@article{DenglerWagnerDembiczetal.2018,
  author    = {Dengler, J{\"u}rgen and Wagner, Viktoria and Dembicz, Iwona and Garcia-Mijangos, Itziar and Naqinezhad, Alireza and Boch, Steffen and Chiarucci, Alessandro and Conradi, Timo and Filibeck, Goffredo and Guarino, Riccardo and Janisova, Monika and Steinbauer, Manuel J. and Acic, Svetlana and Acosta, Alicia T. R. and Akasaka, Munemitsu and Allers, Marc-Andre and Apostolova, Iva and Axmanova, Irena and Bakan, Branko and Baranova, Alina and Bardy-Durchhalter, Manfred and Bartha, Sandor and Baumann, Esther and Becker, Thomas and Becker, Ute and Belonovskaya, Elena and Bengtsson, Karin and Benito Alonso, Jose Luis and Berastegi, Asun and Bergamini, Ariel and Bonini, Ilaria and Bruun, Hans Henrik and Budzhak, Vasyl and Bueno, Alvaro and Antonio Campos, Juan and Cancellieri, Laura and Carboni, Marta and Chocarro, Cristina and Conti, Luisa and Czarniecka-Wiera, Marta and De Frenne, Pieter and Deak, Balazs and Didukh, Yakiv P. and Diekmann, Martin and Dolnik, Christian and Dupre, Cecilia and Ecker, Klaus and Ermakov, Nikolai and Erschbamer, Brigitta and Escudero, Adrian and Etayo, Javier and Fajmonova, Zuzana and Felde, Vivian A. and Fernandez Calzado, Maria Rosa and Finckh, Manfred and Fotiadis, Georgios and Fracchiolla, Mariano and Ganeva, Anna and Garcia-Magro, Daniel and Gavilan, Rosario G. and Germany, Markus and Giladi, Itamar and Gillet, Francois and Giusso del Galdo, Gian Pietro and Gonzalez, Jose M. and Grytnes, John-Arvid and Hajek, Michal and Hajkova, Petra and Helm, Aveliina and Herrera, Mercedes and Hettenbergerova, Eva and Hobohm, Carsten and Huellbusch, Elisabeth M. and Ingerpuu, Nele and Jandt, Ute and Jeltsch, Florian and Jensen, Kai and Jentsch, Anke and Jeschke, Michael and Jimenez-Alfaro, Borja and Kacki, Zygmunt and Kakinuma, Kaoru and Kapfer, Jutta and Kavgaci, Ali and Kelemen, Andras and Kiehl, Kathrin and Koyama, Asuka and Koyanagi, Tomoyo F. and Kozub, Lukasz and Kuzemko, Anna and Kyrkjeeide, Magni Olsen and Landi, Sara and Langer, Nancy and Lastrucci, Lorenzo and Lazzaro, Lorenzo and Lelli, Chiara and Leps, Jan and Loebel, Swantje and Luzuriaga, Arantzazu L. and Maccherini, Simona and Magnes, Martin and Malicki, Marek and Marceno, Corrado and Mardari, Constantin and Mauchamp, Leslie and May, Felix and Michelsen, Ottar and Mesa, Joaquin Molero and Molnar, Zsolt and Moysiyenko, Ivan Y. and Nakaga, Yuko K. and Natcheva, Rayna and Noroozi, Jalil and Pakeman, Robin J. and Palpurina, Salza and Partel, Meelis and Paetsch, Ricarda and Pauli, Harald and Pedashenko, Hristo and Peet, Robert K. and Pielech, Remigiusz and Pipenbaher, Natasa and Pirini, Chrisoula and Pleskova, Zuzana and Polyakova, Mariya A. and Prentice, Honor C. and Reinecke, Jennifer and Reitalu, Triin and Pilar Rodriguez-Rojo, Maria and Rolecek, Jan and Ronkin, Vladimir and Rosati, Leonardo and Rosen, Ejvind and Ruprecht, Eszter and Rusina, Solvita and Sabovljevic, Marko and Maria Sanchez, Ana and Savchenko, Galina and Schuhmacher, Oliver and Skornik, Sonja and Sperandii, Marta Gaia and Staniaszek-Kik, Monika and Stevanovic-Dajic, Zora and Stock, Marin and Suchrow, Sigrid and Sutcliffe, Laura M. E. and Swacha, Grzegorz and Sykes, Martin and Szabo, Anna and Talebi, Amir and Tanase, Catalin and Terzi, Massimo and Tolgyesi, Csaba and Torca, Marta and Torok, Peter and Tothmeresz, Bela and Tsarevskaya, Nadezda and Tsiripidis, Ioannis and Tzonev, Rossen and Ushimaru, Atushi and Valko, Orsolya and van der Maarel, Eddy and Vanneste, Thomas and Vashenyak, Iuliia and Vassilev, Kiril and Viciani, Daniele and Villar, Luis and Virtanen, Risto and Kosic, Ivana Vitasovic and Wang, Yun and Weiser, Frank and Went, Julia and Wesche, Karsten and White, Hannah and Winkler, Manuela and Zaniewski, Piotr T. and Zhang, Hui and Ziv, Yaron and Znamenskiy, Sergey and Biurrun, Idoia},
  title     = {GrassPlot - a database of multi-scale plant diversity in Palaearctic grasslands},
  series = {Phytocoenologia},
