Dr. THOMAS GAISER

University of Bonn

Institute of Crop Science and Resource Conservation

Katzenburgweg 5

53115 Bonn (Germany)

Tel. +49-228-732050

E-Mail: tgaiser@uni-bonn.de

 

Thomas Gaiser

 

 

 

 

 

Education

1988

 

1993

M.Sc. in Agronomy at the University of Hohenheim with emphasis on crop production. Master thesis on agro-forestry systems

Ph.D. in Soil Science at the University of Hohenheim. Thesis title: "Significance of soil organic matter for soil productivity in tropical soils"

 

 

Professional Career

1989-1991

Research Fellow

International Institute for Tropical Agriculture (IITA), Substation Benin, West Africa: Establishment and supervision of soil laboratory, soil and plant analysis

1991-1992

Research Fellow

University of Hohenheim, Institute of Soil Science, Germany

1993-2001

Post-Doc Scientist

University of Hohenheim, Institute of Soil Science. Research topics in Africa and Latin America: Adapted farming systems in West Africa, water and nutrient cycles in tropical agro-ecosystems, regional scale modelling of water resources and agricultural production, land resources information systems.

2002-2007

Assistant Professor

University of Hohenheim. Teaching and project coordination of the EU Project RIVERTWIN (www.rivertwin.de) in Benin (West Africa)

Since 2007

Senior Scientist

University of Bonn, Institute of Crop Science and Resources Conservation, Research group Cropping System Models

 

 

Research projects

 

 

Ongoing projects

 

 

 

Funded by

Title

 

2013-

BMBF

Improving food security in Africa through increased system productivity of biomass-based value webs (BiomassWeb)

 

2012-

EU

MACSUR- Modelling European Agriculture with

Climate Change for Food Security

 

2010-

DFG

Crop sequence and nutrient acquisition from subsoils (FOR1320) more...

 

2010-

BMBF

West African Science Service Center on Climate and Adapted Land Use (WASCAL) more ...

 

2009-

DAAD

Finish-German project related exchange of scientists (FINGER) more…

 

 

Past Projects

 

 

Funded by

Title

 

2009-2012

IPSWAT

Integrated Water Management in the Agricultural Sector in Ktoua Oasis, Draâ Basin, South Morocco more…

 

2009-2010

MUNLV NRW

Climate change effects on crop production in the state of North-Rhine-Westfalia

 

2008-2010

BWPLUS

Assessment of production potentials für energy crops in the state of Baden-Württemberg

 

2007-2011

BMBF

IMPETUS – An integrated approach to the efficient management of scarce  water resources in West Africa (www.impetus.uni-koeln.de)

 

2007 -2010

EU

Biosaline Agroforestry

 

2006-2009

DFG

Sustainable land use and rural development in mountain regions of SE Asia (SFB 564)

 

2006-2008

Sino-German Center Peking/ DFG

Sino-German Cooperation Group of Paleontology and Geosciences

 

2005-2008

BMBF

Developing an integrated management concept for flood retention areas (RIMAX)

 

2005-2007

DFG

Modeling Material Flows and Production Systems for Sustainable Resource Use in an Intensified Crop Production in the North China Plain

 

2005-2006

Ministry of Environment BW

CO2 emissions from cropland in the state of Baden-Württemberg

 

2004-2006

EU

A regional model for integrated water management in twinned river basins (www.rivertwin.de)

 

2002-2006

MLR BW

Ecological farming in ground water protection areas

 

2002-2005

BMBF

Climate change and external drivers in a complex climate model

 

1999-2003

BMBF

Environmentally compatible and sustainable agricultural production in the North China Plain

 

1994-2001

BMBF

Water availability and vulnerability of ecosystems and societies in NE Brazil

 

1989-1999

DFG

Adapted land use in West Africa (SFB 308)






 

 

 

Professional Achievements

 

Management

·         3 years coordinator of the European Research Project RIVERTWIN (Regional modeling for integrated river basin management in Africa and Central Asia)

·         7 years coordinator of the German-Brazilian interdisciplinary research project on "Water Availability and Vulnerability of Ecosystems and Society in the Northeast of Brazil"

·         Coordinating lectures, field trips and laboratory exercises in Soil Science for students of Agriculture (ca. 140 per year) and Agro-Biology (ca. 80 per year)

 

Teaching

·         University of Hohenheim: Water and Soil as Resources, Tropical Soils and Land Evaluation, Spatial Data Analysis and GIS, Field Exercise in Soil Science, International Excursion on Soils and Land Evaluation in South-West Germany

·         University of Tuebingen: Master Course Tropical Hydrology, Introduction into Soil Science at the Centre for Applied Geosciences (ZAG)

·         University of Stuttgart: Introduction into Soil Science

·         Universidade Federal do Ceara: Modeling Agro-Ecosystems

·         Co-supervisor of several Master and Ph.D. theses

·         University of Bonn: Climate Change and Agriculture, Modeling Agro-Ecosystems

 

Research

·         Integrated modeling of interactions between land use and water resources at the basin scale

·         Non-point pollution of surface and ground waters from agricultural activities

·         Modeling water and wind erosion

·         Usage of soil information for up-scaling of agro-ecosystem models in Sub-Saharan Africa, Europe, South America and Central Asia

·         Organic matter, nitrogen turnover and carbon fluxes at different scales

 

 

Reviewing

 

·         Member of the Editorial Board of the international journal “Field Crops Research”

·      Reviewer in various scientific journals (Plant and Soil, Field Crops Research, Agricultural and Forest Meteorology, Computers and Electronics in Agriculture, Journal of Plant Nutrition and Soil Science, Environmental Management, Catena, Journal of Hydrolgy, Transactions of the American Society of Agric. and Biol. Engineers, Atmosphere, Journal of Atmospheric Sciences)

  • Evaluator of the European Commmission within FP6

 

 

 

Publications

 

Papers in peer-reviewed journals. 12

Books and book chapters. 14

Contributions to conferences. 15

 

Papers in peer-reviewed journals

1.      Worou O. N. , Gaiser, T., Kazuki, S., Goldbach H., Ewert, F. (2013): Spatio-temporal dynamics of constraints on rainfed rice yield and growth in West African inland valleys. Agr. Water Manage. (accepted)

2.      Worou O. N. , Gaiser, T., Kazuki, S., Goldbach H., Ewert, F. (2013): Simulation of soil water dynamics and rice crop growth as affected by bunding and fertilizer application in inland valley systems of West Africa. Agric. Ecosyst. Environ. (accepted).

3.      Gaiser, T. Perkons, U., Küpper, P.M., Kautz, T., Uteau-Puschmann, D., Ewert, F., Enders, A., Krauss, G. (2013): Modeling biopore effects on root growth and biomass production on soils with pronounced sub-soil clay accumulation. Ecol. Model. 256:6-15.

4.      Dagbenonbakin, G., Srivastava, A., Gaiser, T., Goldbach, H. (2013): Maize nutrient assessment in Benin Republic: Case of Upper Ouémé Catchment. J. Plant Nutr. 36: 587-606. 

5.      Igué, A.M., Houndagba, C.J., Gaiser, T., Stahr, K. (2012): Accuracy of the Land Use/Cover classification in the Oueme Basin of Benin (West Africa). Int. J. Agr. Sci. 2:174-184.

6.      Kautz, T. Amelung, W., Ewert, F., Gaiser, T., Horn, R., Jahn, R., Javaux, M., Kemna, A., Kuzyakov, Y., Munch, J.-C., Pätzold, S., Peth, S., Scherer, H.W., Schloter, M., Schneider, H., Vanderborght, J., Vetterlein, D., Walter, A., Wiesenberg, G., Köpke, U. (2012): Nutrient acquisition from the arable subsoil in temperate climates: a review. Soil Biol. Biochem. http://dx.doi.org/10.1016/j.soilbio.2012.09.014.

7.      Srivastava, A., Gaiser , T., Ewert, F. (2012): The impact of climate change on Yam (Dioscorea spp.) yield in relation to major soil types in the Upper Ouémé Basin (West Africa). Agric. Ecosyst. Environ. 153:57-64

8.      Gaiser, T., Stahr, K., Bernard, M., Kang, B.T. (2012): Changes in soil organic matter fractions in a tropical Acrisol as influenced by the addition of different residue materials. Agroforestry Systems 86:185-195.

9.      Gaiser, T., Perkons, U., Puschmann, D. U., Küppers, P.M., Kautz, T., Peth, S., Pfeifer, J., Ewert, F., Horn R., Köpke, U. (2012): Evidence of improved water uptake from subsoil by spring wheat following Lucerne. Field Crops Research 126:56-62. http://dx.doi.org/10.1016/j.fcr.2011.09.019

10.  Srivastava, A., Gaiser , T., Ewert, F., Cornet, D. (2012): Estimation of effective fallow availability for the prediction of yam productivity at the regional scale using multiple scenario analysis. Field Crops Research 131:32-39.

