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Dr Owen T.
Lewis
Department of
Zoology
University of
Oxford
South Parks
Road
Oxford OX1 3PS
UK
owen.lewis@zoo.ox.ac.uk
Tel:
+44 (0)1865 271162
Fax: +
44 (0)1865 310447
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I am
a community ecologist and
conservation biologist with a particular interest in tropical forest ecosystems.
I have wide
research interests in
population and community ecology and conservation biology. I
welcome enquiries from well-qualified prospective graduate
students interested in working in these areas.
Publications
(please
email me for reprints)
You can also view
my Google Scholar publication profile.
2013
Lewis, O.T., Ewers, R.M., Lowman, M. & Malhi, Y.
(2013).
Conservation of tropical forests: maintaining ecological integrity and
resilience. In: Key Topics in Conservation Biology, ed. D.W. MacDonald
& K.J. Willis. In Press.
Sutherland, W. J., Freckleton,
R.P., Godfray, H.C.J., Beissinger, S.R., Benton, T., Cameron, D.D.,
Carmel, Y., Coomes, D.A., Coulson, T., Emmerson, M.C., Hails, R.S.,
Hays, G.C., Hodgson, D. J., Hutchings, M. J., Johnson, D., Jones, J.
P.G., Keeling, M.J., Kokko, H., Kunin, W.E., Lambin, X., Lewis, O.T.,
Malhi, Y., Mieszkowska, N., Milner-Gulland, E.J., Norris, K.,
Phillimore, A.B., Purves, D.W., Reid, J.M., Reuman, D.C., Thompson, K.,
Travis, J.M.J., Turnbull, L.A., Wardle, D.A. and Wiegand, T. (2013).
Identification of 100 fundamental ecological questions. Journal of
Ecology, DOI: 10.1111/1365-2745.12025
2012
Beynon, S.A., Slade, E.M., Mann D.J. & Lewis, O.T. (2012).
Species-rich dung beetle communities buffer ecosystem services in
perturbed agro-ecosystems. Journal of Applied Ecology 49,
1365–1372.
Beynon, S.A., Peck, M., Mann D.J. & Lewis, O.T. (2012)
Consequences of alternative and conventional endoparasite control in
cattle for dung-associated invertebrates and ecosystem functioning.
Agriculture, Ecosystems & Environment 162, 36–44.
Novotny, V., Miller, S.E., Hrcek, J., Baje, L., Basset,
Y., Lewis,
O.T., Stewart, A.J.A., & Weiblen, G.D. (2012). Insects on plants:
Explaining the paradox of low diversity within specialist herbivore
guilds. The American Naturalist 179, 351-62.
Swinfield, T., Lewis, O.T, Bagchi, R. & Freckleton.
R.P. (2012).
Consequences of changing rainfall for fungal pathogen-induced mortality
in tropical tree seedlings. Ecology and Evolution 2, 1408–1413
Klapwijk, M.J. & Lewis, O.T. (2012). Host-parasitoid
dynamics in a
fragmented landscape: holly trees, holly leaf miners and their
parasitoids. Basic and Applied Ecology 13, 94–105.
Lawson, C., Mann, D.J. & Lewis, O.T. (2012). Dung
beetles reduce
clustering of tropical tree seedlings. Biotropica 44, 271-275.
Comont, R.F, Roy, H.E., Lewis, O.T., Harrington, R.,
Shortall, C.,
& Purse, B.V. (2012). Using biological traits to explain ladybird
distribution patterns. Journal of Biogeography j.1365-2699.2012.02734.x
De Sassi, C., Lewis, O.T., & Tylianakis, J.M.
(2012). Plant-mediated and nonadditive effects of two global change
drivers on an insect herbivore community. Ecology 93:1892–1901.
2011
Slade, E.M., Mann, D.J., and Lewis, O.T. (2011).
Biodiversity and
ecosystem function of tropical forest dung beetles under contrasting
logging regimes. Biological Conservation 144, 166-174.
Bagchi, R., Philipson, C.D., Slade, E.M., Hector, A.,
Phillips, S.,
Villanueva, J.F., Lewis, O.T., Lyal, C.H.C., Nilus, R., Madran, A.,
Scholes, J.D., & Press, M.C. (2011) Impacts of logging on density
dependent predation of dipterocarp seeds in a Southeast Asian
rainforest. Philosophical Transactions of the Royal Society, Series B.
(in press).
Gripenberg, S., Hamer, N., Brereton, T., Roy, D.B. &
Lewis, O.T.
(2011). A novel parasitoid and a declining butterfly: cause or
coincidence? Ecological Entomology 36, 271-281.
