J. Chadwick (Chad) Johnson

J. Chadwick (Chad) Johnson
Senior Sustainability Scientist, Julie Ann Wrigley Global Institute of Sustainability
Associate Professor of Behavioral Ecology, Division of Mathematical and Natural Sciences

jchadwick@asu.edu
602-543-6524
Website

Division of Mathematical and Natural Sciences
Arizona State University, West campus
4701 W. Thunderbird Rd
Glendale, AZ 85306-2352
USA

J. Chadwick (Chad) Johnson is an assistant professor in the New College Division of Mathematical and Natural Sciences. Dr. Johnson joined the ASU faculty in 2006 after serving as a lecturer in the Department of Ecology and Evolution at the University of California-Davis in 2005. He received his Ph.D. in biology from the University of Kentucky in 2003 and attended the University of Toronto as a National Science Foundation (NSF) International Post-Doctoral Research Fellow (2003-05). He earned his M.S. in biology at Illinois State University in 1998 and his B.A. in biopsychology from Earlham College (Richmond, Ind.) in 1990.

Dr. Johnson's teaching experience prior to his arrival at ASU's West campus includes being an instructor of behavioral ecology at the University of Toronto (2004-05) and lecturer at UC-Davis (2003, 2005).

Dr. Johnson's scholarly interests include studying animal behavior at the levels of mechanisms, individuals, populations and communities, and he is particularly interested in the way in which behavioral expression - e.g., aggression level - is correlated across distinct behavioral-ecological contexts (e.g., foraging and anti-predator contexts). To this end, Dr. Johnson tracks animals through their life cycles, studying behavior in conjunction with ecological variations found in nature.

In conjunction with the Central Arizona-Phoenix Long Term Ecological Research Project, his most recent research focuses on the study of behavior and population ecology/genetics of desert-versus-urban populations of black widow spiders native to Arizona, as well as African widow species found in urban habitats of the southeastern United States and southern California. It is Dr. Johnson's hope that by concentrating on the dynamic interaction between the behavior, ecology and population genetics of these urban infestations, the ineffectual application of pesticides can be curtailed. His research has appeared in such publications as Animal Behaviour, Behavioral Ecology, Behavioral Ecology and Sociobiology,and Ethology.

PhD, Biology, University of Kentucky, 2003

MS, Biology, Illinois State University, 1998

BA, Biopsychology, Earlham College, 1990

Journal Articles

2014

Halpin, R. N. and J. C. Johnson. 2014. A continuum of behavioral plasticity in urban and desert black widows. Ethology: International Journal of Behavioral Biology 120(2014):1-11. DOI: 10.1111/eth.12297. (link)

Johnson, J. C., L. S. Miles, P. Trubl and A. Hagenmaier. 2014. Maternal effects on egg investment and offspring performance in black widow spiders. Animal Behaviour 91:67-73. DOI: 10.1016/j.anbehav.2014.02.031. (link)

2012

Dimitrova, R., N. Lurponglukana, H. J. Fernando, G. C. Runger, P. G. Hyde, B. C. Hedquist, J. R. Anderson, W. Bannister and J. C. Johnson. 2012. Relationship between particulate matter and childhood asthma – basis of a future warning system for central Phoenix. Atmospheric Chemistry and Physics 12(5):2479-2490. (link)

Johnson, J. C., P. Trubl and L. S. Miles. 2012. Black widows in an urban desert: City-living compromises spider fecundity and egg investment despite urban prey abundance. The American Midland Naturalist 168:333-340. (link)

Trubl, P., T. Gburek, L. S. Miles and J. C. Johnson. 2012. Black widows in an urban desert: Population variation in an arthropod pest across metropolitan Phoenix. Urban Ecosystems 15(3):599-609. DOI: 10.1007/s11252-011-0223-2. (link)