  volume    = {48},
  journal   = {Phytocoenologia},
  number    = {3},
  publisher = {Cramer},
  address   = {Stuttgart},
  issn      = {0340-269X},
  doi       = {10.1127/phyto/2018/0267},
  pages     = {331 -- 347},
  year      = {2018},
  abstract  = {GrassPlot is a collaborative vegetation-plot database organised by the Eurasian Dry Grassland Group (EDGG) and listed in the Global Index of Vegetation-Plot Databases (GIVD ID EU-00-003). GrassPlot collects plot records (releves) from grasslands and other open habitats of the Palaearctic biogeographic realm. It focuses on precisely delimited plots of eight standard grain sizes (0.0001; 0.001;... 1,000 m(2)) and on nested-plot series with at least four different grain sizes. The usage of GrassPlot is regulated through Bylaws that intend to balance the interests of data contributors and data users. The current version (v. 1.00) contains data for approximately 170,000 plots of different sizes and 2,800 nested-plot series. The key components are richness data and metadata. However, most included datasets also encompass compositional data. About 14,000 plots have near-complete records of terricolous bryophytes and lichens in addition to vascular plants. At present, GrassPlot contains data from 36 countries throughout the Palaearctic, spread across elevational gradients and major grassland types. GrassPlot with its multi-scale and multi-taxon focus complements the larger international vegetationplot databases, such as the European Vegetation Archive (EVA) and the global database " sPlot". Its main aim is to facilitate studies on the scale-and taxon-dependency of biodiversity patterns and drivers along macroecological gradients. GrassPlot is a dynamic database and will expand through new data collection coordinated by the elected Governing Board. We invite researchers with suitable data to join GrassPlot. Researchers with project ideas addressable with GrassPlot data are welcome to submit proposals to the Governing Board.},
  language  = {en}
}
@article{BeckerPettiniRafelskietal.2019,
  author    = {Becker, George D. and Pettini, Max and Rafelski, Marc and Boera, Elisa and Christensen, Lise and Cupani, Guido and Ellison, Sara L. and Farina, Emanuele Paolo and Fumagalli, Michele and Lopez, Sebastian and Neeleman, Marcel and Ryan-Weber, Emma and Worseck, Gabor},
  title     = {The Evolution of OI over 3.2 < z < 6.5: Reionization of the Circumgalactic Medium},
  series = {The astrophysical journal : an international review of spectroscopy and astronomical physics},
  volume    = {883},
  journal   = {The astrophysical journal : an international review of spectroscopy and astronomical physics},
  number    = {2},
  publisher = {IOP Publ. Ltd.},
  address   = {Bristol},
  issn      = {0004-637X},
  doi       = {10.3847/1538-4357/ab3eb5},
  pages     = {37},
  year      = {2019},
  abstract  = {We present a survey for metal absorption systems traced by neutral oxygen over 3.2 < z < 6.5. Our survey uses Keck/ESI and VLT/X-Shooter spectra of 199 QSOs with redshifts up to 6.6. In total, we detect 74 OI absorbers, of which 57 are separated from the background QSO by more than 5000 km s(-1). We use a maximum likelihood approach to fit the distribution of OI lambda 1302 equivalent widths in bins of redshift and from this determine the evolution in number density of absorbers with W-1302 > 0.05 angstrom, of which there are 49 nonproximate systems in our sample. We find that the number density does not monotonically increase with decreasing redshift, as would naively be expected from the buildup of metal-enriched circumgalactic gas with time. The number density over 4.9 < z < 5.7 is a factor of 1.7-4.1 lower (68\% confidence) than that over 5.7 < z < 6.5, with a lower value at z < 5.7 favored with 99\% confidence. This decrease suggests that the fraction of metals in a low-ionization phase is larger at z similar to 6 than at lower redshifts. Absorption from highly ionized metals traced by CIV is also weaker in higher-redshift OI systems, supporting this picture. The evolution of OI absorbers implies that metal-enriched circumgalactic gas at z similar to 6 is undergoing an ionization transition driven by a strengthening ultraviolet background. This in turn suggests that the reionization of the diffuse intergalactic medium may still be ongoing at or only recently ended by this epoch.},
