@article{MillesDammhahnGrimm2020, author = {Milles, Alexander and Dammhahn, Melanie and Grimm, Volker}, title = {Intraspecific trait variation in personality-related movement behavior promotes coexistence}, series = {Oikos}, volume = {129}, journal = {Oikos}, number = {10}, publisher = {Wiley}, address = {Hoboken}, issn = {0030-1299}, doi = {10.1111/oik.07431}, pages = {1441 -- 1454}, year = {2020}, abstract = {Movement behavior is an essential element of fundamental ecological processes such as competition and predation. Although intraspecific trait variation (ITV) in movement behaviors is pervasive, its consequences for ecological community dynamics are still not fully understood. Using a newly developed individual-based model, we analyzed how given and constant ITVs in foraging movement affect differences in foraging efficiencies between species competing for common resources under various resource distributions. Further, we analyzed how the effect of ITV on emerging differences in competitive abilities ultimately affects species coexistence. The model is generic but mimics observed patterns of among-individual covariation between personality, movement and space use in ground-dwelling rodents. Interacting species differed in their mean behavioral types along a slow-fast continuum, integrating consistent individual variation in average behavioral expression and responsiveness (i.e. behavioral reaction norms). We found that ITV reduced interspecific differences in competitive abilities by 5-35\% and thereby promoted coexistence via an equalizing mechanism. The emergent relationships between behavioral types and foraging efficiency are characteristic for specific environmental contexts of resource distribution and population density. As these relationships are asymmetric, species that were either 'too fast' or 'too slow' benefited differently from ITV. Thus, ITV in movement behavior has consequences for species coexistence but to predict its effect in a given system requires intimate knowledge on how variation in movement traits relates to fitness components along an environmental gradient.}, language = {en} } @article{MarkovicWalzKaercher2019, author = {Markovic, Danijela and Walz, Ariane and K{\"a}rcher, Oskar}, title = {Scale effects on the performance of niche-based models of freshwater fish distributions: Local vs. upstream area influences}, series = {Ecological modelling : international journal on ecological modelling and engineering and systems ecolog}, volume = {411}, journal = {Ecological modelling : international journal on ecological modelling and engineering and systems ecolog}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0304-3800}, doi = {10.1016/j.ecolmodel.2019.108818}, pages = {11}, year = {2019}, abstract = {Niche-based species distribution models (SDMs) play a central role in studying species response to environmental change. Effective management and conservation plans for freshwater ecosystems require SDMs that accommodate hierarchical catchment ordering and provide clarity on the performance of such models across multiple scales. The scale-dependence components considered here are: (a) environment spatial structure, represented by hierarchical catchment ordering following the Strahler system; (b) analysis grain, that included 1st to 5th order catchments; and (c) response grain, the grain at which species respond most, represented by local and upstream catchment area effects. We used fish occurrence data from the Danube River Basin and various factors representing climate, land cover and anthropogenic pressures. Our results indicate that the choice of response grain local vs. upstream area effects and the choice of analysis grain, only marginally influence the performance of SDMs. Upstream effects tend to better predict fish distributions than corresponding local effects for anthropogenic and land cover factors, in particular for species sensitive to pollution. Key predictors and their relative importance are scale and species dependent. Consequently, choosing proper species dependent spatial scales and factors is imperative for effective river rehabilitation measures.