30 Works

LT-Brazil: A database of leaf traits across biomes and vegetation types in Brazil

Eduardo Mariano, Taciana Gomes, Silvia Lins, Adibe Abdalla-Filho, Amin Soltangheisi, Maria Araújo, Rodrigo Almeida, Fernanda Augusto, Luiza Canisares, Siglea Chaves, Cristiane Costa, Thaís Diniz-Reis, Leonardo Galera, Melissa Martinez, Maristela Morais, Elen Perez, Lucas Reis, Carla Simon, Silvia Mardegan, Tomas Domingues, Raquel Miatto, Rafael Oliveira, Carla Reis, Gabriela Nardoto, Jens Kattge … & Luiz Martinelli
Motivation: Leaf traits represent an important component of plant functional strategies, and those related to carbon fixation and nutrient acquisition form the leaf economics spectrum. However, observations of functional leaf traits are underrepresented in tropical regions in comparison with those in temperate areas. Brazil, a country with continental scale and vast biodiversity is a timely example, where many biomes are impacted by human activities and climate change. However, leaf traits relevant to understand vegetation responses...

Four new mitochondrial genomes for the basal bee family Melittidae (Hymenoptera: Apoidea)

Jana Nickel, Carla Violetta Reinbold, Michael Kuhlmann, Mathilde Cordellier & Martin Husemann
We present four new complete mitochondrial genomes for Dasypoda hirtipes, Melitta schultzei, Capicola nanula and Samba griseonigra belonging to the basally branching bee family Melittidae covering four genera in three tribes (Melittini, Hesperaspini, Dasypodaini) and two subfamilies (Melittinae, Dasypodainae). The mitogenomes vary between 15,884 and 20,324 bp in length and consist of the typical set of 13 protein-coding genes, 22 tRNAs, two rRNAs and the control region. These new mitogenomes raise the number of available...

Towards a stable global Noctuidae (Lepidoptera) taxonomy

Kevin Keegan, Jadranka Rota, Reza Zahiri, Alberto Zilli, Niklas Wahlberg, B. Christian Schmidt, J. Donald Lafontaine, Paul Goldstein & David Wagner
The family Noctuidae is one of the world’s most diverse, ecologically successful, and economically important animal lineages; with over 12,000 species in ~1150 genera. We inferred a phylogeny based on eight protein-coding genes (>6,400 base pairs) for the global fauna, greatly expanding upon previous attempts to stabilize the higher classification of Noctuidae by sampling 70 of the 76 widely recognized family-group taxa: 20 of the 21 subfamilies, 32 of the 35 tribes, and 18 of...

Primordial GATA6 macrophages function as extravascular platelets in sterile injury

Joel Zindel, Moritz Peiseler, Mokarram Hossain, Carsten Deppermann, Woo Yong Lee, Beat Haenni, Bas Surewaard, Daniel Candinas & Paul Kubes
Most multicellular organisms have a major body cavity that harbors immune cells. In primordial species like purple sea urchins, these cells perform phagocytic functions but are also crucial in repairing injuries. In mammals, the peritoneal cavity contains large numbers of resident GATA6+ macrophages, which may play a similar role. It is unclear how cavity macrophages suspended in the fluid phase (peritoneal fluid) identify and migrate towards injuries, however. Here, we show that cavity macrophages in...

Vowel Harmony Viewed as Error-Correcting Code

Yvo Meeres & Tommi A. Pirinen

Hamburg Open Science 2018 - 2020

Stefan Thiemann

Evaluating species delimitation methods in radiations: The land snail Albinaria cretensis complex on Crete

Sonja Bamberger, Jie Xu & Bernhard Hausdorf
Delimiting species in radiations is notoriously difficult because of the small differences between the incipient species, the star-like tree with short branches between species, incomplete lineage sorting, and the possibility of introgression between several of the incipient species. Next generation sequencing data may help to overcome some of these problems. We evaluated methods for species delimitation based on genome-wide markers in a land snail radiation on Crete. Species delimitation in the Albinaria cretensis group was...

