Proceedings and Newsletters

  • Quichimbo, P., Jiménez, L., Tischer, A., Hamer, U. (2014): Forest site classification as basis for sustainable silviculture in southern Ecuador. In: Mosandl, R., Weber, M., Stimm, B., Hildebrandt, P., Knoke, T. (Hrsg.): Tropical ecosystems between protection and production. ISBN: 978-3-00-045147-8.
  • Beck, E., Roos, K., Bendix, J., Silva, B., Curatola, G., Voss, I., König, N., Scheibe, R., Potthast, K., Hamer, U., Gawlik, J. (2014): Bad weeds grow tall: a compilation of ten years research on the bracken (Pteridium spp.) problem in the tropical Andes of South Ecuador. In: Mosandl, R., Weber, M., Stimm, B., Hildebrandt, P., Knoke, T. (Hrsg.): Tropical ecosystems between protection and production. ISBN: 978-3-00-045147-8.
  • Tischer, A., Blagodatskaya, E., Hamer, U. (2013): Acid phosphatase as indicator for microbial phosphorus limitation. In: TMF-Newsletter No. 19 - DFG-Research Unit 816. DOI: 10.5678/lcrs/for816.cit.1233.   (www.tropicalmountainforest.org [en])
  • Hamer, U., Tischer, A.  (2012): Organic matter and microbial dynamics in pasture soils along management chronosequences. In: TMF-Newsletter No. 17 -       DFG-Research Unit 816. DOI: 10.5678/lcrs/for816.cit.1132.   (www.tropicalmountainforest.org [en])
  • Hamer, U. (2012): Soil quality assessment in the tropical mountain rainforest region of South Ecuador. In: Stahr, K., Fröhlich, H., Clemens, G., Schreinemachers, P. (eds.): Sustainable land use and rural development in mountain areas. Proceedings International Conference Hohenheim 16.-18.04.2012.
  • Bahr, E., Hamer, U., Makeschin, F. (2012): Sustainability assessment of land-use management by calculating nutrient balances at farm level in South Ecuador. In: Stahr, K., Fröhlich, H., Clemens, G., Schreinemachers, P. (eds.): Sustainable land use and rural development in mountain areas. Proceedings International Conference Hohenheim 16.-18.04.2012.
  • Beck, E., Roos, K., Hamer, U., Potthast, K., Tischer, A., Brenner, S., Bendix, J. (2012): Ecological aspects of repasturisation of abandoned mountain pastures in South Ecuador. In: Bräuning, A., Richter, M., Peters, T. (Hrsg.): Islands in land- and seascape: The challenges of fragmentation. Conference of the Society of Tropical Ecology. 22-25 February 2012, Erlangen. ISBN 978-3-00-037462-3.
  • Potthast, K., Hamer, U. (2011): Soil microbial structure and function disconnected. In: TMF-Newsletter No. 14 – DFG-Research Unit 816. DOI: 10.5678/lcrs/for816.cit.1031. (www.tropicalmountainforest.org [en])
  • Hamer, U. (2011): Land-use change: Consequences for soil microorganisms and soil functions. In: Keesstra, S., Mol, G. (eds.): Soil Science in a Changing World. Wageningen Conference on Applied Soil Science, 18.-22. September 2011. ISBN: 978-946173-168-5.
  • Tischer, A., Potthast, K., Hamer, U. (2011): Effekte von pflanzenbürtigem DOM und P-Düngung auf Nährstoffumsatzprozesse in Böden genutzter und verlassener Weiden Südecuadors. In: Böden verstehen – Böden nutzen – Böden fit machen, Berichte der DBG, September 2011, Berlin (online verfügbar).
  • Potthast, K., Hamer, U., Makeschin, F. (2011): Weidedüngung in einer ecuadorianischen Bergregenwaldregion – Möglichkeit der Degradationsminderung? In: Böden verstehen – Böden nutzen – Böden fit machen, Berichte der DBG, September 2011, Berlin (online verfügbar).
  • Hamer, U. (2011): From forests to pastures: molecular biomarkers as tracer for organic carbon sequestration in soils. In: TMF-Newsletter No. 13– DFG-Research Unit 816. DOI: 10.5678/lcrs/for816.cit.993. (www.tropicalmountainforest.org [en])
  • Potthast K., Hamer, U., Makeschin F. (2011): Land-use change and pasture-fertilization affects soil microorganisms and nutrient cycling in a tropical mountain rainforest region of Southern Ecuador. In: Chronakova, A., Simek, M., Kyselkova, M., Hynst, J., Baldrian, P., Pospisek, M., Kristufek, V., Elhottova, D. (Eds.): Ecology of Soil Microorganisms – Book of abstracts. Prague April 27 - May 1 2011, 384 pp.  
