In Review

Riginos, C., E. Fairbank, E. Hansen, J. Kolek, and M.P Huijser. Reducing speed limit is ineffective for mitigating the effects of roads on ungulates. In review. Conservation Science and Practice.

In Press

LaMalfa, E., C. Riginos, and K.E. Veblen. Browsing wildlife and overgrazing each indirectly facilitate sapling recruitment in an East African savanna. In press. Ecological Applications.

Milligan, T. Martin, G. John, C. Riginos, J. Goheen, S. Carpenter, and T. Palmer. Invasive ants reduce carbon fixation for a foundational East African ant-plant. In press. Ecology Letters.

Charles, G., C. Riginos, T.P. Young, K.E. Veblen, and D. Kimuyu. Unexpected dynamism in an ecosystem engineer: responses of mound-building termites to biotic changes in a Kenyan savanna. In press. Ecology and Evolution.

Pietrek, A., J. Goheen, C. Riginos, N. Jepkirui, and T.M. Palmer. Density dependence and the spread of invasive big-headed ants (Pheidole megacephala) in an East African savanna. In press. Oecologia.

Hayes, B.R., J.R. Goheen, C. Riginos, and T.M. Palmer. A novel technique for estimating above-ground biomass of small trees. In press. Journal of Tropical Ecology.

Palmer, T.P., C. Riginos, P. Milligan, B. Hays, A. Pietrek, N. Jepkirui, S. Mutisya, B. Gituku, S. Muslia, S. Carpenter, and J. Goheen. Frenemy at the gate: invasion by Pheidole megacephala facilitates a competitively subordinate plant ant in Kenya. Early view. Ecology.

Tchouassi, D.P., B. Torto, R. Sang, C. Riginos, C. Brown, and V. Ezenwa. Large herbivore loss has complex effects on mosquito ecology and vector-borne disease risk. In press. Transboundary and Emerging Diseases.


Riginos, C., T.A. Monaco, K.E. Veblen, K. Gunnell, E. Thacker, D. Dahlgren, and T. Messmer. 2019. Potential for post-fire recovery of Greater Sage-grouse habitat. Ecosphere 10: e02870

Riginos, C., K.E. Veblen, E.T. Thacker, K.L. Gunnell, and T.A. Monaco. 2019. Disturbance type and sagebrush community type affect plant community structure following shrub reduction. Rangeland Ecology and Management 72: 619-631.

LaMalfa, E., R.L. Sensenig, D. Kimuyu, C. Riginos, T.P. Young and K.E. Veblen. 2019. Tree resprout dynamics following fire depend on herbivory by wild ungulate herbivores. Journal of Ecology 107: 2493-2502.

Lautz, L., C. Kelleher, P. Vidon, J. Coffman, C. Riginos, and H. Copeland. 2019. Restoring stream ecosystem function with beaver dam analogues: let’s not make the same mistake twice. Hydrological Processes Today 33: 174-177.


Riginos, C., L.M. Porensky, K.E. Veblen, and T.P. Young. 2018. Large-mammal herbivory promotes long-term compositional stability in a savanna understory plant community. Ecological Applications 28: 323-335.

Riginos, C., M.W. Graham, M.J. Davis, A. Johnson, A. May, K. Ryer, and L.E. Hall. 2018. Wildlife warning reflectors and white cloth reduce deer-vehicle collisions and risky behavior. Wildlife Society Bulletin 42:119-130.

Young, T.P., L.M. Porensky, C. Riginos, K.E. Veblen, Wilfred O. Odadi, Duncan M. Kimuyu, Grace K. Charles, and Hillary S. Young. 2018. Relationships between cattle and biodiversity in multiuse landscape revealed by Kenya Long-Term Exclosure Experiment. Rangeland Ecology and Management 71: 281-291.

Koerner, S.E., et al. (many authors). 2018. Resolving variation in herbivore effects on plant biodiversity – change in dominance as a global mechanism. Nature Ecology and Evolution.

Odadi, W.O., C. Riginos, and D.I. Rubenstein. 2018. Tightly bunched herding improves cattle performance in an African savanna rangeland. Rangeland Ecology and Management 71: 481-491.