11.  Folbert, C., Gaiser, T., Abbaspour, K.C., Schulin, R., Yang, H. (2012): Regionalization of a large-scale crop growth model for sub-Saharan Africa: model setup, evaluation, and estimation of maize yields. Agric. Ecosyst. Environ. 151:21-33.

12.  Bossa, A.Y, Diekkrüger, B., Igué, A.M, Gaiser, T. (2012): Analyzing the effects of different soil databases on modeling of hydrological processes and sediment yield in Benin (West Africa). Geoderma 174:61-74; http://dx.doi.org/10.1016/j.geoderma.2012.01.012

13.  Dagbenonbakin, G., Srivastava, A., Gaiser, T., Goldbach, H. (2012): Diagnosis and Recommendation Integrated system: A tool for detecting nutrient deficiencies in Yam (Dioscorea rotundata). J. Plant Nutr. 35(14):2124-2134.  DOI:10.1080/01904167.2012.724492

14.  Gaiser, T., Judex, M., Igue, A.M., Paeth, H., Hiepe, C. (2011): Future productivity of fallow systems in Sub-Saharan Africa: Is the effect of demographic pressure and fallow reduction more significant than climate change? Agricultural and Forest Meteorology 151:1120-1130 (DOI: 10.1016/j.agrformet.2011.03.015).

15.  Hounsou, M., Ahamidé, B., Agbossou K. E., Gaiser T. (2011) : Evaluation of water quality in the Ouémé river (Bénin). Environmentalist, 31:407-415. DOI : 10.1007/s10669-011-9356-3.

16.  Wicke, B., Smeets, E., Dornburg, V., Vashev, B., Gaiser, T., Turkenburg, W, Faaij, A. (2011): The global technical and economic potential of bioenergy from salt-affected soils. Energy and Environmental Science 4: 2669-2681. DOI:10.1039/C1EE01029H

17.  Srivastava, A., Gaiser , T. (2010): Simulating biomass accumulation and yield of yam (Dioscorea alata) in the Upper Ouémé Basin (Benin Republic) – I. Compilation of physiological parameters and calibration at the field scale. Field Crops Research 116:23-29. http://dx.doi.org/10.1016/j.fcr.2009.10.018

18.  Gaiser, T., Hiepe, C., Judex, M., Kuhn, A. (2010): Regional simulation of maize production in tropical savanna fallow systems as affected by fallow availability Agric. Syst., 103:656-665. doi:10.1016/j.agsy.2010.08.004

19.  Kuhn, A., Gaiser, T., Gandonou, E. (2010): Simulating the Effects of Tax Exemptions on Fertiliser Use in Benin by Linking Biophysical and Economic Models. Agric. Syst. 103:509-520.

20.  Igue, A.M., Houndagba, C. J., Gaiser, T., Worou, R., Mensah, G.A., Stahr, K. (2010): Aspects de la dynamique de l’occupation du sol et du projet d’aménagement participatif de la forêt classée de Toui-Kilibo au Bénin. Rev. Sc. Env. Univ. Lomé 6:113-134.

21.  Srivastava, A., Dagbenonbakin, G., Gaiser, T. (2010): Effect of fertilization on Yam (Dioscorea rotundata) biomass production. J. Plant Nutr. 33: 1056-1065.

22.  Gaiser, T., De Barros, I., Sereke, F., Lange, F.-M. (2010): Validation and reliability of the EPIC model to simulate maize production in small-holder farming systems in tropical sub-humid West Africa and semi-arid Brazil. Agric. Ecosyst. Environ 135:318-327. doi:10.1016/j.agee.2009.10.014

23.  Billen, N., Röder, C., Gaiser, T., Stahr, K. (2009): Carbon sequestration in soils of SW-Germany as affected by agricultural management – Validation of the EPIC model. Ecol. Model. 220:71-80. http://dx.doi.org/10.1016/j.ecolmodel.2008.08.015

24.  Gaiser, T., Abdel-Razek, M., Bakara, H. (2009): Modeling carbon sequestration under zero tillage at the regional scale. II. The effect of crop rotation and soil type. Ecol. Model. 220:3372-2279. http://dx.doi.org/10.1016/j.ecolmodel.2009.08.001

25.  Srivastava, A., Kaninnkpo, C., Gaiser, T. (2009): Response of lowland rice to bunding and fertilization at different slope positions. Agric. J. 4:226-230. http://dx.doi.org/10.3923/aj.2009.226.230

26.  Barthel, R., Sonneveld, B.G.J.S. , Götzinger, J., Keyzer, M.A., Pande, S., Printz, A., Gaiser, T. (2009): Integrated Assessment of Groundwater Resources in the Ouémé Basin, Benin, West Africa. Physics and Chemistry of the Earth 34:236-250. http://dx.doi.org/10.1016/j.pce.2008.04.001

27.  Barthel, R., Jagelke, J., Götzinger, J. , Gaiser, T. , Printz, A. (2008): Aspects of choosing appropriate concepts for modelling groundwater resources in regional integrated water resources management: Examples from the Neckar (Germany) and Oueme catchment (Benin). Physics and Chemistry of the Earth 33:92-114.

28.  Srivastava, A., Gaiser, T. (2008): Biomass Production and Partitioning pattern of Yam (Dioscorea rotundata). Agric. J.  3:334-337.

29.  Gaiser, T., Abdel-Razek, M., Billen, N., Stahr, K. (2008): Modeling carbon sequestration under zero tillage at the regional scale. I. The effect of soil erosion. Ecol. Model. 218:110-120. http://dx.doi.org/10.1016/j.ecolmodel.2008.06.025

30.  Gaiser, T., A. Printz, H.G. Schwarz von Raumer, J. Götzinger, V.A. Dukhovny, R. Barthel, A. Sorokin, A. Tuchin, C. Kiourtsidis, I. Ganoulis, K. Stahr (2008): Development of a regional model for integrated management of water resources at the basin scale. Physics and Chemistry of the Earth 33:175-182, http://dx.doi.org/10.1016/ j.pce.2007.04.018

31.  De Barros, I., Gaiser, T., Lange, F.-M., Römheld, V. (2007): Mineral nutrition and water use patterns of a maize/cowpea intercrop on a highly acidic soil of the tropic semi-arid. Field Crops Research 101:26-36

32.  Maurer, T., Herrmann, L., Gaiser, T., Mounkaila, M., Stahr, K. (2006):  A mobile wind tunnel for wind erosion field measurements. J. Arid. Env. 66:257-271.

33.  Erkossa, T., Stahr, K., Gaiser, T. (2006): Soil tillage and crop productivity on a Vertisol in Ethiopian highlands. Soil Till. Res. 85:200-211.

34.  Nuga, B.O., Akinbola, G.E.,  Olanrewaju, L., Gaiser, T., and Herrmann, L. (2006): Production of the 1:350 000 scale digital geologic map of the old Imo State. Nigeria.  The Electronic  Journal of Environment, Agricultural and Food Chemistry 5:1654-1658.

35.  Lawal, O., Gaiser, T., Nuga, B. (2006): Estimation of potential soil losses on a regional scale: a case study of Abomey-Bohicon Region, Benin Republic. Agricultural Journal 2(1):1-8.

36.  Erkossa, T., Stahr, K., Gaiser, T. (2005): Effect of different methods of land preparation on runoff, soil and nutrient losses from a Vertisol in the Ethiopian highlands. Soil Use and Management 21:253-259.

37.  Igué, A.M., Gaiser,T., Stahr K. (2004): A Soil and Terrain digital database (SOTER) for improved land use planning in Central Benin. Europ. J. Agron. 21(1):41-52.

38.  Igué, A.M., Gaiser,T., Stahr, K. (2004): Landscape related variability of physical and chemical soil characteristics in the Moist Savanna of Benin. Die Erde 4:220-232.

39.  Gaiser, T., de Barros, I., Lange, F.-M., Williams, J.R. (2004): Water use efficiency of a maize/cowpea intercrop on highly acidic tropical soils as affected by liming and fertilizer application. Plant Soil 263:165-171.

40.  De Barros, I., Williams, J.R., Gaiser, T. (2004): Modelling soil nutrient limitations to crop production in semiarid NE of Brazil with a modified EPIC Version. I – Changes in the source code of the model. Ecological Modeling 178:441-456.

41.  De Barros, I., Williams, J.R., Gaiser, T. (2004): Modelling soil nutrient limitations to crop production in semiarid NE of Brazil with a modified EPIC Version. II – Field test of the model. Ecological Modeling 181:567-580.

