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Contrasting distrib...
Contrasting distribution and speciation of sedimentary organic phosphorus among different basins of the Baltic Sea
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- Rydin, Emil (author)
- Stockholms universitet,Stockholms universitets Östersjöcentrum,Stockholm Univ, Balt Sea Ctr, Stockholm, Sweden.
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- Broman, Elias, 1985- (author)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,Stockholms universitets Östersjöcentrum,Stockholm Univ, Balt Sea Ctr, Stockholm, Sweden.;Stockholm Univ, Dept Biol Environm & Plant Sci, Stockholm, Sweden.
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- Reitzel, Kasper (author)
- Univ Southern Denmark, Dept Biol, Odense, Denmark.
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- Lukkari, Kaarina (author)
- Finnish Environm Inst, Helsinki, Finland.
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- Hermans, Martijn, 1991- (author)
- Stockholms universitet,Stockholms universitets Östersjöcentrum,University of Helsinki, Finland,Stockholm Univ, Balt Sea Ctr, Stockholm, Sweden.;Univ Helsinki, Environm Geochem Grp, Fac Sci, Helsinki, Finland.;Univ Helsinki, Fac Biol & Environm Sci, Ecosyst & Environm Res Program, ABRU, Helsinki, Finland.
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- Kumblad, Linda (author)
- Stockholms universitet,Stockholms universitets Östersjöcentrum,Stockholm Univ, Balt Sea Ctr, Stockholm, Sweden.
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- Karlsson, Magnus (author)
- IVL Swedish Environm Res Inst, Stockholm, Sweden.
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- Apler, Anna (author)
- Swedish Geol Survey, Uppsala, Sweden.
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- Ek, Bo (author)
- Uppsala universitet,Analytisk kemi
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- Sjöberg, Per J. R. (author)
- Uppsala universitet,Analytisk kemi
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(creator_code:org_t)
- 2023-02-03
- 2023
- English.
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In: Limnology and Oceanography. - : John Wiley & Sons. - 0024-3590 .- 1939-5590. ; 68:4, s. 767-779
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Abstract
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- Recycling of phosphorus (P) from deoxygenated sediments perpetuates eutrophic conditions in parts of the Baltic Sea. Sedimentary organic P is a major source of dissolved P to the water column, but also a sink for permanent P burial. The mechanisms behind these two pathways are, however, largely unknown. Using new methods, we determined P in DNA and phospholipids, which are both found in all organisms. We also identified inositol phosphates that are particularly important in eukaryotes. Sediment cores were collected from contrasting basins in the Baltic Sea to study their relative contribution to the total P pool. We found high DNA-P/phospholipid-P ratios in surface sediments from the Bothnian Bay and Bothnian Sea. However, these ratios were low throughout profiles in euxinic Baltic Proper sediments. The elevated ratios present in sediments overlain by oxic bottom waters might indicate the presence of a microbial community stimulated by bioturbation, whereas the low DNA-P/phospholipid-P ratios in Baltic Proper sediments likely indicate an energy-limited microbial community, typical to the "deep biosphere" environment. Inositol-P was almost absent in euxinic Baltic Proper sediments that had a low total P amount compared to those in the other basins. We suggest that variability in the composition of sedimentary microbial communities among the Baltic Sea basins might cause differences in organic P forms that in turn affects its turnover.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Oceanografi, hydrologi och vattenresurser (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Oceanography, Hydrology and Water Resources (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geokemi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geochemistry (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Rydin, Emil
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Broman, Elias, 1 ...
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Reitzel, Kasper
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Lukkari, Kaarina
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Hermans, Martijn ...
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Kumblad, Linda
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Karlsson, Magnus
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Apler, Anna
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Ek, Bo
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Sjöberg, Per J. ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Oceanography Hyd ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Geochemistry
- Articles in the publication
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Limnology and Oc ...
- By the university
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Uppsala University
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Stockholm University