Plant diversity across small-scale boundaries

Pia Maria Eibes, Jens Oldeland, Severin David Howard Irl, Alina Twerski, Nicole Kühne & Ute Schmiedel
Questions: Habitat islands are often characterized by the presence of more or less sharp boundaries to adjacent matrix habitats. However, knowledge on boundaries of natural habitat islands is scarce, especially regarding patterns of beta diversity and its two underlying components: species turnover and nestedness. We therefore aim to quantify the effects of fine-scaled and sharp boundaries of quartz islands (quartz-gravel covered soils) on the different components of plant beta diversity and how they are linked...

Asesinas en series: violencia femenina en la televisión mexicana

Joachim Michael
pp. 68-85. Women who kill or take control of a drug cartel have moved into the center of interest of television producers. With series such as Mujeres asesinas or La reina del sur, television tries to show that it has already overcome the melodramatic tradition that qualifies women either as self-sacrificing victims or as ‘devourers’. These series propose that the female gender not only suffers the aggression of men or seduces them with their ‘own...

BRIDGING Transfer digitaler Hochschulbildungskonzepte: Ein empirischer Zugang. Transkripte der Interviews

Tina Ladwig, Christiane Arndt, Stefanie Trümper, Gitte Köllner & Lisa Figura
DE: Transkripte der im Rahmen der drei Wellen der Studie BRIDGING Transfer digitaler Hochschulbildungskonzepte geführten Interviews: in der ersten Phase sind 19 Interviews mit Verbundexpert_innen, d.h. in einem bundeslandbezogenen und hochschultypenübergreifenden Hochschulverbund aktiven Personen geführt worden. Diese Expert_innen stammen aus den Verbünden Hochschulnetzwerk Digitalisierung der Lehre Baden-Württemberg, der Hamburg Open Online University, der Virtuellen Hochschule Bayern und der Digitalen Hochschule NRW. In der zweiten Welle wurden 22 Fachexpert_innen, d.h. Fakultäts- und Fachbereichsvertreter_innen interviewt. Darüber hinaus...

Supplementary data to “Alternative reproductive tactics are associated with sperm performance in invasive round goby from two different salinity environments”

Leon Green, Jan Niemax, Jens‐Peter Herrmann, Axel Temming & Charlotta Kvarnemo
During male-male competition, evolution can favor alternative reproductive tactics. This often results in a dominant morph that holds a resource, such as a nest for egg laying, competes with a smaller sneaker morph that reproduces by stealing fertilizations. The salinity environment can influence male growth rates, e.g. via osmoregulatory costs, which in turn may influence the use of sneaker tactics for small males competing for mating opportunities. Salinity can also affect sperm directly; however, little...

Macronutritional composition of Swedish moose rumen samples collected 2014/15

Annika Felton, Hilde Wam, Adam Felton, Stephen Simpson, Caroline Stolter, Per-Ola Hedwall, Jonas Malmsten, Torsten Eriksson, Mulualem Tigabu & David Raubenheimer
At northern latitudes, large spatial and temporal variation in the nutritional composition of available foods poses challenges to wild herbivores trying to satisfy their nutrient requirements. Studies conducted in mostly captive settings have shown that animals from a variety of taxonomic groups deal with this challenge by adjusting the amounts and proportions of available food combinations to achieve a target nutrient balance. In this study, we used proportions-based nutritional geometry to analyse the nutritional composition...

Data from: Sex differences in morphology across an expanding range edge in the flightless ground beetle, Carabus hortensis

Elisabeth Yarwood, Claudia Drees, Jeremy Niven, Marisa Gawel & Wiebke Schuett
Many species experience range shifts, contractions, and/or expansions. Often, morphological traits that increase movement capacity are observed in higher frequencies at the edge of an expanding or shifting range. Although traits observed at the range edge may differ between the sexes, sex differences in the distribution of morphological traits across species’ changing ranges are rarely studied. Here, we report pronotum width (as a proxy for body size) and body condition data from individual Carabus hortensis...

Context-dependent dispersal determines relatedness and genetic structure in a patchy amphibian population

Bianca Unglaub, Hugo Cayuela, Benedikt R. Schmidt, Kathleen Preißler, Julian Glos & Sebastian Steinfartz
Dispersal is a central process in ecology and evolution with far reaching consequences for the dynamics and genetics of spatially structured populations (SSPs). Individuals can adjust their decisions to disperse according to local fitness prospects, resulting in context-dependent dispersal. By determining dispersal rate, distance, and direction, these individual-level decisions further modulate the demography, relatedness, and genetic structure of SSPs. Here, we examined how context-dependent dispersal influences the dynamics and genetics of a Great Crested Newt...

