@misc{SproeteFischerVesteetal., author = {Spr{\"o}te, Roland and Fischer, Thomas and Veste, Maik and Raab, Thomas and Wiehe, Wolfgang and Lange, Philipp and Bens, Oliver and H{\"u}ttl, Reinhard F.}, title = {Biological topsoil crusts at early successional stages on recultivated post-mining sites in Brandenburg, NE Germany}, language = {en} } @misc{KopkowLangeSchmittetal., author = {Kopkow, Christian and Lange, Thomas and Schmitt, Jochen and Petzold, Thomas}, title = {Physiotherapeutische Versorgungssituation in Deutschland von 2004 bis 2014. Analyse des Verordnungsverhaltens bei Versicherten der Gesetzlichen Krankenversicherung}, series = {Das Gesundheitswesen}, volume = {79}, journal = {Das Gesundheitswesen}, number = {03}, issn = {1439-4421}, doi = {10.1055/s-0042-116229}, pages = {153 -- 160}, language = {de} } @misc{LangeErnstTeubneretal., author = {Lange, Felix and Ernst, Owen and Teubner, Thomas and Richter, Carsten and Schmidbauer, Martin and Skibitzki, Oliver and Schroeder, Thomas and Schmidt, Peer and Boeck, Torsten}, title = {In-plane growth of germanium nanowires on nanostructured Si(001)/SiO2 substrates}, series = {Nano Futures}, volume = {4}, journal = {Nano Futures}, number = {3}, issn = {2399-1984}, doi = {10.1088/2399-1984/ab82a0}, pages = {1 -- 8}, abstract = {Germanium (Ge) nanowires (NWs) were grown in-plane on nano-structured Si(001)/SiO2 substrates by molecular beam epitaxy using gold (Au) as the solvent. The site-selective NW growth was enabled by a rectangular array of gold droplets on silicon (Si) tips with an Au nuclei density below 0.25 μm-2 on the surrounding silicon oxide (SiO2). The initial growth of Ge NWs starting from Si-Au droplets with SixGe1-x nucleation from ternary alloy is discussed from a thermodynamic point of view. The in-plane NW elongation occurred within ⟨110⟩ directions on the substrate and NWs were mainly bounded by two 55◦ inclined 111 facets and a less pronounced planar (001) top facet. Fully relaxed crystal lattices of Ge NWs were observed from two-dimensional reciprocal space maps of x-ray diffraction measurements.}, language = {en} } @inproceedings{SproeteVesteFischeretal., author = {Spr{\"o}te, Roland and Veste, Maik and Fischer, Thomas and Lange, Philipp and Bens, Oliver and Raab, Thomas and H{\"u}ttl, Reinhard F.}, title = {Wie beeinflussen Kiefern (Pinus sylvestris L.) die Entwicklung der Benetzungshemmung auf Sandb{\"o}den?}, series = {B{\"o}den verstehen - B{\"o}den nutzen - B{\"o}den fit machen, Jahrestagung der Deutschen Bodenkundlichen Gesellschaft, 3. - 9. September 2011}, booktitle = {B{\"o}den verstehen - B{\"o}den nutzen - B{\"o}den fit machen, Jahrestagung der Deutschen Bodenkundlichen Gesellschaft, 3. - 9. September 2011}, language = {de} } @misc{ElmerBachmannGutschetal., author = {Elmer, Michael and Bachmann, Ute and Gutsch, Martin and Schr{\"o}der, Jens and B{\"a}ucker, Ernst and Lange, Mike and Clauder, Lothar and Bens, Oliver and Suckow, Felicitas and K{\"a}tzel, Ralf and Bues, Claus-Thomas and Frommhold, Heinz and Sonntag, Herbert and Fischer, Thomas and H{\"u}ttl, Reinhard F.}, title = {OakChain: Eichen-Kiefern-Mischbest{\"a}nde im Spannungsfeld von Klimawandel, Waldumbau und internationalem Holzmarkt}, series = {Forst und Holz}, volume = {64}, journal = {Forst und Holz}, number = {7/8}, issn = {0932-9315}, pages = {26 -- 29}, language = {de} } @inproceedings{SproeteVesteFischeretal., author = {Spr{\"o}te, Roland and Veste, Maik and Fischer, Thomas and Lange, Philipp and Bens, Oliver and Raab, Thomas and H{\"u}ttl, Reinhard F.}, title = {Development of biologicalsoil crusts in initial ecosystems in Lusatia, Germany}, series = {DBG Jahrestagung 2009 Bonn "B{\"o}den - eine endliche Ressource", 05.-13.09.2009, Bonn}, booktitle = {DBG Jahrestagung 2009 Bonn "B{\"o}den - eine endliche Ressource", 05.-13.09.2009, Bonn}, language = {en} } @inproceedings{FischerSproeteVesteetal., author = {Fischer, Thomas and Spr{\"o}te, Roland and Veste, Maik and Wiehe, Wolfgang and Lange, Philipp and Bens, Oliver and Raab, Thomas and H{\"u}ttl, Reinhard F.