  language  = {en}
}
@article{DorenkampBonaventuraSohnsetal.2012,
  author    = {Dorenkamp, Marc and Bonaventura, Klaus and Sohns, Christian and Becker, Christoph R. and Leber, Alexander W.},
  title     = {Direct costs and cost-effectiveness of dual-source computed tomography and invasive coronary angiography in patients with an intermediate pretest likelihood for coronary artery disease},
  series = {Heart},
  volume    = {98},
  journal   = {Heart},
  number    = {6},
  publisher = {BMJ Publ. Group},
  address   = {London},
  issn      = {1355-6037},
  doi       = {10.1136/heartjnl-2011-300149},
  pages     = {460 -- 467},
  year      = {2012},
  abstract  = {Aims The study aims to determine the direct costs and comparative cost-effectiveness of latest-generation dual-source computed tomography (DSCT) and invasive coronary angiography for diagnosing coronary artery disease (CAD) in patients suspected of having this disease. Methods The study was based on a previously elaborated cohort with an intermediate pretest likelihood for CAD and on complementary clinical data. Cost calculations were based on a detailed analysis of direct costs, and generally accepted accounting principles were applied. Based on Bayes' theorem, a mathematical model was used to compare the cost-effectiveness of both diagnostic approaches. Total costs included direct costs, induced costs and costs of complications. Effectiveness was defined as the ability of a diagnostic test to accurately identify a patient with CAD. Results Direct costs amounted to (sic)98.60 for DSCT and to (sic)317.75 for invasive coronary angiography. Analysis of model calculations indicated that cost-effectiveness grew hyperbolically with increasing prevalence of CAD. Given the prevalence of CAD in the study cohort (24\%), DSCT was found to be more cost-effective than invasive coronary angiography ((sic)970 vs (sic)1354 for one patient correctly diagnosed as having CAD). At a disease prevalence of 49\%, DSCT and invasive angiography were equally effective with costs of (sic)633. Above a threshold value of disease prevalence of 55\%, proceeding directly to invasive coronary angiography was more cost-effective than DSCT. Conclusions With proper patient selection and consideration of disease prevalence, DSCT coronary angiography is cost-effective for diagnosing CAD in patients with an intermediate pretest likelihood for it. However, the range of eligible patients may be smaller than previously reported.},
  language  = {en}
}
@book{AmbauenArnoldBeckeretal.2021,
  author    = {Ambauen, Ladina and Arnold, Maren and Becker, Christian and Chahrour, Mohamed Chaker and Destanovic, Edis and Fretter, Alexandra and Geißler, Marc and Gr{\"u}nberg, Uwe and Habl, Moritz and Hoffmann, Sandra and Juchler, Ingo and Jurkatis, Lena Christine and Keitel, Bernhard and Losensky, Nikolai and Mrowietz, Christian and Nadol, Dominic and Naumann, Asja and Ockenga, Imke and Pohlandt, Anne and P{\"u}rschel, Tobias and Recktenwald, Michelle and Stephan, Roswitha and Tuchel, Johannes and Weinkamp, Christina and Weiß, Christian and Wiecking, Ole and Wockenfuß, Patricia and Zalitatsch, Nora Lina},
  title     = {Mildred Harnack und die Rote Kapelle in Berlin},
  editor    = {Juchler, Ingo},
  edition   = {2., verbesserte Auflage},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-86956-500-2},
  doi       = {10.25932/publishup-48176},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-481762},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {170},
  year      = {2021},
