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Dr. Martin C Rabenhorst

Professor

Professor

Environmental Science & Technology 0208 HJ Patterson Hall College Park, Maryland 20742
Univ. of MD, Dept ENST 1213 HJ Patterson Hall College Park, MD 20742

Mailing Address

Education

  • Ph.D.   1983, Texas A&M University
  • M.S.    1978, University of Maryland
  • B.S.    1975, University of Maryland

Research Focus

  • Genesis, morphology, and classification of hydromorphic soils
  • Pedogenesis and soil-landscape relations
  • Hydropedology of non-tidal wetlands and coastal marshes
  • Pedogenesis and resource inventory of subaqueous soils
  • Technology development for documenting reducing soil conditions

Teaching

ENST301/302/303 Field Soil Morphology I, II, III (1 Credit)  This is a field-oriented course that introduces students to the techniques used to (1) describe soil morphology, and site and profile characteristics, (2) make land use interpretations based on soil characteristics, and (3) classify soils. This class is designed to prepare students for the Regional Collegiate Soil Judging Contest and for students to gain experience in the description and interpretation of soils in the field.

ENST309 Advanced Field Soil Morphology (1 Credit)  This is a field-oriented course that provides advanced training for students in the techniques used to (1) describe soil morphology, and site and profile characteristics, (2) make land use interpretations based on soil characteristics, and (3) classify soils. This class is designed to prepare students for the National Collegiate Soil Judging Contest and for students to gain experience in the description and interpretation of soils in the field. Students will be exposed to a variety of soil landscapes and geology from outside of the northeastern U.S.

ENST424 Field Study in Soil Morphology (4 Credits)  The fundamentals of making morphological descriptions of soils, using standard techniques, terminology, and abbreviations of the National Cooperative Soil Survey. Given a regional perspective and reasonable assumptions regarding soil properties, students should become competent to classify soils which they have described in the field and also make interpretations concerning the suitability of soils for various potential uses.

ENST430 Wetland Soils (3 Credits)  The soils of wetlands including hydrology, chemistry, and genesis are discussed. Federal and regional guidelines for wetland soils are covered with an emphasis on validating interpretations through field observations.

ENST630 Advanced Wetland Soils (3 Credits)  The soils of wetlands including hydrology, biogeochemistry, and pedogenesis, including a focused discussion of current literature. Federal and regional guidelines for wetland soils are covered with an emphasis on validating interpretations through field observations.

ENST761 Methods in Pedological Investigations (4 Credits)  This is designed to equip students with analytical tools for soil microfabric and mineralogical analysis in order to understand soil properties and processes. A number of techniques will be discussed, but emphasis will be placed on micromorphology and x-ray diffractometry. Both theoretical and applied considerations will be covered, and students will gain substantial hands on experience in collecting and interpreting data germane to their research interests.

ENST798 Graduate Seminar (1 Credit)  Designed to provide a venue for interactive discussion between ENST graduate students and other members of the ENST community regarding thesis/dissertation research planned or conducted as part of the student’s graduate program.

Research

Genesis, morphology, and classification of hydromorphic soils

Pedogenesis and soil-landscape relations

Hydropedology of non-tidal wetlands and coastal marshes

Pedogenesis and resource inventory of subaqueous soils

Technology development for documenting reducing soil conditions

Publications on Pedogenesis/General Pedology

Rabenhorst, M.C., and J. E. Foss.  1981.  Soil and geologic mapping over mafic and ultramafic parent materials in Maryland.  Soil Sci. Soc. Am. J. 45:1156-1160.

Rabenhorst, M.C., D. S. Fanning, and J. E. Foss.  1982.  Regularly interstratified chlorite/vermiculite in soils over meta-igneous mafic rocks in Maryland.  Clays Clay Min. 30:156-158.

Rabenhorst, M.C., J. E. Foss, and D. S. Fanning.  1982.  Genesis of Maryland soils formed from serpentinite.  Soil Sci. Soc. Am. J. 46:607-616.

Rabenhorst, M.C., L. P. Wilding, and C. L. Girdner.  1984.  Airborne dust in the Edwards Plateau region of Texas.  Soil Sci. Soc. Am. J. 48:621-627.

Rabenhorst, M.C., and L. P. Wilding.  1984.  A rapid method to obtain carbonate-free residues from limestone and petrocalcic materials.  Soil Sci. Soc. Am. J. 48:216-219.

Rabenhorst, M.C., L. P. Wilding, and L. T. West.  1984.  Identification of pedogenic carbonates using stable carbon isotope and microfabric analyses.  Soil Sci. Soc. Am. J. 48:125-132.

Rabenhorst, M.C., and L. P. Wilding.  1986.  Pedogenesis on the Edwards Plateau, Texas: I.  Parent material identification and uniformity.  Soil Sci. Soc. Am. J. 50:678-687.

Rabenhorst, M.C., and L. P. Wilding.  1986.  Pedogenesis on the Edward Plateau, Texas: II.  Formation and occurrence of diagnostic subsurface horizons in a climosequence.  Soil Sci. Soc. Am. J. 50:687-692.

Rabenhorst, M.C., and L. P. Wilding.  1986.  Pedogenesis on the Edwards Plateau, Texas: III.  A new model for the formation of petrocalcic horizons.  Soil Sci. Soc. Am. J. 50:693-699.

Fanning, D. S., M.C. Rabenhorst, Leopold May, and D. P. Wagner. 1989. Oxidation State of iron in glauconite from oxidized vs reduced zones of soil-geological columns. Clays Clay Min. 37: 59-64.

West, L. T., R. L. Drees, L. P. Wilding, and M.C. Rabenhorst. 1988. Differentiation of pedogenic and lithogenic carbonate forms in Texas. Geoderma 43:271-287.

