Sulphide detoxification in Hediste diversicolor and Marenzelleria viridis, two dominant polychaete worms within the shallow coastal waters of the southern Baltic Sea

The dissolved oxygen supersaturation in the surface waters was investigated as a factor influencing bubble formation in the southern Baltic Sea coastal waters in Warszów, Lubiatowo and Hel from 1995 to 2007. To quantify the changes of oxygen supersaturation, data were collected along transects using integrated dissolved oxygen and water temperature sensors, either mounted on a remotely operated platform or deployed manually. Data revealed that an excess of solar energy in the nutrient-rich Baltic Sea coastal waters caused an immediate warming of sea bed and bottom water, which induced gaseous supersaturation and enhanced biological production of oxygen by phytoplankton. Both processes increased the degree of dissolved oxygen saturation, which became highly supersaturated, especially during the spring and summer time. Such conditions are favourable for enhanced formation of bubbles in the water, which enhanced the release of gases (mostly oxygen) into the air. Gaseous evasion is, in particular, enhanced in the presence of breaking waves and whitecaps that are typically formed over coastal ridges and at the shore line. Laboratory experiments indicated that, with the increasing degree of dissolved oxygen supersaturation, both the number of bubbles produced in the water and their sizes increase.

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Field studies of eelpout (Zoarces viviparus L.) from Polish coastal waters (southern Baltic Sea)

The Science of The Total Environment ◽

10.1016/j.scitotenv.2006.08.042 ◽

2006 ◽

Vol 371 (1-3) ◽

pp. 144-155 ◽

Cited By ~ 16

Author(s):

Dorota Napierska ◽

Magdalena Podolska

Keyword(s):

Baltic Sea ◽

Coastal Waters ◽

Field Studies ◽

Southern Baltic Sea ◽

Zoarces Viviparus ◽

Southern Baltic

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Reference organisms for assessing the impact of ionizing radiation on the environment of the southern Baltic Sea

Oceanological and Hydrobiological Studies ◽

10.2478/s13545-012-0033-z ◽

2012 ◽

Vol 41 (4) ◽

pp. 1-7 ◽

Cited By ~ 4

Author(s):

Tamara Zalewska ◽

Maria Suplińska

Keyword(s):

Ionizing Radiation ◽

Baltic Sea ◽

Benthic Fauna ◽

Clupea Harengus ◽

Assessment System ◽

Ecological Niches ◽

Hediste Diversicolor ◽

Southern Baltic Sea ◽

Southern Baltic ◽

The Impact

AbstractAssessing the impact of ionizing radiation on the marine environment requires a well-defined methodology, which includes, among other elements, the analysis of exposure and effects. One of the most important components of the assessment system is the choice of reference organisms specific for the assessed area that fulfill requirements such as radioecological sensitivity, widespread distribution, and amenability to research and monitoring. The following species specific to the southern Baltic Sea that represent diversified ecological niches were proposed as reference organisms. Polysiphonia fucoides was proposed as a representative of macroalgae. Pelagic and benthic fauna were represented by Crangon crangon (crustacean), Saduria entomon (crustacean), Hediste diversicolor (polychaete), and Mytilus trossulus (mollusc). Fish were represented by Clupea harengus (pelagic planctotrophic fish), Gadus morhua (pelagic carnivorous fish), and Platichthys flesus (benthic fish). Activity concentrations of 137Cs were determined in reference biota as well as in seawater, as required for the total dose-rate evaluation, and relevant concentration factors were calculated.

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