled bird distributions and predicting the response of community diversity to projected climatic change in the Eastern Himalayas and Lower Mekong
Main collaborators: Steve Willis, Brian Huntley, Mike Crosby and BirdLife International.
Funding source: MacArthur foundation
We investigated the influence of insects and pathogens on maintaining coexistence of plant species in tropical forests
Main collaborators: Owen Lewis, Rob Freckleton, Sarah Gurr, Rachel Gallery, Sofia Gripenberg and Tom Swinfield.
Funding source: NERC, UK.
This project evaluated the role of plant diversity for providing multiple ecosystem functions simultaneously
Main collaborators: Andy Hector and the Biodepth project.
I investigated the role of negative density dependence in maintaining tree diversity in three Southeast Asian tropical rain forests
Supervisors: Malcolm Press and Julie Scholes
Funding source: NERC, UK.
My honours thesis analysed spatial patterns of tropical trees in order to determine if there was a signal of negative density dependence
Supervisors: Richard Law
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