uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • 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
Genetic variability and level of differentiation in North Sea and Baltic Sea populations of the green alga Cladophora rupestris
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Evolutionary Biology, Plant Ecology.
Article in journal (Refereed) Submitted
Identifiers
URN: urn:nbn:se:uu:diva-90031OAI: oai:DiVA.org:uu-90031DiVA: diva2:162058
Available from: 2002-10-16 Created: 2002-10-16Bibliographically approved
In thesis
1. Factors Affecting the Distribution of Rocky-Shore Macroalgae on the Swedish Coast: Morphological, Physiological, Reproductive and Genetic Aspects
Open this publication in new window or tab >>Factors Affecting the Distribution of Rocky-Shore Macroalgae on the Swedish Coast: Morphological, Physiological, Reproductive and Genetic Aspects
2002 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The aim of this thesis was to examine factors affecting the distribution of macroalgal species both vertically (depth zonation) and geographically along the Baltic Sea salinity gradient. Interactions between the physical environment and basic biological traits of the algae are emphasised.

Previously well-described macroalgal vegetation profiles were re-investigated. Long-term changes of the vegetation that can be coupled to an increased large-scale eutrophication were recorded in both the Baltic Sea and in the Skagerrak.

Photosynthetic properties of macroalgae with different morphologies from typical depth zonations in the Skagerrak and the Baltic Sea were assessed. A novel method that makes it possible to classify macroalgal species along a morphological gradient based on photosynthetic properties is presented. Such a gradient can be used as an alternative to more discrete subdivisions into functional-form groups.

Small-scale variation in the natural sediment load was shown to affect the composition of sublittoral rocky-shore macroalgal communities in a long-term field experiment. Generally, species with an extended reproductive period were more tolerant to sedimentation than species depending on short periods of spore release. The effect of the sediment treatments increased with depth.

Field experiments in the Baltic Sea showed that fragments of Furcellarialumbricalis, Polysiphoniafucoides and Rhodomela confervoides are able to reattach to the substrate under field conditions. This enables persistence of populations since these species are practically sterile in the area. Field observations suggested that sessile animals can facilitate the fixation of algal fragments to the substrate.

Genetic variation of the chlorophyte Cladophorarupestris was assessed by allozyme electrophoresis. Two genetically differentiated groups of populations were found, one Baltic Sea group and one North Sea group, with a distinct border in the southern Kattegat near the entrance to the Baltic Sea.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2002. 34 p.
Series
Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1104-232X ; 759
Keyword
Ecology, Ekologi
National Category
Ecology
Research subject
Ecological Botany
Identifiers
urn:nbn:se:uu:diva-2693 (URN)91-554-5430-5 (ISBN)
Public defence
2002-11-08, Department of Plant Ecology, Villavägen 14, Uppsala, 10:00
Opponent
Available from: 2002-10-16 Created: 2002-10-16Bibliographically approved

Open Access in DiVA

No full text

By organisation
Plant Ecology

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 364 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • 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