Artikel - peer review (ISI)


43. Freitag, M.; Klaus, V.H.; Bolliger, R.; Hamer, U.; Kleinebecker, T.; Prati, D.; Schäfer, D.; & Hölzel, N. (2021): Restoration of plant diversity in permanent grassland by seeding: assessing the limiting factors along land-use gradients. Journal of Applied Ecology, doi: 10.1111/1365-2664.13883 [en]

42. Hamer, U.; Meyer, M.U.T.; Meyer, U.-N.; Radermacher, A.; Götze, P.; Koch, H.-J.; & Scherber, C. (2021): Soil microbial biomass and enzyme kinetics for the assessment of temporal diversification in agroecosystems. Basic and Applied Ecology. doi: 10.1016/j.baae.2021.03.014 [en]


41. Poniatowski, D., Stuhldreher, G., Helbing, F., Hamer, U., & Fartmann, T. (2020): Restoration of calcareous grasslands: The early successional stage promotes biodiversity. Ecological Engineering, 151, 105858. DOI: 10.1016/j.ecoleng.2020.105858.

40. Klaus, V. H., Friedritz, L., Hamer, U., Kleinebecker, T. (2020): Drought boosts risk of nitrate leaching from grassland fertilisation. DOI: 10.1016/j.scitotenv.2020.137877.

39. Knoke T., Paul, C., Rammig, A., Gosling, E., Hildebrandt, P., Härtl, F., Peters, T., Richter, M., Diertl, K.-H., 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 DOI: 10.1111/GCB.15003.

38. Muskus, A. M., Krauss, M., Miltner, A., Hamer, U., Nowak, K. M. (2020): Degradation of glyphosate in a Colombian soil is influenced by temperature, total organic carbon and pH. Environmental Pollution 259: 113767. DOI: 10.1016/j.envpol.2019.113767


37.    Quichimbo, P., Jiménez, L., Veintimilla, D., Potthast, K., Tischer, A., Günter, S., Mosandl, R., Hamer, U. (2019): Nutrient dynamics in an Andean forest region: a case study of exotic and native species plantations in southern Ecuador. New Forests. DOI: 10.1007/s11056-019-09734-9.

36.    Tischer, A., Sehl, L., Meyer, U. N., Kleinebecker, T., Klaus, V. Hamer, U. (2019): Land-use intensity shapes kinetics of extracellular enzymes in rhizosphere soil of agricultural grassland plant species. Plant and Soil 437:215-239, doi: 10.1007/s11104-019-03970-w

35.    Schäfer, D., Klaus V. H., Kleinebecker, T., Boeddinghaus, R. S., Hinderling, J., Kandeler, E., Marhan, S., Nowak, S., Sonnemann, I., Wurst, S., Fischer, M., Hölzel, N., Hamer, U., Prati. D. (2019): Recovery of ecosystem functions after experimental disturbance in 73 grasslands differing in land-use intensity, plant species richness and community composition. Journal of Ecology. DOI: 10.1111/1365-2745.13211

34.     Muskus, A. M., Krauss, M., Miltner, A., Hamer, U., Nowak, K. M. (2019): Effect of temperature, pH and total organic carbon variations on microbial turnover of 13C315N-glyphosate in agricultural soil. Science of the Total Environment 658: 697-707. DOI: 10.1016/j.scitotenv.2018.12.195


33.     Djukic, I., Kepfer-Rojas, S., Kappel Schmidt, I., Steenberg Larsen, K., Beier, C., Berg, B., Verheyen, K., TeaComposition (among others Hamer, U., Hoelzel, N., Klaus, V., Kleinebecker, T.) (2018): Early stage litter decomposition across biomes. Science of The Total Environment 628-629: 1369-1394. DOI: 10.1016/j.scitotenv.2018.01.012.

32.     Klaus, V. H.; Kleinebecker, T.; Busch, V.; Fischer, M.; Hölzel, N.; Nowak, S.; Prati, D.; Schäfer, D.; Schöning, I.; Schrumpf, M.; Hamer, U. (2018): Land use intensity, rather than plant species richness, affects the leaching risk of multiple nutrients from permanent grasslands. Global Change Biology. doi: 10.11111/gcb.14123.

31.     Klaus, V. H.; Schäfer, D.; Prati, D.; Busch, V.;  Hamer, U.; Hoever, C. J.; Kleinebecker, T.; Mertens, D.; Fischer, M.; Hölzel, N. (2018): Effects of mowing, grazing and fertilization on soil seed banks in temperate grasslands in Central Europe. Agriculture, Ecosystems and Environment 256: 211-217. doi: 10.1016/j.agee.2017.11.008.

