Rue and Brazilian peppertree essential oils inhibit the germination and initial development of the invasive plant lovegrass.

Maldaner, J., Steffen, G. P. K., Missio, E. L., Saldanha, C. W., Morais, R. M. de, Steffen, R. B., (2020). International Journal of Environmental Studies 77(2), 255-263. Routledge, Abingdon, UK. English language

Óleos essenciais de espécies vegetais reduzem a germinação de capim annoni. / Essential oils of plant species reduce the lovegrass germination.

Maldaner, J., Steffen, G. P. K., Steffen, R. B., Missio, E. L., Saldanha, C. W., Morais, R. M. de, Moro, T. S., (2018). Caderno de Pesquisa, Série Biologia 30(2), 9-18. Universidade de Santa Cruz do Sul, Santa Cruz do Sul, Brazil. Portuguese language

Co-invasion of ectomycorrhizal fungi in the Brazilian Pampa biome.

Sulzbacher, M. A., Grebenc, T., Bevilacqua, C. B., Steffen, R. B., Coelho, G., Silveira, A. O., Jacques, R. J. S., Antoniolli, Z. I., (2018). Applied Soil Ecology 130, 194-201. Elsevier B.V., Amsterdam, Netherlands. English language

Earthworm diversity in Rio Grande do Sul, Brazil.

Steffen, G. P. K., Steffen, R. B., Bartz, M. L. C., James, S. W., Jacques, R. J. S., Brown, G. G., Antoniolli, Z. I., (2018). Zootaxa 4496(1), 562-575. Magnolia Press, Auckland, New Zealand. English language

Earthworm extraction with onion solution.

Steffen, G. P. K., Antoniolli, Z. I., Steffen, R. B., Jacques, R. J. S., Santos, M. L. dos, (2013). Applied Soil Ecology 69, 28-31. Elsevier Ltd, Oxford, UK. English language