
Dipl. Geogr. Andre Velescu
- Researcher
- Research, Teaching, Head of Laboratory
- Group: Soil
- Room: 703.1/3 in Geb. 10.50
- Phone: +49 721 608-41622
- Fax: +49 721 608-43738
- andre velescu ∂does-not-exist.kit edu
Karlsruher Institut für Technologie (KIT)
Institut für Geographie und Geoökologie
Reinhard-Baumeister-Platz 1
76131 Karlsruhe
Germany
Andre Velescu
Topics
- Element cycles and nutrient input in a tropical montane forest in the Andes of South Ecuador
- Nutrient manipulation experiments in tropical ecosystem research
- Tracer experiments with 15N isotopes to study the fate and transformation of Nitrogen in temperate and tropical ecosystems
- Monitoring of environmental field parameters using automatic data collection
Curriculum Vitae
Since 2015 | Researcher and head of the laboratory at the Institute of Geography and Geoecology of the Karlsruhe Institute of Technology, Geomorphology and Soil Science Group. |
Since 2011 | PhD position at the Institute of Geography of the University of Bern, Soil Science Group. Title of the Dissertation: „Response of element cycles to increased nutrient input in a tropical montane rain forest in South Ecuador“. |
2009-2010 | Research assistant at the Institute of Geography of the Eberhard Karls University of Tübingen, Chair of Physical Geography. |
2002-2009 | Study of Geography, Geology and Geochemistry at the Eberhard Karls University of Tübingen. Title of the Diploma thesis: “Heterogeneity of soil factors in the humid-tropical mountainous landscape of the Río Huehuetán catchment (Chiapas, Mexico)”. |
Projects
Since 2018 | Nutrient supply as driver of biomass production and associated ecosystem water fluxes along a land-use and climate gradient (DFG, WI 1601/26-1). The project is part of the DFG Research Unit 2730 - Environmental changes in biodiversity hotspot ecosystems of South Ecuador: response and feedback effects (RESPECT). www.tropicalmountainforest.org |
2014-2017 | Nutrient cycles and their response to climate change in a tropical montane rain forest in the Andes of South Ecuador. Project of the Research Platform DFG PAK 823-825: Platform for Biodiversity, Ecosystem Monitoring and Research in South Ecuador. www.tropicalmountainforest.org |
2011–2013 | Response of element cycles in a tropical mountain rain forest to environmental and land-use change. Project of the Research Unit DFG FOR 816: Biodiversity and Sustainable Management of a Megadiverse Mountain Ecosystem in South Ecuador. www.tropicalmountainforest.org |
2011–2013 | Effects of plant diversity on the soil nutrient cycle. Project of the Swiss National Science Foundation (SNF) within the framework of the DFG Research Unit FOR 1451: Exploring mechanisms underlying the relationship between biodiversity and ecosystem functioning. www.jena-experiment.de |
2007–2009 | Investigation of water resources in the catchment of the Río Huehuetán, Chiapas, Mexico. Research project of the Mexican Water Commission (CONAGUA), México D.F., Mexico. |
Presentations
Oral presentations
Velescu, A., Leimer, S., Valarezo, C., Wilcke, W. (2019): Total organic carbon concentrations in ecosystem solutions of a remote tropical montane forest respond to global environmental change. Conference of the German Society of Soil Science and of the Swiss Soil Science Society, 25.-28. August 2019, Bern.
Fabian, T., Velescu, A., Nellessen, T., Wilcke, W. (2019): Sodium limitation of soil fauna affects decomposition processes in a tropical montane forest in South Ecuador. Conference of the German Society of Soil Science and of the Swiss Soil Science Society, 25.-28. August 2019, Bern.
Velescu, A., Bigalke, M., Boy, J., Valarezo, C., Wilcke, W. (2018): Biological vs. abiotic control of base metal budgets in a tropical montane forest in South Ecuador. Annual Conference of the Society for Tropical Ecology, 26.-30. March 2018, Paris.