Klapwijk, M.J. & Lewis, O.T. (2011). Spatial ecology
of multiple
parasitoids of a patchily-distributed host: implications for species
coexistence. Ecological Entomology 36: 212-220.
Lewis, O.T. & Senior, M.J.M. (2011). Assessing
conservation status
and trends for the world’s butterflies: the Sampled Red
List Index approach. Journal of Insect Conservation, 15, 121-128.
2010
Novotny, V., Miller, S.E., Baje, L., Balagawi, S.,
Basset, Y., Cizek,
L., Craft, K.J., Dem F., Drew, R.A.I., Hulcr, J., Leps, J., Lewis,
O.T., Pokon, R., Stewart, A.J.A. & Weiblen, G.D. (2010).
Guild-specific patterns of species richness and host specialization in
plant herbivore food webs from a tropical forest. Journal of Animal
Ecology 79, 1193–1203.
Bagchi R., Swinfield T., Gallery R.E., Lewis O.T.,
Gripenberg S.,
Narayan L., Freckleton R.P. (2010). Testing the Janzen-Connell
mechanism: pathogens cause overcompensating density dependence in a
tropical tree. Ecology Letters 13, 1262-1269.
Marsh, C.J., Lewis, O.T., Said, I. & Ewers, R.M.
(2010).
Community-level diversity modelling of birds and butterflies on
Anjouan, Comoro Islands. Biological Conservation 143: 1364-1374.
Staniczenko, P.P., Lewis, O.T., Jones, N.S. &
Reed-Tsochas, F.
(2010). Structural dynamics and robustness of food webs. Ecology
Letters 13: 891–899.
2009
Hayes, L., Mann, D.J., Monastyrskii, A.L. & Lewis,
O.T. (2009).
Rapid assessments of tropical dung beetle and butterfly assemblages:
contrasting trends along a forest disturbance gradient. Insect
Conservation and Diversity, 2, 153 - 241.
Klapwijk, M.J., Gröbler, B.C., Ward, K., Wheeler,
D. & Lewis,
O.T. (2009). Influence of experimental warming and shading on
host-parasitoid synchrony. Global Change Biology, 16:102-112.
Paniagua, M.R., Medianero, E. & Lewis, O.T.
(2009). Structure
and vertical stratification of plant galler - parasitoid food webs in
two tropical forests. Ecological Entomology, 34: 310-332.
Lewis, O.T. (2009). Biodiversity change and ecosystem
function in
tropical forests. Basic and Applied Ecology, 10, 97-102.
2008
Lewis, O.T. & Gripenberg, S. (2008). Insect seed
predators and
environmental change. Journal of Applied Ecology, 45, 1593-159
Lewis, O.T., Martin, M & Czaczkes, T.J. (2008).
Effects of trail
gradient on leaf tissue transport and load size selection in
leaf-cutter ants. Behavioral Ecology, 19, 805-809.
Basset, Y., Missa, O., Alonso A., Miller, S.E.,
Curletti, G., De Meyer,
M., Eardley, C., Lewis, O.T., Mansell, M.W., Novotny, V. & Wagner,
T. (2008). Changes in arthropod assemblages along a wide gradient of
disturbance in Gabon. Conservation Biology, 22, 1552-63. [on-line here]
Basset, Y. Missa, O., Alonso, A., Miller, S.E.,
Curletti, G., De Meyer,
M., Eardley, C., Lewis, O.T., Mansell, M.W., Novotny, V., & Wagner,
T. (2008). Choice of metrics for studying arthropod responses to
habitat disturbance: one example form Gabon. Insect Conservation and
Diversity 1, 55-66.
Gröbler, B.C. & Lewis, O.T. (2008). Response of
native
parasitoids to a range-expanding moth. Ecological Entomology, 33,
453-463.
Menéndez, R., González-Megías, A.,
Lewis, O.T.,
Shaw, M.R. & Thomas, C.D. (2008). Escape from natural enemies
during climate-driven range expansion: a case study. Ecological
Entomology, 33: 413-421.
Klapwijk, M.J. and Lewis, O.T. (2008). Effects of
climate change and
habitat fragmentation on trophic interactions. In: Tropical Biology and
Conservation, edited by Arturo Bonet and Glória Carrion
Villarnovo. Encyclopedia of Life Support Systems (EOLSS), UNESCO, Eolss
Publishers, Oxford, UK. http://www.eolss.net/
Merrill, R., Gutiérrez, D., Lewis, O.T.,
Gutiérrez, J.,
Diez, S.B. & Wilson, R.J. (2008). Combined effects of climate and
biotic interactions on the elevational range of a phytophagous insect.