}, language = {en} } @article{BuergerPfisterBronstert2019, author = {B{\"u}rger, Gerd and Pfister, A. and Bronstert, Axel}, title = {Temperature-Driven Rise in Extreme Sub-Hourly Rainfall}, series = {Journal of climate}, volume = {32}, journal = {Journal of climate}, number = {22}, publisher = {American Meteorological Soc.}, address = {Boston}, issn = {0894-8755}, doi = {10.1175/JCLI-D-19-0136.1}, pages = {7597 -- 7609}, year = {2019}, abstract = {Estimates of present and future extreme sub-hourly rainfall are derived from a daily spatial followed by a sub-daily temporal downscaling, the latter of which incorporates a novel, and crucial, temperature sensitivity. Specifically, daily global climate fields are spatially downscaled to local temperature T and precipitation P, which are then disaggregated to a temporal resolution of 10 min using a multiplicative random cascade model. The scheme is calibrated and validated with a group of 21 station records of 10-min resolution in Germany. The cascade model is used in the classical (denoted as MC) and in the new T-sensitive (MC+) version, which respects local Clausius-Clapeyron (CC) effects such as CC scaling. Extreme P is positively biased in both MC versions. Observed T sensitivity is absent in MC but well reproduced by MC+. Long-term positive trends in extreme sub-hourly P are generally more pronounced and more significant in MC+ than in MC. In units of 10-min rainfall, observed centennial trends in annual exceedance counts (EC) of P > 5 mm are +29\% and in 3-yr return levels (RL) +27\%. For the RCP4.5-simulated future, higher extremes are projected in both versions MC and MC+: per century, EC increases by 30\% for MC and by 83\% for MC+; the RL rises by 14\% for MC and by 33\% for MC+. Because the projected daily P trends are negligible, the sub-daily signal is mainly driven by local temperature.}, language = {en} } @article{LehmannCoumou2015, author = {Lehmann, Jascha and Coumou, Dim}, title = {The influence of mid-latitude storm tracks on hot, cold, dry and wet extremes}, series = {Scientific reports}, volume = {5}, journal = {Scientific reports}, publisher = {Nature Publ. Group}, address = {London}, issn = {2045-2322}, doi = {10.1038/srep17491}, pages = {9}, year = {2015}, abstract = {Changes in mid-latitude circulation can strongly affect the number and intensity of extreme weather events. In particular, high-amplitude quasi-stationary planetary waves have been linked to prolonged weather extremes at the surface. In contrast, analyses of fast-traveling synoptic-scale waves and their direct influence on heat and cold extremes are scarce though changes in such waves have been detected and are projected for the 21st century. Here we apply regression analyses of synoptic activity with surface temperature and precipitation in monthly gridded observational data. We show that over large parts of mid-latitude continental regions, summer heat extremes are associated with low storm track activity. In winter, the occurrence of cold spells is related to low storm track activity over parts of eastern North America, Europe, and central-to eastern Asia. Storm tracks thus have a moderating effect on continental temperatures. Pronounced storm track activity favors monthly rainfall extremes throughout the year, whereas dry spells are associated with a lack thereof. Trend analyses reveal significant regional changes in recent decades favoring the occurrence of cold spells in the eastern US, droughts in California and heat extremes over Eurasia.