2011

Johnson, J. C., P. Trubl, V. Blackmore and L. S. Miles. 2011. Male black widows court well-fed females more than starved females: Silken cues indicate sexual cannibalism risk. Animal Behaviour 82(2):388-390. DOI: 10.1016/j.anbehav.2011.05.018. (link)

Johnson, P. C., O. Revis and J. C. Johnson. 2011. Chemical prey cues influence urban microhabitat preferences of Western black widow spiders, Latrodectus hesperus. Journal of Arachnology 39:449-453. DOI: http://dx.doi.org/10.1636/Hi11-19.1. (link)

Pruitt, J. N., N. DiRienzo, S. Kralj-Fisher, J. C. Johnson and A. Sih. 2011. Individual- and condition-dependent effects on habitat choice and choosiness. Behavioral Ecology and Sociobiology 65(10):1987-1995. DOI: 10.1007/s00265-011-1208-0. (link)

Trubl, P., V. Blackmore and J. C. Johnson. 2011. Wasteful killing in black widows: Adaptive gluttony or behavioral syndromes of voracity?. Ethology 117:236-245. DOI: 10.1111/j.1439-0310.2010.01870.x. (link)

2010

Johnson, J. C., K. Kitchen and M. C. Andrade. 2010. Family affects sibling cannibalism in the black widow spider, Latrodectus hesperus. Ethology 116(8):770-777. DOI: 10.1111/j.1439-0310.2010.01792.x. (link)

Book Chapters

2010

Sih, A., P. W. Bell and J. C. Johnson. 2010. Behavioral syndromes. Pp. 516-530 In: Westneat, D. F. and C. W. Fox eds., Evolutionary Behavioral Ecology. Oxford University Press.

Posters

2015

Johnson, J. C., D. Stevens, A. Vannan, K. Bratsch and J. Lam. 2015. Do black widows like it hot? Urban spider behavior at urban heat island temperatures. Poster presented at the Seventeenth Annual CAP LTER All Scientists Meeting and Poster Symposium, 16 January 2015, Skysong, Scottsdale, AZ. (link)

2014

Stevens II, D. R., R. Halpin and J. C. Johnson. 2014. Relative behavioral plasticity in an invasive, urban-exploiting gecko. Poster presented at the 16th Annual CAP LTER Poster Symposium and All Scientists Meeting, January 17, 2014, Skysong, Scottsdale, AZ. (link)

2013

Gburek, T. M., J. Jewell and J. C. Johnson. 2013. Ecology and color morphology of urban black widow populations. Poster presented at the 11 January 2013, 15th Annual CAP LTER Poster Symposium and All Scientist Meeting 2013, Skysong, Scottsdale, AZ. (link)

Halpin, R. and J. C. Johnson. 2013. Behavioral plasticity in the western black widow, Lactrodectus herspersus, across a continuum of urbanization. Poster presented at the 11 January 2013, 15th Annual CAP LTER Poster Symposium and All Scientist Meeting 2013, Skysong, Scottsdale, AZ. (link)

Johnson, J. C., R. Halpin, S. Sandrin, C. Bauman, A. Wirkus Camacho, A. Diedtrich, S. Mulk, A. Pate, N. Planidin, E. Slosky, J. Urcuyo and K. A. Landsdowne. 2013. Cannabalism versus social tolerance in an urban pest: What makes black widows want to kill each other?. Poster presented at the 11 January 2013, 15th Annual CAP LTER Poster Symposium and All Scientist Meeting 2013, Skysong, Scottsdale, AZ. (link)

Trubl, P. and J. C. Johnson. 2013. Ecological stoichiometry of the black widow spider: From solitary desert predator to urban pest. Poster presented at the 11 January 2013, 15th Annual CAP LTER Poster Symposium and All Scientist Meeting 2013, Skysong, Scottsdale, AZ. (link)

