TY - GEN A1 - Schneider, Anna A1 - Gerke, Horst H. A1 - Maurer, Thomas A1 - Seifert, Stefan A1 - Nenov, Rossen A1 - Hüttl, Reinhard F. T1 - Evaluation of remotely-sensed DEMs and modification based on plausibility rules and initial sediment budgets of an artificially-created catchment T2 - Earth Surface Processes and Landforms Y1 - 2012 SN - 1096-9837 VL - 37 IS - 7 SP - 708 EP - 725 ER - TY - GEN A1 - Schneider, Anna A1 - Gerke, Horst H. A1 - Maurer, Thomas A1 - Nenov, Rossen T1 - Initial hydro-geomorphic development and rill network evolution in an artificial catchment T2 - Earth Surface Processes and Landforms N2 - The formation of erosion rills and gullies is a critical step in land surface development, but possibilities to study initial unaffected surface development under natural conditions and with well-defined initial and boundary conditions are rare. The objective of this study was to characterize rill network development from ’point zero’ in the artificially-created catchment ‘Hühnerwasser’. To ensure unaffected development, the study was largely restricted to the analysis of remotely-sensed data. We analyzed a series of photogrammetry-based digital elevation models (DEMs) for 10 points in time, over a period of five years and beginning with the initial state. The evolving erosion rill network was quantitatively described based on mapping from aerial photographs. DEMs and rill network maps were combined to specifically analyze the development of morphometry for different parts of the network and to characterize energy dissipation and connectivity. The restriction to remote-sensing data did not allow for analyzing specific processes governing rill network development, nevertheless, two major development phases could be characterized. We observed a phase of growth of the rill network along with variations in drainage patterns during the first two years of development and a subsequent phase of reduction of its area along with comparably stable patterns. Region-specific analysis of morphometry indicates that, besides effects of changing sediment characteristics and vegetation cover development, locally evolving hydro-geomorphic feedback cycles influenced this development. Results show an increasing similarity of overall statistical characteristics (e.g. drainage density) for two parts of the catchment, but a persistent influence of initial conditions on specific rill geometry. The observed development towards higher orderliness and increased connectivity is consistent with experiments and concepts on drainage network evolution across scales; however, we did not observe major influences of rill piracy and cross grading or a reduction of energy dissipation with network development. Y1 - 2013 U6 - https://doi.org/10.1002/esp.3384 SN - 1096-9837 VL - 38 IS - 13 SP - 1496 EP - 1512 ER - TY - CHAP A1 - Gassert, Egbert A1 - Ender, Remo A1 - Nenov, Rossen A1 - Leßmann, Dieter T1 - Analyse der Vegetationsentwicklung am Beispiel eines Teichs in der Bergbaufolgelandschaft T2 - Ergebnisse der Jahrestagung 2017 der Deutschen Gesellschaft für Limnologie (DGL) in Cottbus KW - Fernerkundung KW - Luftbilder KW - Monitoring Y1 - 2018 UR - https://www.dgl-ev.de/cms/upload/dokumente/Publikationen/DGL_Ergebnisse_der_Jahrestagung_2017_Cottbus_CD.pdf SN - 978-3-9818302-2-4 SP - 113 EP - 116 PB - Eigenverlag der DGL CY - Hardegsen ER - TY - CHAP A1 - Gassert, Egbert A1 - Nenov, Rossen A1 - Ender, Remo T1 - Analyse der Vegetationsentwicklung am Beispiel eines Teiches in der Bergbaufolgelandschaft T2 - Gewässer im Wandel der Landschaft, 33. Jahrestagung der Deutschen Gesellschaft für Limnologie e.V. (DGL) und der Societas Internationalis Limnologiae (SIL), BTU Cottbus, 25.-29.09.2017, Abstractband N2 - Methoden der Fernerkundung gewinnen in der ökologischen Forschung zunehmend an Bedeutung und sind in vielen Bereichen bereits fest etabliert. Am Beispiel der Vegetationssukzession an und in einem neu angelegten Teich soll das Potential der GIS-basierten Auswertung von Luftbildern aufgezeigt werden. Das künstlich angelegte Wassereinzugsgebiet „Hühnerwasser“ im Bereich des Niederlausitzer Braunkohlentagebaus Welzow-Süd wird als Modell für die initiale Entwicklung eines Ökosystems genutzt. Für das Gebiet wurde im September 2005 mit Beendigung der Bauarbeiten der „Punkt Null" einer unbeeinflussten Sukzession definiert. Im am tiefsten gelegenen Bereich der 6 ha