Rabenhorst, M.C. and D. S. Fanning. 1989. Pyrite and trace metals in glauconitic parent materials in Maryland.  Soil Sci. Soc. Am. J. 53:1791-1797.

Rabenhorst, M.C., L. T. West, and L. P. Wilding. 1991. Genesis of calcic and petrocalcic horizons in soils over carbonate rocks. In Occurrence, Characterization, and Genesis of Carbonate, Gypsum, and Silica Accumulations in Soils, SSSA Special Publication No. 26. pp61-74.

Miedema, R., C.J. Chartres, M.A. Courty, K. McSweeney, K. Oleschko, and M.C. Rabenhorst. 1994. Soil Micromorphology: Towards an Analytical and Quantitative Tool for Assessing Anthropogenic Influences on Soils. Proceedings of the 15th World Congress on Soil Science, Acapulco, Mexico. Vol 1:143-162.

Wagner, D. P., and M.C. Rabenhorst. 1994. Micromorphology of an Aquic Paleudult developed in clayey, kaolinitic, coastal plain sediments in Maryland, USA. In  A. J. Ringrose-Voase and G. S. Humphreys (eds) Soil Micromorphology: Studies in Management and Genesis.  Proceedings of the 9th Int. Working Meeting on Soil Micromorphology, July 12-17, 1992, Townsville, Australia. Developments in Soil Science 22. Elsevier. Amsterdam. pp.161-169.

Elless, M. P., and M.C. Rabenhorst. 1994. Hematite in the shales of the Triassic Culpeper Basin of Maryland. Soil Sci. 158:150-154.

Rabenhorst, M.C., and R. L. Hill. 1994. Micromorphological interpretations of strength characteristics in spodic horizons from the Atlantic Coastal Plain, USA. In  A. J. Ringrose-Voase and G. S. Humphreys (eds) Soil Micromorphology: Studies in Management and Genesis.  Proceedings of the 9th Int. Working Meeting on Soil Micromorphology, July 12-17, 1992, Townsville, Australia. Developments in Soil Science 22. Elsevier. Amsterdam. pp.855-863.

Rabenhorst, M.C. and D. Shields. 1996. Mineralogical determination for family placement: Our experience on the Maryland Coastal Plain. Soil Survey Horizons 37: 59-65.

Shaw, J. N. and M.C. Rabenhorst. 1997. The geomorphology, characteristics, and origin of the freshwater marl sediments in the Great Limestone Valley, Maryland, USA. Catena 30: 41-59.

Rabenhorst, M.C.  and J.N. Shaw. 1997. Micromorphological insights into the origin and pedogenesis of Holocene marls. pp 317-325. In S. Shoba, M. Gerasimova, and R. Miedema (eds.) Soil Micromorphology: Studies on Soil Diversity, Diagnostics, and Dynamics.  Proceed. 10th Intern. Working Meeting on Soil Micromorphology, July 8-13, 1996, Moscow, Russia. Pub. Wageningen.

Shaw, J. N., and M.C. Rabenhorst. 1999.  Pedogenic and morphological characteristics of marl derived soils in the ridge and valley province, Eastern United States. Soil Sci. 164:936-945.

Rubinstein, M.I., B.A. Needelman, D.M. Balduff, and M.C. Rabenhorst. 2003. LIDAR for subaqueous and terrestrial soil landscape analysis. In Proc. Terrain Data: Applications and Visualization, Terrain Data Conference 2003, Oct. 25–30, ASPRS and MAPPS. 11 pp.

Rabenhorst, M.C. 2004. The Factors of Soil Formation. Pp13-20. In Mid-Atlantic Hydric Soils Committee. 2004. A guide to hydric soils in the Mid-Atlantic Region, ver. 1.0. L.M. Vasilas and B.L. Vasilas (eds.). USDA, NRCS, Morgantown, WV. Available on CD and at <http://www.wv.nrcs.usda.gov/mlra/04_mayMidAtlSoils.pdf>.

Scott, M.L., B. A. Needelman, and M.C. Rabenhorst. 2007. Morphology and Characterization of Soils Formed in Marlboro Clay Regolith. Soil Science 172:233-241.         

Balduff, D. M., and M.C. Rabenhorst. 2007. Grain counting strategies for a more accurate assessment of soil mineralogy. Soil Survey Horizons 48: 80-84.

Vaughan, R.E., B.A. Needelman, P.J.A. Kleinman, and M.C. Rabenhorst. 2008.Morphology and Characterization of Ditch Soils at an Atlantic Coastal Plain Farm. Soil Sci. Soc. of Am. J. 72: 660-669.

Bourgault, R. R. and M.C. Rabenhorst, M.C. 2011. Genesis and Characterization of Manganiferous Soils in the Eastern Piedmont, USA. Geoderma 165: 84-94.

Rabenhorst, M.C. 2011. The Factors of Soil Formation. Pp17-24. In Mid-Atlantic Hydric Soils Committee. 2004. A guide to hydric soils in the Mid-Atlantic Region, ver. 2.0. L.M. Vasilas and B.L. Vasilas (eds.). USDA, NRCS, Morgantown, WV. Available on CD and at <https://prod.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052291.pdf>.

Bourgault, R. R. and M.C. Rabenhorst, M.C. 2012. Manganiferous Soils in Maryland: Regional Extent and Field-Scale Electromagnetic Induction Survey.  Soil Sci. Soc. Am. J. 76: 2128-2135.