2012

Miles, L. S., R. E. Ziemba, J. C. Johnson and B. C. Verrelli. 2012. A population genetic approach to investigate effects of urbanization and habitat fragmentation on the Western black widow spider, Latrodectus hesperus. Poster presented at 13 January 2012 CAP LTER 14th Annual Poster Symposium and All Scientist Meeting, Global Institute of Sustainability, Arizona State University, Tempe, AZ. (link)

Still, M., L. A. Ferry and J. C. Johnson. 2012. Exotic urban crayfish and the threatened Sonoran Desert pupfish: Do behavior and chemical cues mediate this predator-prey relationship?. Poster presented at 13 January 2012 CAP LTER 14th Annual Poster Symposium and All Scientist Meeting, Global Institute of Sustainability, Arizona State University, Tempe, AZ. (link)

Trubl, P. and J. C. Johnson. 2012. The stoichiometry of urban pests: Nutrient composition in an athropod predatory-prey system across metropolitan Phoenix. Poster presented at 13 January 2012 CAP LTER 14th Annual Poster Symposium and All Scientist Meeting, Global Institute of Sustainability, Arizona State University, Tempe, AZ. (link)

2011

Johnson, J. C., G. M. Hupton, D. Bonney and M. M. Elser. 2011. The web of inquiry: Urban black widow spider behavior as a tool to teach the scientific process. Tempe, AZ. Poster presented at the 12-13 January 2011 CAP LTER 13th Annual Poster Symposium and All Scientist Meeting, Global Institute of Sustainability, Arizona State University. (link)

Johnson, J. C., M. Still and T. Gburek. 2011. Conspecific silk cues shape the habitat preferences of black widows. Tempe, AZ. Poster presented at the 12-13 January 2011 CAP LTER 13th Annual Poster Symposium and All Scientist Meeting, Global Institute of Sustainability, Arizona State University. (link)

Trubl, P., T. Gburek, L. S. Miles and J. C. Johnson. 2011. Black widows in an urban desert: Population variation in an urban pest across metropolitan Phoenix. Tempe, AZ. Poster presented at the 12-13 January 2011 CAP LTER 13th Annual Poster Symposium and All Scientist Meeting, Global Institute of Sustainability, Arizona State University. (link)

2010

Johnson, A., O. Revis and J. C. Johnson. 2010. Chemical prey cues influence the microhabitat preferences of western black widow spiders, Latrodectus hesperus. Arizona State University, Tempe, AZ. Poster presented at the January 14, 2010 12th Annual Central Arizona-Phoenix Long-Term Ecological Research Poster Symposium, Global Institute of Sustainability.

Johnson, J. C., G. M. Hupton, D. Bonney and M. M. Elser. 2010. The web of inquiry: Urban black widow behavior as a tool to teach the scientific process. Poster presented at the 25-29 July 2010 47th Annual Meeting of the Animal Behavior Society, College of William and Mary, Williamsburg, VA.

Johnson, J. C., L. S. Miles and P. Trubl. 2010. The urban behavioral ecology of the western black widow spider: The effect of nature and nuture on development and cannibalism. Arizona State University, Tempe, AZ. Poster presented at the January 14, 2010 12th Annual Central Arizona-Phoenix Long-Term Ecological Research Poster Symposium, Global Institute of Sustainability.

2008

Johnson, J. C., C. I. Torres, P. Trubl, A. Gohr and M. Rife. 2008. Urban behavioral ecology of the western black widow spider Latrodectus hesperus: From solitary desert predator to urban pest. Poster presented at 10 January 2008 CAP LTER 10th Annual Poster Symposium, Global Institute of Sustainability, Arizona State University, Tempe, AZ. (link)

Kitchen, K. and J. C. Johnson. 2008. The effects of relatedness, age differences, and maternal investment on juvenile cannabilism in the black widow spider, Latrodectus hesperus. Poster presented at 10 January 2008 CAP LTER 10th Annual Poster Symposium, Global Institute of Sustainability, Arizona State University, Tempe, AZ. (link)