Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Filamentous cyanobacteria in the Baltic Sea - spatiotemporal patterns and nitrogen fixation
Stockholm University, Faculty of Science, Department of Systems Ecology.
2007 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Summer blooms of filamentous, diazotrophic cyanobacteria are typical of the Baltic Sea Proper, and are dominated by Aphanizomenon sp. and the toxic Nodularia spumigena. Although occurring every summer, the blooms vary greatly in timing and spatial distribution, making monitoring difficult and imprecise. This thesis studies how the spatial variability of Baltic cyanobacterial blooms influences estimates of abundance, vertical and horizontal distribution and N2-fixation. Implications for sampling and monitoring of cyanobacterial blooms are also discussed.

The results of the thesis confirm the importance of diazotrophic cyanobacteria in providing N for summer production in the Baltic Proper. It also highlights the large spatial and temporal variation in these blooms and argues that improved spatial coverage and replication could make monitoring data more useful for demonstrating time trends, and for identifying the factors regulating the blooms. The vertical distribution of Aphanizomenon and Nodularia was found to be spatially variable, probably as a combination of species-specific adaptations and ambient weather conditions. Vertical migration in Aphanizomenon was more important towards the end of summer, and is probably regulated by a trade-off between P-availability and light and temperature.

Place, publisher, year, edition, pages
Stockholm: Systemekologiska institutionen , 2007. , 32 p.
Keyword [en]
Aphanizomenon sp., Nodularia spumigena, Baltic Sea, image analysis, spatial variability, nitrogen fixation, vertical migration
Research subject
Marine Ecology
Identifiers
URN: urn:nbn:se:su:diva-7099ISBN: 978-91-7155-512-0 (print)OAI: oai:DiVA.org:su-7099DiVA: diva2:197624
Public defence
2007-11-02, Nordenskiöldsalen, Geovetenskapens hus, Svante Arrhenius väg 8 C, Stockholm, 10:00
Opponent
Supervisors
Available from: 2007-10-11 Created: 2007-10-05Bibliographically approved
List of papers
1. Automated measurements of filamentous cyanobacteria by digital image analysis
Open this publication in new window or tab >>Automated measurements of filamentous cyanobacteria by digital image analysis
2007 In: Limnology and Oceanography: Methods, Vol. 5, 217-224 p.Article in journal (Refereed) Published
Identifiers
urn:nbn:se:su:diva-24471 (URN)000248743300001 ()
Note
Part of urn:nbn:se:su:diva-7099Available from: 2007-10-11 Created: 2007-10-05Bibliographically approved
2. The effect of hose diameter on depth-integrated sampling of filamentous cyanobacteria
Open this publication in new window or tab >>The effect of hose diameter on depth-integrated sampling of filamentous cyanobacteria
Manuscript (Other academic)
Identifiers
urn:nbn:se:su:diva-24472 (URN)
Note
Part of urn:nbn:se:su:diva-7099Available from: 2007-10-11 Created: 2007-10-05 Last updated: 2010-01-13Bibliographically approved
3. Nitrogen fixation and abundance of the diazotrophic cyanobacterium Aphanizomenon sp. in the Baltic Proper
Open this publication in new window or tab >>Nitrogen fixation and abundance of the diazotrophic cyanobacterium Aphanizomenon sp. in the Baltic Proper
2007 In: Marine Ecology Progress Series, ISSN 0171-8630, Vol. 332, 107-118 p.Article in journal (Refereed) Published
Identifiers
urn:nbn:se:su:diva-24473 (URN)000245542400009 ()
Note
Part of urn:nbn:se:su:diva-7099Available from: 2007-10-11 Created: 2007-10-05Bibliographically approved
4. Vertical and horizontal distribution of Aphanizomenon sp. and Nodularia spumigena in the Baltic Sea
Open this publication in new window or tab >>Vertical and horizontal distribution of Aphanizomenon sp. and Nodularia spumigena in the Baltic Sea
Manuscript (Other academic)
Identifiers
urn:nbn:se:su:diva-24474 (URN)
Note
Part of urn:nbn:se:su:diva-7099Available from: 2007-10-11 Created: 2007-10-05 Last updated: 2010-01-13Bibliographically approved
5. Experimental vertical migration in Aphanizomenon sp.: the influence on biovolume concentration and filament length
Open this publication in new window or tab >>Experimental vertical migration in Aphanizomenon sp.: the influence on biovolume concentration and filament length
Manuscript (Other academic)
Identifiers
urn:nbn:se:su:diva-24475 (URN)
Note
Part of urn:nbn:se:su:diva-7099Available from: 2007-10-11 Created: 2007-10-05 Last updated: 2010-01-13Bibliographically approved

Open Access in DiVA

fulltext(313 kB)913 downloads
File information
File name FULLTEXT01.pdfFile size 313 kBChecksum SHA-1
7fbca074f57893f4c5a117cd5a3e154320dc62b5db437d87446746859a7e685ee15c7a0e
Type fulltextMimetype application/pdf

By organisation
Department of Systems Ecology

Search outside of DiVA

GoogleGoogle Scholar
Total: 913 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 894 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf