Johnson, R. A. 1981. Application of the guild concept to enviromental
   impact analysis of terrestrial vegetation. Journal of Environmental
   Management 13:205-222.

Johnson, R. A., M. F. Willson, J. N. Thompson, and R. I. Bertin. 1985.
   Nutritional values of wild fruits and consumption by migrant
   frugivorous birds. Ecology 66:819-827.

Johnson, R. A. 1986. Intraspecific resource partitioning in the bumblee
   bees Bombus ternarius and B. pennsylvanicus. Ecology 67:133-138.

Rissing, S. W., R. A. Johnson, and G. B. Pollock. 1986. Natal nest
   distribution and pleometrosis in the leafcutter ant Acromyrmex
   versicolor. Psyche 93:177-186.

Johnson, R. A., S. W. Carothers, and T. J. McGill. 1987. Demography of
   feral burros in the Mohave Desert. Journal of Wildlife Management  
   51:616-620.

Johnson, R.A., and S. W. Rissing. 1990. Comparative learning and memory
   of two sympatric seed-harvester ants. Pp. 552-553 In: Social insects and
   the environment, G.K. Veeresh, B. Mallik, and C.A. Vikaktamath (eds.).   
   Oxford and IBH Publishing Co., PVT, LTD., New Delhi, India, 765 pp.

Johnson, R. A. 1992. Pollination and reproductive ecology of acuña
   cactus, Echinomastus erectrocentrus var. acunensis. International
   Journal of Plant Sciences 153:400-408.

Johnson, R. A. 1991. Comparative foraging efficiency of two species of
   desert seed-harvester ants: effects of learning and memory. Ecology
   72:1408-1419.

Johnson, R. A. 1992. Soil texture as an influence on the distribution
   of the desert seed-harvester ants Pogonomyrmex rugosus and Messor
   pergandei. Oecologia 89:118-124.

Johnson, R. A., and S. W. Rissing. 1993. Breeding biology of the leaf-
   cutter ant Acromyrmex versicolor (Pergande) (Hymenoptera:
   Formicidae). Journal of the Kansas Entomological Society 66:127-128.

Johnson, R. A., M. A. Baker, D. J. Pinkava, and G. A. Ruffner. 1993.
   Seedling establishment, mortality, growth, and flower production in
   acuña cactus, Echinomastus erectrocentrus var. acunensis. Pp.
   170-180, In: Sivinski, R., and K. Lightfoot (eds.). Proceedings of
   the Southwestern Rare and Endangered Plant Conference, Santa Fe,
   New Mexico. 

Lighton, J. R. B., D. A. Garrigan, F. D. Duncan, and R. A. Johnson.
   1993. Spiracular control of respiratory water loss in female alates
   of the harvester ant Pogonomyrmex rugosus. Journal of Experimental
   Biology 179:233-244.

Johnson, R. A., S. W. Rissing, and P. R. Killeen. 1994. Differential
   learning and memory by two co-occurring ant species. Insectes Sociaux
   41:165-177.

Johnson, R. A. 1994. Distribution and natural history of the workerless
   inquiline ant Pogonomyrmex anergismus Cole (Hymenoptera: Formicidae).    Psyche 101:257-262.

Johnson, R. A., J. D. Parker, and S. W. Rissing. 1996. Rediscovery of
   the workerless inquiline ant Pogonomyrmex colei and additional notes
   on natural history (Hymenoptera: Formicidae). Insectes Sociaux
   43:69-76.

Johnson, R. A. 1998. Foundress survival and brood production in the
   desert seed-harvester ants Pogonomyrmex rugosus and P. barbatus.
   Insectes Sociaux 45:255-266.

Johnson, R. A. 1998. Desiccation resistance in North American seed-
    harvester ants: local and latitudinal patterns in body size and habitat.
   Pg. 521, In: Schwarz, M. P. and Hogendoorn, K. (eds.). Social insects
   at the turn of the millenium. Proceedings of the XIII International Congress    of the IUSSI.

Rissing, S. W., R. A. Johnson, and J. W. Martin. 2000. Colony founding
   behavior of some desert ants: geographic variation in metrosis.
   Psyche 103:95-101.

