@article{SchefflerKetelhutMorgenstern2004,
  author    = {Scheffler, Christiane and Ketelhut, Kerstin and Morgenstern, Ulrike},
  title     = {K{\"o}rperliche und motorische Entwicklung von Kindern unterschiedlicher sozialer Herkunft.},
  year      = {2004},
  language  = {de}
}
@article{SchefflerKetelhutMorgenstern2003,
  author    = {Scheffler, Christiane and Ketelhut, Kerstin and Morgenstern, Ulrike},
  title     = {K{\"o}rperliche und motorische Entwicklung von Kindern unterschiedlicher sozialer Herkunft},
  isbn      = {3-935024-76-2},
  year      = {2003},
  language  = {de}
}
@article{RamageIrrgangHerzschuhetal.2017,
  author    = {Ramage, Justine Lucille and Irrgang, Anna Maria and Herzschuh, Ulrike and Morgenstern, Anne and Couture, Nicole and Lantuit, Hugues},
  title     = {Terrain controls on the occurrence of coastal retrogressive thaw slumps along the Yukon Coast, Canada},
  series = {Journal of geophysical research : Earth surface},
  volume    = {122},
  journal   = {Journal of geophysical research : Earth surface},
  publisher = {American Geophysical Union},
  address   = {Washington},
  issn      = {2169-9003},
  doi       = {10.1002/2017JF004231},
  pages     = {1619 -- 1634},
  year      = {2017},
  abstract  = {Retrogressive thaw slumps (RTSs) are among the most active landforms in the Arctic; their number has increased significantly over the past decades. While processes initiating discrete RTSs are well identified, the major terrain controls on the development of coastal RTSs at a regional scale are not yet defined. Our research reveals the main geomorphic factors that determine the development of RTSs along a 238km segment of the Yukon Coast, Canada. We (1) show the current extent of RTSs, (2) ascertain the factors controlling their activity and initiation, and (3) explain the spatial differences in the density and areal coverage of RTSs. We mapped and classified 287 RTSs using high-resolution satellite images acquired in 2011. We highlighted the main terrain controls over their development using univariate regression trees model. Coastal geomorphology influenced both the activity and initiation of RTSs: active RTSs and RTSs initiated after 1972 occurred primarily on terrains with slope angles greater than 3.9 degrees and 5.9 degrees, respectively. The density and areal coverage of RTSs were constrained by the volume and thickness of massive ice bodies. Differences in rates of coastal change along the coast did not affect the model. We infer that rates of coastal change averaged over a 39year period are unable to reflect the complex relationship between RTSs and coastline dynamics. We emphasize the need for large-scale studies of RTSs to evaluate their impact on the ecosystem and to measure their contribution to the global carbon budget. Plain Language Summary Retrogressive thaw slumps, henceforth slumps are a type of landslides that occur when permafrost thaws. Slumps are active landforms: they develop quickly and extend over several hectares. Satellite imagery allows to map such slumps over large areas. Our research shows where slumps develop along a 238 km segment of the Yukon Coast in Canada and explains which environments are most suitable for slump occurrence. We found that active and newly developed slumps were triggered where coastal slopes were greater than 3.9 degrees and 5.9 degrees, respectively. We explain that coastal erosion influences the development of slumps by modifying coastal slopes. We found that the highest density of slumps as well as the largest slumps occurred on terrains with high amounts of ice bodies in the ground. This study provides tools to better identify areas in the Arctic that are prone to slump development.},
  language  = {en}
}
@article{HeimLisovskiWieczoreketal.2022,
  author    = {Heim, Birgit and Lisovski, Simeon and Wieczorek, Mareike and Morgenstern, Anne and Juhls, Bennet and Shevtsova, Iuliia and Kruse, Stefan and Boike, Julia and Fedorova, Irina and Herzschuh, Ulrike},
  title     = {Spring snow cover duration and tundra greenness in the Lena Delta, Siberia},
  series = {Environmental research letters},
  volume    = {17},
  journal   = {Environmental research letters},
  number    = {8},
  publisher = {IOP Publ. Ltd.},
  address   = {Bristol},
  issn      = {1748-9326},
  doi       = {10.1088/1748-9326/ac8066},
  pages     = {18},
  year      = {2022},