}, language = {en} } @article{FrielerLevermannElliottetal.2015, author = {Frieler, Katja and Levermann, Anders and Elliott, J. and Heinke, Jens and Arneth, A. and Bierkens, M. F. P. and Ciais, Philippe and Clark, D. B. and Deryng, D. and Doell, P. and Falloon, P. and Fekete, B. and Folberth, Christian and Friend, A. D. and Gellhorn, C. and Gosling, S. N. and Haddeland, I. and Khabarov, N. and Lomas, M. and Masaki, Y. and Nishina, K. and Neumann, K. and Oki, T. and Pavlick, R. and Ruane, A. C. and Schmid, E. and Schmitz, C. and Stacke, T. and Stehfest, E. and Tang, Q. and Wisser, D. and Huber, Veronika and Piontek, Franziska and Warszawski, Lila and Schewe, Jacob and Lotze-Campen, Hermann and Schellnhuber, Hans Joachim}, title = {A framework for the cross-sectoral integration of multi-model impact projections}, series = {Earth system dynamics}, volume = {6}, journal = {Earth system dynamics}, number = {2}, publisher = {Copernicus}, address = {G{\"o}ttingen}, issn = {2190-4979}, doi = {10.5194/esd-6-447-2015}, pages = {447 -- 460}, year = {2015}, abstract = {Climate change and its impacts already pose considerable challenges for societies that will further increase with global warming (IPCC, 2014a, b). Uncertainties of the climatic response to greenhouse gas emissions include the potential passing of large-scale tipping points (e.g. Lenton et al., 2008; Levermann et al., 2012; Schellnhuber, 2010) and changes in extreme meteorological events (Field et al., 2012) with complex impacts on societies (Hallegatte et al., 2013). Thus climate change mitigation is considered a necessary societal response for avoiding uncontrollable impacts (Conference of the Parties, 2010). On the other hand, large-scale climate change mitigation itself implies fundamental changes in, for example, the global energy system. The associated challenges come on top of others that derive from equally important ethical imperatives like the fulfilment of increasing food demand that may draw on the same resources. For example, ensuring food security for a growing population may require an expansion of cropland, thereby reducing natural carbon sinks or the area available for bio-energy production. So far, available studies addressing this problem have relied on individual impact models, ignoring uncertainty in crop model and biome model projections. Here, we propose a probabilistic decision framework that allows for an evaluation of agricultural management and mitigation options in a multi-impact-model setting. Based on simulations generated within the Inter-Sectoral Impact Model Intercomparison Project (ISI-MIP), we outline how cross-sectorally consistent multi-model impact simulations could be used to generate the information required for robust decision making. Using an illustrative future land use pattern, we discuss the trade-off between potential gains in crop production and associated losses in natural carbon sinks in the new multiple crop-and biome-model setting. In addition, crop and water model simulations are combined to explore irrigation increases as one possible measure of agricultural intensification that could limit the expansion of cropland required in response to climate change and growing food demand. This example shows that current impact model uncertainties pose an important challenge to long-term mitigation planning and must not be ignored in long-term strategic decision making.