Derek Tittensor

Ph.D., Biology


Derek Tittensor is a Senior Marine Biodiversity Scientist at the United Nations Environment Programme World Conservation Monitoring Centre (UNEP-WCMC) in Cambridge, and Adjunct Professor in the Biology Department at Dalhousie University in Halifax, Nova Scotia. His research examines human impacts on biodiversity in the oceans, large-scale modelling of ecosystems from first principles, and the distribution and biogeography of marine species. His work is a combination of theoretical modelling, statistical analysis, field observation, and experiments.


Tittensor D.P., Walpole M., Hill S.M.L.L., Boyce D.G., Britten G.L., Burgess N.D., Butchart S.H.M., Leadley P.W., Regan E.C., Alkemade R., Baumung R., Bellard C., Bouwman L., Bowles-Newark N.J., Chenery M.A., Cheung W.W.L., Christensen V., Cooper H.D., Crowther A.R., Dixon M.J.R., Galli A., Gaveau V., Gregory R.D., Gutierrez N.L., Hirsch T.L., Höft R., Januchowski-Hartley S.R., Karmann M., Krug C.B., Leverington F.J., Loh J., Lojenga R.K., Malsch K., Marques A., Morgan D.H.W., Mumby P.J., Newbold T., Noonan-Mooney K., Pagad S.N., Parks B.C., Pereira H.M., Robertson T., Rondinini C., Santini L., Scharlemann Schindler S., Sumaila R., Teh L.S.L., van Kolck J., Visconti P., Ye Y., 2014, A mid-term analysis of progress toward international biodiversity targets., Biodiversity, Science, 346, 241-244, DOI 10.1126/science.1257484, link

Blanchard, J., Watson, R. A., Fulton, E. A., Cottrell, R. S., Nash, K. L., Bryndum-Buchholz, A., Büchner, M., Carozza, D. A., Cheung, W. W. L., Elliott, J., Davidson, L. N. K., Dulvy, N. K., Dunne, J. P., Eddy, T. D., Galbraith, E., Lotze, H. K., Maury, O., Müller, C., Tittensor, D. P., Jennings, S., 2017, Linked sustainability challenges and trade-offs among fisheries, aquaculture and agriculture, Nature Ecology and Evolution, 1, 1240-1249, link

Tittensor, D.P., Eddy, T.D., Lotze, H.K., Galbraith, E.D., Cheung, W.W.L., Barange, M., Blanchard, J., Bopp, L., Bryndum-Buchholz, A., Büchner, M., Bulman, C., Carozza, D.A., Christensen, V., Coll, M., Dunne, J.P, Fernandes, J.A., Fulton, E.A., Hobday, A., Huber, V., Jennings, S., Jones, M., Lehodey, P., Link, J.S., Mackinson, S., Maury, O., Niiranen, S., Oliveros-Ramos, R., Roy, T., Schewe, J., Shin, Y.J., Silva, T., Stock, C.A., Steenbeek, J., Underwood, P.J., Volkholz, J., Watson, J., Walker, N.  2018. A protocol for the intercomparison of marine fishery and ecosystem models: Fish-MIP v1.0. Geoscientific Model Development 11: 1421-1442  link

Martin C.S., Fletcher R., Jones M.C., Kaschner K., Sullivan E., Tittensor D.P., Mcowen C., Geffert J.L., van Bochove J.W., Thomas H., Blyth S., Ravillious C., Tolley M., Stanwell-Smith D., 2014, Manual of marine and coastal datasets of biodiversity importance., Marine Ecosystem, Biodiversity, UNEP World Conservation Monitoring Centre.

Schewe J, Gosling SN, Reyer C, Zhao F, Ciais P, Elliott J, Francois L, Huber V, Lotze HK, Seneviratne SI, van Vliet MTH, Vautard R, Wada Y, Breuer L,Büchner M, Carozza DA, Chang J, Coll M, Deryng D, de Wit A, Eddy TD, Folberth C, Frieler K, Friend AD, Gerten D, GudmundssonL, Hanasaki N, Ito A, Khabarov N, Kim H, Lawrence P, Morfopoulos C, Müller C, Schmied HM, Orth R, Ostberg S, Pokhrel Y, Pugh TAM, Sakurai G, Satoh Y, Schmid E, Stacke T, Steenbeek J, Steinkamp J, Tang Q, Tian H, Tittensor D, Volkholz J, Wang X, Warszawski L. (2019). State-of-the-art global models underestimate impact from climate extremes. Nature Communications 10: 1005. link

Crespo, G.O., Dunn, D.C., Reygondeau, G., Boerder, K., Worm, B., Cheung, W., Tittensor, D.P., and Halpin, P.N. (2018). The environmental niche of the global high seas pelagic longline fleet. Science Advances, 4(8), Eaat3681. DOI: 10.1126/sciadv.aat3681 link

Lotze, H., Tittensor, D., Bryndum-Buchholz, A., Eddy, T., Cheung, W., Galbraith, E., Barange, M., Barrier, N., Bianchi, D., Blanchard, J.L., Bopp, L., Büchner, M., Bulman, C.M., Carozza, D.A., Christensen, V., Coll, M., Dunne, J.P., Fulton, E.A., Jennings, S., Jones, M.C., Mackinson, S., Maury, O., Niiranen, S., Oliveros-Ramos, R., Roy, T., Fernandez, J.A., Schewe, J., Shin, Y., Silva, T.A.M., Steenbeek, J., Stock, C.A., Verley, P., Volkholz, J., Walker, N.D. and Worm, B. (2019). Global ensemble projections reveal trophic amplification of ocean biomass declines with climate change. Proceedings of the National Academy of Sciences of the United States of America, 116(26), 12907-12912. DOI: /10.1073/pnas.1900194116 link

Nereus’s Tyler Eddy, William Cheung, Miranda Jones, Derek Tittensor, and Charles Stock are co-authors on a recent article that projects a 5% decline, on average, in global marine biomass for every 1 degree (C) of warming. They did this by combining several different types of models, rather than using a single-model approach.