}, title = {Functions of biological soil crusts on central European inland dunes:Water repellency and pore clogging influence water infiltration}, series = {EGU General Assembly 2010, held in Vienna, Austria, 02 - 07 May 2010}, booktitle = {EGU General Assembly 2010, held in Vienna, Austria, 02 - 07 May 2010}, publisher = {European Geophysical Society}, address = {Katlenburg-Lindau}, language = {en} } @inproceedings{SproeteFischerVesteetal., author = {Spr{\"o}te, Roland and Fischer, Thomas and Veste, Maik and Lange, Philipp and Bens, Oliver and Raab, Thomas and H{\"u}ttl, Reinhard F.}, title = {Hydrophobicity in sandy soils triggered by the development of Scots Pine stands in southern Brandenburg, Germany}, series = {EGU General Assembly 2010, held in Vienna, Austria, 02 - 07 May 2010}, booktitle = {EGU General Assembly 2010, held in Vienna, Austria, 02 - 07 May 2010}, publisher = {European Geophysical Society}, address = {Katlenburg-Lindau}, language = {en} } @misc{SproeteFischerVesteetal., author = {Spr{\"o}te, Roland and Fischer, Thomas and Veste, Maik and Raab, Thomas and Wiehe, Wolfgang and Lange, Philipp and Bens, Oliver and H{\"u}ttl, Reinhard F.}, title = {Biological topsoil crusts at early successional stages on Quaternary substrates dumped by mining in Brandenburg, NE Germany}, series = {Geomorphologie: relief, processus, environnement}, volume = {16}, journal = {Geomorphologie: relief, processus, environnement}, number = {4}, issn = {1957-777X}, doi = {10.4000/geomorphologie.8083}, pages = {359 -- 370}, abstract = {The influence of biological soil crusts in natural ecosystems on structures and processes is well investigated. However, in South-Brandenburg (Germany), it is possible to study the development of biological soil crusts (BSC) during initial ecosystem genesis on two artificial water catchments with well-known ages and under differing starting conditions. The two experimental sites are located in the recultivation area of the lignite open-cast mining district of southern Brandenburg with a distance of approximately 1 km between them. Two different topographies were constructed at the experimental sites: the experimental plot at the catchment Neuer Lugteich was shaped like a dune, whereas the artificial water catchment H{\"u}hnerwasser was modelled as an inclined slope. The catchment Neuer Lugteich is four years older than H{\"u}hnerwasser. The original substrate at Neuer Lugteich is more sandy and carbonate-free compared to the original substrate dumped at H{\"u}hnerwasser. At both sites geomorphological differentiation and crust development were compared and the importance of substrate-dependent water availability and crust type clarified. Once settled, the crusts influenced the water regime of the soils by delaying infiltration through enhanced water repellency, and by limiting water infiltration. Chlorophyll analysis revealed that all crusts were at early stages of development. At Neuer Lugteich, the establishment of the biological soil crusts was closely associated with the vegetation succession, whereas no clear succession of the crusts could be observed at H{\"u}hnerwasser. The mosaic-like pattern of the biological soils crusts is associated with the distribution of fine-grained material here.zeige weniger}, language = {en} } @inproceedings{SproeteFischerVesteetal., author = {Spr{\"o}te, Roland and Fischer, Thomas and Veste, Maik and Yair, Aaron and Wiehe, Wolfgang and Lange, Philipp and Bens, Oliver and Raab, Thomas and H{\"u}ttl, Reinhard F.