A5005572886- Marine and coastal ecosystems
- Marine Biology and Ecology Research
- Microbial Community Ecology and Physiology
- Methane Hydrates and Related Phenomena
- Geology and Paleoclimatology Research
- Insect symbiosis and bacterial influences
- Mosquito-borne diseases and control
- Coral and Marine Ecosystems Studies
- Isotope Analysis in Ecology
- Wastewater Treatment and Nitrogen Removal
- Marine and environmental studies
- Bat Biology and Ecology Studies
- Vector-borne infectious diseases
- Ocean Acidification Effects and Responses
- Neuroendocrine regulation and behavior
- Geochemistry and Elemental Analysis
- Gut microbiota and health
Universität Ulm
2025
GEOMAR Helmholtz Centre for Ocean Research Kiel
2010-2018
Abstract. In this paper we provide an overview of new knowledge on oxygen depletion (hypoxia) and related phenomena in aquatic systems resulting from the EU-FP7 project HYPOX ("In situ monitoring hypoxic ecosystems coastal open seas, landlocked water bodies", http://www.hypox.net). view anticipated loss due to eutrophication climate change, was set up improve capacities monitor hypoxia as well understand its causes consequences. Temporal dynamics spatial patterns were analyzed field studies...
Benthic fluxes of dissolved ferrous iron (Fe 2+ ) and phosphate (TPO 4 were quantified by in situ benthic chamber incubations pore‐water profiles along a depth transect (11°S, 80‐1000 m) across the Peruvian oxygen minimum zone (OMZ). Bottom‐water O 2 levels < µmol L −1 down to 500‐m water depth, increased ∼ 40 at 1000 m. Fe highest on shallow shelf (maximum 316 mmol m −2 yr ), moderate (15.4 between 250 600 m, negligible deeper stations. In persistent OMZ core, continuous reduction...
Abstract. Carbon cycling in Peruvian margin sediments (11 and 12° S) was examined at 16 stations, from 74 m water depth on the middle shelf down to 1024 m, using a combination of situ flux measurements, sedimentary geochemistry modelling. Bottom oxygen below detection limit ca. 400 increased 53 μM deepest station. Sediment accumulation rates decreased sharply seaward subsequently deep stations. The organic carbon burial efficiency (CBE) unusually low (<20%) when compared an existing...
Abstract. This study presents benthic data from 12 samplings February to December 2010 in a 28 m deep channel the southwest Baltic Sea. In winter, distribution of solutes porewater was strongly modulated by bioirrigation which efficiently flushed upper 10 cm sediment, leading concentrations varied little bottom water values. Solute pumping fell sharply summer as waters became severely hypoxic (< 2 μM O2). At this point giant sulfide-oxidizing bacteria Beggiatoa visible on surface...
Diurnal rhythms of the gut microbiota are emerging as an important yet often overlooked facet microbial ecology. Feeding is thought to stimulate rhythmicity, but this has not been explicitly tested. Moreover, role environment entirely unexplored, with rhythmic changes pH rather than feeding per se possibly affecting fluctuations. In study, we experimentally manipulated schedule captive lesser long-nosed bats, Leptonycteris yerbabuenae, dissociate photic and cues, measured fecal every two...
The microbiome-the community of microorganisms that is associated with an individual animal-has been important driver insect biodiversity globally, enabling insects to specialize in narrow, nutrient-deficient diets. importance maternally inherited, obligate bacterial endosymbionts provisioning nutrients missing from these narrow dietary niches has well studied insects. However, we know comparatively little about the processes dictate composition non-maternally inherited bacteria microbiomes,...
Parameters used in the biogeochemical model not listed Table 3 are provided A1.Boundary conditions given A2.Constitutive equations which define transport terms, temperature corrections and conversion factors A3.General details of these functions presented Dale et al. (2011).The parameters for porosity function were determined from measured values all geochemical cores analyzed.Porosity was used, amongst others, to calculate situ diffusion coefficients, D, molecular coefficients porewater, D...