Biography
Dr Wakene Negassa is a soil scientist with over two decades of academic and research expertise. He holds a Bachelor of Science (BSc) and a Master of Science (MSc) in Plant and Soil Sciences, laying the foundation for his career. His scientific journey began at the Oromia Agricultural Research Institute in Ethiopia, where he dedicated over a decade to advancing soil and water management research. Later, he transitioned into academia as a Soil Science lecturer at Hawassa University, further expanding his teaching and research experience.
Driven by a passion for tropical soil chemistry, Dr Negassa pursued his PhD in Soil Science at the University of Rostock, Germany, specialising in phosphorus transformation, agricultural waste recycling, and phosphorus speciation in tropical soils. After completing his doctorate, he briefly contributed to the Ethiopian Institute of Agricultural Research before relocating to the United States, where he served as a postdoctoral researcher at Michigan State University for three years. He investigated soil organic carbon sequestration mechanisms, greenhouse gas emissions, and sustainable soil management practices there.
Returning to Germany, Dr Negassa joined the Institute for Advanced Sustainability Studies in Potsdam, Germany, as a research fellow, focusing on rehabilitating degraded soils and promoting sustainable land use. He continued his research at the University of Rostock for over four years, delving into peatland biogeochemistry and studying the long-term effects of peatland drainage and restoration on soil organic matter and dissolved organic matter molecular-chemical composition, functional groups, and elemental speciation. He also worked as a freelance researcher before joining the University of Copenhagen, where he briefly worked on phosphorus recycling.
A strong advocate for global collaboration, Dr Negassa has established extensive partnerships across North America, Europe, Africa, and Asia. He actively engages with policymakers to advance soil health strategies that enhance food security, environmental sustainability, and climate resilience. Beyond research, Dr Negassa is a dedicated educator who teaches undergraduate and graduate soil science courses and supervises several graduate and undergraduate students of soil and environmental sciences. Additionally, he is an active peer reviewer for numerous scientific journals and funding agencies and an associate editor for scientific journals.
Publications
Journals
- C. Acosta, A.; Arias, C. A; Biller, P.; Wittig , N.K. ; Baragau, I.-A.; Ravenni , G.; Alhnidi, M.J.; Abramiuc, L. E.; Sarossy , Z.; Benedini , L.; Negassa, W.; Popescu , D.-G.; Marulanda , V.F.; Müller-Stover, D.S.; Brix, H. (2024) Hydrothermal carbonization and pyrolysis in wetland engineering Carbon sequestration, phosphorus recovery, and structural characterization of willowbased chars with Xray μcomputed tomography, Chemical Engineering Journal, 492, 151916
- Meersmans, J.; Colinet, G.; Negassa, W. (2024) Editorial Soil health, functions, and ecosystem services insights into soil parameters and methods of integration, Frontiers in Environmental Science, 12, 1358548
- Jandl, G.; Negassa, W.; Eckhardt, K.; Leinweber, P. (2023) Peat Formation in Rewetted Fens as Reflected by Saturated nAlkyl Acid Concentrations and Patterns, Land, 12, 1768
Prior to appointment
- W. Negassa; W. Klysubun; P. Leinweber (2022) Sulfur speciation in drained and restored minerotrophic peatland types of northeastern Germany, JOURNAL OF ENVIRONMENTAL MANAGEMENT
- W. Negassa; C. Baum; F. Beyer; P. Leinweber (2022) Spatial Variability of Selected Soil Properties in Long-Term Drained and Restored Peatlands, FRONTIERS IN ENVIRONMENTAL SCIENCE
- W. Negassa; K. U. Eckhardt; T. Regier; P. Leinweber (2021) Dissolved organic matter concentration, molecular composition, and functional groups in contrasting management practices of peatlands, JOURNAL OF ENVIRONMENTAL QUALITY
- M. Weil; H. T. Wang; M. Bengtsson; D. Köhn; A. Günther; G. Jurasinski; J. Couwenberg; W. Negassa; D. Zak; T. Urich (2020) Long-Term Rewetting of Three Formerly Drained Peatlands Drives Congruent Compositional Changes in Pro- and Eukaryotic Soil Microbiomes through Environmental Filtering, MICROORGANISMS
- W. Negassa; D. Michalik; W. Klysubun; P. Leinweber (2020) Phosphorus Speciation in Long-Term Drained and Rewetted Peatlands of Northern Germany, SOIL SYSTEMS
- G. Jurasinski; S. Ahmad; A. Anadon-Rosell; J. Berendt; F. Beyer; R. Bill; G. Blume-Werry; J. Couwenberg; A. Günther; H. Joosten; F. Koebsch; D. Köhn; N. Koldrack; J. Kreyling; P. Leinweber; B. Lennartz; H. J. Liu; D. Michaelis; A. Mrotzek; W. Negassa; S. Schenk; F. Schmacka; S. Schwieger; M. Smiljanic; F. Tanneberger; L. Teuber; T. Urich; H. T. Wang; M. Weil; M. Wilmking; D. Zak; N. Wrage-Mönnig (2020) From Understanding to Sustainable Use of Peatlands: The WETSCAPES Approach, SOIL SYSTEMS
