https://cpw.cvlcollections.org/files/original/dd50fe7f19843ed60708152910554610.png 02ae20b5a9ec47f8f73232aff2fcfa07 https://cpw.cvlcollections.org/files/original/a04d644a02cbfe3ec41fbfd92aefefd3.jpg 35a4cac6512f5501480b584b71976062 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Mammals Researcher Bios Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Nathaniel Rayl, Wildlife Research Scientist Description An account of the resource Wildlife Researcher, Ungulates/Carnivores Current or Recent Research Projects <ul> <li><a href="https://cpw.cvlcollections.org/items/show/id/672">Evaluating Factors Influencing Elk Recruitment in Colorado</a></li> <li><a href="https://cpw.cvlcollections.org/items/show/676">Assessing Responses of Elk to Human Recreation in Colorado</a></li> <li><a href="https://cpw.cvlcollections.org/items/show/677">Spatiotemporal Effects of Human Recreation on Elk Behavior</a></li> </ul> Areas of Interest and Expertise My research focuses on large mammal ecology and management, with an emphasis on spatial ecology, population dynamics, and predator-prey interactions. Streaming Videos <a href="https://www.youtube.com/watch?v=HCA0KGOSdYc">Emblems of the West</a> Select Publications <ul> <li>Crews, S., N. D. Rayl, M. W. Alldredge, E. J. Bergman, C. R. Anderson Jr., E. H. VanNatta, J. D. Holbrook, and G. Bastille-Rousseau. 2025. <a href="https://doi.org/10.1002/ece3.71097">Hierarchy in structuring of resource selection: understanding elk selection across space, time, and movement strategies</a>. Ecology and Evolution 15:e71097. https://doi.org/10.1002/ece3.71097</li> <li>Crews, S., N. D. Rayl, M. W. Alldredge, E. J. Bergman, C. R. Anderson Jr., and G. Bastille-Rousseau. 2025. <a href="https://doi.org/10.1038/s41598-025-91947-4">Drivers of spring migration phenology in Rocky Mountain elk</a>. Scientific Reports 15:7807. https://doi.org/10.1038/s41598-025-91947-4</li> <li>Bastille-Rousseau, G., S. A. Crews, E. B. Donovan, M. E. Egan, N. T. Gorman, J. B. Pitman, A. M. Weber, E. M. Audia, M. R. Larreur, H. Manninen, S. Blake, M. W. Eihholz, E. Bergman, and N. D. Rayl. 2024. <a href="https://cpw.cvlcollections.org/items/show/456">A multi‐property assessment of intensity of use provides a functional understanding of animal movement</a>. Methods in Ecology and Evolution 15:345-357. doi.org/10.1111/2041-210X.14274</li> <li>Egan, M. E., N. T. Gorman, S. Crews, M. W. Eichholz, D. Skinner, P. E. Schlichting, N. D. Rayl, E. J. Bergman, E. H. Ellington, and G. Bastille-Rousseau. 2024. <a href="https://doi.org/10.1111/1365-2656.14133">Estimating encounter-habitat relationships with scale-integrated resource selection functions</a>. Journal of Animal Ecology 93:1036-1048. https://doi.org/10.1111/1365-2656.14133</li> <li>Rayl, N.D., J.A. Merkle, K.M. Proffitt, E.S. Almberg, J.D. Jones, J.A. Gude, and P.C. Cross. 2021. <a href="https://cpw.cvlcollections.org/items/show/256#?c=&m=&s=&cv=">Elk migration influences the risk of disease spillover in the Greater Yellowstone Ecosystem</a>. Journal of Animal Ecology 90:1264-1275. https://doi.org/10.1111/1365-2656.13452</li> <li>Rayl, N.D., K.M. Proffitt, E.S. Almberg, J.D. Jones, J.A. Merkle, J.A. Gude, and P.C. Cross. 2019. <a href="https://cpw.cvlcollections.org/items/show/257#?c=&m=&s=&cv=">Modeling elk-to-livestock transmission risk to identify hotspots of brucellosis spillover</a>. Journal of Wildlife Management 83:817-829. https://doi.org/10.1002/jwmg.21645</li> <li>Rayl, N.D., K.M. Proffitt, E.S. Almberg, J.D. Jones, J.A. Merkle, and P.C. Cross. 2018. <a href="https://cpw.cvlcollections.org/items/show/258#?c=&m=&s=&cv=">Estimating the risk of elk-to-livestock brucellosis transmission in Montana</a>. Montana Fish, Wildlife and Parks, Helena, MT, USA.</li> <li>Rayl, N.D., G. Bastille-Rousseau, J.F. Organ, M.A. Mumma, S.P. Mahoney, C.E. Soulliere, K.P. Lewis, R.D. Otto, D.L. Murray, L.P. Waits, and T.K. Fuller. 2018. <a href="https://cpw.cvlcollections.org/items/show/259#?c=&m=&s=&cv=">Spatiotemporal heterogeneity in prey abundance and vulnerability shapes the foraging tactics of an omnivore</a>. Journal of Animal Ecology 87:874-887. https://doi.org/10.1111/1365-2656.12810</li> <li>Morjan, M.D.*, N.D. Rayl*, P.W. Elkan, J.C. Deutsch, M.B. Henke, and T.K. Fuller. 