Bridging Applied and Theoretical Ecology

Clayton Lamb is a wildlife scientist with Biodiversity Pathways and the University of British Columbia working at the interface of population ecology,  human-wildlife coexistence, and endangered species recovery. Clayton’s work provides rigorous and insightful evidence that informs wildlife management, theoretical population ecology, and maximizes conservation gains for wildlife, wild places, and local land stewards.

Ecological Gradients

Tracking ecological interactions across anthropogenic and productivity gradients to illuminate the complex dynamics of wildlife populations.


Clayton takes a population and behavioural ecology approach and ask questions such as:

How do we maximize conservation gains for wildlife populations?

How do habitat, nutrition, and mortality risks limit population density?

How do vital rates interact to produce observed population density?

What can be done to mitigate human-caused impacts on wildlife?


Clayton uses non-invasive DNA sampling to glean ecological insights that can scale from alleles to ecosystems. He track individuals with GPS collars to understand fine-scale connectivity and demography at a population-level.



Updated: May 25, 2023

Lamb-Google Citations


[36] Lamb, C.T.,  Roland Willson, Allyson K Menzies, Naomi Owens-Beek, Michael Price, Scott McNay, Sarah P Otto, Mateen Hessami, Jesse N Popp, Mark Hebblewhite, Adam T Ford. 2023. Braiding Indigenous rights and endangered species law. Science. PDF | Infographic

[35] Liam Brennan, Emily Chow, Lamb, C.T., 2022. Wildlife overpass structure size, distribution, effectiveness, and adherence to expert design recommendations. PeerJ. PDF | Infographic

[34] Lamb, C.T., Roland Willson, Carmen Richter, Naomi Owens-Beek, Julian Napoleon, Bruce Muir, Scott McNay, Estelle Lavis, Mark Hebblewhite, Line Giguere, Tamara Dokkie, Stan Boutin, Adam T. Ford. Accepted. Indigenous-led conservation: pathways to recovery for the nearly extirpated Klinse- Za mountain caribou. Ecological Applications. PDF | Infographic
[33] Scott Mcnay, R., Lamb, C.T., Line Giguere, Sara H. Williams, Hans Martin, Glenn D. Sutherland, Mark Hebblewhite. Accepted. Demographic responses of nearly extirpated endangered mountain caribou to recovery actions in central British Columbia. Ecological Applications. PDF | Infographic
[32] Lamb, C.T., L Smit, B Mclellan, LM Vander Vennen, M Proctor. Accepted. Considerations for furbearer trapping regulations to prevent grizzly bear toe amputation and injury. Wildlife Society Bulletin.
[31] McShea WJ , HwangM , Liu F, Li S ,  Lamb, CT, McLellan BM ,  Morin DJ, Pigeon K, Proctor MF , Hernandez-Yanez H,  Frerichs T,  Garshelis DL. Accepted. Is the Delineation of Range Maps Useful for Monitoring Asian Bears? Global Ecology and Conservation. PDF
[30] Bates AE,…. Lamb, C.T.,…et al. 2021. Global COVID-19 lockdown highlights humans as both threats and custodians of the environment. Biological Conservation. PDF

[29] MacDonald, Z.G., Deane D.C, He F, Lamb, C.T., Sperling FAH, Acorn JH,  Nielsen SE. 2021. Distinguishing effects of area per se and isolation from the sample‐area effect for true islands and habitat fragments. EcospherePDF

[28] Doran-Myers, D., Kenney, A., Krebs, C., Lamb, C.T., Menzies, A., Murray, D., Studd, E., Whittington, J., Boutin, S. 2021. Density estimates for Canada lynx vary among estimation methods. EcospherePDF

[27] Peers, M.J.L., Konkolics S., Majchrzak, Y.N, Menzies, A.K., Studd E.K., Boonstra R., Boutin, S., Lamb, C.T. 2021. Vertebrate scavenging dynamics differ between carnivore and herbivore carcasses in the northern boreal forest. EcospherePDF

[26] König H,  Carter N, Ceausu S, Lamb C.T., Ford AT,  Kiffner C. 2021. Human-wildlife coexistence in science and practice. Conservation Science and Practice. PDF

[25] Serrouya, R., Dickie, M., Lamb, C.T., van Oort, H., Kelly, A.P., DeMars, C., McLoughlin, P.D., Larters, N.C, Hervieux, D., Ford, A., Boutin, S. 2021. Trophic consequences of terrestrial eutrophication for a threatened ungulate. Proceedings of the Royal Society B: Biological Sciences. PDF