  abstract  = {The Lena Delta in Siberia is the largest delta in the Arctic and as a snow-dominated ecosystem particularly vulnerable to climate change. Using the two decades of MODerate resolution Imaging Spectroradiometer satellite acquisitions, this study investigates interannual and spatial variability of snow-cover duration and summer vegetation vitality in the Lena Delta. We approximated snow by the application of the normalized difference snow index and vegetation greenness by the normalized difference vegetation index (NDVI). We consolidated the analyses by integrating reanalysis products on air temperature from 2001 to 2021, and air temperature, ground temperature, and the date of snow-melt from time-lapse camera (TLC) observations from the Samoylov observatory located in the central delta. We extracted spring snow-cover duration determined by a latitudinal gradient. The 'regular year' snow-melt is transgressing from mid-May to late May within a time window of 10 days across the delta. We calculated yearly deviations per grid cell for two defined regions, one for the delta, and one focusing on the central delta. We identified an ensemble of early snow-melt years from 2012 to 2014, with snow-melt already starting in early May, and two late snow-melt years in 2004 and 2017, with snow-melt starting in June. In the times of TLC recording, the years of early and late snow-melt were confirmed. In the three summers after early snow-melt, summer vegetation greenness showed neither positive nor negative deviations. Whereas, vegetation greenness was reduced in 2004 after late snow-melt together with the lowest June monthly air temperature of the time series record. Since 2005, vegetation greenness is rising, with maxima in 2018 and 2021. The NDVI rise since 2018 is preceded by up to 4 degrees C warmer than average June air temperature. The ongoing operation of satellite missions allows to monitor a wide range of land surface properties and processes that will provide urgently needed data in times when logistical challenges lead to data gaps in land-based observations in the rapidly changing Arctic.},
  language  = {en}
}
@article{KetelhutBittmannScheffleretal.2003,
  author    = {Ketelhut, Kerstin and Bittmann, Frank and Scheffler, Christiane and Morgenstern, Ulrike},
  title     = {Vergleichsuntersuchung {\"u}ber K{\"o}rpermaße und motorische F{\"a}higkeiten bei Kindern},
  year      = {2003},
  language  = {de}
}
@phdthesis{Morgenstern2007,
  author    = {Morgenstern, Ulrike},
  title     = {Zum Zusammenhang von Motorik und Kognition bei Vorschulkindern},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-15834},
  school      = {Universit{\"a}t Potsdam},
  year      = {2007},
  abstract  = {Problemstellung: Schuleingangsuntersuchungen belegen zunehmend Defizite in der motorischen und kognitiven Entwicklung von Einsch{\"u}lern. Im Hinblick auf Pr{\"a}ventivmaßnahmen gilt dem motorischen und kognitiven Entwicklungsstand von Vorschulkindern ein verst{\"a}rktes Forschungsinteresse. Die bisherige Wissensbasis soll mit aktuellen Untersuchungsergebnissen zum Zusammenhang von Motorik und Kognition bei Vorschulkindern erweitert werden. Methodik: Untersucht wurden 101 Kinder in vier Potsdamer Kitas im Alter von 3,5-4,6 Jahren. Zur {\"U}berpr{\"u}fung der koordinativen und konditionellen F{\"a}higkeiten wurden Standweitsprung, Sechs-Meter-Lauf, Balancieren, Einbeinstand und Seitliches Umsetzen sowie Handkoordination eingesetzt (KTK; Kiphard \& Schilling 1972; Vogt 1978). Zus{\"a}tzlich wurden in Anlehnung an das Brain-Gym-Konzept (Dennison 1984) k{\"o}rpermitte{\"u}berschreitende Armbewegungen qualitativ bewertet und auf Validit{\"a}t und Reliabilit{\"a}t gepr{\"u}ft. Die kognitiven F{\"a}higkeiten wurden mit dem Bildbasierten Intelligenztest getestet (Schaarschmidt, Ricken, Kieschke \& Preuß 2004). Ergebnisse: Jungen sind deutlich schneller und kr{\"a}ftiger als M{\"a}dchen, k{\"o}nnen aber geringf{\"u}gig schlechter balancieren und feinkoordinieren. Ein Entwicklungssprung in den motorischen Leistungen ab dem vierten Lebensjahr konnte nachgewiesen werden. Weiterhin zeigte sich ein positiver signifikanter Zusammenhang zwischen der Gleichgewichtsf{\"a}higkeit und kognitiven F{\"a}higkeiten bei den m{\"a}nnlichen 3,5-J{\"a}hrigen (r=.28-r=.32; p=0,01). Dies best{\"a}tigt: Je j{\"u}nger die Kinder, desto st{\"a}rker der Zusammenhang von Motorik und Intelligenz. Bei einseitiger Testung zeigten sich schwache signifikante Korrelationen von kognitiven Leistungen der Kinder und Qualifikation der Eltern (r=.18 - r=.21; p=0,01). Die Qualitative Bewertung der Arm- und Handbewegungen eignet sich wegen unbest{\"a}tigter Validit{\"a}t und Reliabilit{\"a}t nicht als Untersuchungsmethode im Sinne einer fr{\"u}hfunktionellen Diagnostik.},
  language  = {de}
}