42.  Erkossa, T., Stahr, K., Gaiser, T. (2004): Participatory soil quality assessment: The case of smallholder farmers in Ethiopian highlands. Australian Journal of Soil Research, 42:1-5.

43.  Halm, D., Gaiser, T., Stahr, K. (2002): Seepage and groundwater recharge in sandy soils of the semiarid Northeast of Brazil. N. JB. Geol. Paläont. 225(1):85-101.

44.  Gaiser, T., Graef, F. (2001): Optimisation of a parametric land evaluation method for cowpea and pearl millet production in semiarid regions. Agronomie 21(8):705-712.

45.  De Barros, I., Gaiser, T., Römheld, V. (2001): Validation of the EPIC model for nitrogen and phosphorus uptake by intercropped maize and cowpea on a Alumi-Haplic Acrisol. In: Horst, W.J. et al., Plant nutrition - Food security and sustainability of agroecosystems. Developments in Plant and Soil Sciences. 92:948-949.

46.  Graef, F., Gaiser, T., Herrmann, L., Frick, T. (2001): Improved targeting of soil and water conservation measures with the SOTER database in Niger. The Land 5(3):213-224.

47.  Gaiser, T., Graef, F., Cordeiro, J.C. (2000): Water retention characteristics of sandy soils with contrasting clay mineral composition in semi-arid tropical regions. Australian Journal of Soil Research 38:523-536.

48.  Halm, D., Gaiser, Th., Stahr, K. (1999): Does magnetite influence TDR measurements? (in German). Z. Pflanzenernähr. Bodenk. 162(6):661-666.

49.  Gaiser, T., Bernard, M., Stahr, K., Kang, B.T. (1998): Nitrogen mineralization and nitrogen uptake by maize as influenced by light and heavy organic matter fractions. Z. Pflanzenernähr. Bodenkd. 161(5):555-561.

50.  Gaiser, T., Bernard, M., Stahr, K. (1994): Nitrogen and carbon mineralization in cultivated Acrisols and Vertisols in a subhumid tropical climate. Z. Pflanzenernähr. Bodenk. 157:375-381.

51. Stahr, K., Rück, F., Gaiser, T. (1994): Soil Nitrogen - Reserves and  mineralization as affected by climate, soil and landuse. Nova Acta Leopoldina NF 70, Nr. 288, 213-235.

 

 

Books and book chapters

Edited books

1.      Gaiser, T., Araújo, J.C., Frischkorn, H., Krol, M. (2003): Global Change and Regional Impacts: Water Availability and Vulnerability of Ecosystems and Society in Semi-Arid Northeast of Brazil. Springer Verlag, Heidelberg, 2003. 428 p.

2.      Gaiser, T. (1993): Bedeutung der organischen Bodensubstanz für Eigenschaften und Ertragfähigkeit von Vertisolen und Acrisolen in Süd-Benin (Significance of soil organic matter for properties and productivity of Vertisols and Acrisols in Southern Benin). PhD thesis, Hohenheimer Bodenkundliche Hefte, Heft 12. 168 S.

Book chapters in text books

1.      Gaiser, T. (2002): . International übliche Verfahren der Bodenbewertung. In: Scheffer F. (ed.): Lehrbuch der Bodenkunde. 15. Aufl. Kapitel 9.6. Spektrum Akademischer Verlag, Heidelberg, 2002. S.559-563.

2.      Gaiser, T. (2006): Bodenklassifikation. In: Gebhardt, H., Glaser, R., Radtke U., Reuber P. (eds.): Geographie – Physische Geographie und Humangeographie, 1. Auflage, Kapitel 11.5. Spektrum Akademischer Verlag, Heidelberg. 2006. S.380-389.

3.      Gaiser, T. (2010): . International übliche Verfahren der Bodenbewertung. In: Blume, H.-P. et al. (eds.): Lehrbuch der Bodenkunde, 16. Aufl., Kapitel 11.5, Spektrum Akademischer Verlag, Heidelberg, 2010. S.534-538.

Other book chapters

1.      Gaiser, T., Oehl, F., Stahr, K. (1998): Effect of mulch material from agroforestry trees on nutrient uptake and nutrient balance of maize. In: Renard, G., Neef, A., Becker, K. and von Oppen, M. (eds.). Soil fertility management in West African land use systems. Margraf Verlag, Weikersheim. p.273-280.

2.      Herrmann, L., Huwer, G., Gaiser, T., Stahr, K. (1998): Alternative cropping systems and nutrient cycling of Vertisols in South-Benin. In: Renard, G., Neef, A., Becker, K. and von Oppen, M. (eds.). Soil fertility management in West African land use systems. Margraf Verlag, Weikersheim. p.141-146.

3.      Gaiser T., Igué A.M., Weller U., Herrmann L. (2000): Soils in Relation to Landscape. In Graef, F., Lawrence, P, von Oppen, M. (eds.): Adapted Farming in West Africa: Issues, Potentials and Perspectives. Verlag Ulrich Grauer,Stuttgart, Germany. pp. 231-240.

4.      Koch, I., Gaiser, T., Stahr, K. (2000): Possibilities for improving the phosphorus supply to maize on Acrisols in southern Benin. In: Renard, G., Krieg, S., Lawrence, P. and von Oppen, M. (eds.). Farmers and scientists in a changing environment: Assessing research in West Africa. Margraf Verlag, Weikersheim, Germany. p. 171-176.

5.      Würth, A., Gaiser, T., Stahr, K. (2000): Verification of a production function for maize in southern Benin. In: Renard, G., Krieg, S., Lawrence, P. and von Oppen, M. (eds.). Farmers and scientists in a changing environment: Assessing research in West Africa. Margraf Verlag, Weikersheim, Germany. p. 145-149.

6.      Gaiser, T., Graef, F., Hilger, T.H., Ferreira L.G.R., Stahr, K. (2003): An Information System for Land Resources in Piauí and Ceará. In: Gaiser, T., Araújo, J.C., Frischkorn, H., Krol, M. (eds.), Global Change and Regional Impacts: Water Availability and Vulnerability of Ecosystems and Society in Semi-Arid Northeast of Brazil. Springer Verlag, Heidelberg. p.267-278.

7.      Döll, P., Krol, M., Fuhr, D., Gaiser, T., Herfort, J., Höynck, S., Jaeger, A., Külls, C., Mendiondo E.M., Printz A., Voerkelius, S. (2003): Integrated Scenarios of Regional Development in Ceará and Piauí. In: Gaiser, T., Araújo, J.C., Frischkorn, H., Krol, M. (eds.), Global Change and Regional Impacts: Water Availability and Vulnerability of Ecosystems and Society in Semi-Arid Northeast of Brazil. Springer Verlag, Heidelberg. p.19-41.

8.      Lange, F.-M., Halm, D., Gaiser, T. (2003): Seepage and Groundwater Recharge in Sandy/Loamy Chapada Soils of the Picos Region, Piauí. In: Gaiser, T., Araújo, J.C., Frischkorn, H., Krol, M. (eds.), Global Change and Regional Impacts: Water Availability and Vulnerability of Ecosystems and Society in Semi-Arid Northeast of Brazil. Springer Verlag, Heidelberg. p.291-301.

9.      Gaiser, T., Ferreira, L.G.R., Stahr, K. (2003): General view of the WAVES program. In: Gaiser, T., Araújo, J.C., Frischkorn, H., Krol, M. (eds.), Global Change and Regional Impacts: Water Availability and Vulnerability of Ecosystems and Society in Semi-Arid Northeast of Brazil. Springer Verlag, Heidelberg.p.1-16.

10.  Gaiser, T., Goldbach, H., Giertz, S., Hiepe, C., Klose, A. (2010): Soils. In: Speth, P., Christoph, M., Diekkrüger, B. (Eds.) Impacts of Global Change on the Hydrological Cycle in West and Northwest Africa. Springer Verlag, Heidelberg, Germany. p. 46-52.

11.  Enders, A., Diekkrüger, B., Laudien, R., Gaiser, T., Bareth, G. (2010): The IMPETUS Spatial Decision Support Systems. In: Speth, P., Christoph, M., Diekkrüger, B. (Eds.) Impacts of Global Change on the Hydrological Cycle in West and Northwest Africa. Springer Verlag, Heidelberg, Germany. p. 360-392.

12.  Kuhn, A., Heidecke, C., Roth, A., Goldbach, H., Burkhardt, J., Linstäter, A., Kemmerling, B., Gaiser, T. (2010): Importance of resource management for livelihood security under Climate Change in Southern Morocco. In: Speth, P., Christoph, M., Diekkrüger, B. (Eds.) Impacts of Global Change on the Hydrological Cycle in West and Northwest Africa. Springer Verlag, Heidelberg, Germany. p. 566-590.

