14 Works

Reproductive ecology of Drosophila obscura: A cold adapted species

Berta Canal, Aileen Seipelt & Claudia Fricke
The study of insect reproductive ecology is essential to determine species distributions and fate under changing environments. Species adapted to harsh environments are good examples to investigate the reproductive mechanisms that allow them to cope with the challenging conditions. We here focus on studying for the first time the reproductive ecology of a cold-adapted D. obscura strain collected in Finland (subarctic climate region). We tested several reproductive traits such as fertility and fecundity to observe...

Tectonic and environmental perturbations at the Permian-Triassic boundary: insights from the Blue Nile River Basin in central Ethiopia

Maryam Mansouri , Matthias Hinderer , Laura Stutenbecker , Guido Meinhold , Enkurie L. Dawit , Jasper Berndt & Robert Bussert
The Blue Nile River Basin contains a thick fluvio-lacustrine sediment succession of Permian to Jurassic age. Its evolution is linked to extensional tectonics during break-up of Pangea in the aftermath of the Carboniferous-Permian glaciation. We collected sandstone samples from several sections in order to study the tectonic evolution and possible impacts of environmental perturbation around the Permian-Triassic boundary. Based on thin-section petrography, bulk-rock geochemistry, heavy mineral spectra, and detrital zircon U-Pb ages we are able...

El décimo infierno de Mempo Giardinelli: sujetos de rendimiento, topología de la violencia y topografía infernal en una novela posdetective

Beatrice Schuchardt
pp. 84-98. This article analyzes the novel El decimo infierno (1997) by the Argentine writer and theorist of crime novels Mempo Giardinelli as a ‘post-detective’ novel, a subgenre of Spanish-American crime fiction that emerged in the late nineties of the twentieth century in which criminals instead of the detective or private investigator act as protagonists. The present article suggests examining the topoi of hell and heat from a new angle, which is Byung-Chul Han’s philosophical...

Spatial variations in submarine caldera-hosted hydrothermal systems: Insights from sulfide chemistry, Niuatahi caldera, Tonga rear-arc

Jan J. Falkenberg, Manuel Keith, Karsten M. Haase , Reiner Klemd, Harald Strauss , Christian Peters & Jonguk Kim
Deep-sea and Seabed Mineral resources Research centre, Korean Institute of Ocean Science & Technology, 385 Haeyang-ro, Yeongdo-gu, 49111, Korea(3);Submarine “black smoker” systems and their associated seafloor massive sulfides (SMS) may represent economic resources for future generations. However, the processes leading to spatial variations in the mineralogical and chemical composition of subduction zone-related hydrothermal systems remain poorly constrained. The large submarine caldera of Niuatahi volcano hosts several active hydrothermal vent sites associated with faults at the...

Once an optimist, always an optimist? Studying cognitive judgment bias in mice

Marko Bračić, Lena Bohn, Viktoria Siewert, Vanessa Von Kortzfleisch, Holger Schielzeth, Sylvia Kaiser, Norbert Sachser & S. Helene Richter
This repository contains raw data and analysis code for the manuscript entitled "Once an Optimist, Always an Optimist? Studying Cognitive Judgment Bias in Mice" from Marko Bračić, Lena Bohn, Viktoria Siewert, Vanessa von Kortzfleisch, Holger Schielzeth, Sylvia Kaiser, Norbert Sachser, S. Helene Richter, accepted for publication in the journal Behavioral Ecology. The aim of the study was to investigate the causes and stability of cognitive judgment bias (aka "optimism"). Individuals differ in the way they...

Ehegattenbesteuerung in Deutschland

Johannes Becker
Ehegattensplitting und der Splittingvorteil: In Deutschland wählen Ehepaare bei der Besteuerung zwischen Einzelveranlagung und gemeinsamer Veranlagung. Wenn sie einzeln veranlagen, werden sie wie Alleinstehende besteuert (Individualbesteuerung). Bei gemeinsamer Veranlagung profitieren die Ehepartner vom Ehegattensplitting. Hohe Steuerlast für Zweitverdiener:innen in Deutschland: Das Ehegattensplitting ist jedoch politisch umstritten. Es trage der Eigenschaft der Ehe als Verbrauchs- und Versorgungsgemeinschaft Rechnung, argumentieren die Befürworter:innen. Die Kritiker:innen hingegen weisen darauf hin, dass das Ehegattensplitting auf ein Modell der Ehe zugeschnitten...

