Abiven, S., A. Hund, V. Martinsen, and G. Cornelissen. 2015. Biochar amendment increases maize root surface areas and branching: a shovelomics study in Zambia. Plant and Soil:1-11.

Alling, V., S. E. Hale, V. Martinsen, J. Mulder, A. Smebye, G. D. Breedveld, and G. Cornelissen. 2014. The role of biochar in retaining nutrients in amended tropical soils. Journal of Plant Nutrition and Soil Science 177:671-680.

Austrheim, G., J. D. M. Speed, M. Evju, A. Hester, Ø. Holand, L. E. Loe, V. Martinsen, R. Mobæk, J. Mulder, H. Steen, D. B. A. Thompson, and A. Mysterud. 2016. Synergies and trade-offs between ecosystem services in an alpine ecosystem grazed by sheep–an experimental approach. Basic and Applied Ecology.

Austrheim, G., J. D. M. Speed, V. Martinsen, J. Mulder, and A. Mysterud. 2014. Experimental Effects of Herbivore Density on Aboveground Plant Biomass in an Alpine Grassland Ecosystem. Arctic, Antarctic, and Alpine Research 46:535-541.

Cornelissen, G., V. Martinsen, V. Shitumbanuma, V. Alling, G. Breedveld, D. Rutherford, M. Sparrevik, S. Hale, A. Obia, and J. Mulder. 2013. Biochar Effect on Maize Yield and Soil Characteristics in Five Conservation Farming Sites in Zambia. Agronomy 3:256-274.

Davies, J. A. C., E. Tipping, E. C. Rowe, J. F. Boyle, E. Graf Pannatier, and V. Martinsen. 2016. Long-term P weathering and recent N deposition control contemporary plant-soil C, N and P. Global Biogeochemical Cycles:231-249.

Hale, S. E., V. Alling, V. Martinsen, J. Mulder, G. D. Breedveld, and G. Cornelissen. 2013a. The sorption and desorption of phosphate-P, ammonium-N and nitrate-N in cacao shell and corn cob biochars. Chemosphere 91:1612-1619.

Hale, S. E., J. Jensen, L. Jakob, P. Oleszczuk, T. Hartnik, T. Henriksen, G. Okkenhaug, V. Martinsen, and G. Cornelissen. 2013b. Short-Term Effect of the Soil Amendments Activated Carbon, Biochar, and Ferric Oxyhydroxide on Bacteria and Invertebrates. Environmental Science & Technology 47:8674-8683.

Martinsen, V., V. Alling, N. L. Nurida, J. Mulder, S. E. Hale, C. Ritz, D. W. Rutherford, A. Heikens, G. D. Breedveld, and G. Cornelissen. 2015. pH effects of the addition of three biochars to acidic Indonesian mineral soils. Soil Science and Plant Nutrition:1-14.

Martinsen, V., G. Austrheim, A. Mysterud, and J. Mulder. 2011a. Effects of herbivory on N-cycling and distribution of added (15)NH(4)(+) in N-limited low-alpine grasslands. Plant and Soil 347:279-292.

Martinsen, V., F. Grund, M. Kjeve Ness, H. A. de Wit, G. Austrheim, A. Mysterud, and J. Mulder. 2013. Differences in the quality of seepage water and runoff casued by plant community and grazing at an alpine site in Hol, Southern Norway. Water Air and Soil Pollution 224.

Martinsen, V., J. Mulder, G. Austrheim, D. O. Hessen, and A. Mysterud. 2012. Effects of sheep grazing on availability and leaching of soil nitrogen in low-alpine grasslands. Arctic, Antarctic and Alpine Research 44:67-82.

Martinsen, V., J. Mulder, G. Austrheim, and A. Mysterud. 2011b. Carbon storage in low-alpine grassland soils: effects of different grazing intensities of sheep. European Journal of Soil Science 62:822-833.

Martinsen, V., J. Mulder, V. Shitumbanuma, M. Sparrevik, T. Børresen, and G. Cornelissen. 2014. Farmer-led maize biochar trials: Effect on crop yield and soil nutrients under conservation farming. Journal of Plant Nutrition and Soil Science 177:681-695.

Mysterud, A., D. O. Hessen, R. Mobæk, V. Martinsen, J. Mulder, and G. Austrheim. 2011. Plant quality, seasonality and sheep grazing in an alpine ecosystem. Basic and Applied Ecology 12:195-206.

Obia, A., T. Børresen, V. Martinsen, G. Cornelissen, and J. Mulder. 2017. Vertical and lateral transport of biochar in light-textured tropical soils. Soil and Tillage Research 165:34-40.

Obia, A., J. Mulder, V. Martinsen, G. Cornelissen, and T. Børresen. 2016. In situ effects of biochar on aggregation, water retention and porosity in light-textured tropical soils. Soil and Tillage Research 155:35-44.

Schmidt, H., B. Pandit, V. Martinsen, G. Cornelissen, P. Conte, and C. Kammann. 2015. Fourfold Increase in Pumpkin Yield in Response to Low-Dosage Root Zone Application of Urine-Enhanced Biochar to a Fertile Tropical Soil. Agriculture 5:723.

Sjögersten, S., C. Alewell, L. C‚cillon, F. Hagedorn, R. Jandl, J. Leifeld, V. Martinsen, A. Schindlbacher, M. T. Sebasti , and H. Van Miegroet. 2011. Mountain soils in a changing climate - vulnerability of carbon stocks and ecosystem feedbacks. Pages 118-148 in R. Jandl, M. Rodeghiero, and M. Olsson, editors. Soil carbon in sensitive European ecosystems: from science to land management. Wiley-Blackwell, Chichester.

Sparrevik, M., C. Adam, V. Martinsen, Jubaedah, and G. Cornelissen. 2015. Emissions of gases and particles from charcoal/biochar production in rural areas using medium-sized traditional and improved “retort” kilns. Biomass and Bioenergy 72:65-73.

Sparrevik, M., J. L. Field, V. Martinsen, G. D. Breedveld, and G. Cornelissen. 2013. Life Cycle Assessment to Evaluate the Environmental Impact of Biochar Implementation in Conservation Agriculture in Zambia. Environmental Science & Technology 47:1206-1215.

Speed, J. D. M., V. Martinsen, A. J. Hester, Ø. Holand, J. Mulder, A. Mysterud, and G. Austrheim. 2015. Continuous and discontinuous variation in ecosystem carbon stocks with elevation across a treeline ecotone. Biogeosciences 12:1615-1627.

Speed, J. M., V. Martinsen, A. Mysterud, J. Mulder, Ø. Holand, and G. Austrheim. 2014. Long-Term Increase in Aboveground Carbon Stocks Following Exclusion of Grazers and Forest Establishment in an Alpine Ecosystem. Ecosystems:1-13.