}, title = {Structures and processes of biological soil crusts during initial ecosystem genesis of an artificial watershed in Lusatia, NE Germany}, series = {EGU General Assembly 2010, held Vienna, Austria, 02 - 07 May 2010}, booktitle = {EGU General Assembly 2010, held Vienna, Austria, 02 - 07 May 2010}, publisher = {European Geophysical Society}, address = {Katlenburg-Lindau}, language = {en} } @article{LoehningLangeKleinodetal., author = {L{\"o}hning, Gunnar and Lange, Thomas and Kleinod, Lothar and Schwarz, Harald}, title = {EMV-St{\"o}rfestigkeitstest an einer modernisierten Industrielokomotive}, series = {F-\&-M-Mechatronik}, volume = {110}, journal = {F-\&-M-Mechatronik}, number = {5}, issn = {1619-0424}, language = {de} } @misc{FischerVesteWieheetal., author = {Fischer, Thomas and Veste, Maik and Wiehe, Wolfgang and Lange, Philipp}, title = {Water repellency and pore clogging at early successional stages of microbiotic crusts on inland dunes, Brandenburg, NE Germany}, language = {en} } @techreport{BaierReseHippetal., author = {Baier, Daniel and Rese, Alexandra and Hipp, Christiane and Lange, Astrid and Steuer, Juliane and Weinecke, Gabriele and Specht, Dieter and Braunisch, Dirk and Schulz, Thomas}, title = {Entwicklung einer Gr{\"u}ndungs- und Teamkompetenzwerkstatt f{\"u}r fachheterogene Studien- und Gr{\"u}ndungsteams (EXIST-GTW)}, language = {de} } @inproceedings{FischerVesteLangeetal., author = {Fischer, Thomas and Veste, Maik and Lange, Philipp and Wiehe, Wolfgang}, title = {How biological soil crusts are stabilizing the soil surface? The development of organo-mineral interactions in the initial phase}, series = {EGU General Assembly 2009, held in Vienna, Austria, 19 - 24 April 2009}, booktitle = {EGU General Assembly 2009, held in Vienna, Austria, 19 - 24 April 2009}, publisher = {European Geophysical Society}, address = {Katlenburg-Lindau}, language = {en} } @misc{LangeHirschMirskyetal., author = {Lange, Ulrich and Hirsch, Thomas and Mirsky, Vladimir M. and Wolfbeis, Otto S.}, title = {Hydrogen sensor based on graphene - palladium nanocomposite}, series = {Electrochimica Acta}, volume = {56}, journal = {Electrochimica Acta}, number = {10}, issn = {0013-4686}, doi = {10.1016/j.electacta.2010.10.078}, pages = {3707 -- 3712}, abstract = {A composite material was prepared from graphene and palladium nanoparticles (PdNP) by layer-by-layer deposition on gold electrodes. The material was characterized by absorption spectroscopy, scanning electron microscopy, Raman spectroscopy and surface plasmon resonance. Cyclic voltammetry demonstrated the presence of electrocatalytic centers in the palladium decorated graphene. This material can serve as a sensor material for hydrogen at levels from 0.5 to 1\% in synthetic air. Pure graphene is poorly sensitive to hydrogen, but incorporation of PdNPs increases its sensitivity by more than an order of magnitude. The effects of hydrogen, nitrogen dioxide and humidity were studied. Sensor regeneration is accelerated in humid air. The sensitivity of the nanocomposite depends on the number of bilayers of graphene-PdNPs.}, language = {en} } @misc{HaaseLangeLuetzneretal., author = {Haase, Elisabeth and Lange, Toni and L{\"u}tzner, J{\"o}rg and Kopkow, Christian and Petzold, Thomas and G{\"u}nther, Klaus-Peter and Schmitt, Jochen}, title = {Indikation zur endoprothetischen Versorgung des Kniegelenks}, series = {Zeitschrift f{\"u}r Evidenz, Fortbildung und Qualit{\"a}t im Gesundheitswesen}, volume = {109}, journal = {Zeitschrift f{\"u}r Evidenz, Fortbildung und Qualit{\"a}t im Gesundheitswesen}, number = {8}, issn = {1865-9217}, doi = {10.1016/j.zefq.2015.09.029}, pages = {605 -- 614}, language = {de} } @misc{KopkowLangeSchmittetal., author = {Kopkow, Christian and Lange, Toni and Schmitt, Jochen and Petzold, Thomas}, title = {Versorgungsforschung in der Physiotherapie: systematisch aufbauen und synergetisch (weiter)entwickeln}, series = {Das Gesundheitswesen}, volume = {79}, journal = {Das Gesundheitswesen}, number = {3}, issn = {1439-4421}, doi = {10.1055/s-0043-102137}, pages = {162 -- 163}, language = {de} } @inproceedings{SchwarzLoehningLangeetal., author = {Schwarz, Harald and L{\"o}hning, Gunnar and Lange, Thomas and Kleinod, Lothar}, title = {Ein EMV-Pr{\"u}fverfahren zur Ermittlugn der St{\"o}rfestigkeit von kompletten Schienenfahrzeugen}, series = {NetWorlds, Leben und Arbeiten in vernetzten Welten, 21. bis 23. Oktober 2002 in Dresden, VDE-Kongress 2002, Bd. 1, Fachtagungsberichte der ITG und ETG}, booktitle = {NetWorlds, Leben und Arbeiten in vernetzten Welten, 21. bis 23. Oktober 2002 in Dresden, VDE-Kongress 2002, Bd. 1, Fachtagungsberichte der ITG und ETG}, publisher = {VDE-Verlag}, address = {Berlin [u.a.]