Articles Published in Refereed Journals
Steffen, J.E. and C. Guyer. Display behaviour and dewlap colour as predictors of contest success in brown anoles. Biological Journal of the Linnean Society, 111: 646–655, 2014.
Alfonso, Y.U., Morris, H.J., Gutierrez, A., Rodriguez-Schettino, Denis, D. and J.E. Steffen. Dewlap color variation based on pterin and carotenoid pigments in three subspecies of Anolis jubar of the Cuban southern coast. Copeia, 2013:205-209, 2013.
Peterson, J.D., Steffen, J.E., Reinert, L.K., Cobine, P.A., Appel, A., Rollins-Smith, L. Host stress response is important for the pathogenesis of the deadly amphibian disease, Chytridiomycosis, in Litoria caerulea. PLOS One 8(4):e62146, 2013.
Steffen, J.E. Book Review: The Optics of Life: A Biologist’s Guide to Light in Nature, by Sonke Johnsen. Integrative and Comparative Biology, 52(2): 331, 2012.
Steffen, J.E. and A.G.Appel. The effect of temperature on standard metabolic rate (SMR) of male and female Brown Anoles. Amphibia-Reptilia, 33(2):297-302, 2012.
Steffen, J.E. Perch height differences among female Anolis polylepis exhibiting dorsal pattern polymorphism. Reptile and Amphibian Conservation and Natural History, 17(3):172-174., 2010.
Steffen, J.E., Hill, G.E., and C.G. Guyer. Carotenoid access, nutritional stress and dewlap color of male Brown Anoles. Copeia, 2010(2):239-246, 2010.
Steffen, J.E. Assessment of allometry for sexual size dimorphism in Norops lizards. South American Journal of Herpetology, 4(3):245-252, 2009.
Steffen, J.E. and K.J. McGraw. Dewlap size and coloration in relation to sex and pigment content in the Brown Anole, Norops sagrei. Comparative Biochemistry and Physiology, Part B, 154:334-340, 2009.
Liu,M., Siefferman, L., Mays, Jr. H., Steffen, J.E., and G.E.Hill. 2009. A field test of female mate preference for male plumage coloration in eastern bluebirds. Animal Behaviour, 77(8): 1707-1720, 2009.
Steffen, J.E. Perch-height specific predation on tropical lizard clay models: implications for habitat selection in mainland Neotropical lizards. International Journal of Tropical Biology, 57(3):859-864, 2008.
Amsberry, L.K. and J.E. Steffen. Do colorful unripe fruits of the neotropical tree, Ardisia nigropunctatus, attract avian seed dispersers? Biotropica, 40(5):575-580, 2008.
Steffen, J.E. and K.J. McGraw. Contributions of pterin and carotenoid pigments to dewlap coloration in two anole species. Comparative Biochemistry and Physiology, Part B, 146: 42-46, 2007.
Steffen, J.E. and R.A.Anderson. Abundance of the Long-Nose Leopard Lizard, Gambelia wislizenii correlates inversely with shrub cover and sagebrush abundance in southeast Oregon. American Midland Naturalist, 156: 201-207, 2006.
Steffen, J. E. (2014). The influence of light on visual discrimination of sexually dichromatic dewlap color in male and female Brown Anoles. Lizards: Thermal Ecology, Genetic Diversity and Functional Role in Ecosystems. M. P. Kiernan. Hauppauge, NY, Nova Scientific Publishers, Inc.: 1-28.