30. Kleinebecker, T., Busch, V., Hölzel, N., Hamer, U., Schäfer, D., Prati, D., Fischer, M., Hemp, A., Lauterbach, R., Klaus, V. H. (2018): And the winner is ….! A test of simple predictors of plant species richness in agricultural grasslands. Ecological Indicators 87: 296-301. doi: 10.1016/j.ecolind.2017.12.031.


29. Quichimbo, P., Jiménez, L., Veintimilla, D., Tischer, A., Günter, S., Mosandl, R., Hamer, U. (2017): Forest Site Classification in the Southern Andean Region of Ecuador: A Case Study of Pine Plantations to Collect a Base of Soil Attributes. Forests 8, 473. doi: 10.3390/f8120473

28. Klaus, V. H.; Hoever, C. J.; Fischer, M.; Hamer, U.; Kleinebecker, T.; Mertens, D.; Schäfer, D.; Prati, D.; Hölzel, N. (2017): Contribution of the soil seed bank to the restoration of temperate grasslands by mechanical sward disturbance. Restoration Ecology. doi: 10.1111/rec.12626


27. Knoke, T., Paul, C., Hildebrandt, P., Calvas, B. Castro. L. M., Härtl, F., Döllerer, M., Hamer, U., Windhorst, D., Wiersma, Y. F., Curatola Fernandez, G. F., Obermeier, W. A., Adams, J., Breuer, L., Mosandl, R., Beck, E., Weber, M., Stimm, B., Haber, W., Fürst, C., Bendix, J. (2016): Compositional diversity of rehabilitated tropical lands supports multiple ecosystem services and buffers uncertainties. Nature communications 7, 11877. DOI: 10.1038/ncomms11877.
26. Graham, E.B., Knelman, J.E., Schindlbacher, A., Siciliano, S., Breulmann, M., Yannarell, A., Beman, J.M., Abell, G., Philippot, L., Prosser, J., Foulquier, A., Yuste, J.C., Glanville, H.C., Jones, D., Angel, R., Salminen, J., Newton, R.J., Bürgmann, H., Ingram, L.J., Hamer, U., Siljanen, H.M., Peltoniemi, K., Potthast, K., Bañeras, L., Hartmann, M., Banerjee, S., Yu, R.-Q., Nogaro, G., Richter, A., Koranda, M., Castle, S., Goberna, M., Song, B., Chatterjee, A., Nunes, O.C., Lopes, A.R., Cao, Y., Kaisermann, A., Hallin, S., Strickland, M.S., Garcia-Pausas, J., Barba, J., Kang, H., Isobe, K., Papaspyrou, S., Pastorelli, R., Lagomarsino, A., Lindström, E., Basiliko, N., Nemergut, D.R. (2016): Microbes as engines of ecosystem function: when does community structure enhance predictions of ecosystem processes? Frontiers in Microbiology 7. DOI: 10.3389/fmicb.2016.00214


25. Tischer, A., Blagodatskaya, E., Hamer, U. (2015): Microbial community structure and resource availability drive the catalytic efficiency of soil enzymes under land-use change conditions. Soil Biology & Biochemistry 89, 226-237.
24. Passauer, L., Hallas, T., Bäucker, E., Ciesielski, G., Lebioada, S., Hamer, U. (2015): Biodegradation of hydrogels from oxyethylated lignins in model soils. ACS Sustainable Chemistry & Engineering. Doi:  10.1021/acssuschemeng.5b00139
. Tischer, A., Werisch, M., Döbbelin, F., Camenzind, T., Rillig, M.C., Potthast, K., Hamer, U. (2015): Above- and belowground linkages of a nitrogen and phosphorus co-limited tropical mountain pasture system - responses to nutrient enrichment. Plant Soil. Doi 10.1007/s11104-015-2431-7


22. Knoke, T., Bendix, J., Pohle, P., Hamer, U., Hildebrandt, P., Roos, K., Gerique, A., Sandoval, M.L., Breuer, L., Tischer, A., Silva, B., Calvas, B., Aguirre, N., Castro, L.M., Windhorst, D., Weber, M., Stimm, B., Gunter, S., Palomeque, X., Mora, J., Mosandl, R., Beck, E., (2014): Afforestation or intense pasturing improve the ecological and economic value of abandoned tropical farmlands. Nature communications 5, 5612-5612. Doi:10.1038/ncomms6612
.Tischer, A., Potthast, K., Hamer, U. (2014): Land-use and soil depth affect re-source and microbial stoichiometry in a tropical mountain rainforest region of southern Ecuador. Oecologia. Doi: 10.1007/s00442-014-2894-x.
Tischer, A., Blagodatskaya, E., Hamer, U. (2014): Extracellular enzyme activities in a tropical mountain rainforest region of southern Ecuador affected by low soil P status and land-use change. Appl. Soil Ecol. 74: 1-11.