Rossi, A.M. and M.C. Rabenhorst. 2016. Pedogenesis and landscape relationships of a Holociene age barrier island. Geoderma: 262:71-84   http://dx.doi.org/10.1016/j.geoderma.2015.08.004

Stolt, M.H., M.C. Rabenhorst, E.A. Ghabbour, and G. Davies. 2016. Soil Color and US Northeast Aquods. Soil Sci. Soc. Am. J. 80: 965-972. doi: 10.2136/sssaj2015.11.0404.

Rabenhorst, M.C. 2016. A Half Century of Changes in Soil Taxonomy. 2016. Soil Sci. Soc. Am. J. 80: 839-844. doi: 10.2136/sssaj2016.02.0046.

Wessel, B.M., J.C. Fiola, and M.C. Rabenhorst. 2017. Soil morphology, genesis, and monolith construction of an acid sulfate soil with silica-cementation in the US Mid-Atlantic Region.  Geoderma (special issue for 8th IASSC): Geoderma 308C: 260-269. https://doi.org/10.1016/j.geoderma.2017.03.023

Ruppert, D.E., B.A. Needelman, P.J.A. Kleinman, M.C. Rabenhorst,  B.Momen, and D.B. Wester. 2017. Hydrology and soil manipulations of iron-rich ditch mesocosms provide little evidence for phosphorus capture within the profile. J. Environ. Qual. 46: 596-604. DOI: 10.2134/jeq2016.10.0397

Galbraith, J.M., M. Stolt, M.C. Rabenhorst, and M. Ransom. 2018. Impact of fundamental changes to Soil Taxonomy. Manuscript TJPS-2017-0035.R1. South African J. of Plant and Soil. Published online: 22 Jan 2018.   https://doi.org/10.1080/02571862.2017.1419386

Rossi, A. M., and M.C. Rabenhorst. 2019.  Organic Carbon Dynamics in Soils of Mid-Atlantic Barrier Island Landscapes. Geoderma. 337: 1278-1290. https://doi.org/10.1016/j.geoderma.2018.10.028

Publications on Hydropedology

Stolt, M. H., and M.C. Rabenhorst.  1987.  Carolina Bays on Maryland's Eastern Shore: I.  Soil Characterization and Classification.  Soil Sci. Soc. Am. J. 51:394-398.

Stolt, M. H., and M.C. Rabenhorst.  1987.  Carolina Bays on Maryland's Eastern Shore: II.  Distribution and Origin.  Soil Sci. Soc. Am. J. 51:399-405.

Elless, M. P., M.C. Rabenhorst, and B. R. James. 1996. Redoximorphic features in soils of the Triassic Culpepper Basin. Soil Science 161: 58-69.

Stolt, M.H., and M.C. Rabenhorst. 1988. Characterization and origin of Delmarva Bay basin fill. pp. 263-268. In The Ecology and Management of Wetlands, Volume I: Ecology of Wetlands. D. D. Hook, et al. (eds) Croom Helm Pub., Timber Press, Portland, Oregon. 582pp.

Fanning, D S., M. L. Thompson, and M.C. Rabenhorst. 1992. Macro-Micro morphology of wet soils in relation to mottling models and soil classification. pp.106-112. In J. M. Kimble (ed). Proceedings of the Eighth International Soil Correlation Meeting (VIII ISCOM): Classification and Management of Wet Soils. October 6-21, 1990. Louisiana & Texas, USA.

Rabenhorst, M.C., G. Stoops, M. J. Kooistra, and C.C. Gutiérez. 1994. Wetland Habitats - Qualities Process and Attributes. Proceedings of the 15th World Congress on Soil Science, Acapulco, Mexico. Vol 6a: 281-299.

Elless, M. P., and M.C. Rabenhorst. 1994.  Micromorphological interpretation of redox processes in soils derived from Triassic redbed parent materials. In  A. J. Ringrose-Voase and G. S. Humphreys (eds) Soil Micromorphology: Studies in Management and Genesis. Proceedingsof the 9th Int. Working Meeting on Soil Micromorphology, July 12-17, 1992, Townsville, Australia. Developments in Soil Science 22. Elsevier. Amsterdam. pp.171-178.

Condron, M. A., and M.C. Rabenhorst. 1994. Micromorphology of spodic horizons in a Psamment - Aquod toposequence on the Atlantic coatal plain of Maryland, USA. In  A. J. Ringrose-Voase and G. S. Humphreys (eds) Soil Micromorphology: Studies in Management and Genesis.  Proceedings of the 9th Int. Working Meeting on Soil Micromorphology, July 12-17, 1992, Townsville, Australia. Developments in Soil Science 22. Elsevier. Amsterdam. pp.179-186.

Rabenhorst, M.C. and D.L. Lindbo. 1998. Micromorphology of Sandy Epipedons along an Upland-Wetland Transect. Pp 95-105. In SSSA Special Pub.  #54, Quantifying Soil Hydromorphology, Proceedings of Symposium held November 4, 1996, at the annual meetings of the SSSA.

Lindbo, D.L.  M.C. Rabenhorst, and F.E. Rhoton. 1998. Quantifying hydric soil indicators with soil color. Pp 195-208. In SSSA Special Pub.  #54, Quantifying Soil Hydromorphology, Proceedings of Symposium held November 4, 1996, at the annual meetings of the SSSA.

Galusky, L.P. and M.C. Rabenhorst. 1998. Toward development of quantitative soil morphological indicators of water table behavior. Pp 77-93. In SSSA Special Pub.  #54, Quantifying Soil Hydromorphology, Proceedings of Symposium held November 4, 1996, at the annual meetings of the SSSA.

Tangren, S.A., D.S. Fanning, K.L. Prestegaard, and M.C. Rabenhorst. 1998. Quantitative analysis of hydromorphic features along a Maryland coastal plain hydrosequence. Pp 173-193.  In SSSA Special Pub.  #54, Quantifying Soil Hydromorphology, Proceedings of Symposium held November 4, 1996, at the annual meetings of the SSSA.

