Results 21 to 30 of about 184,820 (311)

Effective Diahaline Diffusivities in Estuaries

Journal of Advances in Modeling Earth Systems, 2021
The present study aims to estimate effective diahaline turbulent salinity fluxes and diffusivities in numerical model simulations of estuarine scenarios.
Hans Burchard, Ulf Gräwe, Knut Klingbeil, Nicky Koganti, Xaver Lange, Marvin Lorenz   +5 more
doaj   +1 more source

Spatial variability of greenhouse gas concentrations and fluxes in shallow coastal bays of the western Baltic Sea [PDF]

Biogeosciences
Coastal ecosystems play a crucial role in greenhouse gas (GHG) dynamics but are less studied than open oceans or terrestrial systems. This study measured concentrations of carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) in six shallow bays ...
J. Zinke, J. P. Hansen, M. Hermans, A. Fonseca, A. Fonseca, S. A. Wikström, L. Kumblad, E. Rydin, M. Geibel, M. E. Salter, M. E. Salter, C. Humborg, C. Humborg   +12 more
doaj   +1 more source

Chemoautotrophic growth of ammonia-oxidizing Thaumarchaeota enriched from a pelagic redox gradient in the Baltic Sea

Frontiers in Microbiology, 2015
Ammonia-oxidizing archaea (AOA) are an important component of the planktonic community in aquatic habitats, linking nitrogen and carbon cycles through nitrification and carbon fixation.
Carlo eBerg, Luisa eListmann, Verona eVandieken, Verona eVandieken, Angela eVogts, Klaus eJürgens   +5 more
doaj   +1 more source

Nitrosopumilus as main source of isoprenoid glycerol dialkyl glycerol tetraether lipids in the central Baltic Sea

Frontiers in Microbiology, 2023
Nitrososphaeria in the phylum Crenarchaeota, is a widespread archaeal class in the oceanic realm, playing an important role in the marine carbon and nitrogen cycle.
Anna Katharina Wittenborn, Thorsten Bauersachs, Christiane Hassenrück, Katja Käding, Janine Wäge-Recchioni, Klaus Jürgens, Helge Wolfgang Arz, Jérôme Kaiser   +7 more
doaj   +1 more source

Nitrate source identification in the Baltic Sea using its isotopic ratios in combination with a Bayesian isotope mixing model [PDF]

Biogeosciences, 2014
Nitrate (NO3−) is the major nutrient responsible for coastal eutrophication worldwide and its production is related to intensive food production and fossil-fuel combustion.
F. Korth, B. Deutsch, C. Frey, C. Moros, M. Voss   +4 more
doaj   +1 more source

Direct and indirect effects of Gracilaria vermiculophylla on native Fucus vesiculosus [PDF]

, 2013
The perennial red macroalga Gracilaria vermiculophylla (Ohmi) Papenfuss has recently been introduced to the Baltic Sea and is a potential competitor to Fucus vesiculosus, the most common native perennial alga in large parts of the Baltic Sea.
Buchholz, Björn, Hammann, Mareike, Karez, Rolf, Weinberger, Florian   +3 more
core   +1 more source

Zonation of bacterioplankton communities along aging upwelled water in the northern Benguela upwelling

Frontiers in Microbiology, 2015
Upwelling areas are shaped by enhanced primary production in surface waters, accompanied by a well-investigated planktonic succession. Although bacteria play an important role in biogeochemical cycles of upwelling systems, little is known about bacterial
Benjamin eBergen, Daniel PR Herlemann, Klaus eJürgens   +2 more
doaj   +1 more source

Phytoplankton stimulation in frontal regions of Benguela upwelling filaments by internal factors

Frontiers in Marine Science, 2016
Filaments are intrusions of upwelling water into the sea, separated from the surrounding water by fronts. Current knowledge explains the enhanced primary production and phytoplankton growth found in frontal areas by external factors like nutrient input ...
Norbert Wasmund, Herbert Siegel, Karolina Bohata, Anita Flohr, Anja Hansen, Volker Mohrholz   +5 more
doaj   +1 more source

Reduced Reproductive Success of Western Baltic Herring (Clupea harengus) as a Response to Warming Winters

Frontiers in Marine Science, 2021
Shallow estuaries, bays, and lagoons are generally considered hot spots of ocean productivity that often adjust rapidly to seasonal variations in atmospheric temperatures. During spring when biological reproductive processes begin in the temperate zones,
Patrick Polte, Tomas Gröhsler, Paul Kotterba, Lena von Nordheim, Lena von Nordheim, Dorothee Moll, Juan Santos, Paco Rodriguez-Tress, Yury Zablotski, Christopher Zimmermann   +9 more
doaj   +1 more source

A Multi-Pumping Flow System for In Situ Measurements of Dissolved Manganese in Aquatic Systems

Sensors, 2016
A METals In Situ analyzer (METIS) has been used to determine dissolved manganese (II) concentrations in the subhalocline waters of the Gotland Deep (central Baltic Sea).
David Meyer, Ralf D. Prien, Olaf Dellwig, Joanna J. Waniek, Ingo Schuffenhauer, Jan Donath, Siegfried Krüger, Malte Pallentin, Detlef E. Schulz-Bull   +8 more
doaj   +1 more source