  abstract  = {Mildred Harnack, geb. Fish, stammte urspr{\"u}nglich aus Milwaukee, Wisconsin. Zusammen mit ihrem Ehemann Arvid Harnack zog sie nach Deutschland und lebte seit 1930 in Berlin. Hier lehrte die Literaturwissenschaftlerin an der Friedrich-Wilhelms-Universit{\"a}t (heute Humboldt-Universit{\"a}t) und am Berliner Abendgymnasium (heute Peter A. Silbermann-Schule). Bereits kurz nach der Macht{\"u}bernahme von Adolf Hitler hatte sich um das Ehepaar Harnack ein Kreis von Freunden gebildet, der gegen die Herrschaft der Nationalsozialisten opponierte. Dazu z{\"a}hlten auch Karl Behrens und Bodo Schl{\"o}singer, die beide Sch{\"u}ler Mildred Harnacks am Berliner Abendgymnasium waren. Mildred Harnack konnte mit Hilfe ihrer Kontakte zur amerikanischen Botschaft ihren Sch{\"u}lern im nationalsozialistischen Deutschland ansonsten nicht zug{\"a}ngliche Informationen besorgen. Aufgrund von Funkkontakten des Freundeskreises zur Sowjetunion wurde die Gruppe von den Nationalsozialisten Rote Kapelle genannt - „rot" bezog sich auf deren linke Haltung und mit „Kapelle" wurden Funker assoziiert, die wie Pianisten in einer Kapelle spielen. Der Berliner Oppositionszirkel umfasste bis zu seiner Zerschlagung durch die Nationalsozialisten etwa 150 Personen verschiedenster Berufsgruppen, unterschiedlicher parteipolitischer Einstellungen und Konfessionen. Die Gruppe verfertigte oppositionelle Flugbl{\"a}tter und lieferte Informationen an die amerikanische Botschaft sowie an die Sowjetunion. Mildred Harnack wurde - wie viele ihrer Mitstreiterinnen und Mitstreiter - nach ihrer Verhaftung vom Reichskriegsgericht zum Tode verurteilt und am 16. Februar 1943 in Pl{\"o}tzensee guillotiniert. In diesem Band stellen Studierende der Universit{\"a}t Potsdam sowie H{\"o}rerinnen und H{\"o}rer der Peter A. Silbermann-Schule (Berlin) nach einem kurzen {\"U}berblick zum Widerstand gegen den Nationalsozialismus in Deutschland das Netzwerk der Roten Kapelle sowie die Biographien von Mildred Harnack und ihren Sch{\"u}lern Karl Behrens und Bodo Schl{\"o}singer vom Berliner Abendgymnasium eindr{\"u}cklich vor.},
  language  = {de}
}
@book{AmbauenArnoldBeckeretal.2017,
  author    = {Ambauen, Ladina and Arnold, Maren and Becker, Christian and Chahrour, Mohamed Chaker and Destanovic, Edis and Fretter, Alexandra and Geißler, Marc and Gr{\"u}nberg, Uwe and Habl, Moritz and Hoffmann, Sandra and Juchler, Ingo and Jurkatis, Lena Christine and Keitel, Bernhard and Losensky, Nikolai and Mrowietz, Christian and Nadol, Dominic and Naumann, Asja and Ockenga, Imke and Pohlandt, Anne and P{\"u}rschel, Tobias and Recktenwald, Michelle and Stephan, Roswitha and Tuchel, Johannes and Weinkamp, Christina and Weiß, Christian and Wiecking, Ole and Wockenfuß, Patricia and Zalitatsch, Nora Lina},
  title     = {Mildred Harnack und die Rote Kapelle in Berlin},
  editor    = {Juchler, Ingo},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  isbn      = {978-3-86956-407-4},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-398166},
  publisher      = {Universit{\"a}t Potsdam},
  pages     = {170},
  year      = {2017},
  abstract  = {Mildred Harnack, geb. Fish, stammte urspr{\"u}nglich aus Milwaukee, Wisconsin. Zusammen mit ihrem Ehemann Arvid Harnack zog sie nach Deutschland und lebte seit 1930 in Berlin. Hier lehrte die Literaturwissenschaftlerin an der Friedrich-Wilhelms-Universit{\"a}t (heute Humboldt-Universit{\"a}t) und am Berliner Abendgymnasium (heute Peter A. Silbermann-Schule). Bereits kurz nach der Macht{\"u}bernahme von Adolf Hitler hatte sich um das Ehepaar Harnack ein Kreis von Freunden gebildet, der gegen die Herrschaft der Nationalsozialisten opponierte. Dazu z{\"a}hlten auch Karl Behrens und Bodo Schl{\"o}singer, die beide Sch{\"u}ler Mildred Harnacks am Berliner Abendgymnasium waren. Mildred Harnack konnte mit Hilfe ihrer Kontakte zur amerikanischen Botschaft ihren Sch{\"u}lern im nationalsozialistischen Deutschland ansonsten nicht