Fabian, T., Velescu, A., Wilcke, W. (2018): Sodium retention in the canopy of a tropical montane forest in South Ecuador. Annual Conference of the Society for Tropical Ecology, 26.-30. March 2018, Paris.
Velescu, A., Leimer, S., Willimann, E., Trachte, K., Peters, T., Rollenbeck, R., Bendix, J., Wilcke, W. (2016): Response of element budgets of a tropical montane forest to climate change and nitrogen deposition. Annual Conference of the Society for Tropical Ecology, 23.-26. April 2016, Göttingen.
Leimer, S., Velescu, A., Peña Herrera, J.M., Emck, P., Peters, T., Rollenbeck, R., Trachte, K., Bendix, J., Wilcke, W. (2015): Biogeochemical and biological responses of a tropical montane ecosystem in Ecuador to environmental change. Conference of the German Society of Soil Science, 5.-10. September 2015, München.
Bandowe, B.A.M., Meusel, H., Leimer, S., Velescu, A., Strecker, T., Oelmann, Y., Eisenhauer, N., Scheu, S., Hoffmann, T., Wilcke, W. (2015): The effect of plant diversity on polycyclic aromatic hydrocarbons (PAHs) and their derivatives in soils: Results from the Jena Experiment. Conference of the German Society of Soil Science, 5.-10. September 2015, München.
Velescu, A., Homeier, J., Wilcke, W. (2015): Response of dissolved organic matter in ecosystem solutions to moderate N, P and N+P additions to a tropical montane forest in southern Ecuador. Annual Conference of the Society for Tropical Ecology, 7.-10. April 2015, Zürich.
Velescu, A., Homeier, J., Wilcke, W. (2014): Low-level N, P and N+P amendments to a tropical montane forest in Ecuador: Response of C and N cycles during the first five years. Annual Conference of the Society for Tropical Ecology, 24.-28. February 2014, Freising.
Camenzind, T., Donnellan Barraclough, A.M., Gensing, A., Hempel, S., Hertel, D., Homeier, J., Velescu, A., Rillig, M.C. (2013): Arbuscular mycorrhizal abundance and community structure observed in a tropical montane forest in response to nutrient additions. Annual Conference of the Society for Ecology, 9.-13. September 2013, Potsdam.
Velescu, A., Valarezo, C., Wilcke, W. (2012): Biogeochemical responses to increasing N deposition in a tropical mountain forest in southern Ecuador. Annual Conference of the Society for Tropical Ecology, 20.-24. February 2012, Erlangen.
Poster
Fabian, T., Velescu, A., Camenzind, T., Wilcke, W., Rillig, M.C. (2017): Sodium in a tropical montane forest in South Ecuador: demand of phyllosphere microorganisms and effects on decomposition. Conference of the German Society of Soil Science, 3.-6. September 2017, Göttingen.
Velescu, A., Fabian, T., Wilcke, W. (2016): Nutrient availability drives dissolved organic matter cycling in a tropical montane forest of Ecuador. Annual Conference of the Society for Tropical Ecology, 23.-26. April 2016, Göttingen.
Fabian, T., Velescu, A., Camenzind, T., Wilcke, W., Rillig, M.C. (2016): Sodium shortage increases Na retention in the phyllosphere and affects decomposition processes in a tropical montane forest in South Ecuador. Annual Conference of the Society for Tropical Ecology, 23.-26. April 2016, Göttingen.
Leimer, S., Velescu, A., Valarezo, C., Wilcke, W. (2015): 17 years of biogeochemical data from a remote tropical montane forest in Ecuador: Tracing changes in the N cycle under environmental change. General Assembly of the European Geoscience Union, 12-17. April 2015, Wien.
Velescu, A., Camenzind, T., Herpich, L., Wilcke, W., Rillig, M.C. (2015): Do fungi need salt licks? Sodium shortage in tropical forests affects decomposition processes. Annual Conference of the Society for Tropical Ecology, 7.-10. April 2015, Zürich.