Rabenhorst, M.C. and D. Swanson. 2000. Histosols. pp E183-E209. In M. E. Sumner (ed) Handbook of Soil Science. CRC Press.

Rabenhorst, M.C. 2004. Pedogenesis of Hydric Soils - Hydropedology. Pp 21-36. In Mid-Atlantic Hydric Soils Committee. 2004. A guide to hydric soils in the Mid-Atlantic Region, ver. 1.0. L.M. Vasilas and B.L. Vasilas (eds.). USDA, NRCS, Morgantown, WV. Available on CD and at <http://www.wv.nrcs.usda.gov/mlra/04_mayMidAtlSoils.pdf>.

Robinette, C. E., M.C. Rabenhorst, and L. M. Vasilas. 2004. Identifying Problem Hydric Soils in the Mid-Atlantic Region. Pp 85-104. In Mid-Atlantic Hydric Soils Committee. 2004. A guide to hydric soils in the Mid-Atlantic Region, ver. 1.0. L.M. Vasilas and B.L. Vasilas (eds.). USDA, NRCS, Morgantown, WV. Available on CD and at <http://www.wv.nrcs.usda.gov/mlra/04_mayMidAtlSoils.pdf>.

Rabenhorst, M.C. and *K. L. Castenson. 2005. Temperature Effects on Iron Reduction in a Hydric Soil. Soil Science 170: 734-742.

Rabenhorst, M.C. 2005. Biologic zero: A soil temperature concept. Wetlands 25: 616-621.

Vaughan, K. L., M.C. Rabenhorst, and B.A. Needelman. 2009. Saturation and temperature effects on the development of reducing conditions in soils. Soil Sci. Soc. Am. J. 73:663-667.

Rabenhorst, M.C. and M. H. Stolt. 2012. Field Estimations of Soil Organic Carbon. Soil Sci. Soc. Am. J. 76: 1478-1481.

Kolka, R. K., M.C. Rabenhorst, and D. Swanson. 2011.  Histosols.  Section V. Chapter 33 Section 2, pp 33.8 - 33.29, In Pan Ming Huang, Yuncong Li, Malcolm E. Sumner (Eds) Handbook of Soil Science. 2nd Edition. CRC Press.

Rabenhorst, M.C. 2011. Pedogenesis of Hydric Soils - Hydropedology. Pp 25-40. In Mid-Atlantic Hydric Soils Committee. 2011. A guide to hydric soils in the Mid-Atlantic Region, ver. 2.0. L.M. Vasilas and B.L. Vasilas (eds.). USDA, NRCS, Morgantown, WV. Available on CD and at <https://prod.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052291.pdf>.

Robinette, C. E., M.C. Rabenhorst, and L. M. Vasilas. 2011. Identifying Problem Hydric Soils in the Mid-Atlantic Region. Pp 90-108. In Mid-Atlantic Hydric Soils Committee. 2011. A guide to hydric soils in the Mid-Atlantic Region, ver. 2.0. L.M. Vasilas and B.L. Vasilas (eds.). USDA, NRCS, Morgantown, WV. Available on CD and at <https://prod.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052291.pdf>.

Ruppert, David E., Brian A. Needelman, Martin C. Rabenhorst, and David B. Wester. 2014. Drainage Ditch Soil Morphology and Mineralogy Influenced by Hydrologic and Soil Treatments. Soil Horizons 55:    doi:10.2136/sh14-01-0003.

Rossi, A. M. and M.C. Rabenhorst. 2015. Hydric Soil Field Indicators for use in Mid-Atlantic Barrier Island Landscapes. Soil Sci. Soc. Am. J. 79: 328-342.  doi:10.2136/sssaj2014.08.0317

Fenstermacher, D. E., M.C. Rabenhorst, M. W. Lang, G. W. McCarty, B. A. Needelman. 2014. Distribution, Morphometry, and Land Use of Delmarva Bays. Wetlands. 34: 1219-1228. 10.1007/s13157-014-0583-5

Ducey, T.F.,  J.O. Miller, M.W. Lang, A.A Szogi, P.G. Hunt, D.E. Fenstermacher, M.C. Rabenhorst, and G.W. McCarty. 2015. A Conservation Effects Assessment Project investigation of physicochemical conditions, denitrification rates, and nosZ abundance in North Carolina Coastal Plain wetlands under natural, drained, and hydrologically restored conditions.  J. Environ. Qual. 44(3):1011-1022  doi:10.2134/jeq2014.09.0403

Fenstermacher, D. E., M.C. Rabenhorst, M. W. Lang, G. W. McCarty, and B. A. Needelman. 2016. Carbon in Natural, Cultivated, and Restored Depressional Wetlands in the Mid-Atlantic Coastal Plain. J. Environ. Qual. 45: 743-50. doi: 10.2134/jeq2015.04.0186;

Sharifi, A., M. W. Lang, G. W. McCarty, A. M. Sadeghi, S. Lee, H. Yen, M.C. Rabenhorst J. Jeong and I.-Y. Yeo. 2016. Improving Model Prediction Reliability through Enhanced Representation of Wetland Soil Processes and Constrained Model Auto Calibration – A Paired Watershed Study. Journal of Hydrology 541: (B) 1088–1103.