zug{\"a}ngliche Informationen besorgen. Aufgrund von Funkkontakten des Freundeskreises zur Sowjetunion wurde die Gruppe von den Nationalsozialisten Rote Kapelle genannt - „rot" bezog sich auf deren linke Haltung und mit „Kapelle" wurden Funker assoziiert, die wie Pianisten in einer Kapelle spielen. Der Berliner Oppositionszirkel umfasste bis zu seiner Zerschlagung durch die Nationalsozialisten etwa 150 Personen verschiedenster Berufsgruppen, unterschiedlicher parteipolitischer Einstellungen und Konfessionen. Die Gruppe verfertigte oppositionelle Flugbl{\"a}tter und lieferte Informationen an die amerikanische Botschaft sowie an die Sowjetunion. Mildred Harnack wurde - wie viele ihrer Mitstreiterinnen und Mitstreiter - nach ihrer Verhaftung vom Reichskriegsgericht zum Tode verurteilt und am 16. Februar 1943 in Pl{\"o}tzensee guillotiniert. In diesem Band stellen Studierende der Universit{\"a}t Potsdam sowie H{\"o}rerinnen und H{\"o}rer der Peter A. Silbermann-Schule (Berlin) nach einem kurzen {\"U}berblick zum Widerstand gegen den Nationalsozialismus in Deutschland das Netzwerk der Roten Kapelle sowie die Biographien von Mildred Harnack und ihren Sch{\"u}lern Karl Behrens und Bodo Schl{\"o}singer vom Berliner Abendgymnasium eindr{\"u}cklich vor.},
  language  = {de}
}
@article{KuehnBeckerHarpkeetal.2022,
  author    = {K{\"u}hn, Elisabeth and Becker, Marc and Harpke, Alexander and K{\"u}hn, Ingolf and Kuhlicke, Christian and Schmitt, Thomas and Settele, Josef and Musche, Martin},
  title     = {The benefits of counting butterflies: recommendations for a successful citizen science project},
  series = {Ecology and Society},
  volume    = {27},
  journal   = {Ecology and Society},
  number    = {2},
  publisher = {Resilience Alliance},
  address   = {Wolfville},
  issn      = {1708-3087},
  doi       = {10.5751/ES-12861-270238},
  pages     = {39},
  year      = {2022},
  abstract  = {Citizen science (CS) projects, being popular across many fields of science, have recently also become a popular tool to collect biodiversity data. Although the benefits of such projects for science and policy making are well understood, relatively little is known about the benefits participants get from these projects as well as their personal backgrounds and motivations. Furthermore, very little is known about their expectations. We here examine these aspects, with the citizen science project "German Butterfly Monitoring" as an example. A questionnaire was sent to all participants of the project and the responses to the questionnaire indicated the following: center dot Most transect walkers do not have a professional background in this field, though they do have a high educational level, and are close to retirement, with a high number of females; center dot An important motivation to join the project is to preserve the natural environment and to contribute to scientific knowledge; center dot Participants benefit by enhancing their knowledge about butterflies and especially their ability to identify different species (taxonomic knowledge); center dot Participants do not have specific expectations regarding the project beyond proper management and coordination, but have an intrinsic sense of working for a greater good. The willingness to join a project is higher if the project contributes to the solution of a problem discussed in the media (here, insect decline). Based on our findings from the analysis of the questionnaire we can derive a set of recommendations for establishing a successful CS project. These include the importance of good communication, e.g., by explaining what the (scientific) purpose of the project is and what problems are to be solved with the help of the data collected in the project. The motivation to join a CS project is mostly intrinsic and CS is a good tool to engage people during difficult times such as the COVID-19 pandemic, giving participants the feeling of doing something useful.},
  language  = {en}
}