Roper, J, J., Sullivan, K. A., Ricklefs, R. E. 2010. Avoid nest predation when predation rates are low, and other lessons: testing the tropical-temperate nest predation paradigm. Oikos 119: 719–729.

Kremer, L., Rocha, R. and Roper, J. J. 2010. An experimental test of colonization ability in the potentially invasive Didemnum perlucidum (Tunicata, Ascidiacea). Biol Invasions 12:1581–1590

Lima, A. M. X. and Roper, J. J. 2009. Population dynamics of the black-cheeked gnateater (Conopophaga melanops, Conopophagidae) in southern Brazil. Journal of Tropical Ecology 25:605–613.

Lima, A. M. X. and Roper, J. J. 2009. The use of playbacks can influence encounters with birds: an experiment. Revista Brasileira de Ornitologia, 17:37-40.

Ritzmann, N. F., Rocha, R. M. and Roper, J. J. 2009. Sexual and asexual reproduction in Didemnum rodriguesi (Ascidiacea, Didemnidae). Iheringia 99:106-110

Cardoso, M.Z., Roper, J. J., Gilbert, L.E. 2009. Prenuptial agreements: mating frequency predicts gift-giving in Heliconius species. Entomologia Experimentalis et Applicata 131:109-114 doi:10.1111/j.1570-7458.2009.00837.x

Pichorim, M., Roper, J. J. and Monteiro Filho, E. L. de A. 2009. Experimental Study of Nest-site Selection in the Biscutate Swift (Streptoprocne biscutata, Aves: Apodidae) in Southern Brazil. doi:10.1111/j.1744-7429.2008.00457.

Rafael, M. S., Hereira-Rojas, W. J., Roper, J. J., Nunomura, S.M. and Tadei, W.P. 2008. Potential control of Aedes aegypti (Diptera: Culicidae) with Piper aduncum L. (Piperaceae) extracts demonstrated by chromosomal biomarkers and toxic effects on interphase nuclei. Genetics and Molecular Research, 7:772-781

Popp, L. G., Serafini, P. P., Reghelin, A. L., Spercoski, K. P., Roper, J. J. and Morais, R. N. 2008. Annual pattern of fecal corticoid excretion in captive Red-Tailed parrots (Amazona brasiliensis). Journal of Comparative Physiology - B. DOI 10.1007/s00360-007-0241-9

Tolentino, K. Roper, J. J., Passos, F. C. and Strier, K. B. 2008. Mother-offspring associations in Northern muriquis, Brachyteles hypoxanthus. American Journal of Primatology. 70:301–305

Neves, C. S., Rocha, R. M., Roper, J. J. 2007. Artificial substrate use by introduced and cryptogenic marine species in Paranaguá Bay, southern Brazil. Biofouling:319-330.

Machado, R. A. ; Roper, J. J. 2007. Agalychnis callidryas Reproduction. Herpetological Review. 38: 177

Roper, J. J. 2006. What does "Wildlife Management" mean for Brazil?. Natureza e Conservação, Brazil, 4:107-116.

Roper, J. J. 2005. Dicas para escrever em inglês - Do's and Don't's. Ararajuba: Revista Brasileira de Ornitologia, São Leopoldo, RS, v. 13, n. 2, p. 193-196.

Sari, L. T. Ribeiro-Costa, C. S. Roper, J. J. 2005. Dinâmica populacional de bruquíneos (Coleóptera, Chrysomelidae) em Senna multijuga (Rich.)H. S. Irwin & Barneby (Caesalpinaceae). Revista Brasileira de Zoologia 22: 169-174.

Roper, J. J. 2005. Sexually Distinct Songs in the Duet of the Sexually Monomorphic Rufous Hornero (Furnarius rufus). Journal of Field Ornithology, 76:235-237.

Torres, R. A., Roper, J. J., Foresti, F., Oliveira, C. 2005. Surprising genomic diversity in the Neotropical fish Synbranchus marmoratus (Teleosti, Synbranchidae): how many species?. Neotropical Ichthyology, 3:127-134.

Roper, J. J. 2005. Try and try again: Nest Predation Favors Persistence in a Tropical Bird. Ornitología Neotropical 16:253-262.

Lima, A. M. X., Roper, J. J. 2004. Aves de remanescentes florestais em áreas urbanas: ferramentas para a conservação. Anais do IV Congresso Brasileiro de Unidades de Conservação, Curitiba, p. 17-21.

Roper, J. J. 2003. Biased sex ratio or biased analysis?. Natureza & Conservação, 1:63-65.

Roper, J. J. 2003. Nest-sites influence predation differently at natural and experimental nests. Ornitología Neotropical, 14:1-14.

Marques, M. C. M., Roper, J. J., Salvalaggio, A. P. B. 2003.

Phenological patterns among plant life-forms in a subtropical forest in southern Brazil. Plant Ecology, Holland.

Roper, J. J. 2000.Experimental analysis of nest-sites and nest predation for a neotropical bird: stuck between a rock and a hard place. Ararajuba 8:85-91.

Sullivan, K. A., Roper, J. J., Weathers, W. W. 1999. Individual Variation In Renesting Intervals, Daily Energy Expenditure, And Reproductive Success in Passerines. Proceedings of the 22nd International Ornithological Congress, v. 22

Roper, J. J.; Goldstein, R. R. 1997. A test of the Skutch Hypothesis: does activity at nests increase predation risk?. The Journal of Avian Biology, 28:111-116.

Sullivan, K. A., Roper, J. J. 1996. The Importance Of Predation On Post-Fledging Survival In Passerine Birds. Transactions of the 61st North American Wildlife and Natural Resources Conference, v. 61.

Roper, J. J. 1992. Nest Predation Experiments With Quail Eggs: Too Much To Swallow? Oikos 65:528-530.

Martin, T. E., Roper, J. J. 1988. Nest Predation And Nest-Site Selection In A Western Population of the Hermit Thrush. Condor 90:51-57