By Karol Kulinski, Janusz Pempkowiak
The Baltic Sea is a space commonly explored by way of the oceanographers. as a result it really is essentially the most frequently defined marine components within the medical literature. in spite of the fact that, there are nonetheless numerous fields that are poorly investigated and said by way of scientists. certainly one of them is the carbon cycle of the Baltic Sea. even though it is assumed the shelf seas are liable for approximately 20% of all marine carbon dioxide uptake, whereas they represent in simple terms 7% of the complete sea floor, nonetheless a systematic debate exists at the position of the Baltic Sea within the international carbon cycle. “Carbon cycle of the Baltic Sea” is meant to be a complete presentation and dialogue of state-of-the-art examine by means of biogeochemists interested in the Baltic Sea carbon cycle study. This paintings provides either qualitative and quantitative descriptions of the most carbon flows within the Baltic Sea in addition to their attainable shifts triggered by means of climatic and worldwide change.
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Extra info for Carbon Cycling in the Baltic Sea
Hensen et al. (2006) estimated that less than 5% of the oceanic POC reaches the depth of 1,000 m. This part of POC that is actually delivered to, and deposited in the sediments participates in digenetic processes, conditioned largely by redox potential (Frudenthal et al. 2001, Rullkötter 2006). As a result of cells lyses, dissolved organic substances (DOC) are released to the water column. Other sources of DOC in water include its excretion by living organism, release during zooplankton sloppy feeding or during bacterial and viral infections (Carlson 2002).
2001) 90–120 90–125 80–100 70 70 18 84 190 200 261 82 52 17 150 34 2 Climate and Carbon Cycle Organic carbon is deposited mainly in areas of fine-grained sediments (mud-clay) covering 32% of the Baltic Sea bottom (Fig. 12; Emeis et al. 2000; Al-Hamdani and Reker 2007). This type of sediments is characterized by high organic carbon concentrations, reaching 10–11% in the uppermost sediment layers. Such high concentrations result from sedimentation of material that is rich in organic matter, and the permanent oxygen deficit in the sediments.
2005; Huertas et al. 2009). 4 Role of Shelf Seas in the Atmospheric Carbon Dioxide Absorption Shelf seas are coastal waters connecting the land, the atmosphere and the open ocean; their extent is usually limited to water shallower than 200 m (Thomas et al. 2009). 5% of their total water volume (Chen and Borges 2009), they play an important role in the global carbon cycle. It is assumed that 20% of total organic matter originating in the marine environment is produced within shelf seas, while 80% of the total organic matter load deposited to the World Ocean sediments is deposited in the shelf seas (Borges 2005).