Castañeda, Carmen, Estela Luna, and Martin Rabenhorst. 2017. Reducing conditions in soils of Gallocanta Lake, northeast Spain. European J. Soil Sci. 68: 249-258.  http://dx.doi.org/10.1111/ejss.12407Fschmel

Mack, Sara C., Jacob F. Berkowitz, and Martin C. Rabenhorst. 2018. Improving hydric soil identification in areas containing problematic red parent materials:  a nationwide collaborative mapping approach. Wetlands 39: 685–703. https://doi.org/10.1007/s13157-018-1114-6.

Maietta, C.E., Z.A. Bernstein, J.R. Gaimaro, J.S. Buyer, M.C. Rabenhorst, V.L. Monsaint-Queeney, A.H. Baldwin, and S.A. Yarwood. 2019.  Aggregation but not organo-metal complexes contributed to C storage in tidal freshwater wetland soils. Soil Sci. Soc. Am. J. 83(1): 252-265.  doi:10.2136/sssaj2018.05.0199   https://dl.sciencesocieties.org/publications/sssaj/abstracts/83/1/252?search-result=1

Mack, S. C., M. C. Rabenhorst, and J. F. Berkowitz. 2019. Understanding the Inhibition of Color Change in Problematic Red Parent Material Hydric Soils.  Soil Sci. Soc. Am. J. 83: 838-847. doi:10.2136/sssaj2018.10.0390.

Fiola, J., M.C. Rabenhorst, +K. Rankin, +C. Seitz, +E. Scaduto. 2020. Soil Biogeochemistry of the Capillary Fringe in Laboratory Mesocosms with Contrasting Soil Textures. Soil Sci. Soc. Am. J. Accepted.

Goldman, Margaret, Brian Needelman, Martin Rabenhorst, Megan Lang, Gregory McCarty, and Philip King. 2020. Digital soil mapping in a low-relief landscape to support wetland restoration decisions. Geoderma XX: zzz-zzz. Accepted.

Publications on Tidal Marsh Soils

Darmody, R. G., M.C. Rabenhorst, and J. E. Foss.  1976.  Bucket auger modification for tidal marsh sampling.  Soil Sci. Soc. Am. J. 40:321-322.

Haering, K. C., M.C. Rabenhorst, and D.S. Fanning. 1989. Sulfur Speciation in Chesapeake Bay Tidal Marsh Soils. Soil Sci. Soc. Am. J. 53: 500-505.

Griffin, T. M. and M.C. Rabenhorst. 1989.  Processes and rates of pedogenesis in some Maryland tidal marsh soils. Soil Sci. Soc. Am. J. 53: 862-870.

Rabenhorst, M.C., and K. C. Haering. 1989. Soil Micromorphology of a Chesapeake Bay Tidal Marsh: Implications for Sulfur Accumulation. Soil Sci. 147:339-347.

Griffin, T. M., M.C. Rabenhorst and D. S. Fanning. 1989. Iron and trace metals in tidal marsh soils of the Chesapeake Bay. Soil Sci. Soc. Am. J. 53: 1010-1019.

Rabenhorst, M.C. 1990. Micromorphology of induced iron sulfide formation in a Chesapeake Bay (USA) Tidal Marsh. In L. A. Douglas (ed.) Micromorphology: A basic and applied science. Proceedings of the 8th Int. Working Meeting on Soil Micromorphology, July 10-15, 1988, San Antonio, TX. Elsevier, Amsterdam. pp 303-310.

Stolt, M. H., and M.C. Rabenhorst. 1991. Micromorphology of argillic horizons in an upland/tidal marsh catena. Soil Sci. Soc. Am. J. 55:443-450.

Rabenhorst, M.C. and B. R. James. 1992.  Iron sulfidization in tidal marsh soils, p203-217. In R. W. Fitzpatrick and H. C. W. Skinner (eds.)  Biomineralization Processes of Iron and Manganese in Modern and Ancient Environments. Catena Supplement No. 21, West Germany.

Rabenhorst, M.C. 1995. Carbon storage in tidal marsh soils. pp 93-103. In R. Lal, J. Kimble, E. Levine, and B.A. Stewart (eds.) Soils and Global Change. Proceedings of the International Soil Symposium on Greenhouse Gases and Carbon Sequestration. Columbus, Ohio. April 5-9, 1993. Lewis Publishers, CRC, Boca Raton.

Rabenhorst, M.C. 1997. The chrono-continuum: An approach to modeling pedogenesis in marsh soils along transgressive coastlines.  Soil Science 162: 2-9.

Hussein, A. H. and M.C. Rabenhorst. 1999.  Variability of properties used as differentiating criteria in tidal marsh soils. Soil Sci. 164: 48-56.

Hussein, A. H., and M.C. Rabenhorst. 1999. Modeling of sulfur sequestration in coastal marsh soils. Soil. Sci. Soc. Am. J. 63:1954-1963.

Rabenhorst, M.C. 2000. Ch. 13. Soils of tidal and fringing wetlands. Pp. 301-315. in Richardson, J.L., and M.J. Vepraskas (eds.). Wetland Soils: Their Genesis, Morphology, Hydrology, Landscapes, and Classification. CRC Press, Boca Raton, FL.

Hussein, A. H., and M.C. Rabenhorst.  2001. Tidal Inundation of Transgressive Coastal Areas: Pedogenesis of Salinization and Alkalinization. Soil Sci. Soc. Am J. 65:536-544.

Hussein, A. H., and M.C. Rabenhorst.  2001. Modeling the Impact of Tidal Inundation on Submerging Coastal Landscapes of  the Chesapeake Bay. Soil Sci. Soc. Am J. 65:932-941.

Hussein, A. H., and M.C. Rabenhorst.  2002.   Modeling of nitrogen sequestration in coastal marsh soils. Soil. Sci. Soc. Am. J. 66:324-330.

