WFRF:(Bergkvist B.)
Sökning: WFRF:(Bergkvist B.) > N2-fixation, ammoni...
LIBRIS Formathandbok (Information om MARC21)
| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 05033naa a2200565 4500 | |
| 001 | oai:gup.ub.gu.se/231025 | |
| 003 | SwePub | |
| 008 | 240528s2016 | |||||||||||000 ||eng| | |
| 009 | oai:DiVA.org:su-122075 | |
| 009 | oai:DiVA.org:nrm-1992 | |
| 024 | 7 | a https://gup.ub.gu.se/publication/2310252 URI |
| 024 | 7 | a https://doi.org/10.1038/ismej.2015.1262 DOI |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1220752 URI |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-19922 URI |
| 040 | a (SwePub)gud (SwePub)sud (SwePub)nrm | |
| 041 | a eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Adam, Birgit4 aut |
| 245 | 1 0 | a N2-fixation, ammonium release and N-transfer to the microbial and classical food web within a plankton community |
| 264 | c 2015-08-11 | |
| 264 | 1 | b Springer Science and Business Media LLC,c 2016 |
| 520 | a We investigated the role of N2-fixation by the colony-forming cyanobacterium, Aphanizomenon spp., for the plankton community and N-budget of the N-limited Baltic Sea during summer by using stable isotope tracers combined with novel secondary ion mass spectrometry, conventional mass spectrometry and nutrient analysis. When incubated with 15N2, Aphanizomenon spp. showed a strong 15N-enrichment implying substantial 15N2-fixation. Intriguingly, Aphanizomenon did not assimilate tracers of 15NH4+ from the surrounding water. These findings are in line with model calculations that confirmed a negligible N-source by diffusion-limited NH4+ fluxes to Aphanizomenon colonies at low bulk concentrations (<250 nm) as compared with N2-fixation within colonies. No N2-fixation was detected in autotrophic microorganisms <5 mum, which relied on NH4+ uptake from the surrounding water. Aphanizomenon released about 50% of its newly fixed N2 as NH4+. However, NH4+ did not accumulate in the water but was transferred to heterotrophic and autotrophic microorganisms as well as to diatoms (Chaetoceros sp.) and copepods with a turnover time of ~5 h. We provide direct quantitative evidence that colony-forming Aphanizomenon releases about half of its recently fixed N2 as NH4+, which is transferred to the prokaryotic and eukaryotic plankton forming the basis of the food web in the plankton community. Transfer of newly fixed nitrogen to diatoms and copepods furthermore implies a fast export to shallow sediments via fast-sinking fecal pellets and aggregates. Hence, N2-fixing colony-forming cyanobacteria can have profound impact on ecosystem productivity and biogeochemical processes at shorter time scales (hours to days) than previously thought. | |
| 650 | 7 | a NATURVETENSKAPx Biologix Ekologi0 (SwePub)106112 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Biological Sciencesx Ecology0 (SwePub)106112 hsv//eng |
| 650 | 7 | a NATURVETENSKAPx Biologi0 (SwePub)1062 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Biological Sciences0 (SwePub)1062 hsv//eng |
| 653 | a nanoSIMS | |
| 653 | a stable isotopes | |
| 653 | a Marine Ecology | |
| 653 | a Ecosystems and species history | |
| 700 | 1 | a Klawonn, Isabellu Stockholms universitet,Institutionen för ekologi, miljö och botanik4 aut0 (Swepub:su)iklaw |
| 700 | 1 | a Svedén, Jenny B.u Stockholms universitet,Institutionen för ekologi, miljö och botanik4 aut0 (Swepub:su)jesw2940 |
| 700 | 1 | a Bergkvist, Johanna,d 1980u Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences4 aut0 (Swepub:gu)xbjohw |
| 700 | 1 | a Nahar, Nurunu Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences4 aut |
| 700 | 1 | a Walve, Jakobu Stockholms universitet,Institutionen för ekologi, miljö och botanik4 aut0 (Swepub:su)jakobw |
| 700 | 1 | a Littmann, S.4 aut |
| 700 | 1 | a Whitehouse, Martin J.,d 1962-u Naturhistoriska riksmuseet,Enheten för geovetenskap,Nordsim4 aut0 (Swepub:nrm)martwhit |
| 700 | 1 | a Lavik, G.4 aut |
| 700 | 1 | a Kuypers, M. M.4 aut |
| 700 | 1 | a Ploug, Helleu Stockholms universitet,Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences,Institutionen för ekologi, miljö och botanik,University of Gothenburg, Sweden4 aut0 (Swepub:su)hplou |
| 710 | 2 | a Stockholms universitetb Institutionen för ekologi, miljö och botanik4 org |
| 773 | 0 | t The ISME Journald : Springer Science and Business Media LLCg 10:2, s. 450-459q 10:2<450-459x 1751-7362x 1751-7370 |
| 856 | 4 | u https://www.nature.com/articles/ismej2015126.pdf |
| 856 | 4 | u http://www.nature.com/ismej/journal/v10/n2/abs/ismej2015126a.html |
| 856 | 4 8 | u https://gup.ub.gu.se/publication/231025 |
| 856 | 4 8 | u https://doi.org/10.1038/ismej.2015.126 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-122075 |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-1992 |
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