13.  Kuhn, A., Mulindabigwi, V., Janssens, M., Steup, G., Gaiser, T., Goldbach, H., Gruber, I., Gandonou, E. (2010): Impacts of Global Change on food security in Benin. In: Speth, P., Christoph, M., Diekkrüger, B. (Eds.) Impacts of Global Change on the Hydrological Cycle in West and Northwest Africa. Springer Verlag, Heidelberg, Germany. p. 454-482.

14.  Gaiser, T., Stahr, K. (2013): Soil organic carbon, soil formation and soil fertility. In. Lorenz, K., Lal, R. (eds.): Ecosystem services and carbon sequestration in the biosphere. Springer, Heidelberg, Germany. (accepted)

 

 

Contributions to conferences

 

1.      Gaiser, T. and Stahr, K. (1991): Bedeutung des Humusgehaltes für die Pflanzenernährung in den subhumiden Tropen (Significance of soil organic matter for plant nutrition in the subhumid tropics). Mitteilungen. Dtsch. Bodenkundl. Gesellsch. 66(II):623-626.

2.      Gaiser, T., Stahr, K. and Kang, B.T. (1992): Mulching effect on P-uptake by maize in a Ferrali-Haplic Nitosol in the subhumid tropics. Proceedings of the Forth Conference of the World Phosphate Institute, 8-11 September 1992, Ghent, Belgium, pp.610-612.

3.      Gaiser, T., Bernard, M. and Stahr, K. (1993): Vergleich der C- und N-Mineralisierung in Ferrali-Haplic Acrisolen und Stagni-Eutric Vertisolen unter Feld- und Laborbedingungen (Comparison of C and N mineralisation in Ferrali-Haplic Acrisols and Stagni-Eutric Vertisols in the field and in the laboratory). Mitteilungen. Dtsch. Bodenkundl. Gesellsch. 72 (1):699-702.

4.      Gaiser, T. and Stahr, K. (1993): Bedeutung der leichten Fraktion der organischen Bodensubstanz für die Stickstoffmineralisierung und die Ertragfähigkeit eines Ferrali-Haplic Acrisol (Significance of the light organic matter fraction for nitrogen mineralization and fertility of a Ferrali-Haplic Acrisol). Mitteilungen. Dtsch. Bodenkundl. Gesellsch. 71:243-246.

5.      Hebel, A., Gaiser, T., Stahr, K. and Nachtergaele, F.O. (1994): Land use and management requirements in relation to FAO topsoil types. Proceedings of the 15th World Congress of Soil Science, Acapulco, Mexico. Vol .9, p.543.

6.      Gaiser, T. and Hilger, T.H. (1997): Simulation der Ertragsbildung von Trockenreis auf stark verwitterten tropischen Böden (Simulation of yield performance of upland rice on highly weathered tropical soils). Mitteilungen Dtsch. Bodenkundl. Gesell. 85(II):891-894.

7.      Halm, D., Gaiser, T. and Stahr, K. (1997): Meßwertkorrektur und Kalibrierung von TDR-Sonden in Abhängigkeit von der Bodenart und der Lagerungsdichte (Correction of soil moisture measurements and calibration of TDR probes in relation to texture and bulk density). Mitteilungen Dtsch. Bodenkundl. Gesell. 85(I):93-96.

8.      Gaiser, T. and Stahr, K. (1998): Testing a minimum data set of crop requirements as a basis for land evaluation. In: Technischer Fortschritt im Spannungsfeld von Ernährungssicherung und Ressourcenschutz. Tagungsband Tropentag 1997. Volume 2. Universität Hohenheim. pp.1-6.

9.      Gaiser, T., Stahr, K. and Kang, B.T. (1998): Mulching effect on soil nitrification and K uptake of maize in a tropical Acrisol. Proceedings of the 16th World Congress of Soil Science. Montpellier, France. CD-ROM.

10.  Gaiser, T., Marohn, C., Bach, B. and Stahr, K. (1999): Standortsbewertung im semi-ariden Nordosten Brasiliens (Land evaluation in the semiarid Northeast of Brazil). Mitteilungen Dtsch. Bodenkundl. Gesell. 91(2):981-984.

11.  Gaiser, T., Fadegnon, B., Cretenet, M. and Gaborel, C. (1999): Long-term Experiments on a Tropical Acrisol: Evolution of Soil Properties and Maize Yield. In: Merbach, W. und Körschens, M., Dauerdüngungsversuche als Grundlage für nachhaltige Landnutzung und Quantifizierung von Stoffkreisläufen. Umweltforschungszentrum Leipzig-Halle GmbH, UFZ Bericht 24:153-156.

12.  Güntner, A., Bronstert, A. and Gaiser, Th. (1999): Parameterization of lateral hydrological processes based in geomorphologic units. In: IUGG 99, XXII General Assembly of the International Union of Geodesy and Geophysics, Birmingham. Books of abstracts II, p. B.317.

13.  Halm, D., Gaiser, T. and Stahr, K. (1999): Soil water balance modeling in the semiarid Northeast of Brazil. Mitteilungen Dtsch. Bodenkundl. Gesell. 91(1):161-163

14.  Koch, I., Gaiser, T. and Stahr, K. (1999): Möglichkeiten zur Verbesserung der P-Versorgung bei Mais auf Acrisolen in Süd-Benin. (Alternatives to improve P-supply to maize on Acrisols in Southern Benin). Mitteilungen Dtsch. Bodenkundl. Gesell. 91(2):807-810.

15.  Barros de, I., Gaiser, T., Herfort, J. and Roemheld, V. (2000): Identification of nutrient limitations for development and production of Cowpea (Vigna unguiculata) Intercropped with maize on a Alumi-Haplic Acrisol. In: Knowledge Partnership: Challenges and perspectives for research and education at the turn of the millenium. Deutscher Tropentag on 14/15 October 1999 in Berlin. Humboldt Universität zu Berlin, Fachgebiet Tierzucht in den Tropen und Subtropen. Berlin, Germany. CD-Rom.

16.  Ferreira, L.G.R., Saboya, M.F. and Gaiser, T. (2000): Testing of the mathematical model EPIC for Cowpea (Vigna unguiculata (L.) Walp) and Lettuce (Lactuva sativa) in the semi-arid Northeast of Brazil. In: Printz, A. (ed.), Proceedings of the III. International WAVES Workshop in Freising-Weihenstephan. Technische Universität München, Institut für Landschaftsökologie. pp. 50-54.

17.  Gaiser, T., Ferreira, L.G.R., Hilger, T.H., Römheld, V. and Stahr, K. (2000): The land resources information system SPICE as a tool for integration of the results of the research area "Agroecosystems". In: Printz, A. (ed.), Proceedings of the III. International WAVES Workshop in Freising-Weihenstephan. Technische Universität München, Institut für Landschaftsökologie. pp. 46-49.

18.  Gaiser, T., Hilger, T.H., Ferreira, L.G.R., Herfort, J., Barros, I. and Stahr, K. (2000) : The soil and terrain information system SPICE for estimating yield potentials at a regional scale in the states of Piauí and Cearà (Brazil). In: Knowledge Partnership: Challenges and perspectives for research and education at the turn of the millenium. Deutscher Tropentag on 14/15 October 1999 in Berlin. Humboldt Universität zu Berlin, Fachgebiet Tierzucht in den Tropen und Subtropen. Berlin, Germany. CD-Rom.

19.  Gaiser, T., Zellhuber, A. and Mörtl, S. (2000): GIS-gestützte Zuordnung von Landnutzungs- und Bodenmustern als Grundlage für die Regionalplanung im Nordosten Brasiliens. In: International Agricultural Research - A Contribution to Crisis Prevention. Deutscher Tropentag on October 11-12, 2000 in Hohenheim. Universität Hohenheim, Tropenzentrum. CD-ROM.

20.  Hilger, T. H., Herfort, J., de Barros, I., Gaiser, T., Saboya, L.M.F., Ferreira, L.G.R. and Leihner, D.E. (2000): Potential of EPIC for Crop Growth Simulation in Semiarid Environments of NE Brazil. In: International Agricultural Research - A Contribution to Crisis Prevention. Deutscher Tropentag on October 11-12, 2000 in Hohenheim. Universität Hohenheim, Tropenzentrum. CD-ROM.

21.  Hilger, T.H., Gaiser, T., Herfort, J., Ferreira, L.G.R., Leihner, D. E. (2000): Calibration of EPIC for simulation of crop growth in NE-Brazil. In: Knowledge Partnership: Challenges and perspectives for research and education at the turn of the millenium. Deutscher Tropentag on 14/15 October 1999 in Berlin. Humboldt Universität zu Berlin, Fachgebiet Tierzucht in den Tropen und Subtropen. Berlin, Germany. CD-Rom.