Hussein, A.H., M. Tucker, and M.C. Rabenhorst. 2004. Modeling of carbon sequestration in coastal marsh soils. Soil Sci. Soc. Am. J. 68:1786-1795.

Rabenhorst, M.C. and B. A. Needelman. 2015. Ch. 13. Soils of tidal wetlands. Pp. 347-364. in Vepraskas, M. J. and C. B. Craft (eds.). Wetland Soils: Their Genesis, Morphology, Hydrology, Landscapes, and Classification, 2nd Edition. CRC Press, Boca Raton, FL.

Publications on Subaqueous Soils

Demas, G. P., M.C. Rabenhorst, and J. C. Stevenson. 1996. Subaqueous Soils: A pedological approach to the study of shallow water habitats. Estuaries 19: 229-237.

Demas, G. P., and M.C. Rabenhorst. 1998. Subaqueous soils: a resource inventory protocol. Proceedings of the 16th World Congress on Soil Science, Montpellier, France. August 20-26,1998. Sym #17, on CD. Published by the International Soil Science Society (ISSS).

Demas, G. P., and M.C. Rabenhorst. 1999. Subaqueous soils: pedogenesis in a submersed environment. Soil Sci. Soc. Am J. 63: 1250-1257.

Demas, G. P., and M.C. Rabenhorst. 2001. Factors of Subaqueous Soil Formation: a System of Quantitative Pedology for Submersed Environments. Geoderma. 102:189-204.                      

Demas, S.Y., A.M. Hall, D.S. Fanning, M.C. Rabenhorst, E.K. Dzantor. 2004. Acid sulfate soils in dredged materials from tidal Pocomoke Sound in Somerset County, MD, USA. Aust. J. Soil Res. 42:537-545. 

Stolt, M. H. and M.C. Rabenhorst. 2011. Subaqueous Soils.  Section V. Chapter 36. Pp 36.1-36.14   In Pan Ming Huang, Yuncong Li, Malcolm E. Sumner (Eds) Handbook of Soil Science. 2nd Edition. CRC Press.

Rabenhorst, M.C. and M. H. Stolt. 2012. Subaqueous Soils: Pedogenesis, mapping, and applications.  Ch. 6. Pps 173 – 204. In H. Lin (Ed) Hydropedology: Synergistic Integration of Soil Science and Hydrology. 

Kristensen, E. and M.C. Rabenhorst. 2015. Do marine rooted plants grow in sediment or soil? A critical appraisal on definitions, methodology and communication   Earth-Science Reviews.  145: 1–8. http://dx.doi.org/10.1016/j.earscirev.2015.02.005

Wessel, B.M. and M.C. Rabenhorst. 2017. Identification of sulfidic materials in the Rhode River subestuary of the Chesapeake Bay. Geoderma (special issue for 8th IASSC): Geoderma 308C: 215-225 https://doi.org/10.1016/j.geoderma.2017.07.025

Publications on Acid Sulfate Soils

Fanning, D. S., P. A. Snow, M.C. Rabenhorst and M. A. El-Desoky.  1988.  Evidence of eluviation-illuviation of sulfur and heavy metals in recent Baltimore Harbor (MD) dredged materials.  Proceedings of Third International Acid Sulphate Soils Symposium (Dakar, Senegal), 1986. International Land Reclamation Institute Pub. No. 44, pp38-48, Wageningen, The Netherlands.

Fanning, D. S. and M.C. Rabenhorst. 1990. Micromorphology of acid sulfate soils in Baltimore Harbor dredged materials. In L. A. Douglas (ed.) Micromorphology: A basic and applied science.  Proceedings of the 8th Int. Working Meeting on Soil Micromorphology, July 10-15, 1988, San Antonio, TX. Elsevier, Amsterdam. pp 279-288.

Rabenhorst, M.C., B. R. James, and J. N. Shaw. 1992. Evaluation of potential wetland substrates for optimizing sulfate reduction. pp 90-97 In Achieving Land Use Potential Through Reclamation. Proceedings of the 9th Annual National Meeting of the American Society for Surface Mining and Reclamation. June 14-18, 1992. Duluth, MN.

Rabenhorst, M.C., B. R. James, M. C. Magness, and J. N. Shaw. 1993. Iron removal from acid mine drainage in wetlands by optimizing sulfate reduction. pp. 678-684. In The Challenge of integrating Diverse Perspectives in Reclamation. Proceedings of the 10th Annual National Meeting of the American Society for Surface Mining and Reclamation. Spokane, Washington, May 16-19, 1993.

Fanning, D. S. M.C. Rabenhorst, and G. Bigham. 1993. Colors of acid sulfate soils. pp. 91-108. In G. Bigham and E. Ciolkosz (eds) SSSA Special Publication No. 31. Madison, WI.

Fanning, D. S., M.C. Rabenhorst, S. N. Burch, and K. R. Islam. 2002. Sulfide and Sulfate Minerals: Environmental Aspects.   pp 229-260. In J.B. Dixon and D.G. Schulze (eds) Soil Mineralogy with Environmental Applications, SSSA Book Series #7, Madison, WI.

Rabenhorst, M.C., and D. S. Fanning. 2002. Acid Sulfate Soils - Problems. Pp 23 - 26. In Encyclopedia of Soil Science. Marcel Dekker.  Published online. http://www.dekker.com/servlet/product/productid/E-ESS

Rabenhorst, M.C., D. S. Fanning, and S. N. Burch. 2002. Acid Sulfate Soils - Formation. Pp 14 - 18. In Encyclopedia of Soil Science. Marcel Dekker.  Published online. http://www.dekker.com/servlet/product/productid/E-ESS

Fanning, D. S., Cary Coppock, Z. W. Orndorff, W. L. Daniels. M.C. Rabenhorst. 2004. Upland active acid sulfate soils from construction of new Stafford County, Virginia, USA, Airport. Aust. J. Soil Res. 42:527-536.