Herrick, J.E., J.W. Karl, S.E. McCord, M. Buenemann, C. Riginos, E. Courtright, J. Van Zee, A.C. Ganguli, J. Angerer, J.R. Brown, D.W. Kimiti, R. Saltzman, A. Beh, and B. Bestelmeyer. 2017. Two new mobile apps for rangeland inventory and monitoring by landowners and land managers. Rangelands 39: 46-55.

Palmer, T.M., C. Riginos, R.E. Damiani, N. Morgan, J.S. Lemboi, J. Lengingiro, J.C. Ruiz‐Guajardo, R.M. Pringle. 2017. Influence of neighboring plants on the dynamics of an ant-acacia protective mutualism. Ecology 98: 3034-3043.

Sensenig, R.L., D.K. Kimuyu, J.C.R. Guajardo, K.E. Veblen, C. Riginos, and T.P. Young. 2017. Species-specific ant behaviors help explain short-term and long-term shifts in an acacia ant community after fire. Ecology 98: 1455-1464.

Kimuyu, D., K. Veblen, C. Riginos, and T.P. Young. 2017. Cattle competition with grazing and browsing wildlife varies with season and presence of megaherbivores. Ecological Applications 27: 786- 798.

Weinstein, S., G. Titcomb, V. Kobata, B. Agwanda, C. Riginos, and H. Young. 2017. Mechanism matters: predicting parasite response to defaunation in the African savanna. Ecology 98: 1839-1848.

Odadi, W.O., D.M. Kimuyu, R.L. Sensenig, K.E. Veblen, C. Riginos, and T.P. Young. 2017. Fire-induced negative responses of cattle to shared foraging with native ungulates in an African savanna. Journal of Applied Ecology 54: 935-944.

Kimiti, D.W., C. Riginos, and J. Belnap. 2017. Low-cost grass restoration using erosion barriers in a degraded African rangeland. Restoration Ecology 25: 376-384.


Veblen, K.E., L.M. Porensky, C. Riginos, and T.P. Young. 2016. Are cattle surrogate wildlife? Savanna plant community composition explained by total herbivory, not herbivore identity. Ecological Applications 26: 1610-1623.


Pringle, R.M., D. Kimuyu, R.L. Sensenig, T.M. Palmer, C. Riginos, K.E. Veblen, and T.P. Young. 2015. Synergistic indirect effects of elephants and fire in an African savanna. Journal of Animal Ecology 84: 1637-1645.

Cotterill-Oriol, A., M. Valeix, L.G. Frank, C. Riginos, and D.W. Macdonald. 2015. The landscape of coexistence: consequences of fear for large carnivores living in human-dominated areas. Oikos 124: 1263-1273.

Riginos, C., M.A. Karande, D.I. Rubenstein, and T.M. Palmer. 2015. Disruption of a protective ant-plant mutualism by an invasive ant increases elephant damage to savanna trees. Ecology 96: 654-661.

Riginos, C. 2015. Climate and the landscape of fear in an African savanna. Journal of Animal Ecology 84: 124-133.


Kimuyu, D.K., R.L. Sensenig, C. Riginos, K.E. Veblen, and T.P. Young. 2014. Native and domestic browsers and grazers reduce fuels, fire temperatures, and acacia-ant mortality in an African savanna. Ecological Applications 24: 741-749.


Porensky, L.M., S.E. Wittman, C. Riginos, and T.P. Young. 2013. Herbivory and drought interact to enhance diversity and spatial patterning in a savanna understory. Oecologia 173: 591-602.

Donihue, C.M., L.M. Porensky, J. Foufopoulos, C. Riginos, and R.M. Pringle. 2013. Glade cascades: indirect legacy effects of pastoralism enhance the abundance and spatial structuring of arboreal fauna. Ecology 94: 827-837.


Riginos, C., L.M. Porensky, K.E. Veblen, W.O. Odadi, R.L. Sensenig, D. Kimuyu, F. Keesing, M.L. Wilkerson, and T.P. Young. 2012. Lessons on the relationship between pastoralism and biodiversity from the Kenya Long-term Exclosure Experiment (KLEE). Pastoralism 2:10.