22.  Igué, A.M., Gaiser, T. and Stahr, K. (2000): The impact of climate variability on crop production in Central-Benin. In: International Agricultural Research - A Contribution to Crisis Prevention. Deutscher Tropentag on October 11-12, 2000 in Hohenheim. Universität Hohenheim, Tropenzentrum. CD-ROM.

23.  Gaiser, T. and Stahr K. (2001): Bodeninformationssysteme zur Bereitstellung von Bodeninformation auf verschiedenen Maßstabsebenen - eine Fallstudie aus Nordost-Brasilien. Mitteilungen Dtsch. Bodenkundl. Gesell., 96(2):497-498.

24.  Lange, F.- M., Gaiser, T. and Stahr, K. (2001): Vergleichende Bodenfeuchtemessungen mit TDR-Sonden auf natürlichen und landwirtschaftlich genutzten Standorten in der Mikroregion Picos/Piaui im semiariden Nordosten Brasiliens zur Validierung eines lokalen Wasserhaushaltsmodells. Mitteilungen Dtsch. Bodenkundl. Gesell., 96(1):101-102.

25.  Gaiser, T., Ferreira, L.G.R. and Stahr, K. (2002): Potential applications of the soil and terrain information system SPICE in soil degradation risk assessment. In: Embrapa Solos, Sociedade Brasileira de Ciência do Solo, Proceedings of the Third International Conference on Land Degradation, 17-21, September, 2001, Rio de Janeiro. CD-ROM.

26.  Ferreira, L.G.R., Gaiser, T. and Stahr, K. (2002): The WAVES Program: Conception, Results and Perspectives. Proceedings of the German-Brazilian Workshop on Neotropical Ecosystems, 3-8 September 2000 at Hamburg. p. 31-39.

27.  Herrmann, L., Graef, F., Igue, M., Weller, U., Gaiser, T., Hammel, K. and Stahr, K. (2002): SOTER as a tool for land use planning - Experiences in West Africa and future applications. Proceedings of the 17th World Congress of Soil Science. Bangkok, Thailand. CD-ROM.

28.  Igué, A.M., Stahr, K. and Gaiser, T. (2002): Medium scale land evaluation application of SOTER in Central Benin. Proceedings of the 17th World Congress of Soil Science. Bangkok, Thailand. CD-ROM.

29.  Gaiser, T., Lange, F.-M. and de Barros, I. (2002): Simulation of biomass production and soil water dynamics on highly weathered, acidic Acrisols with the EPICSEAR model. In. Deininger, A. (ed.), Challenges to Organic Farming and Sustainable Land Use in the Tropics and Subtropics. International Research on Food Security, Natural Resource Management and Rural Development. Deutscher Tropentag 2002. Kassel University Press GmbH, Germany. Online: http://www.tropentag.de/2002/abstracts/full/82.pdf.

30.  Ferreira, L.G.R., Gaiser, T. and Stahr, K. (2002): The WAVES Program: Conception, Results and Perspectives. In: Lieberei, R., Bianchi, H.-K., Boehm, V., Reisdorff, C., (eds.): Neotropical Ecosystems. Proceedings of the German – Brazilian Workshop, Hamburg 2000. GKSS-Geesthacht, Germany. p.31-39.

31.  Gaiser, T. and Hauschild, M. (2002): Cooperative Research in the Area of  Water Resources and Water Management between Germany and Brazil: Achievements and Prospects. In: Lieberei, R., Bianchi, H.-K., Boehm, V., Reisdorff, C., (eds.): Neotropical Ecosystems. Proceedings of the German – Brazilian Workshop, Hamburg 2000. GKSS-Geesthacht, Germany. p.52-56.

32.  Halm, D., Gaiser, T. and Stahr, K. (2002): Soil Water Balance as Limiting Factor for Land-use in the Semi-arid Picos-Region, Piauí, NE-Brazil. In: Lieberei, R., Bianchi, H.-K., Boehm, V., Reisdorff, C., (eds.): Neotropical Ecosystems. Proceedings of the German – Brazilian Workshop, Hamburg 2000. GKSS-Geesthacht, Germany. p. 129.

33.  Gaiser, T., Ferreira, L. C. G., Hilger, T., de Barros, I. and Stahr, K. (2002): SPICE – A Land Resources Information System for the States of Ceará and Piauí. In: Lieberei, R., Bianchi, H.-K., Boehm, V., Reisdorff, C., (eds.): Neotropical Ecosystems. Proceedings of the German – Brazilian Workshop, Hamburg 2000. GKSS-Geesthacht, Germany. p.795 – 802.

34.  De Barros, I., Gaiser, T., Ferreira, L. G. R. and Römheld, V. (2002): Identification of Nutrient Limitation for Delevopment and Yield of Cowpea (Vigna unguiculata) and Maize (Zea mays), in Intercropping System, on Two Representative Soils of Piauí. In: Lieberei, R., Bianchi, H.-K., Boehm, V., Reisdorff, C., (eds.): Neotropical Ecosystems. Proceedings of the German – Brazilian Workshop, Hamburg 2000. GKSS-Geesthacht, Germany. p.188.

35.  Herfort, J., Hilger, T.H., Gaiser, T., de Barros, I., Saboya, L. M. F., Ferreira, L. G. R. and Leihner, D. E. (2002): Adaption of the Crop Growth Models EPIC and Almanac to Local Cowpea and Maize Cropping Systems in Northeast Brazil. In: Lieberei, R., Bianchi, H.-K., Boehm, V., Reisdorff, C., (eds.): Neotropical Ecosystems. Proceedings of the German – Brazilian Workshop, Hamburg 2000. GKSS-Geesthacht, Germany. p.811-816.

36.  Hilger, T.H., Herfort, J., de Barros, I., Gaiser, T. Saboya, L. M. F., Ferreira, L. G. R. and Leihner, D. E. (2002): Potential of EPIC and ALMANAC to Estimate Crop Yields Under Erratic Rainfall in NE Brazil. In: Lieberei, R., Bianchi, H.-K., Boehm, V., Reisdorff, C., (eds.): Neotropical Ecosystems. Proceedings of the German – Brazilian Workshop, Hamburg 2000. GKSS-Geesthacht, Germany. p. 803-810. CD-ROM.

37.  Saboya, L.M.F., Ferreira, L.G.R., Gaiser, T.(2002): Sensitivity of EPIC simulations of biomass and yield of Cowpea to physiological parametrization. In: Lieberei, R., Bianchi, H.-K., Boehm, V., Reisdorff, C., (eds.): Neotropical Ecosystems. Proceedings of the German – Brazilian Workshop, Hamburg 2000. GKSS-Geesthacht, Germany. p. 319.

38.  Graff, L., de Barros, I., Gaiser, T., Römheld, V. and Runjanek, N (2002): Root Colonization and Biological Nitrogen Fixation of Cowpea (Vigna unguiculata) Inoculated with Rhizobia Strains on an Alumi-Haplic Acrisol in Piauí, Brazil. In: Lieberei, R., Bianchi, H.-K., Boehm, V., Reisdorff, C., (eds.): Neotropical Ecosystems. Proceedings of the German – Brazilian Workshop, Hamburg 2000. GKSS-Geesthacht, Germany. p. 249.

39.  Gaiser, T. & Stahr, K. (2003): Integrierte Modellierung von Flusseinzugsgebieten zur Entwicklung von Strategien für den nachhaltigen Gewässerschutz. Mitteilungen Dtsch. Bodenkundl. Gesell., 102(2): 767-768.

40.  Gaiser, T., Mounkaila, M., Maurer, T. and Herrmann, L. (2003): A land resource database for the Republic of Niger to estimate topsoil losses through wind erosion at the regional scale. http://www.tropentag.de/2003/abstracts/full/310.pdf.

41.  Lange, F.-M., Gaiser, T. and Stahr, K. (2003): Vergleichende Bodenwasserdynamik unterschiedlicher Mais-/Bohnen-Mischkulturen in der Region Picos/Piauí (Nordostbrasilien). Mitteil. Dt. Bodenkundl. Gesell. 102(2):363.

42.  Mounkaila, M., Herrmann, L., Maurer, T., Gaiser, T. and Stahr, K. (2003): Spectral and mineralogical properties of potential dust sources on a transect from Sahara to Sahel in Chad. Mitteilungen Dtsch. Bodenkundl. Gesell. 102(2):743-744.

43.  Herrmann, L., Gaiser, T., Zarei, M., Maurer, T., Mounkaila, M. and K. Stahr (2003): Mineral dust emission and its properties at the soil-atmosphere interface: medium term variations and future changes. German Climate Research Programme, Statusseminar 2003. DLR Projektträger Umweltforschung, Bonn. Germany. p. 421-422.