19.    Bahr, E., Hamer, U., Chamba Zaragocin, D., Makeschin, F. (2013): Different fertilizer types affected nitrogen and carbon cycling in eroded and colluvial soils of Southern Ecuador. Agricultural Sci. 4: 19-32.
18.    Pullemann, M., Creamer, R., Hamer, U., Helder, H., Pelosi, C., Peres, G., Rutgers, M. (2012): Soil biodiversity assessment, biological indicators and soil ecosystem services – an overview of European approaches. Curr. Opin. Environ. Sustainability 4: 529-538.    
17.    Potthast, K., Hamer, U., Makeschin, F. (2012): In Ecuadorian pasture soils the growth of Setaria sphacelata, but not of soil microorganisms, is co-limited by N and P. Appl. Soil Ecol. 62: 103-114.    
16.    Hamer, U., Potthast, K., Burneo, J.I., Makeschin, F. (2013): Nutrient stocks and phosphorus fractions in mountain soils of Southern Ecuador after conversion of forest to pasture. Biogeochem. DOI: 10.1007/s10533-012-9742-z.    

2012- 2002

15.    Hamer, U., Rumpel, C., Dignac, M.F. (2012): Cutin and suberin biomarkers as tracer for the turnover of shoot and root derived organic matter along a chronosequence of Ecuadorian pasture soils. Eur. J. Soil Sci.
DOI: 10.1111/j.1365-2389.2012.01476.x.    
14.    Potthast, K., Hamer, U., Makeschin, F. (2011): Land-use change in a tropical mountain rainforest region of Southern Ecuador affects soil microorganisms and nutrient cycling. Biogeochem. DOI: 10.1007/s10533-011-9626-7
13.    Potthast, K., Hamer, U., Makeschin, F. (2010): Impact of litter quality on mineralization processes in managed and abandoned pasture soils in Southern Ecuador. Soil Biol. Biochem. 42: 56-64.
12.    Hamer, U., Potthast, K., Makeschin, F. (2009): Urea fertilisation affected soil organic matter dynamics and microbial community structure in pasture soils of Southern Ecuador. Appl. Soil Ecol. 43: 226-233.
11.    Hamer, U., Makeschin, F. (2009): Rhizosphere soil microbial community structure and microbial activity in set-aside and intensively managed arable land. Plant Soil 316: 57-69.   
10.    Hamer, U. Makeschin, F., An, S., Zheng, F. (2009): Microbial activity and community structure in degraded soils on the Loess Plateau of China. J. Plant Nutr. Soil Sci. 172: 118-126.    
9.    Hamer, U., Makeschin, F., Stadler, J., Klotz, S. (2008): Soil organic matter and microbial community structure in set-aside and intensively managed arable soils in NE-Saxony, Germany. Appl. Soil Ecol. 40: 465-475.                
8.    An, S., Zheng, F., Zhang, F., van Pelt, R. S., Hamer, U., Makeschin, F. (2008): Soil quality degradation processes along a deforestation chronosequence in the Ziwuling Area, China. Catena 75: 248-256.      
7.    Marschner, B., Brodowski, S., Dreves, A., Gleixner, G., Grootes, P., Hamer, U. Heim, A., Jandl, G., Ji, R., Kaiser, K., Kalbitz, K., Kramer, Ch., Leinweber, P., Rethemeyer, J., Schmidt, M. W. I., Schwark, L., Wiesenberg G. L. B. (2008): How relevant is recalcitrance for the stabilization of organic matter in soils? J. Plant Nutr. Soil Sci. 171: 91-110.
6.    Hamer, U., Unger, M., Makeschin, F. (2007): Impact of air-drying and rewetting on PLFA profiles of soil microbial communities. J. Plant Nutr. Soil Sci. 170: 259-264.    
5.    Ohm, H., Hamer, U., Marschner, B. (2007): Priming effects in soil size fractions of a Podzol Bs horizon after addition of fructose and alanine. J. Plant Nutr. Soil Sci. 170: 551-559.
4.    Hamer, U., Marschner, B. (2005): Priming effects in soils after combined and repeated substrate additions. Geoderma 128: 38-51.    
3.    Hamer, U., Marschner, B. (2005): Priming effects in different soil types after fructose, alanine, oxalic acid and catechol additions. Soil Biol. Biochem. 37: 445-454.   
2.    Hamer, U., Marschner, B.; Brodowski, S.; Amelung, W. (2004): Interactive priming of black carbon and glucose mineralisation. Org. Geochem. 35: 823-830.
1.    Hamer, U., Marschner, B. (2002): Priming effects of sugars, amino acids, organic acids and catechol on the mineralization of lignin and peat. J.Plant Nutr. Soil Sci. 165: 261-268.