@misc{FischerVesteWieheetal., author = {Fischer, Thomas and Veste, Maik and Wiehe, Wolfgang and Lange, Philipp}, title = {How biological crusts are stabilizing the soil surface? The development of organo-mineral interactions in the initial phase}, series = {EGU General Assembly 2009, Vienna, Austria, 19 - 24 April 2009}, journal = {EGU General Assembly 2009, Vienna, Austria, 19 - 24 April 2009}, publisher = {European Geophysical Society}, address = {Katlenburg-Lindau}, language = {en} } @inproceedings{FischerVesteWieheetal., author = {Fischer, Thomas and Veste, Maik and Wiehe, Wolfgang and Lange, Philipp}, title = {Linking microstructural and spectroscopic analysis of biological soil crusts - investigation of organo-mineral interactions}, series = {6th International Symposium on Ecosystem Behaviour BIOGEOMON 2009}, booktitle = {6th International Symposium on Ecosystem Behaviour BIOGEOMON 2009}, editor = {Ukonmaanaho, Liisa and Nieminen, Tiina Maileena and Starr, Michael}, publisher = {Finnish Forest Research Institut}, address = {Vantaa, Finland}, isbn = {978-951-40-2177-0}, pages = {S. 412}, language = {en} } @misc{DuemigVesteHagedornetal., author = {D{\"u}mig, Alexander and Veste, Maik and Hagedorn, Frank and Fischer, Thomas and Lange, Philipp and Spr{\"o}te, Roland and K{\"o}gel-Knabner, Ingrid}, title = {Biological soil crusts on initial soils: organic carbon dynamics and chemistry under temperate climatic conditions}, series = {Biogeosciences Discussion}, volume = {10}, journal = {Biogeosciences Discussion}, number = {1}, issn = {1810-6285}, pages = {851 -- 894}, language = {en} } @misc{DuemigVesteHagedornetal., author = {D{\"u}mig, Alexander and Veste, Maik and Hagedorn, Frank and Fischer, Thomas and Lange, Philipp and Spr{\"o}te, Roland and K{\"o}gel-Knabner, Ingrid}, title = {Organic matter from biological soil crusts induces the initial formation of sandy temperate soils}, series = {Catena}, volume = {122}, journal = {Catena}, doi = {10.1016/j.catena.2014.06.011}, pages = {196 -- 208}, abstract = {Different development stages of algae-dominated and moss-dominated biological soil crusts (BSCs) were sampled on a natural sand dune (b17 years old) and on an experimental sand dune (b8 years old) along a catena, including gradients of vegetation cover, location on the slope, as well as composition and thickness of BSC organisms in northeastern Germany. The accumulation of BSC-derived organic carbon (OC)was determined for bulk materials and fractions less than 63 μm. The OC composition was characterized by solid-state 13C NMR spectroscopy and the carbohydrate-C signature. 14C contents were determined to assess the origin and dynamics of OC. From the radiocarbon contents, two OC pools were differentiated: recent BSC-derived and lignite-derived "old" OC. Downward movement of OC into the underlying substratewas found only undermoss-dominated BSCs at the old sand dune. BSC-derived OC was mainly composed of carbohydrate-C and, to a lesser extent, alkyl C and N-alkyl C, with considerably higher contributions of alkyl C in the young dune, indicating differences in the composition of extracellular polymeric substances produced by the BSCs with age. This is consistent with higher proportions of water-soluble OC of moss-dominated BSCs at the old dune, which is leached in the underlying substrate and initiates soil formation. Because of the channeling effect of mosses, OC depth translocation along with suspended colloidal substances contribute to OC accumulation in substrates.}, language = {en} } @inproceedings{FischerVesteEiseleetal., author = {Fischer, Thomas and Veste, Maik and Eisele, Andreas and Bens, Oliver and Spyra, Wolfgang and H{\"u}ttl, Reinhard F.}, title = {High resolution mapping of Normalized Difference Vegetation Indices (NDVI) of biological soil crusts}, series = {EGU General Assembly 2012, held 22-27 April, 2012 in Vienna}, booktitle = {EGU General Assembly 2012, held 22-27 April, 2012 in Vienna}, publisher = {European Geophysical Society}, address = {Katlenburg-Lindau}, language = {en} }