  • Tischer, A., Potthast K., Hamer, U., (2011): Effects of DOM on mineralization processes and microbial community structure in managed and abandoned pasture soils in Southern Ecuador. In: Chronakova, A., Simek, M., Kyselkova, M., Hynst, J., Baldrian, P., Pospisek, M., Kristufek, V., Elhottova, D. (Eds.): Ecology of Soil Microorganisms – Book of abstracts. Prague April 27 - May 1 2011, 384 pp.  
  • Hamer, U. (2011): Response of soil microorganisms to land-use change in different ecoregions. In: Chronakova, A., Simek, M., Kyselkova, M., Hynst, J., Baldrian, P., Pospisek, M., Kristufek, V., Elhottova, D. (Eds.): Ecology of Soil Microorganisms – Book of abstracts. Prague April 27 - May 1 2011, 384 pp.
  • Potthast, K., Hamer, U., Makeschin, F. (2011): Implications of land-use change and pasture-fertilization on soil microbial activities and communities in a mountain rainforest region of Southern Ecuador. In: Niekisch, M., Streit, B. (Hrsg.): Status and future of tropical biodiversity. Conference of the Society of Tropical Ecology. 21-24 February 2011, Frankfurt a.M. ISBN 978-3-89973-000-5.
  • Potthast, K., Hamer, U. (2011): From forests to pastures: Soil respiration & microbial biomass. In: TMF-Newsletter No. 11 – DFG-Research Unit 816. DOI: 10.5678/lcrs/for816.cit.1000. (www.tropicalmountainforest.org [en])
  • Hamer, U. (2010): Response of soil microorganisms to land-use change in China, Ecuador and Germany. Proceedings of the 19. International Congress on Soil Science, Brisbane 01.-06.08.2010.
  • Potthast, K., Hamer, U., Makeschin, F. (2010): Response of soil microbial activity and community structure to land use changes in a mountain rainforest region of Southern Ecuador. Geophysical Research Abstracts Vol. 12, EGU2010-11495.
  • Hamer, U., Potthast, K. (2009): Organic matter in soils: availability of N. In: TMF-Newsletter No. 7 – DFG-Research Unit 816. DOI: 10.5678/lcrs/for816.cit.1004. (www.tropicalmountainforest.org [en])
  • Potthast, K., Hamer, U. (2009): FERPAST: Bracken litter decomposes slowly. In: TMF-Newsletter No. 6 – DFG-Research Unit 816. DOI: 10.5678/lcrs/for816.cit.1005. (www.tropicalmountainforest.org [en])
  • Hamer, U., Potthast, K., Makeschin, F. (2009): Änderung der Struktur und Aktivität von Mikroorganismen in Weideböden Südecuadors nach Urea-Düngung. In: Böden – eine endliche Ressource, September 2009, Bonn.
  • Potthast, K., Hamer, U., Makeschin, F. (2009): Einfluss der Streuqualität auf Mineralisierungsprozesse in Oberböden Südecuadors. In: Böden – eine endliche Ressource, September 2009, Bonn.
  • Hamer, U., Potthast, K., Makeschin, F. (2009): Land-use induced dynamics of C, N and P in mountain soils of South Ecuador. Geophysical Research Abstracts, Vol. 11, EGU2009-1976.
  • Wutzler, T., Reichstein, M., Hamer, U. (2008): Colimitation of decomposition by substrate and decomposers – challenging models by incubation experiments. Geophysical Research Abstracts, Vol. 10, EGU2008-A-03953.
  • Hamer, U., Makeschin, F. (2008): Organische Substanz und Struktur der mikrobiellen Gemeinschaft in intensiv bearbeiteten und stillgelegten landwirtschaftlichen Böden in Sachsen. Mitteilungen der Deutschen Bodenkundlichen Gesellschaft (online available: www.dbges.de).
  • Ohm, H., Hamer, U., Marschner, B. (2005): Priming Effekte in Korngrößenfraktionen im Bhs-Horizont eines Podsols nach Zugabe von Fructose und Alanin. Mitteilungen der Deutschen Bodenkundlichen Gesellschaft 107(1): 173-174.
  • Hamer, U. (2004): Priming effects of dissolved organic substrates on the mineralisation of lignin, peat, soil organic matter and black carbon determined with 14C and 13C isotope techniques. Thesis, Ruhr-Universität Bochum.
  • Hamer, U., Marschner, B., Brodowski, S., Amelung, W. (2003): Priming-Effekte beim Abbau von pyrogenem Kohlenstoff durch Glucose. Mitteilungen der Deutschen Bodenkundlichen Gesellschaft 102 (1): 175-176.
  • Hamer, U., Marschner, B. (2002): Effects of water-soluble organic substances on the stabilization and mineralisation of lignin and peat. Proceedings of the 17. International Congress on Soil Science, Bangkok 5.-17.8.2002.
  • Hamer, U., Marschner, B. (2001): Priming-Effekte wasserlöslicher organischer Substanzen auf die Stabilisierung und den Abbau organischer Modellsubstanzen. Mitteilungen der Deutschen Bodenkundlichen Gesellschaft 96: 195-196.