Camenzind, T., Hempel, S., Hertel, D., Homeier, J., Horn, S., Olsson, P.A., Velescu, A., Wilcke, W., Rillig, M.C. (2014): Nitrogen and phosphorus additions impact arbuscular mycorrhizal abundance and molecular diversity in a tropical montane forest in southern Ecuador. New Phytologist Symposium, 14.-16. Mai 2014, Zürich.
Velescu, A., Oelmann, Y., Wilcke, W. (2011): Ein 15N-Tracer-Experiment zur Aufklärung des Zusammenhangs zwischen Pflanzendiversität und Stickstoffumsatzraten in einem experimentellen Grünlandökosystem. Conference of the German Society of Soil Science, 3.-9. September 2011. Berlin and Potsdam.
Publications
Contributions in peer-reviewed journals
2021Dantas de Paula, M., Forrest, M., Langan, L., Bendix, J., Homeier, J., Velescu, A., Wilcke, W., Hickler, T. (2021): Nutrient cycling drives plant community trait assembly and ecosystem functioning in a tropical mountain biodiversity hotspot. New Phytologist 232(2), pp. 551–566.Velescu, A., Homeier, J., Bendix, J., Valarezo, C., Wilcke, W. (2021): Response of water-bound fluxes of potassium, calcium, magnesium and sodium to nutrient additions in an Ecuadorian tropical montane forest. Forest Ecology and Management 501, pp. 119661. 10.1016/j.foreco.2021.119661
2020Knoke, T., Paul, C., Rammig, A., Gosling, E., Hildebrand, P., Härtl, F., Peters, T., Richter, M., Diertl, K., Castro, L. M., Calvas, B., Ochoa, S., Valle-Carrión, L. A., Hamer, U., Tischer, A., Potthast, K., Windhorst, D., Homeier, J., Wilcke, W., Velescu, A., Gerique, A., Pohle, P., Adams, J., Breuer, L., Mosandl, R., Beck, E., Weber, M., Stimm, B., Silva, B., Verburg, P. H., Bendix, J. (2020): Accounting for multiple ecosystem services in a simulation of land‐use decisions: Does it reduce tropical deforestation? Global Change Biology 26(4), pp. 2403–2420. 10.1111/gcb.15003
Lama, S., Velescu, A., Leimer, S., Weigelt, A., Chen, H., Eisenhauer, N., Scheu, S., Oelmann, Y., Wilcke, W. (2020): Plant diversity influenced gross nitrogen mineralization, microbial ammonium consumption and gross inorganic N immobilization in a grassland experiment. Oecologia 193, pp. 731–748. 10.1007/s00442-020-04717-6
Wilcke, W., Velescu, A., Leimer, S., Blotevogel, S., Alvarez, P., Valarezo, C. (2020): Total organic carbon concentrations in ecosystem solutions of a remote tropical montane forest respond to global environmental change. Global Change Biology 26(12), pp. 6989–7005. 10.1111/gcb.15351
2019Bandowe, B. A. M., Leimer, S., Meusel, H., Velescu, A., Dassen, S., Eisenhauer, N., Hoffmann, T., Oelmann, Y., Wilcke, W. (2019): Plant diversity enhances the natural attenuation of polycyclic aromatic compounds (PAHs and oxygenated PAHs) in grassland soils. Soil Biology and Biochemistry 129, pp. 60–70. 10.1016/j.soilbio.2018.10.017
Wilcke, W., Velescu, A., Leimer, S., Bigalke, M., Boy, J., Valarezo, C. (2019): Temporal trends of phosphorus cycling in a tropical montane forest in Ecuador during 14 years. Journal of Geophysical Research: Biogeosciences 124, pp. 1329–1386. 10.1029/2018JG004942
2017Wilcke, W., Velescu, A., Leimer, S., Bigalke, M., Boy, J., Valarezo, C. (2017): Biological vs. geochemical control and environmental change drivers of the base metal budgets of a tropical montane forest in Ecuador during 15 years. Biogeochemistry 136, pp. 167–189. 10.1007/s10533-017-0386-x