Rabenhorst, M.C. and *T. M. Valladares. 2005.  Estimating the depth to sulfide-bearing materials in upper cretaceous sediments in landforms of the Maryland Coastal Plain. Geoderma. 126:101-116.

Fanning, D. S., and M.C. Rabenhorst. 2008.  Rationale for updating the definitions of sulfidic materials and the sulfuric horizon in Soil Taxonomy and proposed revised definitions. pp.53-61. In: Lin, C., Huang, S., Li, Y. (Eds.). Proceedings of the Joint Conference of the 6th International Acid Sulfate Soil Conference and the Acid Rock Drainage Symposium. Guangdong Science and Technology Press, Guangzho , China.           

Fanning, D. S., and M.C. Rabenhorst. 2008.  Acid sulfate soil issues raised by the 2006 World Congress of Soil Science acid sulfate soils tour in the U.S. Mid-Atlantic region. pp. 48-52. In: Lin, C., Huang, S., Li, Y. (Eds.). Proceedings of the Joint Conference of the 6th International Acid Sulfate Soil Conference and the Acid Rock Drainage Symposium. Guangdong Science and Technology Press, Guangzhou , China.

Fanning, D. S., M.C. Rabenhorst, D. M. Balduff, D. P. Wagner, R. S. Orr, P. K. Zurheide. 2010. An acid sulfate perspective on landscape/seascape soil mineralogy in the U. S. Mid-Atlantic region. Geoderma 154: 457-464.

Fanning, Delvin, Martin Rabenhorst, and Robert Fitzpatrick. 2017. Historical developments in the understanding of acid sulfate soils. Geoderma (special issue for 8th IASSC): Geoderma 308C: 191-206. https://doi.org/10.1016/j.geoderma.2017.07.006

Rabenhorst, Martin, W. Lee Daniels, and Robert Fitzpatrick. 2017. 8th International Acid Sulfate Soil Conference (Preface to the Special Issue from the 8th IASSC).  Geoderma 308C: 187-190. https://doi.org/10.1016/j.geoderma.2017.09.022

Wessel, B.M., M.J. Levin, J.M. Galbraith, D.S. Fanning, and M.C. Rabenhorst. 2017. Soil Taxonomy proposals for acid sulfate soils and subaqueous soils raised by the 8th International Acid Sulfate Soils Conference. South African J. of Plant and Soil. Published online:  https://doi.org/10.1080/02571862.2017.1387820

Publications on Technology/Methods (including IRIS)

Rabenhorst, M.C. 1988. Determination of organic and carbonate carbon in calcareous soils using dry combustion.  Soil Sci. Soc. Am. J. 52:965-969.

James, B. R., M.C. Rabenhorst, and G. A. Frigon. 1992. Phosphorus sorption by peat and sand amended with iron oxides or steel wool.  Res. J. Water Poll. Control Fed. 64:699-705.

Rabenhorst, M.C., and +S. Parikh. 2000.  Propensity of soils to develop redoximorphic color changes. Soil Sci. Soc. Am. J. 64: 1904-1910.

Castenson, K. L. and M.C. Rabenhorst. 2006. Indicator of reduction in soil (IRIS):  Evaluation of a new approach for assessing reduced conditions in soil. Soil Sci. Soc. Am. J 70: 1222-1226.

Rabenhorst, M.C. and S. N. Burch. 2006.  Synthetic Iron Oxides as an Indicator of Reduction in Soils (IRIS). Soil Sci. Soc. Am. J. 70: 1227-1236

Rabenhorst, M.C., Douglas W. Ming, Richard V. Morris, and D. C. Golden. 2008. Synthesized Iron Oxides Used as a Tool for Documenting Reducing Conditions in Soils. Soil Sci. 173: 417-423.

Rabenhorst, M.C., *R. R. Bourgault, and B. R. James. 2008. Iron(III) (Hydr)Oxide Reduction in Simulated Wetland Soils: Mineralogical composition of IRIS paints. Soil Sci. Soc. Am. J. 72: 1838–1842.

Rabenhorst, M. C. 2008. Protocol for Using and Interpreting IRIS Tubes. Soil Survey Horizons 49: 74-77.

Rabenhorst, M.C., W. D. Hively, and B. R. James. 2009. Measurements of Soil Redox Potential. Soil Sci. Soc. Am. J. 73: 668-674   . 

Rabenhorst, M.C. 2009. Making Soil Eh Measurements Using Multimeters.  Soil Sci. Soc. Am. J. 73:2198-2201.

Rabenhorst, M.C., J. P. Megonigal, and J. Keller. 2010. Synthetic iron oxides for documenting sulfide in marsh porewater. Soil. Sci. Soc. Am. J. 74:1383-1388.

Rabenhorst, M.C. 2010. Visual Assessment of IRIS Tubes in Field Testing for Soil Reduction. Wetlands 30:847–852.

Rabenhorst, M.C. 2012. Simple and Reliable Approach for Quantifying IRIS Tube Data. Soil Sci. Soc. Am. J. 76: 307-308.

Rabenhorst, M.C. 2013. Using Synthesized Iron Oxides as an Indicator of Reduction in Soils. Pp 723-740. In R. DeLaune, R. Reddy, C. R. Richardson, and J. P. Megonigal,  (Eds). Methods in Biogeochemistry of Wetlands. Soil Science Society of  America Book Series No. 10, Madison, WI.