Journal of Animal Ecology 77, 145-155.
2007
Slade, E.M., Villanueva, J., Mann, D.J., and Lewis, O.T. (2007).
Experimental evidence for the effects of dung beetle functional group
richness and composition on ecosystem function in a tropical forest.
Journal of Animal Ecology 76,1094-1104.
Basset, Y., Corbara, B., Barrios, H., Cuénoud,
P., Leponce, M.,
Aberlenc, H.-P., Bail, J., Bito, D., Bridle, J.R.,
Castaño-Meneses, G., Cizek, L., Cornejo, A., Curletti, G.,
Delabie, J.H.C., Dejean, A., Didham, R.K., Dufrêne, M., Fagan,
L.L., Floren, A., Frame, D.M., Hallé, F., Hardy, O.J.,
Hernandez, A., Kitching, R.L., Lewinsohn, T.M., Lewis, O.T., Manumbor,
M., Medianero, E., Missa, O., Mitchell, A.W., Mogia, M., Novotny, V.,
Oliveira, E.G. de, Ødegaard, F., Orivel, J., Ozanne, C.M.P.,
Pascal, O., Pinzón, S., Rapp, M., Ribeiro, S.P., Roisin, Y.,
Roslin, T., Roubik, D.W., Samaniego, M., Schmidl, J., Sørensen,
L.L., Tishechkin, A., Van Osselaer, C. & Winchester, N.N.
(2007). IBISCA-Panama, a large-scale study of arthropod
beta-diversity and vertical stratification in a lowland rainforest:
rationale, description of study sites and field methodology. Bulletin
de l'Institut Royal des Sciences Naturelles de Belgique- Entomologie,
77, 39-69.
Yackulic, C. & Lewis, O.T. (2007). Temporal
variation in foraging
activity and efficiency, and the role of hitchhiking behaviour in the
leaf-cutting ant, Atta cephalotes. Entomologia Experimentalis et
Applicata 125, 125-134.
Tylianakis, J.M., Tscharntke, T. & Lewis, O.T.
(2007) Habitat
modification alters the structure of tropical host-parasitoid food
webs. Nature, 445, 202-205.
Stewart, A.J.A., New, T.R. & Lewis, O.T.,(eds.)
(2007). Insect
Conservation Biology. CABI Publishing, Wallingford.
Lewis, O.T. & Stewart, A.J.A. & New, T.R.
(2007). Insect
Conservation Biology: Progress and prospects In: Insect Conservation
Biology (eds A.J.A. Stewart, T.R. New & O.T. Lewis). CABI
Publishing, Wallingford.
Lewis, O.T. & Basset, Y. (2007). Insect Conservation
in Tropical
Forests. In: Insect Conservation Biology (eds A.J.A. Stewart, T.R. New
& O.T. Lewis). CABI Publishing, Wallingford.
pre-2007
Freckleton, R.P. & Lewis, O.T. (2006). Pathogens,
density-dependence and the coexistence of tropical trees.
Proceedings of the Royal Society, Series B, 273, 2909-2916
Bell, T., Freckleton, R.P. & Lewis, O.T. (2006).
Plant pathogens
drive density-dependent mortality in a tropical tree. Ecology Letters
9: 569-574
Lewis, O.T. (2006). Climate change, species-area curves
and the
extinction crisis. Philosophical Transactions of the Royal Society,
Series B. 361: 163-171
Morris, R. J., & Lewis, O.T. & Godfray, H. C. J.
(2005).
Apparent competition and insect community structure: towards a spatial
perspective. Annales Zoologici Fennici 42, 449 - 462
Morris, R.J., Lewis, O.T. and Godfray, H.C.J. (2004).
Experimental
evidence for apparent competition in a tropical forest food web. Nature
428, 310-313
Lewis, O.T., Memmott, J., LaSalle, J., Lyal, C.H.C.,
Whitefoord, C.
& Godfray, H.C.J. (2002). Structure of a diverse tropical forest
insect-parasitoid community. Journal of Animal Ecology 71, 855-873.
Thomas, C.D., Wilson, R.J. and Lewis, O.T. (2002).
Short-term studies
underestimate 30-generation changes in a butterfly metapopulation.
Proceedings of the Royal Society of London, Series B 269, 563-569.
Morris, R.J and Lewis, O.T. (2002). The role of indirect
interactions
in structuring tropical insect communities. Oikos 97, 308-311.
Lewis, O.T. and Thomas, C.D. (2001). Adaptation to
captivity in the
butterfly Pieris brassicae, and the implications for ex situ
conservation. Journal of Insect Conservation 5, 55-63.