}, isbn = {3-8007-2723-4}, pages = {457 -- 459}, language = {de} } @inproceedings{SchwarzLoehningLangeetal., author = {Schwarz, Harald and L{\"o}hning, Gunnar and Lange, Thomas and K{\"u}hn, W.}, title = {Ein EMV-Pr{\"u}fverfahren zur Ermittlung der St{\"o}rfestigkeit von kompletten Schienenfahrzeugen}, series = {SFT 2002, Graz, Austria, Tagungsband, 34. Tagung Moderne Schienenfahrzeuge}, booktitle = {SFT 2002, Graz, Austria, Tagungsband, 34. Tagung Moderne Schienenfahrzeuge}, publisher = {Siemens}, address = {Berlin}, pages = {270 -- 273}, language = {de} } @inproceedings{SchwarzLoehningLangeetal., author = {Schwarz, Harald and L{\"o}hning, Gunnar and Lange, Thomas and Kleinod, Lothar}, title = {Ein pulsbasiertes EMV-Pr{\"u}fverfahren zur Ermittlung der St{\"o}rfestigkeit von Schienen- und großen Straßenfahrzeugen}, series = {Wehrtechnisches Symposium Elektromagnetische Vertr{\"a}glichkeit EMV 2002 : Tagungsband}, booktitle = {Wehrtechnisches Symposium Elektromagnetische Vertr{\"a}glichkeit EMV 2002 : Tagungsband}, publisher = {Bundesakademie f{\"u}r Wehrtechnik und Wehrverwaltung}, address = {Mannheim}, pages = {08.3.1 -- 08.3.5}, language = {de} } @article{LangeLoehningSchwarz, author = {Lange, Thomas and L{\"o}hning, Gunnar and Schwarz, Harald}, title = {Eine neue Pr{\"u}fanlage zur Gew{\"a}hrleistung der elektromagnetischen Vertr{\"a}glichkeit von Schienenfahrzeugen}, series = {Forum der Forschung}, volume = {5}, journal = {Forum der Forschung}, number = {10}, issn = {0947-6989}, pages = {90 -- 92}, language = {de} } @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{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} } @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} } @inproceedings{SproeteFischerVesteetal., author = {Spr{\"o}te, Roland and Fischer, Thomas and Veste, Maik and Wiehe, Wolfgang and Lange, Philipp and H{\"u}ttl, Reinhard F.}, title = {Development of top soil on quaternary inland dunes - How important are microorganisms?}, series = {Gletscher, Wasser, Mensch - quart{\"a}rer Landschaftswandel im peribaltischen Raum, 35. Hauptversammlung der DEUQUA e.V., 12th Annual Conference of the INQUA PeriBaltic Working Group, 13.-17.9.2010., Greifswald}, booktitle = {Gletscher, Wasser, Mensch - quart{\"a}rer Landschaftswandel im peribaltischen Raum, 35. Hauptversammlung der DEUQUA e.V., 12th Annual Conference of the INQUA PeriBaltic Working Group, 13.-17.9.2010., Greifswald}, publisher = {Lehrstuhl Physische Geographie, Inst. f{\"u}r Geographie und Geologie der Univ. Greifswald}, address = {Greifswald}, pages = {163 -- 164}, 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} } @misc{GypserVesteFischeretal., author = {Gypser, Stella and Veste, Maik and Fischer, Thomas and Lange, Philipp}, title = {Infiltration and water retention of biological soil crusts on reclaimed soils of former open-cast lignite mining sites in Brandenburg, north-east Germany}, series = {Journal of hydrology and hydromechanics}, volume = {64}, journal = {Journal of hydrology and hydromechanics}, number = {1}, doi = {10.1515/johh-2016-0009}, pages = {1 -- 11}, abstract = {Investigations were done on two former open-cast lignite mining sites under reclamation, an artificial sand dune in Welzow S{\"u}d, and a forest plantation in Schlabendorf S{\"u}d (Brandenburg, Germany). The aim was to associate the topsoil hydrological characteristics of green algae dominated as well as moss and soil lichen dominated biological soil crusts during crustal succession with their water retention and the repellency index on sandy soils under temperate cli-mate and different reliefs. The investigation of the repellency index showed on the one hand an increase due to the cross-linking of sand parti-cles by green algae which resulted in clogging of pores. On the other hand, the occurrence of moss plants led to a de-crease of the repellency index due to absorption caused by bryophytes. The determination of the water retention curves showed an increase of the water holding capacity, especially in conjunction with the growth of green algae layer. The