[24] Ford AT, Ali A, Colla A, Cooke S, Lamb, C.T., Pittman J, Shiffman D, Singh N. 2021. The erosion of cooperation and evidence leads to misplaced efforts in conservation. FACETS. PDF

[23] Lamb, C.T., AT Ford, B McLellan, M Proctor, G Mowat, L Ciarniello, S Nielsen, S Boutin. 2020. The ecology of human-carnivore coexistence. Proceedings of the National Academy of Sciences. PDF | Infographic

[22] Neilson E.W., Lamb, C.T., Konkolics SM, Peers MJL, Majchrzak YN, Doran-Myers D, Garland L, Martinig AR, Boutin S. 2020. There’s a storm a-coming: Ecological resilience and resistance to extreme weather events. Ecology and Evolution. PDF

[21] Peers, M.J.L., Konkolics S., Lamb, C.T., Majchrzak, Y.,  Menzies, A., E Studd, R Boonstra, A Kenney, C Krebs, A Martinig, B McCulloch, J Silva, L Garland, S Boutin. 2020. Prey availability and ambient temperature drive carrion persistence in the boreal forest. Journal of Animal Ecology. PDF

[20] Silva, J., Nielsen, S., Lamb, C.T., Hague, C., Boutin, S. 2020. Modelling lichen abundance for woodland caribou in a fire-driven boreal landscape. Forests. PDF

[19] Mowat, G.M., Klevenger, A., Kortello, A., Hausleitner, D., Barrueto, M., Smit, L., Lamb, C.T., Dorsey, B., Ott, P. 2020. The sustainability of wolverine trapping mortality in southern Canada. Journal of Wildlife Management. PDF | Infographic

[18] Prevey, J, Parker L, Harrington C, Lamb CT, Proctor M. 2020. Climate change shifts in habitat suitability and phenology of huckleberry (Vaccinium membranaceum). Agriculture and Forest Meteorology. PDF

[17] Proctor, M, McLellan B.M, Stenhouse, G.B, Mowat, G., Lamb CT, Boyce, M.S. 2020. Effects of roads and motorized human access on grizzly bear populations in British Columbia and Alberta, Canada. Ursus. PDF

[16] Proctor M.F., Kasworm W.F., Servheen, C., Teisberg, J., Radant, T.G., Lamb, C.T., Kendall, C.K., Mace, R.D., Paetkau, D., Boyce, M.S. 2020. American Black Bear Population Fragmentation Detected with Pedigrees in the Trans-border Canada-United States Region. Ursus. PDF

[15] Gilbert, S., Broadly, K., Doran-Myers, D., Droghini, A., Haines, J.A., Hämäläinen, A., Lamb, C.T., Neilson, E., Boutin, S. 2019. Conservation triage at the trailing edge of climate envelopes. Conservation Biology. PDF

[14] Lamb, C.T., Ford, A.T., Royle, A.J., Proctor, M., Boutin, S. 2019. Genetic tagging in the Anthropocene: scaling ecology from alleles to ecosystems. Ecological Applications. PDF | Infographic

[13] McLellan M.L.,McLellan B.M., Sollmann, R., Lamb, C.T., Apps, C., Wittmer, H.U. 2019. Divergent population trends ten years after ending the legal grizzly bear hunt in southwestern British Columbia, Canada. Biological Conservation. PDF

[12] McLellan B.M., Mowat, G., Lamb, C.T., 2018. Estimating Unrecorded Human-Caused Mortalities of Grizzly Bears in the Flathead Valley, British Columbia. PeerJ. PDF

[11] Peers, M.J.L., Majchrzak. Y.N., Neilson, N., Lamb, C.T., Hämäläinen, A., Haines, J.A., Garland, L., Doran-Myers, D., Broadley, K. Boutin, S. 2018. Quantifying fear effects on prey demography in nature.  Ecology. PDF | Infographic

[10] Lamb, C.T., Gilbert, S., Ford. A.T. 2018. Tweet success? Alternative metrics of scientific impact in ecology and conservationPeerJ6:e4564. PDF | Infographic

[9] Lamb, C.T., Festa-Bianchet, M., Boyce, M.S. 2018. Invest long term in Canada’s wildernessScience. 359(6379) pp. 1002. PDF

[8] Lamb, C.T., Mowat, G., Reid, A., Smit, L., Proctor, M., McLellan, B.M., Nielsen, S.E., Boutin, S. 2018. The effect of habitat quality and access management on the density of a recovering grizzly bear population. Journal of Applied Ecology. PDF | Infographic

[7] Lamb, C.T., G. Mowat, S. Gilbert, B.M. McLellan, S.E. Nielson, S. Boutin. 2017. Density-dependent signaling: An alternative hypothesis on the function of chemical signaling in a non-territorial solitary carnivorePLoS ONE. PDF | Infographic