Herrick, J.E., S. Andrews, G. Baldi, B.T. Bestelmeyer, J. Brown, J. Davies, M. Duniway, K.M. Havstad, D. Peters, J. Quinton, C. Riginos, P. Shaver, D. Steinaker, and S. Twomlow. 2012. Revolutionary land use change in the 21st century: is (rangeland) science relevant? Rangeland Ecology and Management 65: 590-598.


Riginos, C., J.E. Herrick, S.R. Sundaresan, C. Farley, and J. Belnap. 2011. A simple graphical approach to quantitative monitoring of rangelands. Rangelands 133: 6-13.

Sundaresan, S.R., C. Riginos, and E.S. Abelson. 2011. Management and analysis of camera trap data: alternative approaches (response to Harris et al., 2010). Bulletin of the Ecological Society of America. April 2011.

Augustine, D.J., K.E. Veblen, J.R. Goheen, C. Riginos & T.P. Young. 2011. Pathways for positive cattle-wildlife interactions in semi-arid rangelands. In Conserving Wildlife in African Landscapes: Kenya’s Ewaso Ecosystem (N.J. Georgiadis, ed.). Smithsonian Contributions to Zoology Number 632: 55-72.


Riginos, C. and J.H. Herrick. 2010. Monitoring Rangeland Health: A Guide for Pastoralist Communities and Other Land Managers in Eastern Africa, Version II. Nairobi, Kenya: ELMT-USAID/East Africa.

Treydte, A.C., C. Riginos, and F. Jeltsch. 2010. Enhanced use of beneath-canopy vegetation by grazing ungulates in African savannahs. Journal of Arid Environments 74: 1597-1603.

Sundaresan, S., and C. Riginos. 2010. Lessons learned from biodiversity conservation in the private lands of Laikipia, Kenya. Great Plains Research 20: 2-10.

Goheen, J.R., T. M. Palmer, F. Keesing, C. Riginos, and T.P. Young. 2010. Large herbivores facilitate savanna tree establishment via diverse and indirect pathways. Journal of Animal Ecology 79: 372-382.


Riginos, C., J.H. Herrick, J. Belnap, S.R. Sundaresan, J.S. Worden, and M.F. Kinnaird. 2009. Monitoring Rangeland Health: A Guide for Facilitators and Pastoralist Communities, Version I. Nairobi, Kenya: ELMT-USAID/East Africa.

Riginos, C., J.B. Grace, D.J. Augustine, and T.P. Young. 2009. Local versus landscape-scale effects of savanna trees on grasses. Journal of Ecology, 97: 1337-1345.

Riginos, C. 2009. Grass competition suppresses savanna tree growth across multiple demographic stages. Ecology 90: 335-340.


Riginos, C., and J.B. Grace. 2008. Tree density, wild ungulate habitat use and the herbaceous community in a Kenyan savanna: Top-down versus bottom-up effects. Ecology 89: 2228-2238.

Okello, B.D., T.P. Young, C. Riginos, D. Kelly and T. O’Connor. 2008. Short-term survival and long-term mortality of Acacia drepanolobium after a controlled burn. African Journal of Ecology 46:395-401.


Riginos, C., M.S. Heschel, and J. Schmitt. 2007. Maternal effects of drought stress and inbreeding in Impatiens capensis (Balsaminaceae). American Journal of Botany 94: 1984-1991.

Riginos, C. and T.P. Young. 2007. Positive and negative effects of grasses and wild and domestic herbivores on Acacia saplings in an East African savanna. Oecologia 153: 985-995.


Riginos, C., S.J. Milton, and T. Wiegand. 2005. Context-dependent interactions between adult shrubs and seedlings in a semi-arid shrubland. Journal of Vegetation Science 16: 331-340.

Heschel, M.S. and C. Riginos. 2005. Mechanisms of selection for drought stress tolerance and avoidance in Impatiens capensis (Balsaminaceae). American Journal of Botany 92: 37-44.


Riginos, C. and M.T. Hoffman. 2003. Changes in population biology of two succulent shrubs along a grazing gradient. Journal of Applied Ecology 40: 615-625.