The European continental crust through detrital zircons from modern rivers: biasing effects in the detrital zircon record

Paula Castillo , Heinrich Bahlburg , Rodrigo Fernández , Mark Fanning & Jasper Berndt
We present U-Pb, Lu-Hf, and O isotopic data, as well as size-shape data for approximately 3700 detrital zircons from 15 European rivers. In combination with geomorphological information for each river basin (area, drainage length, and hypsometric curves), we evaluate the representativeness and biases affecting such datasets. The new data allow us to demonstrate that the detrital zircon record from major rivers represents all relevant geological events in Europe at the continental scale, with detrital zircon...

Geld und Herrschaft um 1300

Nils Bock
1000 Worte Forschung: im Januar 2021 abgeschlossenes Habilitationsverfahren im Fach Mittelalterliche Geschichte und Historische Hilfswissenschaften, Fachbereich Geschichte/Philosophie, Westfälische Wilhelms-Universität Münster

Vorwort der HerausgeberInnen

Cana Bayrak, Annika Frank, Jessica Heintges & Mihail Sotkov

Data on range-wide breeding habitat use of the critically endangered Yellow-breasted Bunting Emberiza aureola after population collapse

Wieland Heim, Ilka Beermann, Alexander Thomas, Marc Bastardot, Nyambayar Batbayar, Batmunkh Davaasuren, Yury Gerasimov, Makoto Hasebe, Gleb Nakul, Jugdernamjil Nergui, Pavel Ktitorov & Olga Kulikova
The population of the Yellow-breasted Bunting Emberiza aureola, a formerly widely distributed and abundant songbird of northern Eurasia, suffered a catastrophic decline and a strong range contraction between 1980 and 2013. There is evidence that the decline was driven by illegal trapping during migration, but potential contributions of other factors to the decline, such as land-use change, have not yet been evaluated. Before effects of land-use change can be evaluated, a basic understanding of the...

Biotic filtering by species’ interactions constrains food-web variability across spatial and abiotic gradients

Barbara Bauer, Emilio Berti, Remo Ryser, Benoit Gauzens, Myriam Hirt, Benjamin Rosenbaum, Christoph Digel, David Ott, Stefan Scheu & Ulrich Brose
Despite intensive research on species dissimilarity patterns across communities (i.e. beta-diversity), we still know little about their implications for variation in food-web structures. Our analyses of 50 lake and 48 forest soil communities show that, while species dissimilarity depends on environmental and spatial gradients, these effects are only weakly propagated to the networks. Moreover, our results show that species and food-web dissimilarities are consistently correlated, but that much of the variation in food-web structure across...

Kleine Fortschritte – größere Rückschritte

Julia Renner-Mugono & Siegmar Schmidt
Dieser Bericht ist Teil des Transformationsindex BTI 2022. Die regionale Analyse deckt den Zeitraum zwischen dem 1. Februar 2019 bis 31. Januar 2021 ab. Der BTI untersucht Transformationsprozesse in Richtung Demokratie und Marktwirtschaft sowie die Qualität von Regierungsführung in 137 Ländern. Mehr Informationen unter https://www.bti-project.de

One Step Forward, Two Steps Back

Julia Renner-Mugono & Siegmar Schmidt
This report is part of the Transformation Index BTI 2022. The regional analysis covers the period from February 1, 2019 to January 31, 2021. The BTI assesses the transformation toward democracy and a market economy as well as the quality of governance in 137 countries. More on the BTI at https://www.bti-project.org

Nitrogen availability and plant functional composition modify biodiversity-multifunctionality relationships

Eric Allan, Noémie Pichon, Seraina Cappelli, Santiago Soliveres, Tosca Mannall, Thu Zar Nwe, Norbert Hölzel, Valentin Klaus, Till Kleinebecker & Hugo Vincent
The ability of an ecosystem to deliver multiple functions at high levels (multifunctionality) typically increases with biodiversity but there is substantial variation in the strength and direction of biodiversity effects, suggesting context-dependency. A better understanding of the drivers of this context dependency is essential to predict effects of global change on ecosystems. To determine how different factors modulate the effect of diversity on multifunctionality, we established a large grassland experiment with 216 communities, crossing a...

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Affiliations

  • University of Münster
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  • University of Koblenz and Landau
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  • University of Erlangen-Nuremberg
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  • University of Lausanne
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  • Australian National University
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  • German Center for Integrative Biodiversity Research
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  • TU Dortmund University
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