Mercury in the diatoms of various ecological formations
Magdalena Bełdowska , Aleksandra Zgrundo , Justyna Kobos
AbstractMercury is a neurotoxin, its main source in the human organism being fish and seafood. The first level in the marine food web is formed of planktonic and benthic photosynthetic microorganisms, which form a biofilm on the surface of the hard bottom (epilithon) or plants (epiphyton). They are carriers of nutritional as well as toxic substances and pass these on to subsequent levels of the trophic web. Their biomass is often dominated by diatoms. This was the basis for the presented study into Hg accumulation in epilithic, epiphytic and planktonic diatoms, which was carried out in 2012–2013 in the coastal zone of the Puck Lagoon and the Gulf of Gdańsk (southern Baltic). In this coastal area, both micro- and macroorganisms develop particularly intensively. The collected results indicate an increase in Hg concentration in the biofilm during the warm season which, with the lengthening of the vegetative period due to global warming in recent years, is of great significance. As a consequence, the annual mercury load entering the trophic web is larger in comparison with a year in which there is a long, cold winter. An important parameter influencing the accumulation of Hg was the function of those organisms from the biofilm-forming communities. In this case, the highest concentrations of Hg were measured in organisms forming high-profile guilds.
|Journal series||Water Air and Soil Pollution, ISSN 0049-6979, (A 25 pkt)|
|Publication size in sheets||0.60|
|Keywords in English||Hg, diatoms, epilithon, epiphyton, phytoplankton, high-profile guild|
|ASJC Classification||; ; ; ;|
|License||Other; published final; ; with publication|
|Score||= 25.0, 05-02-2020, ArticleFromJournal|
|Publication indicators||= 2.000; : 2017 = 0.728; : 2018 = 1.774 (2) - 2018=1.963 (5)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.