44.  Maurer, Th., Herrmann, L., Gaiser, T., Mounkaila, M. and Stahr, K. (2003): Konzeption und Einsatz eines portablen Windtunnels zur Erfassung des Staubemissionspotentials von Bodenoberflächen im Sahelgebiet. Mittlg. Dt. Bodenkundl. Ges. 112: 783-784.

45.  Olanrewaju, L., Gaiser, T. and  Stahr K. (2004): Effect of Land Use Changes on Sediment Load in the Zagbo River Catchment in Southern Benin. Rural Poverty Reduction through Research for Development and Transformation: international research on food security, natural resource management and rural development. Deutscher Tropentag 2004, Berlin. http://www.tropentag.de/2004/abstracts/full/101.pdf

46.  Herrmann, L., U. Weller, F. Graef, M. Igue, T. Gaiser, K. Hammel & K. Stahr (2004): SOTER application for land use planning - Experiences and future applications. Pp. 131-141 in: H. Eswaran et al. (Eds.) Innovative Techniques in Soil Survey "Developing the foundation for a new generation of soil resource inventories and their utilization". Land Development Department, Chattuchak, Bangkok, Thailand.

47.  Gaiser, T., Maurer, T., Mounkaila, M. and Herrmann, L. (2004): Comparison of different upscaling approaches for soil information and their effects on the estimation of regional water and wind erosion potentials. Proceedings of the European Soil Science Society Conference 2004, Freiburg, Germany. (Full paper 665 on CD).

48.  Stahr, K., Gaiser, T. and Yuan, G. (2004): Soils of the Manas He river catchment with special focus on salinisation. In: Sun, G et al. : Paleontology, geological evolution and environmental changes in Xinjiang, Chinas. Proceedings of Sino-German Symposium at Urumqi. p.91.

49.  Gaiser, T. and Dukhovny, V. (2004): Integrated scenarios for strategic planing of water resources in river basins - experiences from tropical and subtropical regions. International conference on  Integrated water resources management in tropical river basins. 4-6 October 2004, Cotonou, Benin Conference proceedings. p.25

50.  Maurer, T., L. Herrmann, T. Gaiser & M. Mounkaila (2004): Measurement and regionalization of wind erosion susceptibilities of Sahelian surfaces. Proceedings of the European Soil Science Society Conference 2004, Freiburg, Germany (Abstract 297 on CD).

51.  Mounkaila, M. L. Herrmann, T. Gaiser & T. Maurer (2004): Spectral and mineralogical properties of potential dust sources on a transect from Sahara to Sahel in Chad. Proceedings of the European Soil Science Society Conference 2004, Freiburg, Germany (Abstract 943 on CD).

52.  Gaiser, T., Weippert, H. und Stahr, K. (2005): Problems related to the upscaling of an agroecosystem modell in the Neckar basin (German). Mitteil. Dt. Bodenkundl. Gesell. .107(2):475-476.

53.  Erkossa, T., Stahr, K., Gaiser, T. (2005): Runoff and soil erosion from Vertisol in the Hoghlands of Ethiopia as affected by land preparation methods. Mitteil. Dt. Bodenkundl. Gesell. 107(2):605-606.

54.  Weippert, H., Gaiser, T. and Stahr, K. (2005): Disaggregation of soil information as contribution to integrated water management in the Neckar basin (German). Mitteil. Dt. Bodenkundl. Gesell. 107(2):759-760.

55.  Mounkaila, M., Herrmann, L., Gaiser, T., Maurer, T. and Stahr, K. (2005): Characterisation of soil/sediment surfaces in the arid and sem-arid zones by means of remote sensing. Mitteil. Dt. Bodenkundl. Gesell. 107(1):381-382.

56.  Mounkaila, M., Herrmann, L., Gaiser, T., Maurer, T. and Stahr. K (2005): Characterization of soil/sediment surfaces in the arid and semi-arid zones by means of remote sensing. Diskussionsforum Bodenwissenschaften 6: 43-45.

57.  Maurer, T., Herrmann, L., Gaiser, T., Mounkaila, M., Stahr, K. (2005): Regionalisation of wind erosion potentials in Sahelian SW-Niger. Mitteil. Dt. Bodenkundl. Gesell. 107(2): 613-614.

58.  Igue, A.M., Maier, R., Gaiser, T., Stahr, K. (2005): Land Evaluation of Cotton Production in the Azokan's Catchment in the Moist Savannah of  Benin. In: The Global Food & Product Chain –Dynamics, Innovations, Conflicts, Strategies. Deutscher Tropentag 2005, Hohenheim.

59.  Barthel, R., Jagelke, J., Nickel, D., Wolf, J., Rojanschi, V., Trifkovic, A., Meleg, A., Braun, J., Mauser, W. und T. Gaiser (2005): Comparison of tools for integrated assessment and management of groundwater resources in different river basins with special regard to sustainability. Geophysical Research Abstracts, European Geosciences Union (EGU) - General Assembly 24. - 29. April 2005, Wien, Österreich), 4/2005. - Vol.: 7 (Kurzfassung)

60.  Azarmdel, H., Ownegh, M., Mikaeili, A.R., Gaiser, T. and Ghangharmeh, A.A. (2006) : Measuring land use sustainability in the Southeast Caspian Sea Coastal zone, Golestan province, Iran. Proceedings of the International Conference on Sustainability Measurement and Modelling (ICSMM) Barcelona, 2006.

61.  Gaiser, T., Lange, F.-M., Weippert, H., Henseler, M. und Stahr, K. (2006): Umweltauswirkungen der GAP-Reform – Das Landressourcen-Informationssystem SLISYS ermöglicht Prognosen zur Stickstoffauswaschung im Neckareinzugsgebiet. Tagungsband der Fachtagung Bodenmärkte, Juni 2006, Stuttgart. Umweltministerium Baden-Württemberg.

62.  Printz, A., Gaiser, T., Schwarz von Raumer, H.-G., Stahr, K., Götzinger, J., Jagelke, J., Henseler, M.,Yang, W., R. Barthel, Schneider, M., Lange, F.-M. (2006): Überblick über die Szenarienbildung und Einführung in die integrierte Modellierung (2006) . Fachtagung „Zukunftsperspektiven für ein integriertes Wasserressourcen-Management im Einzugsgebiet Neckars“, 18.7.2006, Universität Hohenheim. S. 10-18.

63.  Gaiser, T., Lange, F.-M., Weippert, H., Henseler, M. und Stahr, K. (2006): Grundwasserbelastungen durch Nitrat - Einfluss der GAP Reform. In: Regierungspräsidium Stuttgart (Hrsg.), Zukunftsperspektiven für ein integriertes Wasserressourcen-Management im Einzugsgebiet Neckars, Tagungsdokumentation, 18.7.2006, Stuttgart-Hohenheim. Regierungspräsidium Stuttgart, Stuttgart, Deutschland. S. 49-54.

64.  Gaiser, T. und Stahr, K. (2006): Einführung in das Projekt RIVERTWIN. In: Regierungspräsidium Stuttgart (Hrsg.), Zukunftsperspektiven für ein integriertes Wasserressourcen-Management im Einzugsgebiet Neckars, Tagungsdokumentation, 18.7.2006, Stuttgart-Hohenheim. Regierungspräsidium Stuttgart, Stuttgart, Deutschland. S. 12-17.

65.  Gaiser, T., Printz, A. and Stahr, K. (2006): RIVERTWIN – development of a regional model for integrated management of water resources. In: Beyond the River – Sharing Benefits and Responsabilities, Stockholm International Water Institute, World Water Week August 20-26, 2006, Stockholm, Sweden. p. 155-156.

66.  Gaiser, T., Weippert, H., Igue, A.M. and Stahr, K. (2006): Application of the land resources information system SLISYS in the Oueme basin of Benin (West Africa). Conference on International Agricultural Research for Development, 11-13/10/2006, Bonn, Germany. http://www.tropentag.de/2006/abstracts/full/183.pdf

67.  Igue, A.M., Houndagba, C.J., Gaiser, T. and Stahr, K. (2006): Land Use/Cover Map and its Accuracy in the Oueme Basin of Benin (West Africa). Conference on International Agricultural Research for Development, 11-13/10/2006, Bonn, Germany. http://www.tropentag.de/2006/abstracts/full/166.pdf

68.  Stahr, K., Gaiser, T., Printz, A., Schneider, M. und Lange, F.-M. (2006): Ein Forschungsprojekt zur integrierten Bewirtschaftung von Flusseinzugsgebieten - RIVERTWIN. In: Wasser- und Bodentage, Tagung des DWA-Hauptauschusses “Gewässer und Boden”, 25./26.10.2006, Feuchtwangen.

69.  Gaiser, T. and Stahr, K. (2006): A land resources information system to asses soil losses by water and wind erosion at the basin scale. Terrestrial Environmental evolution in Chinese basins. First symposium of the Sino-German Group of Paleontology and Geosciences, 28/10-1/11/2006, Frankfurt a.M., Germany, p. 8.