großen Fläche wurde eine Senke geschaffen, in der sich in wenigen Monaten ein Teich mit einer Fläche von ca. 3.800 m² und einem Volumen von rund 4.000 m³ entwickelte. Seine maximale Tiefe betrug 2,4 m. Die Gebietsentwicklung wird im Rahmen eines umfangreichen Monitorings u.a. mit regelmäßigen Vegetationskartierungen erfasst. Etwa 20 % des ursprünglichen Seevolumens gingen innerhalb der ersten drei Jahre durch erosionsbedingte Sedimenteinträge aus dem Einzugsgebiet verloren. Durch den zunehmenden Rückhalt der Mittel- und Grobsande im sich im Teichzulaufbereich ausbildenden Schwemmfächer gelangten in der Folge überwiegend feinkörniges Sediment aus Ton und Schluff (< 0,06 mm) in den Teich, die sich in den nördlichen und zentralen tieferen Bereichen ablagerten. Die fortschreitende Vegetationsentwicklung im Einzugsgebiet führte zudem zu einer Abnahme der Erosionsprozesse und begünstigte auch die rasche Ausbreitung von emersen und submersen Makrophyten im Teich und um den Teich herum. Die Ufervegetation erwies sich als wirksame Sedimentfalle, die dem weiteren Eintrag mineralischer Stoffe entgegenwirkte. Zur Darstellung der Vegetationsentwicklung an und um den Teich herum wurden GIS-basierte Verfahren der Luftbildauswertung herangezogen. Zu Beginn der Vegetationsentwicklung dominierten am Gewässerrand Schilf (Phragmites australis) und mit deutlich geringerem Deckungsgrad Breitblättriger Rohrkolben (Typha latifolia). Die Makrophyten-Besiedlung im Teich setzte sich aus drei Potamogeton-Arten (P. pectinatus, P. lucens und P. natans), Myriophyllum spicatum und Chara globularis zusammen. Im Jahr 2009 war P. pectinatus die häufigste Makrophytenart im Teich, gefolgt von P. lucens und M. spicatum, P. natans und Chara globularis. 2015 dominierten dann P. lucens und P. natans, Ch. globularis. P. pectinatus und M. spicatum wurden nicht mehr gefunden. Der Schilfgürtel erstreckte sich inzwischen auf nahezu alle Teichbereiche mit einer Wassertiefe von weniger als 1 m. Y1 - 2017 UR - http://dgl2017.de/sserpdrow/images/Abstractband_DGL2017.pdf SP - S. 180 ER - TY - CHAP A1 - Nenov, Rossen A1 - Vogt, Silvio A1 - Elmer, Michael A1 - Schaaf, Wolfgang A1 - Biemelt, Detlef T1 - Monitoring installations at the Chicken Creek catchment T2 - Structures and processes of the initial ecosystem development, 1st International Conference associated with 4th Meeting of Young Researchers in Earth Sciences (MYRES), 20-24 September 2010, Cottbus, Germany, proceedings Y1 - 2010 UR - https://www-docs.b-tu.de/chicken-creek/public/Proceedings_TR38_2010.pdf SP - S. 84 PB - BTU CY - Cottbus ER - TY - CHAP A1 - Schneider, Anna A1 - Gerke, Horst H. A1 - Maurer, Thomas A1 - Nenov, Rossen A1 - Seifert, Stefan T1 - Quantification of initial sediment redistribution in an artificially-created catchment using a time series of digital elevation models T2 - European Geosciences Union General Assembly 2011, Vienna, Austria, 03 – 08 April 2011 Y1 - 2011 UR - http://meetingorganizer.copernicus.org/EGU2011/EGU2011-4686.pdf N1 - EGU2011-4686 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - CHAP A1 - Schneider, Anna A1 - Gerke, Horst H. A1 - Maurer, Thomas A1 - Nenov, Rossen A1 - Raab, Thomas T1 - Hydro-geomorphic differentiation of an artificial catchment during the initial phase of ecosystem development T2 - AGU Fall Meeting 2011, San Francisco, Calif., 5-9 Dec. 2011 Y1 - 2011 SP - H31A-1134 ER - TY - CHAP A1 - Biemelt, Detlef A1 - Schaaf, Wolfgang A1 - Nenov, Rossen ED - Elmer, Michael ED - Schaaf, Wolfgang ED - Biemelt, Detlef ED - Gerwin, Werner ED - Hüttl, Reinhard F. T1 - Water budget components T2 - The artificial catchment Chicken Creek - initial ecosystem development 2005-2010 Y1 - 2011 SP - 33 EP - 54 PB - FZLB CY - Cottbus ER - TY - CHAP A1 - Elmer, Michael A1 - Schaaf, Wolfgang A1 - Biemelt, Detlef A1 - Nenov, Rossen A1 - Gerwin, Werner ED - Elmer, Michael ED - Schaaf, Wolfgang ED - Biemelt, Detlef ED - Gerwin, Werner ED - Hüttl, Reinhard F. T1 - Introduction T2 - The artificial catchment Chicken Creek - initial ecosystem development 2005-2010 Y1 - 2011 SP - 1 EP - 10 PB - FZLB CY - Cottbus ER - TY - CHAP A1 - Biemelt, Detlef A1 - Nenov, Rossen ED - Schaaf, Wolfgang ED - Biemelt, Detlef ED - Hüttl, Reinhard F. T1 - Meteorology T2 - Initial development of the artificial catchment "Chicken Creek" : monitoring program and survey 2005-2008 Y1 - 2010 UR - http://opus.kobv.de/btu/volltexte/2011/2073/ SP - 9 EP - 20 PB - Univ. of Technology, Research Center Landscape Development and Mining Landscapes (FZLB) CY - Cottbus ER - TY - GEN A1 - Schaaf, Wolfgang A1 - Elmer, Michael A1 - Fischer, Anton A1 - Gerwin, Werner A1 - Nenov, Rossen A1 - Pretzsch, Hans A1 - Zaplata, Markus Klemens T1 - Feedbacks between vegetation, surface structures and hydrology during initial development of the artificial catchment 'Chicken Creek' T2 - Procedia Environmental Sciences N2 - Our investigations at the artificial catchment ´Chicken Creek´ in Lusatia/Germany aim to disentangle and understand the feedback mechanisms and interrelationships of processes and their co-development with spatial and temporal structures and patterns by studying this initial, probably less complex ecosystem. Intensive measurements were carried out in the catchment with regard to the development of surface structures, hydrological patterns, and vegetation dynamics. During the first seven years, considerable changes within the catchment were observed. Both internal and external factors could be identified as driving forces for the formation of structures and patterns in the artificial catchment. Initial structures formed by the construction process and initial substrate characteristics were decisive for the distribution and flow of water. External factors like episodic events triggered erosion and dissection during this initial phase, promoted by the low vegetation cover and the unconsolidated sandy substrate. The transformation of the initial geo-system into areas with evolving terrestrial or aquatic characteristics and from a very episodic to a more permanent stream network and discharge, together with the observed vegetation dynamics increased site diversity and heterogeneity with respect to water and nutrient availability and transformation processes compared to the more homogenous conditions at point zero. The processes and feedback mechanisms in the initial development of a new landscape may deviate in rates, intensity and dominance from those known from mature ecosystems. It is therefore crucial to understand these early phases of ecosystem development and to disentangle the increasingly complex interactions between the evolving terrestrial and aquatic, biotic and abiotic compartments of the system. Artificially created catchments could be a suitable tool to study these initial developments at the landscape scale under known, designed and defined boundary conditions. Y1 - 2013 U6 - https://doi.org/10.1016/j.proenv.2013.06.010 SN - 1878-0296 VL - 19 SP - 86 EP - 95 ER - TY - GEN A1 - Elmer, Michael A1 - Gerwin, Werner A1 - Schaaf, Wolfgang A1 - Zaplata, Markus Klemens A1 - Hohberg, Karin A1 - Nenov, Rossen A1 - Bens, Oliver A1 - Hüttl, Reinhard F. T1 - Dynamics of initial ecosystem development at the artificial catchment Chicken Creek, Lusatia, Germany T2 - Environmental Earth Sciences KW - ecosystem development Y1 - 2013 SN - 1866-6299 VL - 69 IS - 2 SP - 491 EP - 505 ER - TY - GEN A1 - Schaaf, Wolfgang A1 - Elmer, Michael A1 - Fischer, Anton A1 - Gerwin, Werner A1 - Nenov, Rossen A1 - Pretzsch, Hans A1 - Seifert, Stefan A1 - Winter, Susanne A1 - Zaplata, Markus Klemens T1 - Monitoring the formation of structures and patterns during initial development of an artificial catchment T2 - Environmental Monitoring and Assessment N2 - The objective of this paper is to present observations, results from monitoring measurements, and preliminary conclusions about the development of patterns and structures during the first 5 years of development of an artificial catchment starting from point zero. We discuss the high relevance of initial system traits and external events for the system development and draw conclusions for further research. These investigations as part of a Collaborative Research Center, aim to disentangle and understand the feedback mechanisms and interrelationships of processes and their co-development with spatial and temporal structures and patterns by studying an initial, probably less complex ecosystem. Therefore, intensive measurements were carried out in the catchment with regard to the development of surface structures, hydrological patterns, vegetation dynamics, water chemistry, and element budgets. During the first 5 years, considerable changes within the catchment were observed. Both internal and external factors could be identified as driving