}, language = {en} } @book{OPUS4-14910, title = {M{\"o}glichkeiten zur Minderung des Hochwasserrisikos durch Nutzung von Flutpoldern an Havel und Oder : Bericht mit vollst{\"a}ndigen Anlagen und Kartenanhang}, series = {Brandenburgische Umweltberichte}, volume = {15}, journal = {Brandenburgische Umweltberichte}, editor = {Bronstert, Axel}, publisher = {Univ.}, address = {Potsdam}, issn = {1434-2375}, pages = {CD-ROM}, year = {2004}, language = {de} } @book{OPUS4-269, title = {M{\"o}glichkeiten zur Minderung des Hochwasserrisikos durch Nutzung von Flutpoldern an Havel und Oder}, number = {15}, editor = {Bronstert, Axel}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {3-937786-18-X}, issn = {1434-2375}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-4160}, publisher = {Universit{\"a}t Potsdam}, year = {2004}, abstract = {Die extremen Hochwasserereignisse an der Oder (Juli 1997) und Elbe (August 2002) haben erneut gezeigt, welch enorme Risiken f{\"u}r Leben und Sachg{\"u}ter von {\"U}berschwemmungen ausgehen k{\"o}nnen. Eine wichtige Maßnahme im Rahmen eines Hochwasserrisikomanagements stellt die gezielte Flutung von Polderfl{\"a}chen zur Minderung des Hochwasserrisikos von stromab gelegenen Gebieten mit hohem Schadenpotential dar. So wurde durch die Flutung der Polder an der Unteren Havel w{\"a}hrend des Elbhochwassers 2002 der Hochwasserscheitel erfolgreich verringert, wodurch die Verteidigung der stromab gelegenen Deiche unterst{\"u}tzt und die {\"U}berschwemmungsgefahr u. a. f{\"u}r die Stadt Wittenberge reduziert wurde. Dies stellt den Hintergrund des durch das Bundesministerium f{\"u}r Bildung und Forschung (BMBF) gef{\"o}rderten Projektes "M{\"o}glichkeiten zur Minderung des Hochwasserrisikos durch Nutzung von Flutpoldern an Havel und Oder" dar, das in enger Kooperation zwischen Universit{\"a}t, den Landes{\"a}mtern f{\"u}r Landwirtschaft und Umwelt und Ingenieurb{\"u}ros bearbeitet wurde. Untersuchungsgebiete waren die Neuzeller Niederung an der Oder und die Polder an der Unteren Havel, deren Nutzung als Flutpolder gepr{\"u}ft bzw. optimiert werden sollte. Die Ergebnisse des interdisziplin{\"a}ren Forschungsprojektes werden in dem vorliegenden Bericht dargestellt.}, language = {de} } @book{OPUS4-693, title = {Die {\"o}kologische Station G{\"u}lpe der Universit{\"a}t Potsdam}, number = {13}, editor = {M{\"u}hle, Ralf-Udo and Kaden, Klaus and Jeltsch, Florian}, publisher = {Universit{\"a}tsverlag Potsdam}, address = {Potsdam}, isbn = {3-935024-58-4}, issn = {1434-2375}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-7962}, publisher = {Universit{\"a}t Potsdam}, pages = {139}, year = {2003}, abstract = {Fließgew{\"a}sser erf{\"u}llen wichtige Funktionen im Naturhaushalt und bilden mit ihren Auen komplexe {\"O}kosysteme, die im urspr{\"u}nglichen Zustand durch die Dynamik der Wasserf{\"u}hrung gepr{\"a}gt werden. Seit Jahrhunderten ver{\"a}ndert der Mensch die Gestalt der Fließgew{\"a}sser, um sie f{\"u}r die schnelle Ableitung des Hochwassers, zum Abwassertransport, f{\"u}r die Schifffahrt und die Landwirtschaft zu nutzen. Im vorliegenden Themenheft werden unterschiedliche Aspekte dieser Problematik am Beispiel der Region um die {\"o}kologische Station der Universit{\"a}t Potsdam an der Unteren Havel dargestellt. Zun{\"a}chst wird die Entstehung der Kulturlandschaft im westlichen Havelland von den Anf{\"a}ngen der Besiedlung dargestellt. Anschließend folgt die Charakteristik der Landschaft und der hydrologischen Verh{\"a}ltnisse der Unteren Havelniederung. Die Darstellung der Vegetation der Havelaue wird durch Ausf{\"u}hrungen zu {\"o}kophysiologischen Untersuchungen an typischen Pflanzenarten von Feuchtstandorten untersetzt. Aufgrund ihrer reichen Naturausstattung und langzeitiger extensiver Nutzung ist die Landschaft an der Unteren Havel ein Schutzgebiet von