Migratory connectivity is the degree to which populations are spatially connected between different periods of the annual cycle. The Norris lab has contributed towards making major advances in describing patterns of connectivity in songbirds, shorebirds, and monarch butterflies. Using theoretical models and experimental laboratory systems, we also continue to work on understanding the population consequences of migratory connectivity and we have recently initiated several large-scale studies to quantify migratory connectivity of birds and insects across their breeding and non-breeding ranges.
DeLuca, WV, Woodworth, BK, Mackenzie, SA, Newman, AEM, Cooke, H, Phillips, LM, Freeman, NK, Sutton, AO, Tauzer, L, McIntyre, C, Stenhouse, I, Weidensaul, S, Taylor, PD & Norris, DR. A boreal songbird’s 20,000 km migration across North America and the Atlantic Ocean. In press: Ecology
Knight, SM, Bradley, DW, Clark, RG, Gow, EA, Belise, M, Berzins, L, Blake, T, Bridge, ES, Burke, L, Dawson, RD, Dunn, PO, Garant, D, Holroyd, G, Hussell, DJT, Lansdorp, O, Laughlin, AJ, Leonard, ML, Pelletier, F, Shutler, D, Siefferman, L, Taylor, CM, Trefry, H, Vleck, CM, Vleck, D, Winkler, DW, Whittingham, LA & Norris, DR. 2018. Constructing and evaluating a continent-wide migratory songbird network across the annual cycle. Ecological Monographs 88: 445-460.
Flockhart, DTT, Brower, LP, Ramirez, MI, Hobson, KA, Wassenaar, LI, Altizer, S & Norris, DR. 2017. Regional climate on the breeding grounds predicts variation in the natal origin of monarch butterflies overwintering in Mexico over 38 years. Global Change Biology 23:2565-2576.
Woodworth, BK, Newman, AEM, Turbek, SP, Dossman, BC, Hobson, KA, Wassenaar, LI, Mitchell, GW, Wheelwright, NT & Norris, DR. 2016. Differential migration and the link between winter latitude, timing of migration and breeding in a songbird. Oecologia 181: 413-422.
DeLuca, WV, Woodworth, BK, Rimmer, C, Taylor, PD, Marra, PP, McFarland, K, Mackenzie, SA & Norris, DR. 2015. Transoceanic migration by a 12g songbird. Biology Letters 11: 20141045.
Flockhart, DTT, Wassenaar, LI, Hobson, KA, Martin, TG, Wunder, MB & Norris, DR. 2013. Tracking multi-generational colonization of the breeding grounds by monarch butterflies in eastern North America. Proceedings of the Royal Society, London: Biological Sciences 280 (1768).
Bairlein, F, Norris, DR, Nagel, R, Butle, M., Voigt, CC, Fox, JW, Hussell, DJT & Schmaljohann, H. 2012. Cross-hemisphere migration of a 25-gram songbird. Biology Letters 8: 505-507.
Franks, SE, Norris, DR, Kyser, TK, Fernandez, GJ, Schwarz, B, Carmona, R, Colwell, MA, Correa Sandoval, J, Dondua, A, Gates, HR, Hasse, B, Hodkinson, DJ, Jiminez, A, Lanctot, RB, Ortego, B, Sandercock, BK, Sanders, F, Takekawa, JY, Warnock, N, Ydenberg, RC & Lank, DB. 2012. Range-wide patterns of migratory connectivity in the Western Sandpiper. Journal of Avian Biology 43: 155-167.
Taylor, CM & Norris, DR. 2010. Population dynamics in migratory networks. Theoretical Ecology 3: 65-73.
Martin, TM, Chades, I, Arcese, P, Marra, PP, Possingham, HP & Norris, DR. 2007. Optimal conservation of migratory species. Public Library of Science, One 2(8): e751.
Norris, DR, Marra, PP, Bowen, GJ, Ratcliffe, LM, Royle, JA & Kyser, TK. 2006. Migratory connectivity of a widely distributed Nearctic-Neotropical songbird, the American redstart (Setophaga ruticilla). Ornithological Mongrographs 61: 14-28