Survival data of five artificial morphs with different transparency characteritics

Mónica Arias, Lucie Leroy, Clément Madec, Louane Matos, Cynthia Tedore, Marianne Elias & Doris Gomez
Fieldwork data of artificial prey survival of five different morphs with differences in their transparent element characteristics: O (opaque, 0 transparency), SW (small transparent windows), LW (large transparent windows), BE (large windows touching one prey edge) and B3E (large windows touching 3 prey edges). The experiment was performed in in two forests in southern France with evergreen and white oaks as predominant tree vegetation: La Rouvière forest (43.65°N, 3.64°E) and a large natural wooded area...

Data from: Strategic pheromone signalling by mate searching females of the sexually cannibalistic spider Argiope bruennichi

Katharina Weiss & Jutta M. Schneider
Reproduction often requires finding a mating partner. To this end, females of many arthropods advertise their presence to searching males via volatile chemical signals. Such pheromones are considered low-cost signals, although this notion is based on little evidence and has recently been challenged. Even when utilizing comparatively low-cost signals, females should signal as little as possible to minimize costs while still ensuring mate attraction. Here we test the strategic-signalling hypothesis using Argiope bruennichi. In this...

Circular Business Models: Overcoming Barriers, Unleashing Potentials

Erik. G. Hansen, Patrick Wiedemann, Klaus Fichter, Florian Lüdeke-Freund, Melanie Jaeger-Erben, Thomas Schomerus, Andres Alcayaga, Fenna Blomsma, Ursula Tischner, Ulrich Ahle, Daniel Büchle, Ann-Kathrin Denker, Karsten Fiolka, Magnus Fröhling, Alexander Häge, Volker Hoffmann, Holger Kohl, Tara Nitz, Christian Schiller, Rebecca Tauer, Dieter Vollkommer, Dieter Wilhelm, Hartmut Zefferer, Seda Akinci, Florian Hofmann … & Susanne Kadner
Most current patterns of production and consumption follow a linear “extract, produce, consume, dispose” model. According to the Circular Gap Report 2020, the global economy is just 9% circular. This economic model is contributing to a massive transgression of “planetary boundaries” and the destabilisation of ecosystems and factors essential to human life such as the climate system and biodiversity. As a result, there is currently much discussion of a paradigm shift in the industrial value...

Breaking force Spekia

Wencke Krings, Alexander Kovalev & Stanislav N. Gorb
One molluscan autapomorphy is the radula, the organ used for feeding. Here, for the first time, the performance and failure of taenioglossan radular teeth were tested in a biomechanical experiment which in turn allowed building hypotheses about tooth functionalities. Shear load was applied to tooth cusps with a force transducer until structural failure occurred, the broken area was measured, and finally breaking stress was calculated. These experiments were carried out under dry and wet conditions....

Data from: Sperm performance limits the reproduction of an invasive fish in novel salinities

Leon Green, Jan Niemax, Jens-Peter Herrmann, Axel Temming, Jane W. Behrens, Jonathan N. Havenhand, Erica Leder & Charlotta Kvarnemo
Aim: The few fish species able to reproduce across wide osmotic ranges either plastically acclimate sperm performance to, or are locally adapted to, different salinities. The invasive round goby (Neogobius melanostomus) is spreading in Eurasia and the Americas, into both fresh and brackish water. We aim to understand if reproduction in different salinities is affected an ability to acclimate. Location: Brackish and freshwater systems of northern Europe and the Baltic Sea. Methods: We cross-exposed round...

Different combinations of insect Na,K-ATPase α- and β-subunits enable fine-tuned adaptation to host plant toxins and tissue specific needs

Marlena Winter, Safaa Dalla, Vera Wagschal, Rohin Turjalei, Marlies Heiser & Susanne Dobler
Background Cardiac glycosides are known to fatally inhibit the Na,K-ATPase throughout the animal kingdom. Several animals, however, evolved target-site insensitivity by substitutions in the otherwise highly conserved cardiac glycoside binding pocket located on the Na,K-ATPase α-subunit. The minimal functional enzyme consist of an α- and a β-subunit, the latter considered mainly as a chaperone responsible for correct folding and membrane integration. We here analyze resistance to cardiac glycosides and kinetic properties of different Na,K-ATPase α/β-combinations...