- G. W. Sileshi; B. Jama; B. Vanlauwe; W. Negassa; R. Harawa; A. Kiwia; D. Kimani (2019) Nutrient use efficiency and crop yield response to the combined application of cattle manure and inorganic fertilizer in sub-Saharan Africa, NUTRIENT CYCLING IN AGROECOSYSTEMS
- W. Negassa; C. Baum; A. Schlichting; J. Müller; P. Leinweber (2019) Small-Scale Spatial Variability of Soil Chemical and Biochemical Properties in a Rewetted Degraded Peatland, FRONTIERS IN ENVIRONMENTAL SCIENCE
- W. Negassa; A. Acksel; K. U. Eckhardt; T. Regier; P. Leinweber (2019) Soil organic matter characteristics in drained and rewetted peatlands of northern Germany: Chemical and spectroscopic analyses, GEODERMA
- M. Y. Quigley; W. C. Negassa; A. K. Guber; M. L. Rivers; A. N. Kravchenko (2018) Influence of Pore Characteristics on the Fate and Distribution of Newly Added Carbon, FRONTIERS IN ENVIRONMENTAL SCIENCE
- W. Negassa; G. W. Sileshi (2018) Integrated soil fertility management reduces termite damage to crops on degraded soils in western Ethiopia, AGRICULTURE ECOSYSTEMS & ENVIRONMENT
- J. Beehler; J. Fry; W. Negassa; A. Kravchenko (2017) Impact of cover crop on soil carbon accrual in topographically diverse terrain, JOURNAL OF SOIL AND WATER CONSERVATION
- W. C. Negassa; A. K. Guber; A. N. Kravchenko; T. L. Marsh; B. Hildebrandt; M. L. Rivers (2015) Properties of Soil Pore Space Regulate Pathways of Plant Residue Decomposition and Community Structure of Associated Bacteria, PLOS ONE
- W. Negassa; R. F. Price; A. Basir; S. S. Snapp; A. Kravchenko (2015) Cover crop and tillage systems effect on soil CO2 and N2O fluxes in contrasting topographic positions, SOIL & TILLAGE RESEARCH
- R. Lal; W. Negassa; K. Lorenz (2015) Carbon sequestration in soil, CURRENT OPINION IN ENVIRONMENTAL SUSTAINABILITY
- A. N. Kravchenko; W. C. Negassa; A. K. Guber; M. L. Rivers (2015) Protection of soil carbon within macro-aggregates depends on intra-aggregate pore characteristics, SCIENTIFIC REPORTS
- A. N. Kravchenko; W. C. Negassa; A. K. Guber; B. Hildebrandt; T. L. Marsh; M. L. Rivers (2014) Intra-aggregate Pore Structure Influences Phylogenetic Composition of Bacterial Community in Macroaggregates, SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
- A. N. Kravchenko; W. Negassa; A. K. Guber; S. Schmidt (2014) New Approach to Measure Soil Particulate Organic Matter in Intact Samples using X-Ray Computed Microtomography, SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
- W. Negassa; C. Baum; P. Leinweber (2012) Evaluation of agro-industrial by-products as nutrient source for plant growth, ARCHIVES OF AGRONOMY AND SOIL SCIENCE
- W. Negassa; C. Baum; P. Leinweber (2011) Soil amendment with agro-industrial byproducts: molecular-chemical compositions and effects on soil biochemical activities and phosphorus fractions, JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
- W. Negassa; J. Kruse; D. Michalik; N. Appathurai; L. Zuin; P. Leinweber (2010) Phosphorus Speciation in Agro-Industrial Byproducts: Sequential Fractionation, Solution 31P NMR, and P K– and L2,3-Edge XANES Spectroscopy, ENVIRONMENTAL SCIENCE & TECHNOLOGY
- J. Kruse; W. Negassa; N. Appathurai; L. Zuin; P. Leinweber (2010) Phosphorus Speciation in Sequentially Extracted Agro-Industrial By-Products: Evidence from X-ray Absorption Near Edge Structure Spectroscopy, JOURNAL OF ENVIRONMENTAL QUALITY
- W. Negassa; P. Leinweber (2009) How does the Hedley sequential phosphorus fractionation reflect impacts of land use and management on soil phosphorus: A review, JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
- W. Negassa; S. Dultz; A. Schlichting; P. Leinweber (2008) Influence of specific organic compounds on phosphorus sorption and distribution in a tropical soil, SOIL SCIENCE
- W. Negassa; H. Gebrekidan; D. K. Friesen (2005) Integrated use of farmyard manure and NP fertilizers for maize on farmers’ fields, JOURNAL OF AGRICULTURE AND RURAL DEVELOPMENT IN THE TROPICS AND SUBTROPICS
Technical / contract reports
- Pakeman, R.; Baggaley, N.; Negassa, W.; Glendell, M.; Hawes, C.; Karley, A.; Loades, K.; Neilson, R.; Paterson, E.; Stutter, M.; Conington, J.; Potts, J.; Skuce, P. (2024) Understanding metrics for effective environmental measures under the Agricultural Reform Programme for Scotland, Edinburgh Research Archive – ClimateXChange Publications
- Pakeman, R.; Baggaley, N.; Chewaka, W.; Glendell, M.; Hawes, C.; Karley, A.; Loades, K.; Neilson, R.; Paterson, E.; Stutter, M.; Conington, J.; Miller, G.; Skuce, P.; Potts, J. (2024) Understanding metrics for effective environmental measures under the Agricultural Reform Programme for Scotland, ClimateXChange