A5052927543- Marine and coastal ecosystems
- Microbial Community Ecology and Physiology
- Marine Biology and Ecology Research
- Coastal wetland ecosystem dynamics
- Environmental DNA in Biodiversity Studies
- Isotope Analysis in Ecology
- Marine and coastal plant biology
- Marine animal studies overview
- Protist diversity and phylogeny
- Coastal and Marine Management
- Underwater Vehicles and Communication Systems
- Wastewater Treatment and Nitrogen Removal
- Ichthyology and Marine Biology
- Coral and Marine Ecosystems Studies
Helmholtz-Zentrum Hereon
2024
University of Rostock
2021
University of Bonn
2017
Coral reefs are endangered by constantly rising water temperature due to global warming. This triggers a breakdown of the nutritional symbiosis between cnidarian hosts and their Symbiodiniaceae symbionts, resulting in loss algal partner. In exists high genetic diversity with broad physiological plasticity within species, large thermal tolerance. While these variations have been studied individual taxa, comprehensive comparative experimental data on numerous species still rare. present study,...
Estuaries are important components of the global carbon cycle; exchanging between aquatic, atmospheric, and terrestrial environments, representing loci for blue storage greenhouse gas emissions. However, how estuarine gradients affect sinking/suspended particles, dissolved organic matter dynamic interactions remains unexplored. We fractionated suspended/sinking particles to assess characterise fate differences. investigated bacterial colonisation (SYBR Green I) exopolymer concentrations...
In estuaries, phytoplankton are faced with strong environmental forcing (e.g. high turbidity, salinity gradients). Taxa that appear under such conditions may play a critical role in maintaining food webs and biological carbon pumping, but knowledge about estuarine biota remains limited. This is also the case Elbe estuary where lower 70 km of water body largely unexplored. present study, we investigated composition via metabarcoding. Our aim was to identify key taxa unmonitored reaches this...
Estuaries are important components of the global carbon cycle; exchanging between aquatic, atmospheric, and terrestrial environments, representing loci for blue storage greenhouse gas emissions. Estuarine particles especially due to their microbial degradation vertical/horizontal transport. How estuarine gradients affect sinking/suspended particles, dissolved organic matter dynamic interactions remain unexplored. We fractionated suspended/sinking assess characterise fate differences....
Abstract Estuaries are important components of the global carbon cycle; exchanging between aquatic, atmospheric, and terrestrial environments, representing loci for blue storage greenhouse gas emissions. Estuarine particles especially due to their microbial transformation vertical/horizontal transport. We used metagenomes metatranscriptomes assess changes in community composition functions across Elbe estuary over one year, linking dissolved particulate organic matter. will be first link...
The aim of the present study was to test juvenile grey bamboo sharks (Chiloscyllium griseum) for their ability perceive and discriminate simple complex motion patterns.Experiments were carried out as twoalternative forced choice experiments; choosing designated positive stimulus rewarded with food.Individuals first trained differentiate between two videos circles moving at different velocities surrounded by squared reference frames.All tasks successfully mastered within 3-30 training...
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Abstract Zooplankton in estuaries encounter complex physical and biogeochemical processes that affect the quantity, quality, origin of their food sources. The knowledge about how zooplankton deal with highly variable organic matter sources is sparse. Here, we investigated spatial temporal patterns trophic dynamics carbon intensively dredged, eutrophic Elbe estuary. For this purpose, applied elemental stable isotope analysis (δ13C δ15N) on particulate (POM) dominant meso- macrozooplankton...
The Elbe Estuary is strongly impacted by anthropogenic activities such as dredging and eutrophication. Together, these cause oxygen minimum zones (OMZ) regularly during summer in the Hamburg Port area, within tidal freshwater region of estuary. Over last years, this OMZ has expanded spatially temporally. We present an analysis extraordinary event June 2022, when all-time lowest concentration was observed upstream Port.We combine data from six transect cruises (early May -late June, 2022)...
Estuaries are important biogeochemical reactors that can remove dissolved inorganic nitrogen (DIN, mostly nitrate) from the water column, but also generate nitrate via remineralization and subsequent nitrification of organic matter in column. To assess this regeneration nitrate, an nutrient source for phytoplankton contributes to eutrophication, various isotope-based laboratory methods use.In study, we compare two commonly used stable-isotope-based techniques measure estuarine water, isotope...