[6] Hämäläinen, A., Broadley, K., Droghini, A., Haines, J.A., Lamb, C.T., Boutin, S., Gilbert, S. 2017. The ecological significance of secondary seed dispersal by carnivores. Ecosphere. 8 (2): e01685. PDF | Infographic

[5] Lamb, C.T., Mowat, G., McLellan, B.M., Nielsen, S.E., Boutin, S. 2017. Forbidden fruit: Human settlement and abundant fruit create an ecological trap for an apex omnivore. Journal of Animal Ecology. 86(1): 55-65. PDF | Infographic

[4] Lamb, C.T., Walsh, D., Mowat, G. 2016. Factors influencing detection success of grizzly bears at genetic sampling sites Ursus. 27(1): 31-44. PDF

[3] Robson, K.M., Lamb, C.T., Russello, M.A. 2016. Low genetic diversity, restricted dispersal and elevation-specific patterns of population decline in American pikas in an atypical environment. Journal of Mammalogy. 97(2): 464-472. PDF | Infographic

[2] Lamb, C.T., Robson, K.M., Russello, M.A. 2014. Development and application of a molecular sexing protocol in the climate-change sensitive American pika. Conservation Genetic Resources. 6:17-19. PDF

[1] Lemay, M.A., Henry, P., Lamb, C.T., Robson, K.M., Russello, M.A. 2013 Novel genomic resources for a climate change sensitive mammal: Characterization of the American pika transcriptome. BMC Genomics. 14:311. PDF

Reports and Media Articles

Lamb, C.T. 2020. Grizzly bear population dynamics across productivity and human influence gradients. PhD Thesis. University of Alberta. PDF

Proctor, M. F., B. N. McLellan, G. B. Stenhouse, G. Mowat, Lamb, C. T.,  and M. Boyce. 2018. Resource Roads and Grizzly Bears in British Columbia, and Alberta. Canadian Grizzly Bear Management Series, Resource Road Management. Trans-border Grizzly Bear Project. Kaslo, BC. PDF

Polzin, M.L., Lamb, C.T., Adams, I., Isaac L.A. (2017). Cottonwood Values and Species at Risk in Mount Fernie Provincial Park. Technical Report to BC Parks. Cranbrook, BC.

Mowat, G., Lamb, C.T. , Smit, L., Reid, A. (2017). The Relationships among Road Density, Habitat Quality, and Grizzly Bear Population Density in the Kettle-Granby Area of British Columbia. 20. Government of British Columbia. PDF

Lamb, C.T., Boyce, M.S., (2017). Maintaining the integrity of Alberta’s wilderness. Alberta Outdoorsman Magazine. April.

Mowat, G., Lamb C.T. (2015). Population status of the South Rockies and Flathead grizzly bear populations in British Columbia, 2006-2014. 20. Government of British Columbia. PDF

Lamb C.T. (2015). Identification of Huckleberry Fields used by Grizzly Bears in the Kootenay Region of British Columbia. 25. Trans-border Grizzly Bear Project.

Lamb C.T. (2015). Predicting the Occurrence of Huckleberry and Buffaloberry Shrubs in the Kootenay Region of British Columbia. 21. Trans-border Grizzly Bear Project.

Lamb C.T. (2012). Investigating the evolutionary potential of American pika in the face of climate change: a targeted gene approach. 12. University of British Columbia



Klinse-Za Caribou Recovery with Dr. Clayton Lamb (2022). The Hunter Conservationist Podcast. Listen

Build a Bridge with Dr. Clayton Lamb (2021). Talk is Sheep Podcast. Listen

Road Ecology with Dr. Clayton Lamb (2020). The Hunter Conservationist Podcast. Listen

Grizzly Bear Conservation with Clayton Lamb (2019). The Hunter Conservationist Podcast. Listen

Viewable Presentations

Lamb, C.T., (2023). Tales of taking evidence through to conservation action for two iconic mountain dwellers: caribou and grizzly bear. CREDtalks (Columbia Region Ecological Discussions). Watch

Lamb, C.T., (2021). Indigenous-led Conservation: Pathways to recovery for the nearly extirpated Klinse-za mountain caribou. Caribou Ecology & Recovery Webinar Series. Watch

Lamb, C.T., (2020). Grizzly Bear Population Dynamics Across Productivity and Human Influence Gradients. Kootenay Conservation Program. Watch 

Lamb, C.T., (2019). Grizzly Bear Population Dynamics Across Productivity and Human Influence Gradients. Ph.D. defence—University of Alberta. Watch