Johnson, R. A. 2000. Water loss in desert ants: caste variation and the
   effect of cuticle abrasion. Physiological Entomology 25:48-53.

Johnson, R. A. 2000. Habitat segregation based on soil texture and body
   size in the seed-harvester ants Pogonomyrmex barbatus and P. rugosus.
   Ecological Entomology 25:403-412.

Johnson, R. A. 2000. Reproductive biology of the seed-harvester ants
   Messor julianus (Pergande) and Messor pergandei (Mayr) (Hymenoptera:
   Formicidae) in Baja California, Mexico. Journal of Hymenoptera
   Research 9:377-384.

Johnson, R.A. 2000. Seed-harvester ants (Hymenoptera: Formicidae) of
   North America: an overview of ecology and biogeography. Sociobiology
   35:83-122.

Baker, M.A. and R.A. Johnson. 2000. Morphometric analysis of Escobaria
  sneedii var. sneedii, E. sneedii var. leei and E. guadalupensis (Cactaceae).
   Systematic Botany 25:577-587.

Johnson, R. A. 2001. Biogeography and community structure of North
   American seed-harvester ants. Annual Review of Entomology 46:1-29.

Johnson, R.A. 2002. Semi-claustral colony founding in the seed-
   harvester ant Pogonomyrmex californicus: a comparative analysis of
   colony founding strategies. Oecologia 132:60-67.

Cahan, S.H., J.D. Parker, S.W. Rissing, R.A. Johnson, T.S. Polony, M.D.
   Weiser, and D.R. Smith. 2002. Extreme genetic differences between
   queens and workers in hybridizing Pogonomyrmex harvester ants.
   Proceedings of the Royal Society of London, B 269:1871-1877.

Julian, G.E., J.H. Fewell, J. Gadau, R.A. Johnson, and D. Larrabee.
   2002. Genetic determination of the queen caste in an ant hybrid zone.
   Proceedings of the National Academy of Sciences USA 99:8157-8160.

Johnson, R.A. and P.S. Ward. 2002. Biogeography and endemism of ants in
   Baja California: a first overview. Journal of Biogeography 29:1009-1026.

Hahn, D.A., R.A. Johnson, N.A. Buck, and D.E. Wheeler. 2004. Storage
   protein content as a functional marker for colony founding strategies: a    comparative study within the harvester ant genus, Pogonomyrmex.
   Physiological and Biochemical Zoology 77:100-108.  

Johnson, R.A. 2004. Colony founding by pleometrosis in the semi-claustral    seed-harvester ant Pogonomyrmex californicus (Hymenoptera:    Formicidae). Animal Behaviour 68: 1189-1200.

Gibbs, A.G. and R.A. Johnson. 2004. Discontinuous ventilation by insects:    the chthonic hypothesis does ot hold water. Journal of Experimental    Biology 207:3477-3482.

Johnson, R.A. and A.G. Gibbs. 2004. Effects of mating status on cuticular    hydrocarbons, metabolism and water balance in the desert harvester ant    Pogonomyrmex barbatus. Journal of Insect Physiology 50:943-953.

Johnson, R.A. 2006. Capital and income breeding and the evolution of     colony founding strategies in ants. Insectes Sociaux, 53: 316-322.

Johnson, R.A. 2006. Biogeographical parallels between plants and ants in North American deserts (Hymenoptera: Formicidae; Spermatophyta). Myrmecological News, 8: 209-218.

Anderson, K.E., J. Gadau, B.M. Mott, R.A. Johnson, A. Altamirano, C. Strehl, and J.H. Fewell. 2006. Distribution and evolutionary history of genetic caste determination in seed-harvester ants Pogonomyrmex barbatus and P. rugosus. Ecology, 87:2171-2184 .

Kronauer, D.J.C., R.A. Johnson and J.J. Boomsma. 2007. The evolution of multiple mating in army ants. Evolution 61: 413-422.

Johnson, R,.A., C.T. Holbrook, C. Strehl and J. Gadau. 2007. Population and colony structure and morphometrics in the queen dimorphic harvester ant, Pogonomyrmex pima. Insectes Sociaux 54: 77-86.

POPULAR ARTICLES

Johnson, R. A. 1996. Arizona ants. Arizona Wildlife Views. June, pp. 2-5.