Lewis, O.T. (2001) Effect of experimental selective
logging on tropical
butterflies. Conservation Biology 15, 389-400.
Godfray, H.C.J., Lewis, O.T. and Memmott, J. (1999).
Studying insect
diversity in the tropics. Philosophical Transactions of the Royal
Society, Series B 354, 1811-1824.
Thomas, C.D., Glen, S.W.T., Lewis, O.T., Hill, J.K., and
Blakeley, D.S.
(1999). Population differentiation and conservation of endemic races:
the butterfly, Plebejus argus. Animal Conservation 2, 15-21.
Hill, J.K., Thomas, C.D., and Lewis, O.T. (1999). Flight
morphology in
fragmented populations of a rare British butterfly, Hesperia comma.
Biological Conservation 87, 277-283.
Thomas, C.D., Hill, J.K., and Lewis, O.T. (1998).
Evolutionary
consequences of habitat fragmentation in a localized butterfly. Journal
of Animal Ecology 67, 485-497.
Lewis, O.T., Wilson, R.J., and Harper, M.C. (1998).
Endemic butterflies
on Grande Comore: habitat preferences and conservation priorities.
Biological Conservation 85, 113-121.
Lewis, O.T. and Hurford, C. (1997). Assessing the status
of the marsh
fritillary butterfly (Eurodryas aurinia Rott.) - an example from
Glamorgan (UK). Journal of Insect Conservation 1: 159-166.
Lewis, O.T., Thomas, C.D., Hill, J.K., Brookes, M.I.,
Crane, T.P.R.,
Graneau, Y.A., Mallet, J.L.B. and Rose, O.C. (1997). Three ways of
assessing metapopulation structure in the butterfly Plebejus argus.
Ecological Entomology 22: 283-293.
Hill, J.K., Thomas, C.D. and Lewis, O.T., (1996).
Effects of habitat
patch size and isolation on dispersal by Hesperia comma butterflies:
implications for metapopulation structure. Journal of Animal Ecology
65: 725-735.
Thomas, C.D., Baguette, M. and Lewis, O.T. (2000).
Butterfly movement
and conservation in patchy landscapes. In: Behaviour and Conservation
(eds. L.M. Gosling and W.J. Sutherland), pp.85-104. Cambridge:
Cambridge University Press.
Thomas, C.D., Jordano, D., Lewis, O.T., Hill, J.K.,
Sutcliffe, O.L.,
and Thomas, J.A. (1999). Butterfly distributional patterns, processes
and conservation. In: Conservation in a Changing World: integrating
progress into priorities for action (ed. by G.M. Mace, A. Balmford and
J.R. Ginsberg, pp. 107-138. Cambridge: Cambridge University Press.
Research Funding
2012-2015: Natural Environment
Research Council (NERC) Standard Grant (lead
PI in collaboration with Prof. Robert Freckleton, Sheffield),
£406,119: ‘Natural enemies, climate, and the
maintenance of tropical tree diversity’
2010-2011: John Fell Fund (sole
PI in collaboration with Dr Joe Wright, Dr Sofia Gripenberg, Dr Yves
Basset),
£7441: ‘Constructing a Tropical Forest Plant-seed
predator Food Web’
2007-2010: Natural Environment
Research Council (NERC) Standard Grant (lead PI in collaboration with
Prof Robert Freckleton (Sheffield) and Prof Sarah Gurr (Plant Sciences,
Oxford), £541,230: ‘Plant Pathogens and
Tropical Tree Diversity’
2005-2006:
Natural Environment Research Council (NERC) Small Grant (lead PI with
Prof Robert Freckleton), £30,250: ‘Density
dependence and the dynamics of tropical tree seedlings’
2005-2006:
Countryside Council for Wales research contract, £1,000:
‘Effects of climate change on host-parasitoid interactions’
2005-2008: Biotechnology and Biological Sciences Research
Council (BBSRC) Standard Grant (co-PI with Prof. S. Simpson). £237,475: ‘Optimal foraging for multiple
nutrients: a comparison within and between feeding guilds’
2002-2004:
Nuffield Awards to Newly Appointed Lecturers (sole PI), £5,000:
‘Host-parasitoid dynamics in a fragmented landscape’
2002-2005:
Leverhulme Project Grant (co-PI with Prof. C.D. Thomas),
£100,792: ‘Climate change and host-parasitoid
interactions’
2002-2005:
Natural Environment Research Council (NERC) New Investigators Award
(sole PI), £51,056: ‘Effects of habitat
fragmentation on insect food webs’
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