scholarly journals The role of surface storage of brackish marshes in the southern area of the Baltic Sea (northern Poland)

2017 ◽  
Vol 48 (6) ◽  
pp. 1682-1696
Author(s):  
Roman Cieśliński ◽  
Joanna Jokiel
Keyword(s):  
Surface Water ◽  
Baltic Sea ◽  
The Baltic Sea ◽  
Winter Storms ◽  
Marsh Area ◽  
Brackish Marshes ◽  
The Baltic ◽  
Simultaneous Influence ◽  
Maximum Retention

Abstract This paper attempts to define the dynamics of the surface storage in water circulation in brackish marshes located in the contact zone of the land and sea. This study estimated the quantity of water stored in the area of the Beka reserve during mapping between December 2011 and December 2013. The study area is characterized by the simultaneous influence of marine and fresh waters. The hydrographic situations observed in the area of the Beka reserve are a momentary picture of the surface storage. The maximum retention periods of surface water on the Beka reserve include nearly 40% of the marsh area. The main source of supply of such large quantities of water is not only the atmospheric supply, but also the seawater inflow, particularly often observed during the autumn–winter storms in the Baltic Sea, as well as other periodic flooding of water from the rivers, canals and ditches located within the reserve. At other times, the area occupied by the surface water is, on average, from ca. 2% to nearly 12%. Only in the summer periods is a decrease in the surface (below 1%) observed due to the strong evapotranspiration in the study area.

Nitrogen fixation in a diazotrophic post-bloom situation in the Baltic Sea

2021 ◽  
Author(s):  
Christian Reeder ◽  
Carolin Löscher
Keyword(s):  
Climate Change ◽  
Surface Water ◽  
Baltic Sea ◽  
The Baltic Sea ◽  
Biological Fixation ◽  
Community Based ◽  
Iron Iron ◽  
The Baltic ◽  
Metal Cofactors ◽  
Diazotrophic Community

<p>The Baltic Sea is characterised as a semi-enclosed brackish Sea that has experienced increased eutrophication, hypoxia, and increased temperature over the last ~100 years making Baltic Sea one of the most severely impacted oceanic environment by climate change. Biological fixation of dinitrogen gas (N<sub>2</sub>) is an essential process to make atmospheric N<sub>2</sub> available for marine life. This process is carried out by specialised organisms called diazotrophs and is catalysed by the energetic-consuming enzyme nitrogenase. Nitrogenases exist in three subtypes depending on their metal cofactors, (1) the most common molybdenum-dependent (Nif), (2) the vanadium-dependent (Vnf) and (3) the Iron-Iron-dependent nitrogenase (Anf). To date, the effect of climate change on those three enzyme subtypes and their potential role a future ocean is yet to be explored. The predicted ongoing oxygen loss in the ocean may limit Mo's availability and trigger a shift from the abundant Nif-type nitrogenase to Vnf or Anf and, therefore, a potential shift in the diazotrophic community. This study explored the climate change-related pressures on N<sub>2</sub> fixation and the diazotrophic community based on nifH and vnf/anfD amplicons. At the time of sampling, we found a post-bloom high-nutrient low-chlorophyll situation. Cyanobacterial groups, Nodularia and UCYN-A, dominated the diazotrophic community and showed a horizontal where UCYN-A were the dominant fixers at 20 m. Based on alternative nitrogenases amplicons, Rhodopseudomonas was the dominating microbe in the surface water. This paper presents the first hint of active nitrogenases in surface water and further establish UCYN-A as a significant player in Baltic Sea primary production.</p>

Modelling the uptake and release of carbon dioxide in the Baltic Sea surface water

2009 ◽  
Vol 29 (7) ◽  
pp. 870-885 ◽  
Author(s):  
Anders Omstedt ◽  
Erik Gustafsson ◽  
Karin Wesslander
Keyword(s):  
Carbon Dioxide ◽  
Surface Water ◽  
Baltic Sea ◽  
Sea Surface ◽  
The Baltic Sea ◽  
The Baltic ◽  
Uptake And Release

scholarly journals Draft Genome Sequence of Paracoccus sp. Strain 228, Isolated from Surface Water of the Gulf of Gdańsk in the Baltic Sea

2019 ◽  
Vol 8 (29) ◽  
Author(s):  
Joanna Karczewska-Golec ◽  
Maja Kochanowska-Łyżen ◽  
Magdalena Bałut ◽  
Arkadiusz Piotrowski ◽  
Piotr Golec ◽  
...  
Keyword(s):  
Surface Water ◽  
Baltic Sea ◽  
Genome Sequence ◽  
Draft Genome ◽  
Draft Genome Sequence ◽  
Gulf Of Gdańsk ◽  
The Baltic Sea ◽  
Content Type ◽  
Gulf Of Gdansk ◽  
The Baltic

We present here the draft genome sequence of Paracoccus sp. strain 228, isolated from the Gulf of Gdańsk in the southern part of the Baltic Sea. The assembly contains 4,131,609 bp in 32 scaffolds.

The Role of the Barotropic Water Exchange in the Formation of the Baltic Sea-Level Spectrum

2015 ◽  
Vol 55 (1) ◽  
pp. 5-15
Author(s):  
E. A. Kulikov ◽  
I. P. Medvedev ◽  
K. P. Koltermann
Keyword(s):  
Baltic Sea ◽  
Sea Level ◽  
Water Exchange ◽  
The Baltic Sea ◽  
Level Spectrum ◽  
The Baltic

Probable causes for cyanobacterial expansion in the Baltic Sea: Role of anoxia and phosphorus retention

Estuaries ◽  
2003 ◽  
Vol 26 (3) ◽  
pp. 680-689 ◽  
Author(s):  
Per Westman ◽  
Johanna Borgendahl ◽  
Thomas S. Bianchi ◽  
Nianhong Chen
Keyword(s):  
Baltic Sea ◽  
Phosphorus Retention ◽  
The Baltic Sea ◽  
The Baltic
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