Search: onr:"swepub:oai:diva.org:miun-8845" >
Desiccation and sal...
Desiccation and salinity effects on marine and brackhish Fucus vesiculosus L. (Phaeophyceae).
-
- Gylle, A Maria (author)
- Mittuniversitetet,Institutionen för naturvetenskap, teknik och matematik (-2012),Ekofysiologi och alger
-
- Nygård, Charlotta A (author)
- Länsstyrelsen Västernorrland
-
- Ekelund, Nils GA, 1956- (author)
- Mittuniversitetet,Institutionen för naturvetenskap, teknik och matematik (-2012),Ekofysiologi och alger
-
(creator_code:org_t)
- 2019-04-22
- 2009
- English.
-
In: Phycologia. - : Informa UK Limited. - 0031-8884 .- 2330-2968. ; 48:3, s. 156-164
- Related links:
-
http://www.phycologi...
-
show more...
-
https://urn.kb.se/re...
-
https://doi.org/10.2...
-
https://urn.kb.se/re...
-
show less...
Abstract
Subject headings
Close
- Ecotypes of Fucus vesiculosus L. from the Norwegian Sea (34 psu, marine ecotype) and Bothnian Sea (5 psu, brackish ecotype) have been compared with respect to the ability to withstand desiccation at different temperatures (0, 10, and 20°C). The aim was also to investigate the importance of salinity and light for the availably energy reserves, osmotic adjustment, and pigment content. The maximum quantum yield of photosystem II photochemistry (Fv/Fm) values revealed that the marine ecotype was more able to resist desiccation. The brackish algae showed a decrease in Fv/Fm as a response to desiccation at all temperatures, but the decrease was most pronounced at 20°C. The brackish ecotype recovered from desiccation within 5 h only when treated at 0°C. When the two ecotypes were treated at different levels of salinity in darkness and light, the results suggested that both salinity and irradiance are main factors in the differences in mannitol content between the two ecotypes. Chlorophyll (Chl) measurements showed 25% higher Chl α and 60% higher Chl c in the brackish ecotype in comparison to the marine ecotype. Darkness had a more pronounced effect on the Chl content than the salinity and initiated an increase in the amount of Chl, especially Chl c in the brackish ecotype.
Subject headings
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Keyword
- Brackish
- Chlorophyll
- Emersion
- Mannitol
- Marine
- Photosynthetic maximal quantum yield (Fv/Fm)
- Marine ecology
- Marin ekologi
Publication and Content Type
- vet (subject category)
- art (subject category)
Find in a library
-
Phycologia
(Search for host publication in LIBRIS)
To the university's database