Results 21 to 30 of about 15,807 (165)

A bioreactor approach to investigate the linkage between methane oxidation and nitrate/nitrite reduction in the pelagic oxic-anoxic transition zone of the central Baltic Sea

Frontiers in Marine Science, 2016
Evidence of aerobic methane oxidation coupled to denitrification has been provided for different freshwater environments, whereas the significance of this process for the marine realm has not been adequately investigated.
Gunnar Jakobs, Gunnar Jakobs, Matthias Labrenz, Gregor Rehder, Susanna Hietanen, Katrin Kießlich, Angela Vogts, Martin Blumenberg, Martin Blumenberg, Oliver Schmale   +9 more
doaj   +1 more source

Atlantic multidecadal variability and the implications for North European precipitation

Environmental Research Letters, 2022
The North Atlantic exhibits temperature variations on multidecadal time scales, summarized as the Atlantic multidecadal variability (AMV). The AMV plays an essential role for regional climate and is a key driver of the low-frequency variability in ...
Florian Börgel, H E Markus Meier, Matthias Gröger, Monika Rhein, Cyril Dutheil, Jan Moritz Kaiser   +5 more
doaj   +1 more source

Bathymetric Properties of the Baltic Sea [PDF]

Ocean Science, 2019
Abstract. Marine science and engineering commonly require reliable information about seafloor depth (bathymetry), e.g. for studies of ocean circulation, bottom habitats, fishing resources, sediment transport, geohazards and site selection for platforms and cables.
M. Jakobsson, C. Stranne, M. O'Regan, S. L. Greenwood, B. Gustafsson, C. Humborg, E. Weidner, E. Weidner   +7 more
openaire   +3 more sources

Ventilation of the Northern Baltic Sea [PDF]

Ocean Science, 2019
Abstract. The Baltic Sea is a semi-enclosed, brackish water sea in northern Europe. The deep basins of the central Baltic Sea regularly show hypoxic conditions. In contrast, the northern parts of the Baltic Sea, the Bothnian Sea and Bay, are well oxygenated.
T. Neumann, H. Siegel, M. Moros, M. Gerth, M. Kniebusch, D. Heydebreck, D. Heydebreck   +6 more
openaire   +3 more sources

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

From weather data to river runoff: using spatiotemporal convolutional networks for discharge forecasting [PDF]

Geoscientific Model Development
The quality of river runoff determines the quality of regional climate projections for coastal oceans or other estuaries. This study presents a novel approach to river runoff forecasting using convolutional long short-term memory (ConvLSTM) networks. Our
F. Börgel, S. Karsten, K. Rummel, U. Gräwe   +3 more
doaj   +1 more source

Investigating Hypoxic and Euxinic Area Changes Based on Various Datasets From the Baltic Sea

Frontiers in Marine Science, 2022
The Baltic Sea is a coastal sea with the world’s largest anthropogenically induced hypoxic bottom area. Although hypoxia has periodically occurred during the sea’s 8,000-year history, the rapid rise in the population and intensified agriculture after ...
Karina Krapf, Michael Naumann, Cyril Dutheil, H. E. Markus Meier, H. E. Markus Meier   +4 more
doaj   +1 more source

Reconstructing N₂-fixing cyanobacterial blooms in the Baltic Sea beyond observations using 6- and 7-methylheptadecane in sediments as specific biomarkers [PDF]

Biogeosciences, 2020
Summer cyanobacterial blooms represent a threat to the Baltic Sea ecosystem, causing deoxygenation of the bottom water and the spread of the so-called dead zones.
J. Kaiser, N. Wasmund, M. Kahru, A. K. Wittenborn, R. Hansen, K. Häusler, M. Moros, D. Schulz-Bull, H. W. Arz   +8 more
doaj   +1 more source

Postglacial water level changes of a drowned lake and river system in northeastern Mecklenburg Bay, southern Baltic Sea [PDF]

Eiszeitalter und Gegenwart
The postglacial geological evolution of the southwestern Baltic Sea is marked by dynamic water level developments, accompanied by pronounced coastline displacements and associated changes in coastal geomorphological features.
J. Granzow, F. Tauber, H. W. Arz, J. Geersen, P. Feldens   +4 more
doaj   +1 more source

Evidence for cable bacteria inhabiting deep in anoxic sediment reveals a novel ecological niche

Environmental Microbiome
Background Cable bacteria are filamentous sulphide-oxidisers capable of cm-scale electron transport. They are generally considered restricted to the upper few oxic–suboxic cm of marine sediments, where they couple sulphide oxidation to oxygen or nitrate ...
Alexis Fonseca, Martijn Hermans, Francisco J. A. Nascimento, Christian Stranne, Alf Norkko, Bo G. Gustafsson, Christoph Humborg   +6 more
doaj   +1 more source