Barbara Bauer results 27
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Limited efficiency of wet scrubbers in reducing the environmental impact of ship-emitted particlesNARA Subscribed
Sulfur dioxide pollution by ship emissions can be efficiently decreased by using exhaust gas scrubbers, yet particles can pass through the scrubber and be released into the atmosphere. Here, we studied the impact of using a wet scrubber on the composition of particle emissions, by single-particle analysis. At low engine loads, results show no significant changes in particle composition of metals, salts, and polycyclic aromatic...
Evidence for a conserved queen‐worker genetic toolkit across slave‐making ants and their ant hostsNARA Subscribed
The ecological success of social Hymenoptera (ants, bees, wasps) depends on the division of labour between the queen and workers. Each caste exhibits highly specialized morphology, behaviour, and life‐history traits, such as lifespan and fecundity. Despite strong defences against alien intruders, insect societies are vulnerable to social parasites, such as workerless inquilines or slave‐making ants. Here, we investigate whethe...
Biotic filtering by species’ interactions constrains food‐web variability across spatial and abiotic gradientsNARA Subscribed
Despite intensive research on species dissimilarity patterns across communities (i.e. β‐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 fo...
Springs located at the historical sites of Wadi Araba (Eastern Desert of Egypt) and emerging from the escarpments of the Northern and Southern Galala Plateaus were investigated. A combination of methods, including hydrochemistry, stable and radioisotope composition, and structural analyses based on satellite data, provided information about the structure of the subsurface and the derived groundwater flow paths. Satellite image...
Catch crops increase plant species richness in crop rotations, but are most often grown as pure stands. Here, we investigate the impacts of increasing plant diversity in catch crop rotations on rhizosphere C input and microbial utilization. Mustard ( Sinapis alba L.) planted as a single cultivar was compared to diversified catch crop mixtures of four (Mix4) or 12 species (Mix12). We traced the C transfer from shoots to roots t...
EPMA-World Congress 2015NARA Subscribed
The development of synchronous movement by bottlenose dolphins ( Tursiops truncatus )NARA Subscribed
The development of motor synchrony in dolphins has been described qualitatively, but seldom quantified. We provide a detailed description of the development of synchrony in 12 calves for periods ranging from birth to a few days up to 22 wk. We observed the presence of synchrony, relative positions, and proximity and undertook a videotape analysis of one calf for initiations/terminations of synchrony, response time to breaks in...
Distribution of Alarin Immunoreactivity in the Mouse BrainNARA Subscribed