70.  Eitel, B., Gaiser, T., Thein, J., Schiedeck, T. (2006): Environmental changes and groundwater problems in NW China. Terrestrial Environmental evolution in Chinese basins. First symposium of the Sino-German Group of Paleontology and Geosciences, 28/10-1/11/2006, Frankfurt a.M., Germany, p. 7.

71.  Barthel, R., Wolf, J., Jagelke, J., Rojanschi, V., Mauser, W., Gaiser, T., Braun, J. (2006): Großskalige Grundwasserströmungsmodelle als Bestandteil integrierter Flussgebietsmanagementsysteme am Beispiel Neckar und Obere Donau. - Hydrogeologie und Umwelt Heft 33, 26 S., 12 Abb., 6 Tabellen, Würzburg (accepted).

72.  Gaiser, T. , A.Printz, H.-G. Schwarz von Raumer, M. Schneider, J. Götzinger, F.-M. Lange, R. Barthel, M. Henseler, A. Bárdossy, G. Kaule and K. Stahr (2006): Das EU-Projekt RIVERTWIN-Neckar: Ein Beitrag zum integrierten Flussgebietsmanagement. In: Arbeitskreis KLIWA, Klimaveränderungen und Konsequenzen für die Wasserwirtschaft, KLIWA Berichte 10:199-210. http://www.kliwa.de/download/KLIWAHeft10.pdf.

73.  Igué, A.M., Worou, R., Houndagba, C.J., Gaiser, T. and Stahr, K. (2007): Dynamic of Land Use/Cover in the protected forest of Toui-Kilibo in the Collines Department (Republic of Benin). Proceedings of the 4th International conference of the African Soil Science Society, 07-13 January 2007, Accra GHANA.

74.  Barthel, R., Jagelke, J., Gaiser, T., Sonneveld, B., Printz, A. and Götzinger, J. (2007) Integrated Assessment of Groundwater Resources in the Ouémé Basin, Benin, West Africa. Conference of the European Geographical Union, April 5-9, 2007, Viennna..

75.  Gaiser, T., Igue, M.A., Weippert, H., Stahr, K. (2007): Bedeutung der Bodenverbreitung in Bodengesellschaften mittelmaßstäbiger Bodenkarten für die regionale Ertragsabschätzung mit Simulationsmodellen. Mitteil. Dt. Bodenkundl. Gesell. 110:455-456.

76.  Billen, N, Röder, C., Chen, H., Gaiser, T. (2007): Messung und Simulation der klimawirksamen C-Anreicherung in Böden durch extensivierte Bewirtschaftung  Mitteil. Dt. Bodenkundl. Gesell. 110:671-672

77.  Frauenknecht, H., Gaiser, T., Stahr, K. (2007): Einfluss der Bodenheterogenität auf den landwirtschaftlichen Ertrag infolge von Überstauereignissen. Mitteil. Dt. Bodenkundl. Gesell. 110:589-590.

78.  Maurer, T., Hermann, L., Mounkaila, M., Gaiser, T., Stahr, K. (2007): Winderosionspotential in Abhängigkeit von Eigenschaften natürlicher semi-arider Oberfrlächen. Mitteil. Dt. Bodenkundl. Gesell. 110:697-698.

79.  Gaiser, T., Stahr, K., Printz, A., Dukhovny, V. (2007): Development of a Regional Model Integrating Land and Water Management - Achievements and Lessons Learnt. In: Tielkes, E., Utilisation of diversity in land use systems: Sustainable and organic approaches to meet human needs. Book of Abstracts, Tropentag 2007, Cuvillier Verlag, Göttingen. http://www.tropentag.de/2007/proceedings/node373.html#8052

80.  Gaiser, T., Henseler, M., Zardava, K., Kiourtsidis, C., Ganoulis, J., Printz, A. and Krimly, T. (2007): Estimating the effects of the EU Common Agricultural Policy on ground and surface water quality: A case study in the Neckar basin. In: Conference on the Science and Education of Land Use: A transatlantic, multidisciplinary and comparative approach, Washington D.C., USA. http://www.nercrd.psu.edu/TALUC/Papers/GaiserEstimating.pdf

81.  Gaiser, T, Paeth, H., Giertz, S., Kuhn, A., Thamm, H.-P., Gruber, I., Röhrig, J.. Steup, G., Hiepe, C., Heuer, K.-O., Srivastava, A., Menz, G., Heckelei, T., Diekkrüger, B., Goldbach, H. (2008): Integration of biophysical and economic models into a decision support framework for sustainable food production and natural resource management in Benin. In: Vielhauer, K. et al., Proceedings of the International Conference “Global Change and Water Resources in West Africa”, Ouagadougou, 25-28 August 2008. p.50

82.  Goldbach, H., Heckelei, T., Kuhn, A., Heidecke, C., Abdel-Razek, M., Gresens, F., Roth, A., Gaiser, T., Kirscht, H. (2008): Agricultural production and income security under increasing water uncertainty in the Drâa valley. In: Vielhauer, K. et al., Proceedings of the International Conference “Global Change and Water Resources in West Africa”, Ouagadougou, 25-28 August 2008. p.88.

83.  Goldbach, H., Heckelei, T., Kuhn, A., Heidecke, C., Abdel-Razek, M., Gresens, F., Roth, A. and Gaiser, T. (2008): Water demand, land use and income security under conditions of global change in the South of Morocco. In: Vielhauer, K. et al., Proceedings of the International Conference “Global Change and Water Resources in West Africa”, Ouagadougou, 25-28 August 2008. p. 36

84.  Gaiser, T., Paeth, H., Giertz, S., Kuhn, A., Thamm, H.-P., Gruber, I., Röhrig, J., Steup, G., Hiepe, C., Heuer, K.-O., Srivastava, A. and Goldbach, H. (2008): Food security in Benin: Development of decision support systems at different spatial scales. In: Vielhauer, K. et al., Proceedings of the international Conference “Global Change and Water Resources in West Africa”, Ouagadougou, 25-28 August 2008. p. 80

85.  Vashev, B., Gaiser, T., Sharma, S.-K., Dagar, J.-C., Singh, G. and Stahr, K. (2008):  Biomass production potential on the salt affected soils of Haryana State, Northwest India. In: Tielkes E. (ed.), Competition for Resources in a Changing World: New Drive for Rural Development. Book of astracts, Tropentag 2008, pp 183-184.

86.  Vashev, B., Gaiser, T., Dagar, J.C., Singh, G. and Stahr, K. (2008): Biomass production potential on saline and sodic soils in South-West Asia. In: Blum, W.H., Gerzabek, M.H., Vodrazka, M. (Eds.) Eurosoil 2008. http://www.ecsss.net/web/MDB/media_folder/39_abstracts.pdf

87.  Mulindabigwi, V., Gaiser , T. (eds.) (2009): Concepts et outils pour une gestion durable des ressources en eau. Book of abstracts, International Conference, Cotonou, 11 -12 March 2009. 45 p.

88.  Röhrig, J., Gaiser, T., Hiepe, C., Laudien, R., Menz, G. (2009): L'impact des changements climatiques sur les conditions biophysiques de l'utilisation des terres agricoles au Bénin. In : Mulindabigwi, V., Gaiser , T. (eds.), Concepts et outils pour une gestion durable des ressources en eau. Book of abstracts, International Conference, Cotonou, 11 -12 March 2009. p.21.

89.  Sintondji, L., Gaiser, T., Hiepe, C., Giertz, S., Diekkrüger, B. , Enders, A., Goldbach, H. (2009): Scénarios futurs et leurs impacts sur la sécurité alimentaire et sur les ressources naturelles au Bénin. In : Mulindabigwi, V., Gaiser , T. (eds.), Concepts et outils pour une gestion durable des ressources en eau. Book of abstracts, International Conference, Cotonou, 11 -12 March 2009. p.24.

90.  Kuhn, A., Gaiser, T., Gandonou, E. (2009) : L’impact des technologies d’amélioration de la fertilité des sols sur les rendements, l’offre agricole et l’utilisation des ressources. In : Mulindabigwi, V., Gaiser , T. (eds.), Concepts et outils pour une gestion durable des ressources en eau. Book of abstracts, International Conference, Cotonou, 11 -12 March 2009. p.25.

91.  Steup, G., Gbaguidi, F., Sintondji, L., Gaiser, T. (2009): Investigations sur les bas-fonds dans la Haute Vallée de l’Ouémé. In : Mulindabigwi, V., Gaiser , T. (eds.), Concepts et outils pour une gestion durable des ressources en eau. Book of abstracts, International Conference, Cotonou, 11 -12 March 2009. p.26.