forces for the formation of structures and patterns in the artificial catchment. Initial structures formed by the construction process and initial substrate characteristics were decisive for the distribution and flow of water. External factors like episodic events triggered erosion and dissection during this initial phase, promoted by the low vegetation cover, and the unconsolidated sandy substrate. The transformation of the initial geosystem into areas with evolving terrestrial or aquatic characteristics and from a very episodic to a more permanent stream network and discharge, together with the observed vegetation dynamics increased site diversity and heterogeneity with respect to water and nutrient availability and transformation processes compared with the more homogenous conditions at point zero. The processes and feedback mechanisms in the initial development of a new landscape may deviate in rates, intensity, and dominance from those known from mature ecosystems. It is therefore crucial to understand these early phases of ecosystem development and to disentangle the increasingly complex interactions between the evolving terrestrial and aquatic, biotic, and abiotic compartments of the system. Long-term monitoring of initial ecosystems may provide important data and parameters on processes and the crucial role of spatial and temporal structures and patterns to solve these problems. Artificially created catchments could be a suitable tool to study these initial developments at the landscape scale under known, designed, and defined boundary conditions. KW - ecosystem development Y1 - 2013 U6 - https://doi.org/10.1007/s10661-012-2998-x SN - 0167-6369 VL - Vol. 185 IS - 7 SP - 5965 EP - 5986 ER - TY - CHAP A1 - Schaaf, Wolfgang A1 - Elmer, Michael A1 - Gerwin, Werner A1 - Fischer, Anton A1 - Zaplata, Markus Klemens A1 - Nenov, Rossen T1 - Feedbacks between structures and processes during initial ecosystem development in an artificial catchment T2 - European Geosciences Union, General Assembly 2013, Vienna, Austria, 07 – 12 April 2013 N2 - We studied the role of strutures and processes and their feedbacks during initial ecosystem development in the artificial catchment Chicken Creek. During the first seven years, considerable changes within the catchment were observed. Both internal and external factors could be identified as driving forces for the formation of structures and patterns in the artificial catchment. Initial structures formed by the construction process and initial substrate characteristics were decisive for the distribution and flow of water. External factors like episodic events triggered erosion and dissection during this initial phase, promoted by the low vegetation cover and the unconsolidated sandy substrate. The transformation of the initial geo-system into areas with evolving terrestrial or aquatic characteristics and from a very episodic to a more permanent stream network and discharge, together with the observed vegetation dynamics increased site diversity and heterogeneity with respect to water and nutrient availability and transformation processes compared to the more homogenous conditions at point zero. The processes and feedback mechanisms in the initial development of a new landscape may deviate in rates, intensity and dominance from those known from mature ecosystems. It is therefore crucial to understand these early phases of ecosystem development and to disentangle the increasingly complex interactions between the evolving terrestrial and aquatic, biotic and abiotic compartments of the system. Artificially created catchments could be a suitable tool to study these initial developments at the landscape scale under known, designed and defined boundary conditions. Y1 - 2013 UR - http://meetingorganizer.copernicus.org/EGU2013/EGU2013-6837.pdf N1 - EGU2013-6837 PB - European Geophysical Society CY - Katlenburg-Lindau ER - TY - GEN A1 - Seiffert, Thomas A1 - Nenov, Rossen A1 - Maurer, Thomas A1 - Gerwin, Werner A1 - Veste, Maik A1 - Raab, Thomas ED - Holzheu, Stefan ED - Thies, B. T1 - Microdrone-based photogrammetry for water catchment monitoring T2 - Dimensions of ecology - from global change to molecular ecology, (GfÖ) 39th annual conference, University of Bayreuth, 14th - 18th September 2009 Y1 - 2009 SP - S. 129 PB - Bayreuther Zentrum für Ökologie und Umweltforschung (BayCEER) Selbstverlag CY - Bayreuth ER -