internationaler Bedeutung als Rast- und Brutplatz f{\"u}r Wat- und Wasserv{\"o}gel. Einem zoologischen {\"U}berblick mit besonderer Ber{\"u}cksichtigung von Flussauenarten schließen sich Betrachtungen aus ornithologischer Sicht an, die neben {\"U}bersichtsarbeiten zur Avifauna der Unteren Havel ausgew{\"a}hlte Ver{\"o}ffentlichungen zur Wasservogelforschung erw{\"a}hnen. Flussauen erf{\"u}llen eine wichtige Funktion im N{\"a}hrstoffhaushalt der Landschaft. Untersuchungen an Augew{\"a}sser-Sedimenten unter ver{\"a}nderter Hochwasserdynamik tragen dem Rechnung. In Brandenburg wurden in den zur{\"u}ckliegenden Jahren große Gebiete unter Schutz gestellt. Am Beispiel des Naturparks Westhavelland wird exemplarisch diese Richtung der Naturschutzpolitik dargestellt. Die Mehrzahl der Beitr{\"a}ge basiert auf Untersuchungen in der Havelniederung, die von der {\"O}kologischen Station G{\"u}lpe ausgingen. Den Abschluss bildet ein Ausblick auf zuk{\"u}nftige {\"o}kologische Forschung an der Unteren Havel. Inhalt: G{\"O}TZE, B.: Die Untere Havelniederung - eine gewachsenen Kulturlandschaft? : {\"u}ber die Entstehung einer Kulturlandschaft im westlichen Havelland ; KADEN, K.; ITZEROTT, S.: Eine landschaftliche Charakteristik der Unteren Havelniederung bei G{\"u}lpe ; KADEN, K.; ITZEROTT, S.: Die hydrologischen Verh{\"a}ltnisse der Unteren Havelniederung ; BURKART, M.; WATTENBACH, M.; WICHMANN, M.; P{\"O}TSCH, J.: Die Vegetation der unteren Havelaue : Stand der Forschung und Perspektiven ; Gzik , A.: Vitalit{\"a}t und Konkurrenzkraft charakteristischer Pflanzenarten von Feuchtstandorten der Unteren Havelaue ; M{\"U}HLE , R.-U.: Tierleben - ein zoologischer {\"U}berblick zur Unteren Havelniederung ; WALLSCHL{\"A}GER, D: G{\"u}lper See und Untere Havelniederung aus ornitologischer Sicht : Forschungen an der {\"O}kologischen Station der Universit{\"a}t Potsdam ; KN{\"O}SCHE, R.: Zur Phospatr{\"u}ckl{\"o}sung aus Augew{\"a}ssersedimenten unter ver{\"a}nderter Hochwasserdynamik ; BORMKI, G.; KN{\"O}SCHE, R.; SCHNEIDER, I.: Untersuchungen zur N-Mineralisation und -Remobilisierung im Sedment eines extrem flachen Auensees (Schollener See) ; BUCHTA, R.: Der Aufbau neuer Naturparke in Brandenburg am Beispiel des Naturparkes Westhavelland ; JELTSCH , F.: {\"O}kologische Forschungen an der Unteren Havel - ein Ausblick}, language = {de} } @book{KuehlingSchneider2002, author = {K{\"u}hling, Matthias and Schneider, Ingo}, title = {Brandenburgische Umweltberichte [CD] : Ausgaben 1 bis 10 (1997-2001)}, publisher = {Univ.}, address = {Potsdam}, issn = {1434-2375}, pages = {1 CD-ROM : 12 cm}, year = {2002}, language = {de} } @book{OPUS4-690, title = {Mensch, Technik, Umwelt}, number = {10}, issn = {1611-9339}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-7954}, publisher = {Universit{\"a}t Potsdam}, year = {2001}, abstract = {Tagungsband des Forschungsforums Anthropologie (08.05.2001) GREIL, H.; SCHEFFLER, CH.: Zum Geleit GREIL, H.: Wie weit sind wir der DIN 33402 entwachsen? GREIL, H.: K{\"o}rpermaße 2000: aktuelle Perzentilwerte der deutschen Bev{\"o}lkerung im jungen Erwachsenenalter NAGEL, K.: Gruppenspezifische Anthropometrie in der ergonomischen Gestaltung GREIL, H.: Wachstum und Variabilit{\"a}t im K{\"o}rperbau und ihre Ber{\"u}cksichtigung bei industriellen Gr{\"o}ßensystemen NOTH, V.: Strategien bei der Handhabung von Verschl{\"u}ssen im Kleinkind- und Vorschulalter FRITZ, N.; SCHR{\"O}DER, I.: Schnittstelle Kinderhand - Computermaus SCHEFFLER, CH.: Bewegungsmuster in Alltagssituationen - Ein Altersvergleich NAGEL, K.: Anthropometrische Komfortbewertung des Fahrzeuginnenraums HUDELMAIER, J.: Die Erfassung personenindividueller Sichtverh{\"a}ltnisse im Pkw - Das Sichtanalysesystem ARGUS}, language = {de} }