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Effects of lead (PbCl2) on photosynthesis and respiration of the bladderwrack, Fucus vesiculosus, in relation to different salinities.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
Responsible organisation
1999 (English)In: Water, Air and Soil Pollution, ISSN 0049-6979, Vol. 116, no 3-4, 549-565 p.Article in journal (Refereed) Published
Abstract [en]

The photosynthetic and respiratoric capacity of Fucus vesiculosus grown at three different levels of salinity (4.5, 8 and 20‰) was studied in the presence of different concentrations of lead (5, 10, 15, 20, 25, and 30 mg PbCl2 L-1). The studies were performed by using a light-pipette, which has a precisely defined light source of photosynthetic active radiation (PAR, 400-700 nm). The photosynthetic and respiratoric capacity of the algae were measured when exposed to light pulses with increasing irradiance and after 24 hr in seawater with the addition of lead. The results indicate that the photosynthetic capacity of F. visiculosus from 20‰ is more sensitive to lead compared to those from 8 and 4.5‰. The photosynthetic capacity was reduced by 69% at 30 mg PbCl2 L-1 compared to the control alga. The photosynthetic capacity of F vesiculosus from 8 and 4.5‰ was reduced by 38 and 15%. The respiratoric capacity of F. vesiculosus from 20‰ was reduced by 41% at 30 mg PbCl2 L-1. However, the respiratoric capacity of the algae from 4.5‰ increased by 55% at the same concentration of PbCl2. The results indicate that lead showed inhibitory effects on photosynthesis but a stimulatory effect on respiration of F versiculosus grown at low levels of salinity.

Place, publisher, year, edition, pages
1999. Vol. 116, no 3-4, 549-565 p.
Keyword [en]
Lead ; Water pollution ; Photosynthesis ; Respiration ; Photorespiration ; Marine environment ; Sweden ; Coastal zone ; Fucus vesiculosus ; Europe ; Heavy metal ; Phaeophyceae ; Heterokontophyta ; Algae ; Thallophyta ;
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:miun:diva-1869DOI: 10.1023/A:1005191011421ISI: 000083273200007Local ID: 666OAI: oai:DiVA.org:miun-1869DiVA: diva2:26901
Available from: 2008-12-10 Created: 2008-12-10Bibliographically approved
In thesis
1. Ecophysiological responses of Baltic and Atlantic Fucus vesiculosus to environmental factors
Open this publication in new window or tab >>Ecophysiological responses of Baltic and Atlantic Fucus vesiculosus to environmental factors
2005 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The Baltic Sea is a species-poor ecosystem where marine species coexist with freshwater species. The Baltic Sea offers low salinity, low content of inorganic carbon, long cold winters and no tides.One of the few marine species that can be found in the Baltic, is the brown alga Fucus vesiculosus, which is regarded as ecologically the most important alga in this area. The aim of the present thesis was to examine physiological (photosynthesis and growth) differences between F. vesiculosus in the Bothnian Sea (northern Baltic) and the Atlantic. Measurements were performed with plants in their natural seawaters and under changed conditions of salinity, temperature, nutrients and inorganic carbon concentrations.

Place, publisher, year, edition, pages
Sundsvall: Mittuniversitetet, 2005. 44 p.
Series
Mid Sweden University doctoral thesis, ISSN 1652-893X ; 6
Keyword
acclimation, Atlantic, Baltic Sea, Bothnian Sea, Cd, Fucus vesiculosus, growth, high PAR, Pb, photosynthesis, salinity, stress, UV-B
National Category
Biological Sciences
Identifiers
urn:nbn:se:miun:diva-5880 (URN)4405 (Local ID)91-85317-15-2 (ISBN)4405 (Archive number)4405 (OAI)
Public defence
2005-12-09, M108, Åkroken, Sundsvall, 10:00 (English)
Supervisors
Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2009-07-13Bibliographically approved

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Nygård, CharlottaEkelund, Nils
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