2016Velescu, A., Valarezo, C., Wilcke, W. (2016): Response of dissolved carbon and nitrogen concentrations to moderate nutrient additions in a tropical montane forest of south Ecuador. Frontiers in Earth Science 4, pp. 58. 10.3389/feart.2016.00058
2014Camenzind, T., Hempel, S., Homeier, J., Horn, S., Velescu, A., Wilcke, W., Rillig, M. C. (2014): Nitrogen and phosphorus additions impact arbuscular mycorrhizal abundance and molecular diversity in a tropical montane forest. Global Change Biology 20, pp. 3646–3659. 10.1111/gcb.12618
2010Velescu, A., Meßmer, T., Scholten, T., Kühn, P. (2010): Removal of short-range order minerals prior to grain size analysis of volcanic ash soils. Journal of Plant Nutrition and Soil Science 173, pp. 799–804. 10.1002/jpln.201000111
Contributions in journals and series (not peer-reviewed)
2022Fabian, T., Velescu, A., Espinosa, C. I., Wilcke, W. (2022): Vertical distribution of the carbon isotope ratios in soils to predict nitrogen mineralization rates under forest and pasture along an elevational gradient in South Ecuador. Tabebuia Bulletin - DFG Research Unit 2730 9, pp. 11–13. 10.5678/9xq8-jy862020Fabian, T., Velescu, A., Hartleif, K., Wilcke, W. (2020): Soil properties of the cloud forest in Cajanuma and of the pastures along an elevation gradient from 1000 to 3000 m a.s.l. Tabebuia Bulletin - DFG Research Unit 2730 7, pp. 9. 10.5678/lcrs/for2730.cit.1817
Wilcke, W., Velescu, A. (2020): Response of soil nutrient supply in the tropical montane forest in South Ecuador to climate and landuse change along an elevation gradient from 1000 to 3000 m above sea level. Tabebuia Bulletin - DFG Research Unit 2730 8, pp. 13–15. 10.5678/lcrs/for2730.cit.1857
2019Fabian, T., Velescu, A., Wilcke, W. (2019): Soil development on heterogeneous parent material under tropical montane forest in South Ecuador. Tabebuia Bulletin - DFG Research Unit 2730 6, pp. 8. 10.5678/lcrs/for2730.cit.1736
2015Fabian, T., Velescu, A., Wilcke, W. (2015): Canopy Organisms Retain Sodium in the Tropical Montane Forest. Tabebuia Bulletin - DFG Research PAK 823-825 4, pp. 14f. 10.5678/lcrs/pak823-825.cit.1412
Velescu, A., Wilcke, W. (2015): Increased nitrogen and phosphorus availability stimulates the mineralization of dissolved organic matter in the tropical montane forest of South Ecuador. Tabebuia Bulletin - DFG Research PAK 823-825 3, pp. 12f. 10.5678/lcrs/pak823-825.cit.1399
2012Velescu, A., Valarezo, C., Wilcke, W. (2012): Response of the forest to elevated nitrogen deposition. TMF Newsletter of the DFG Research Unit 816 16, pp. 12. 10.5678/lcrs/for816.cit.1081
Book chapters
2020Wilcke, W., Velescu, A., Leimer, S., Valarezo, C. (2020): Water and Nutrient Budgets of Organic Layers and Mineral Topsoils Under Tropical Montane Forest in Ecuador in Response to 15 Years of Environmental Change. pp. 565–586. In: Levia, D. F., Carlyle-Moses, D. E., Iida, S., Michalzik, B., Nanko, K., Tischer, A. (ed.): Forest-Water Interactions. Ecological Studies 240, Springer, Cham. 10.1007/978-3-030-26086-6_232016Velescu, A., Wilcke, W. (2016): Rising Nitrogen Inputs to the Tropical Mountain Rain Forests. pp. 80–85. In: Bogner, F. X., Bendix, J., Beck, E. (ed.): Biodiversity Hotspot Tropical Mountain Rainforest. Naturaleza y Cultura Internacional, Loja, Ecuador.