Vasilas, B., M. Rabenhorst, J. Fuhrmann, A. Chirnside, S. Inamdar. 2013. Wetland Biogeochemistry Techniques. Pp 354 – 442.  In J. T. Anderson and C. A. Davis (eds.) Wetland Techniques. Volume 1: Foundations. Springer Pub. Published as an open E book. http://fwf.ag.utk.edu/mgray/publications/WetlandTechniquesVol1.pdf

Megonigal, J. P. and M.C. Rabenhorst.  2013. Reduction–Oxidation Potential and Oxygen. Pp 71-86. In R. DeLaune, R. Reddy, C. R. Richardson, and J. P. Megonigal,  (Eds). Methods in Biogeochemistry of Wetlands. Soil Science Society of  America Book Series No. 10, Madison, WI.

Rabenhorst, M.C., +M. M. Matovich, A. M. Rossi*, and D. E. Fenstermacher*. 2014. Visual Assessment and Interpolation of Low Chroma Soil Colors.  Soil Sci. Soc. Am. J. 78: 567-570. doi:10.2136/sssaj2013.08.0347 

Rabenhorst, M.C., A. Schmehling, J. A. Thompson, D. R. Hirmas, R. C. Graham, and A. M. Rossi. 2015. Reliability of Soil Color Standards.  Soil Sci. Soc. Am. J. Soil Sci. Soc. Am. J. 79: 193-199. doi:10.2136/sssaj2014.10.0401

Rabenhorst, M.C. and +K. A Persing. 2017. A Synthesized Manganese Oxide for Easily Making Durable Mn-Coated IRIS Tubes. Soil Sci. Soc. Am. J. 81:233–239.  doi: 10.2136/sssaj2016.10.0348

Rabenhorst, M.C. and J. Post. 2018. Manganese Oxides for Environmental Assessment. Soil Sci. Soc. Am. J.  82:509-518  doi:10.2136/sssaj2017.08.0256. 

Rabenhorst, M.C. 2018. A System for Making and Deploying Oxide-Coated Plastic Films for Environmental Assessment of Soils. Soil Sci. Soc. Am. J. 82:1301-1307  doi: 10.2136/sssaj2018.05.0178.

Park, C.E. and M.C. Rabenhorst. 2018.  Assessing New Developments in IRIS Technology. Wetland Science and Practice 35:324-327.

Duball, C. E., K. L. Vaughan, J. F. Berkowitz, M. C. Rabenhorst, and C. M. VanZomeren. 2020. Iron monosulfide identification: Field techniques to provide evidence of reducing conditions. Soil Sci. Soc. Am J. 84. Xxx-xxx. Accepted.

Rabenhorst, M. C., +A. Buchanan, +E. Morozov, +J. Shay, and *S. C. Mack. 2020. Field Test for Identifying Problematic Red Parent Materials. Soil Sci. Soc. Am J. 84. Xxx-xxx. Accepted https://doi.org/10.1002/saj2.20044

Miscellaneous Publications

Sverdrup, H., P. Warfvinge, M. Rabenhorst, A. Janicky, R. Morgan, M. Bowman. 1992. Critical loads and steady-state chemistry for streams in the state of Maryland. Environ. Pollut. 77:195-203.

Pachepsky, Ya., V. Yakovchenko, M.C. Rabenhorst, C. Pooley, and L. J. Sikora. 1997. Effect of long-term management practices on soil pore surface fractal parameters derived from micromorphological data. Geoderma 74: 305-319.

Cavigelli, M. A., L. L. Lengnick, J. S. Buyer, D. Fravel, . Handoo, G. McCarty, P. Millner, L. Sikora, S. Wright, B. Vinyard, M. Rabenhorst. 2005. Landscape level variation in soil resources and microbial properties in a no-till corn field. Applied Soil Ecol. 29: 99-123.

Hartemink, A. E., M. R. Balks, Z. S. Chen, P. Drohan, D. Field, P. Krasilnikov, D. J. Lowe, M. Rabenhorst, K. van Rees, P. Schad, L. A. Schipper, M. Sonneveld, and C. Walter.  2013. The joy of teaching soil science.  Geoderma  217-18: 1-9.

Sharifi, Amirreza, Haw Yen, Carlington W. Wallace, Gregory McCarty, Wade Crow, Bahram Momen, Megan W. Lang, Ali Sadeghi, Sangchul Lee, Judith Denver, Martin C. Rabenhorst. 2017. Effect of Water Quality Sampling Approaches on Nitrate Load Predictions of a Prominent Regression-based Model. Water 9:895-909. https://doi:10.3390/w9110895

Lee, Sangchul, Gregory W. McCarty, Glenn Moglen, Megan W. Lang, Ali M. Sadeghi, Timothy R. Greene, In-Young Yeod, and Martin C. Rabenhorst. 2018. Effects of subsurface soil characteristics on wetland-groundwater interaction in the Coastal Plain of the Chesapeake Bay watershed. Hydrological Processes. 33:305–315. https://onlinelibrary.wiley.com/doi/epdf/10.1002/hyp.13326

Sharifi, Amirreza, Sangchul Lee, Gregory W. McCarty, Megan W. Lang, Jaehak Jeong, Ali M. Sadeghi, Martin C. Rabenhorst. 2019. Enhancement of Agricultural Policy/Environment eXtender (APEX) Model to Assess Effectiveness of WetlandWater Quality Functions. Water 11:606. https://www.mdpi.com/2073-4441/11/3/606

Lee, Sangchul, Haw Yen c, In-Young Yeo, Glenn E. Moglen, Martin C. Rabenhorst, Gregory W. McCarty. 2020. Use of multiple modules and Bayesian Model Averaging to assess structural uncertainty of catchment-scale wetland modeling in a Coastal Plain landscape. J. Hydrology. Accepted.