2018. <a href="https://doi.org/10.1007/s10531-017-1440-7">Armed conflict and development threatens some of Africa’s longest and largest ungulate migrations</a>. Biodiversity and Conservation 27:365-380. https://doi.org/10.1007/s10531-017-1440-7 [*shared first authorship] </li> <li>Bastille-Rousseau, G., J.A. Schaefer, M.J.L. Peers, E.H. Ellington, M.A. Mumma, N.D. Rayl, S.P. Mahoney, and D.L. Murray. 2018. <a href="https://doi.org/10.1007/s00442-017-4017-y">Climate change can alter predator-prey dynamics and population viability of prey</a>. Oecologia 186:141-150. https://doi.org/10.1007/s00442-017-4017-y</li> <li>Mumma, M.A., J.D. Holbrook, N.D. Rayl, C.J. Zieminski, T.K. Fuller, J.F. Organ, S.P. Mahoney, and L.P. Waits. 2017. <a href="https://doi.org/10.1007/s00442-017-3971-8 ">Examining spatial patterns of selection and use for an altered predator guild</a>. Oecologia 185:725-735. https://doi.org/10.1007/s00442-017-3971-8 </li> <li>Bastille-Rousseau, G., J.A. Schaefer, K.P. Lewis, M.A. Mumma, E.H. Ellington, N.D. Rayl, S.P. Mahoney, D. Pouliot, and D.L. Murray. 2016. <a href="https://doi.org/10.1111/1365-2656.12466">Phase-dependent climate-predator interactions explain three decades of variation in neonatal caribou survival.</a> Journal of Animal Ecology 85:445-456. https://doi.org/10.1111/1365-2656.12466</li> <li>Bastille-Rousseau, G., N.D. Rayl, E.H. Ellington, J.A. Schaefer, M.J.L. Peers, M.A. Mumma, S.P. Mahoney, and D.L. Murray. 2016. <a href="https://doi.org/10.1139/cjz-2015-0127">Temporal variation in habitat use, co-occurrence, and risk among generalist predators and a shared prey</a>. Canadian Journal of Zoology 94:191-198. https://doi.org/10.1139/cjz-2015-0127</li> <li>Bastille-Rousseau, G., J.R. Potts, J.A. Schaefer, M.A. Lewis, E.H. Ellington, N.D. Rayl, S.P. Mahoney, and D.L. Murray. 2015. <a href="https://doi.org/10.1111/ecog.01305">Unveiling trade-offs in resource selection of migratory caribou using a mechanistic movement model of availability</a>. Ecography 38:1049-1059. https://doi.org/10.1111/ecog.01305</li> <li>Rayl, N.D., T.K. Fuller, J.F. Organ, J.E. McDonald, Jr., R.D. Otto, G. Bastille-Rousseau, C.E. Soulliere, and S.P. Mahoney. 2015. <a href="https://doi.org/10.1002/jwmg.936">Spatiotemporal variation in the distribution of potential predators of a resource pulse: black bears and caribou calves in Newfoundland</a>. Journal of Wildlife Management 79:1041-1050.   https://doi.org/10.1002/jwmg.936 [Cover article]</li> <li>Rayl, N.D., T.K. Fuller, J.F. Organ, J.E. McDonald, Jr., R.D. Otto, and S.P. Mahoney. 2014. <a href="https://doi.org/10.2981/wlb.00020">Den abandonment and transitional day bed use by black bears Ursus americanus in Newfoundland</a>. Wildlife Biology 20:222-228. https://doi.org/10.2981/wlb.00020</li> <li>Rayl, N.D., T.K. Fuller, J.F. Organ, J.E. McDonald, Jr., S.P. Mahoney, C. Soulliere, S.E. Gullage, T. Hodder, F. Norman, T. Porter, G. Bastille-Rousseau, J.A. Schaefer, and D.L. Murray. 2014. <a href="https://doi.org/10.1644/13-MAMM-A-133.1">Mapping the distribution of a prey resource: neonate caribou in Newfoundland</a>. Journal of Mammalogy 95:328-339. https://doi.org/10.1644/13-MAMM-A-133.1</li> <li>Sitompul, A.F., C.R. Griffin, N.D. Rayl, and T.K. Fuller. 2013. <a href="https://doi.org/10.3390/ani3030670">Spatial and temporal habitat use of an Asian elephant in Sumatra</a>. Animals 3:670-679. https://doi.org/10.3390/ani3030670</li> <li>Fuller, T.K., S.M. Matthews, S.S. Stevens, N.D. Rayl, C.J. Zieminski, A.R. Whiteley, P.R. Sievert, J.F. Organ, and M.W. Gabriel. 2010. Book review: <a href="https://doi.org/10.7589/0090-3558-46.3.1055">Noninvasive survey methods for carnivores</a>. Journal of Wildlife Diseases 46:1055-1058. https://doi.org/10.7589/0090-3558-46.3.1055</li> </ul> Education <ul> <li>Ph.D., Wildlife, Fish & Conservation Biology – University of Massachusetts, 2017</li> <li>M.S., Wildlife, Fish & Conservation Biology – University of Massachusetts, 2012</li> <li>B.A., Philosophy – Haverford College, 2000</li> </ul> Current or Recent Positions <ul> <li>Wildlife Researcher – Colorado Parks and Wildlife, 2018-Present</li> <li>Ecologist – U.S. Geological Survey, 2016-2018</li> </ul> Contact Information 711 Independent Ave Grand Junction, CO 81505 Email: <a href="mailto:nathaniel.rayl@state.co.us">nathaniel.rayl@state.co.us</a> Phone: 970-255-6121 Rights Information about rights held in and over the resource <a href="http://rightsstatements.org/vocab/NoC-NC/1.0/">No Copyright - Non-Commercial Use Only</a>