92.  Gaiser, T., Kuhn, K., Enders, A., Gandonou, E., Judex, M., Hiepe, C., Diekkrüger, B. (2009): L’utilisation d’engrais peut améliorer la sécurité alimentaire et la stabilité des revenus agricoles au Bénin. In : Mulindabigwi, V., Gaiser , T. (eds.), Concepts et outils pour une gestion durable des ressources en eau. Book of abstracts, International Conference, Cotonou, 11 -12 March 2009. p.35.

93.  Gaiser, T, Paeth, H., Giertz, S., Kuhn, A., Thamm, H.-P., Judex, M., Gruber, I., Röhrig, J., Steup, G., Hiepe, C., Heuer, K.-O., Srivastava, A., Goldbach, H. (2009): Sécurité alimentaire au Bénin: Développement des systèmes de support à la prise de décision sur différentes échelles spatiales. In : Mulindabigwi, V., Gaiser , T. (eds.), Concepts et outils pour une gestion durable des ressources en eau. Book of abstracts, International Conference, Cotonou, 11 -12 March 2009. p.36.

94.  Srivastava, A, Kanninkpo, C., Gaiser, T. (2009): Reducing the effect of iron toxicity in lowland rice through bunding and fertilizer application. The Proceedings of the International Plant Nutrition Colloquium XVI. Paper 1053. http://repositories.cdlib.org/ipnc/xvi/1053

95.  Gaiser, T., Igue, A.M., Bakara, H., Sereke, F., Lange, F.-M., Stahr, K. (2009): Comparison of climate effects on crop productivity in Central Europe and West Africa. Berichte der Gesellschaft für Pflanzenbauwissenschaften 4: 55-59.

96.  Gaiser, T., Enders, A. Diekkrüger, B. (2009): Development of an Efficient Framework for Implementing Spatial Decision Support Systems in the GLOWA IMPETUS Project. In: Entscheidungsunterstützungssysteme und Datengrundlagen im Kontext von IWRM. Umweltforschungszentrum Leipzig, 18-19/5/2009, Book of Abstracts, p. 3. http://www.wasserressourcen-management.de/_media/IWRM_Themenworkshop_DSS_Abstractband.pdf

97.  Ahamidé, B., Gaiser, T., Agbossou, E., Printz, A. Götzinger, J., Hounsou, M. (2009) : Scénarios intégrés pour la planification stratégique des ressources en eau dans le bassin de l’Ouémé. In : Global Change in Africa - Projections, Mitigation and Adaptation. Book of Abstracts, Cologne 2-4/6/2009. p. 37.

98.  Igue, A.M., Gaiser, T, Weippert, H., Stahr, K. (2009) : Estimation of diffuse pollution with the soil and land information system SLISYS in the Oueme and Neckar basin. In : Global Change in Africa - Projections, Mitigation and Adaptation. Book of Abstracts, Cologne 2-4/6/2009. p. 113.

99.  Gandonou, E, Gaiser, T., Kuhn, A. (2009): Effects of tax exemption on fertiliser use in Benin. In : Global Change in Africa - Projections, Mitigation and Adaptation. Book of Abstracts, Cologne 2-4/6/2009. p. 60.

100.                     Srivastava, A., Dagbenonbakin, G.D., Gaiser, T. (2009): Effect of fertilization on Yam (Dioscorea rotundata) biomass production. In : Global Change in Africa - Projections, Mitigation and Adaptation. Book of Abstracts, Cologne 2-4/6/2009. p. 117.

101.                     Bakara, H., Billen, N., Gaiser, T., Stahr, K. (2009): Regionale GIS-gestützte ökologische Bewertung des Energiepflanzenanbaus in Baden-Württemberg mit Hilfe des Landnutzungsinformationssystems SLISYS-BW. In: DBG (ed.), Böden eine endliche Ressource. Proceedings of the annual meeting of the German Soil Science Society, Bonn, 2009. http://eprints.dbges.de/345/1/Bakara_DBG_2009.pdf

102.                     Billen, N., Othmanli, H., Konold, A., Angenendt, E., Bakara, H., Gaiser, T., Stahr, K. (2009): Wirkungen eines umweltgerechten Energiepflanzenanbaus auf Boden, Umwelt und Wirtschaftlichkeit: Möglichkeiten und Grenzen der Modellierung von Szenarien. In: DBG (ed.), Böden eine endliche Ressource. Proceedings of the annual meeting of the German Soil Science Society, Bonn, 2009. http://eprints.dbges.de/370/1/dbg2009-beitrag_IBS-Billen.pdf

103.                     Vashev, B., Gaiser, T., Mandal, A.K., Stahr, K. (2009): Verbreitung und Biomasseerzeugungspotential von salzbeeinflussten Böden in Indien. In: DBG (ed.), Böden eine endliche Ressource. Proceedings of the annual meeting of the German Soil Science Society, Bonn, 2009. http://eprints.dbges.de/465/1/Vashev_DBG2009.pdf.

104.                     Worou, N., Gaiser, T., Oikey, S., Goldbach, H. (2010): Model Comparison for Simulating Upland Rice Production in Small-holder Farming Systems in Benin: Steps in EPIC Evaluation on a Highly Weathered Soil (Ikenne, Nigeria). Proceedings of the International Conference “World Food System — A Contribution from Europe”. http://www.tropentag.de/2010/abstracts/full/1057.pdf

105.                     Abdel-Razek, M., Gaiser, T., Diekkrüger, B., Goldbach, H. (2010): Salinity Development During Three Decades in the Oasis of Ktoua, South Morocco. Proceedings of the International Conference “World Food System — A Contribution from Europe”. http://www.tropentag.de/2010/abstracts/full/1129.pdf

106.                     Gaiser, T., Judex, M., Igue, A.M., Hiepe, C. (2011): Impact of Reduced Fallow Availability on Crop Yields in Low Input Cropping Systems in West Africa. Proceedings of the International Conference “Development on the margin”, October 2011, Bonn, Germany. http://www.tropentag.de/links/Gaiser_dKvqQm27.pdf

107.                     Worou, N., Gaiser, T., Goldbach, H. (2011): Lowland Rice Growth and Productivity as Related to Landscape Position, Bunding and Fertiliser Application. Proceedings of the International Conference “Development on the margin”, October 2011, Bonn, Germany. http://www.tropentag.de/links/Worou_POLDzlBT.pdf

108.                     Abdel-Razek, M., Gaiser, T., Diekkrüger, B, Goldbach, H. (2011): Mitigation of Global Climate Change and Water Scarcity Impacts on Agriculture in Draa Oases, South East Morocco: Methodological Framework. Proceedings of the International Conference “Development on the margin”, October 2011, Bonn, Germany. http://www.tropentag.de/links/Abdel-Razek_btLlx0Fh.pdf

109.                     Gaiser, T., Perkons, U., Puschmann, D.U., Peth, S., Kautz, T., Pfeifer, J., Ewert, F., Horn R., Köpke, U. (2011): Erhöhter Wasserentzug aus dem Unterboden durch Sommerweizen nach einer Luzernevorfrucht. Proceedings of the bi-annual meeting of the German Soil Science Society, 3-9 September 2011, Berlin, Germany.

110.                     Vashev, B.; Inwersen, J.; Rathore, S.; Gaiser, T., Stahr, K. (2011): Abschätzung der elektrischen Leitfähigkeit im Sättigungsextrakt (ELe) aus der Leitfähigkeit der Boden-Wassersuspension (EL1:2) für versalzte Böden aus Südasien. Proceedings of the bi-annual meeting of the German Soil Science Society, 3-9 September 2011, Berlin, Germany.

111.                     Ramarohetra, J., Sultan, B., Baron, C., Gaiser, T., Gosset, M., Alcoba, M. (2012): To what extend can satellite rainfall estimates be used for crop yield prediction ? 4th international Conference on African Monsoon Multidisciplinary Analyses (AMMA), July 2-6, 2012, Toulouse, France. http://amma-conf2012.ipsl.fr/data/documents/PR2A_9_Ramarohetra.pdf

112.                     Abdel-Razek, M. Gaiser, T., Diekkrüger, B., Goldbach, H. (2012): Triticum aestivum Yield and Water-Use Efficiency in the Draâ Oases at South East Morocco: Irrigation and N-fertilizer Effects. Proceedings of the International Conference “Resilience of agricultural systems against crises”, 19-21 September 2012, Göttingen. http://www.tropentag.de/2012/abstracts/links/Abdel-Razek_CTpGDT0j.pdf.

113.                     Gaiser, T., Vanderborght, J., Javaux, M., Ewert, F. (2012): Modelling phosphorus acquisition from the sub-soil for different crops with specific consideration of bio-pores. Proceedings of the European Soil Science Conference, 2-7 July 2012, Bari, Italy.