Development time, adult body weight and fecundity of female Trichonephila senegalensis spiders

Nelli Lissowsky, Simona Kralj-Fišer & Jutta M. Schneider
Variation in life history traits within a population is caused by genetic, maternal and environmental factors. We explore high variability in development time, adult body weight and fecundity in females of the sexually-size dimorphic spider Trichonephila senegalensis. While their mothers originated from two habitats – strongly seasonal Namibia and mildly seasonal South Africa, we reared F1 females under standardized laboratory conditions. We find that a considerable part of the variability in recorded life-history traits is...

Herkunftsbestimmung von Keramik aus der Siedlung Taganrog am unteren Don durch Neutronenaktivierungsanalyse

Sabine Huy, Hans Mommsen & Ortwin Dally
Auf Basis von makroskopisch gebildeten Fabrikatsgruppen wurden aus dem Fundmaterial der Siedlung von Taganrog (Russische Föderation) 203 Keramikfragmente für eine Herkunftsbestimmung mittels der Neutronenaktivierungsanalyse (NAA) ausgewählt. Die Ergebnisse erweiterten die Erkenntnisse von bereits bekannten Herkunftsgruppen. Insbesondere zu Produktionsregionen von archaisch ostgriechischen Transportamphoren erzielten die NAA aus Taganrog neue Resultate. Das Verfahren bezeugte auch die Güte der angewandten Methode zur makroskopischen Analyse der Keramikfunde.

Data from: A brief history and popularity of methods and tools used to estimate micro-evolutionary forces

Jonathan Kidner, Panagiotis Theodorou, Martin Husemann, Jan Engler & Martin Taubert
Population genetics is a field of research that predates the current generations of sequencing technology. Those approaches, that were established before massively parallel sequencing methods, have been adapted to these new marker systems (in some cases involving the development of new methods) that allow genome-wide estimates of the four major micro-evolutionary forces – mutation, gene flow, genetic drift and selection. Nevertheless, classic population genetic markers are still commonly used and a plethora of analysis methods...

Zirkuläre Geschäftsmodelle: Barrieren überwinden, Potenziale freisetzen

Erik G. Hansen, Patrick Wiedemann, Fichter Klaus, Florian Lüdeke-Freund, Melanie Jaeger-Erben, Thomas Schomerus, Andres Alcayaga, Fenna Blomsma, Ursula Tischner, Ulrich Ahle, Daniela Büchle, Ann-Kathrin Denker, Karsten Fiolka, Magnus Fröhling, Alexander Häge, Volker Hoffmann, Holger Kohl, Tara Nitz, Christian Schiller, Rebecca Tauer, Dieter Vollkommer, Dieter Wilhelm, Hartmut Zefferer, Seda Akinci, Florian Hofmann … & Susanne Kadner
Heutige Produktions- und Konsummuster folgen weitgehend einer linearen Logik: abbauen, herstellen, konsumieren, entsorgen. Nur neun Prozent der Weltwirtschaft sind laut Circular Gap Report 2020 kreislaufgeführt. Doch dieses Wirtschaftsprinzip trägt zu einer massiven Überschreitung der „Planetaren Grenzen“ und damit zu einer Destabilisierung der Ökosysteme und Lebensgrundlage der Menschen bei, wie etwa des Klimasystems und der Artenvielfalt. Demzufolge wird derzeit viel über einen Paradigmenwechsel in der Logik industrieller Wertschöpfung diskutiert – weg von einem ressourcenintensiven hin zu...

How to render species comparable taxonomic units through deep time: A case study on intraspecific osteological variability in extant and extinct Lacertid lizards

Emanuel Tschopp, James Napoli, Lukardis Wencker, Massimo Delfino & Paul Upchurch
Generally, the species is considered to be the only naturally occurring taxon. However, species recognised and defined using different species delimitation criteria cannot readily be compared, impacting studies of biodiversity through Deep Time. This comparability issue is particularly marked when comparing extant with extinct species, because the only available data for species delimitation in fossils is derived from their preserved morphology, which is generally restricted to osteology in vertebrates. Here, we quantify intraspecific, intrageneric, and...

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  • Universität Hamburg
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