pore-related van Genuchten parameter indicate a clay-like behaviour of the developed soil crusts. Because of the inho-mogeneous distribution of lichens and mosses as well as the varying thickness of green algae layers, the water retention differed between the study sites and between samples of similar developmental stages. However, similar tendencies of water retention and water repellency related to the soil crust formation were observed. Biological soil crusts should be considered after disturbances in the context of reclamation measures, because the ini-tial development of green algae biocrusts lead to an increasing repellency index, while the occurrence of mosses and a gain in organic matter enhance the water holding capacity. Thus, the succession of biocrusts and their small-scale succes-sion promote the development of soil and ecosystem.}, language = {en} } @misc{GypserHerppichFischeretal., author = {Gypser, Stella and Herppich, Werner B. and Fischer, Thomas and Lange, Philipp and Veste, Maik}, title = {Photosynthetic characteristics and their spatial variance on biological soil crusts covering initial soils of post-mining sites in Lower Lusatia, NE Germany}, series = {Flora}, volume = {Vol. 220}, journal = {Flora}, issn = {0367-2530}, doi = {10.1016/j.flora.2016.02.012}, pages = {103 -- 116}, abstract = {Following surface disturbance, quaternary sands are the basic substrate for soil development in the Lusatian reclamation area. These substrates mostly contain few organic matter and, hence, are nutrient poor. Accumulation of soil carbon is an important factor for ecosystem development, where biological soil crusts initially influence soil processes and promote ecosystem succession. The compositional structures of biological soil crusts at various developmental stages and their photosynthetic properties were investigated on two former open-cast lignite sites, currently under reclamation, an artificial sand dune in Welzow S{\"u}d, and a forest plantation in Schlabendorf S{\"u}d (Brandenburg, Germany). As development of biological soil crusts progressed, their contents of organic carbon and total chlorophyll increased. The ratio of these parameters, however, varied with the relative contribution of lichens and mosses in particular. Also maximum photochemical efficiency, net photosynthesis and respiration increased with crustal development. An additional evaluation of NDVI and chlorophyll fluorescence images showed that especially moss-dominated biocrusts had higher photosynthetic capacity compared to green algae-dominated biocrusts or soil lichens, so the photosynthetic capacity showed to be highly species-specific. The ratio of gross photosynthesis to respiration indicated a higher ecological efficiency of biocrusts dominated by green algae than of lichen-dominated biocrusts. The occurrence of soil lichens reduced net CO2 fixation and increased CO2 release due to the enhanced mycobiontic respiration. During crustal succession, the rise of photosynthesis-related parameters is not necessarily linear as a result of the highly heterogenic distribution of the different crustal organisms between biocrusts of similar developmental stages as well as between those growing at the two study sites. Therefore, the evaluation of relevant ecophysiological parameters highlighted that not all biocrust-forming organisms similarly contribute to the ecophysiological behavior of biological soil crusts. Nevertheless, the occurrence of the biological soil crusts promoted soil formation and accumulation of soil carbon in initial soils.}, language = {en} } @misc{GypserVesteFischeretal., author = {Gypser, Stella and Veste, Maik and Fischer, Thomas and Lange, Philipp}, title = {Formation of soil lichen crusts at reclaimed post-mining sites, Lower Lusatia, North-east Germany}, series = {Graphis Scripta}, volume = {27}, journal = {Graphis Scripta}, number = {1-2}, issn = {0901-7593}, pages = {3 -- 14}, abstract = {Biological soil crusts were investigated at reclaimed post-mining sites near Welzow and Schlabendorf in Lower Lusatia (Brandenburg, Germany). Various development stages from initial biological soil crusts built up by green algae, to more developed soil crusts with mosses, as well as moss-soil lichen crusts, were classified. The spatial-temporal dynamics during the development resulted in a moss-lichens cover with discrete patches of pioneer organisms like green algae in between. At the study sites, 13 species of terricolous lichens were identified. The formation of the biological soil crust is important for the accumulation of soil organic matter in the first millimeters of the topsoil of these pioneer ecosystems. A correlation between cryptogamic biomass and soil carbon content were found.}, language = {en} } @inproceedings{GypserFischerLangeetal., author = {Gypser, Stella and Fischer, Thomas and Lange, Philipp and Veste, Maik}, title = {Impact of biocrust succession on water retention and repellency on open-cast lignite mining sites under reclamation in Lower Lusatia, NE-Germany}, series = {European Geosciences Union, General Assembly 2016, Vienna, Austria}, booktitle = {European Geosciences Union, General Assembly 2016, Vienna, Austria}, publisher = {European Geophysical Society}, address = {Katlenburg-Lindau}, abstract = {Mining activities can strongly affect ecosystem properties by destruction of naturally developed soils and removal of vegetation. The unstructured substrates show high bulk densities, compaction, low water infiltration rates, reduced water holding capacities and higher susceptibility to wind and water erosion. In the initial stage of the ecosystem development, the post-mining sites are open areas without or with a low cover of higher vegetation. It is well-known that biocrusts are able to colonize the soil surface under such extreme conditions without human support and affect soil hydrological processes such as water infiltration, run-off or re-distribution. Investigations were conducted on two former lignite open-cast mining sites, an artificial sand dune on the reclaimed watershedWelzow "Neuer Lugteich" and a reforestation area in Schlabendorf (Brandenburg, north-east Germany). The aim was to relate the hydrological characteristics of the topsoil to successional stages of biological soil crusts on reclaimed soils and their influence on repellency index and water holding capacity compared to pure mining substrate. Our study emphasized the influence of changing successional stages and species composition of biological soil crusts, forming a small-scale crust pattern, on water repellency and retention on sandy soils in temperate climate. Different successional stages of soil crusts were identified from initial scattered green algae crusts, dominated by Zygogonium spec. and Ulothrix spec., and more developed soil crusts containing mosses such as Ceratodon purpureus and Polytrichum piliferum. Lichens of the Genus Cladonia were more pronouncedly contributed to biocrusts at later and mature stages of development. The repellency index on the one hand increased due to the cross-linking of sand particles by the filamentous green algae Zygogonium spec. which resulted in clogging of pores, and on the other hand decreased with the occurrence of moss plants due to absorption caused by bryophytes. The determination of the water retention curves showed an increase of the water holding capacity, especially in conjunction with the growth of green algae layer. The absorption capacity of soil crust biota as well as a decreased pore diameter in the green algae layers positively affected the water retention of crusted soil compared to pure substrate. The occurrence of bryophytes with later succession weakened the repellent behavior of the biocrusts, increased infiltration, and might have affected the run-off at small-scale on biocrusts. Certainly, the biological soil crusts showed water repellent properties but no distinctive hydrophobic characteristics. On both locations, similar trends of water repellency and retention related to crustal formation were observed, in spite of different relief, reclamation time and inhomogeneous distribution of crustal organisms.}, language = {en} }