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Diurnal carbon dioxide exchange rates of Saccharina latissima and Laminaria digitata as affected by salinity levels in Norwegian fjords
The Norwegian fjords are strongly influenced by freshwater runoff from the mountain regions as a result of high precipitation. The macroalgae growing in the fjords may therefore be frequently exposed to low salinity levels. This may affect the potential for cultivating kelp in the fjords. In the pre...
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| Published in: | Journal of applied phycology 2017-12, Vol.29 (6), p.3067-3075 |
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| creator | Mortensen, Leiv M. |
| description | The Norwegian fjords are strongly influenced by freshwater runoff from the mountain regions as a result of high precipitation. The macroalgae growing in the fjords may therefore be frequently exposed to low salinity levels. This may affect the potential for cultivating kelp in the fjords. In the present study, the sensitivity to salinity levels of 10, 16, 24 or 34‰ was studied by measuring the carbon dioxide exchange rate (CER) in young sporophytes of
Saccharina latissima
and
Laminaria digitata
continuously over several days. A positive CER was found down to the freezing point of −2 °C as well as a positive CER during darkness depending on the irradiance level of the previous day. Decreasing the salinity from 34 to 24, 16 or 10‰ reduced the daily CO
2
uptake by 50, 85 or 100%, respectively, in
S. latissima
. The negative effect of decreasing salinity to 10‰ was irreversible. In
L. digitata
, the daily CO
2
uptake was reduced by 20, 30 or 40% by decreasing the salinity from 34‰ to the respective salinity levels. The reduction in the CER at 10‰ was fully reversible. These results were consistent with the observations in a fjord dominated by brackish water where
L. digitata
was abundant and
S. latissima
absent. |
| doi_str_mv | 10.1007/s10811-017-1183-6 |
| format | article |
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Saccharina latissima
and
Laminaria digitata
continuously over several days. A positive CER was found down to the freezing point of −2 °C as well as a positive CER during darkness depending on the irradiance level of the previous day. Decreasing the salinity from 34 to 24, 16 or 10‰ reduced the daily CO
2
uptake by 50, 85 or 100%, respectively, in
S. latissima
. The negative effect of decreasing salinity to 10‰ was irreversible. In
L. digitata
, the daily CO
2
uptake was reduced by 20, 30 or 40% by decreasing the salinity from 34‰ to the respective salinity levels. The reduction in the CER at 10‰ was fully reversible. These results were consistent with the observations in a fjord dominated by brackish water where
L. digitata
was abundant and
S. latissima
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Saccharina latissima
and
Laminaria digitata
continuously over several days. A positive CER was found down to the freezing point of −2 °C as well as a positive CER during darkness depending on the irradiance level of the previous day. Decreasing the salinity from 34 to 24, 16 or 10‰ reduced the daily CO
2
uptake by 50, 85 or 100%, respectively, in
S. latissima
. The negative effect of decreasing salinity to 10‰ was irreversible. In
L. digitata
, the daily CO
2
uptake was reduced by 20, 30 or 40% by decreasing the salinity from 34‰ to the respective salinity levels. The reduction in the CER at 10‰ was fully reversible. These results were consistent with the observations in a fjord dominated by brackish water where
L. digitata
was abundant and
S. latissima
absent.</description><subject>Algae</subject><subject>Biomedical and Life Sciences</subject><subject>Brackish water</subject><subject>Carbon dioxide</subject><subject>Darkness</subject><subject>Diurnal</subject><subject>Ecology</subject><subject>Fjords</subject><subject>Freezing</subject><subject>Freezing point</subject><subject>Freshwater</subject><subject>Freshwater & Marine Ecology</subject><subject>Inland water environment</subject><subject>Irradiance</subject><subject>Kelp</subject><subject>Laminaria digitata</subject><subject>Life Sciences</subject><subject>Melting points</subject><subject>Mountain regions</subject><subject>Plant Physiology</subject><subject>Plant Sciences</subject><subject>Runoff</subject><subject>Saccharina latissima</subject><subject>Saline water</subject><subject>Salinity</subject><subject>Salinity effects</subject><subject>Seaweeds</subject><subject>Sporophytes</subject><subject>Uptake</subject><issn>0921-8971</issn><issn>1573-5176</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp1kM1OwzAQhC0EEqXwANwscTZ4kyZ2jqj8ShUcgLO18U9xlTrFDtA-Aa-NSzlw4bTSaGa08xFyCvwcOBcXCbgEYBwEA5Alq_fICCpRsgpEvU9GvCmAyUbAITlKacE5byTIEfm68u8xYEc1xrYP1Ph-7Y2ldq1fMcwtjTjYRHtHn1BnKfqAtMPBp-SXSDEYOsNlFqPHHJ77AYcsJ4rOWT1YQ9sNTdj54IcN7eyH7RL1gT708dPOPQbqFn006ZgcOOySPfm9Y_Jyc_08vWOzx9v76eWM6RLqgdnGlbUUArSYlFrLVlSmFILn9bbI6wrktQRtJtJIqfMLTja6MYW2RrcArhyTs13vKvZv7zYNatH_AEgKmroRFUxqnl2wc-nYpxStU6uY58aNAq62vNWOt8q81Za3qnOm2GVS9mZy8U_zv6FvF2iFIQ</recordid><startdate>20171201</startdate><enddate>20171201</enddate><creator>Mortensen, Leiv M.</creator><general>Springer Netherlands</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7TN</scope><scope>7X2</scope><scope>8FE</scope><scope>8FH</scope><scope>8FK</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>H95</scope><scope>HCIFZ</scope><scope>L.G</scope><scope>LK8</scope><scope>M0K</scope><scope>M7N</scope><scope>M7P</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><orcidid>https://orcid.org/0000-0002-4724-5131</orcidid></search><sort><creationdate>20171201</creationdate><title>Diurnal carbon dioxide exchange rates of Saccharina latissima and Laminaria digitata as affected by salinity levels in Norwegian fjords</title><author>Mortensen, Leiv M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c316t-e9f368771c743cc8b75d3770108e29712a0681cd48d88cffef89c9d2cedcb11f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Algae</topic><topic>Biomedical and Life Sciences</topic><topic>Brackish water</topic><topic>Carbon dioxide</topic><topic>Darkness</topic><topic>Diurnal</topic><topic>Ecology</topic><topic>Fjords</topic><topic>Freezing</topic><topic>Freezing point</topic><topic>Freshwater</topic><topic>Freshwater & Marine Ecology</topic><topic>Inland water environment</topic><topic>Irradiance</topic><topic>Kelp</topic><topic>Laminaria digitata</topic><topic>Life Sciences</topic><topic>Melting points</topic><topic>Mountain regions</topic><topic>Plant Physiology</topic><topic>Plant Sciences</topic><topic>Runoff</topic><topic>Saccharina latissima</topic><topic>Saline water</topic><topic>Salinity</topic><topic>Salinity effects</topic><topic>Seaweeds</topic><topic>Sporophytes</topic><topic>Uptake</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mortensen, Leiv M.</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Oceanic Abstracts</collection><collection>Agricultural Science Collection</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>ProQuest Natural Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central 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Leiv M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Diurnal carbon dioxide exchange rates of Saccharina latissima and Laminaria digitata as affected by salinity levels in Norwegian fjords</atitle><jtitle>Journal of applied phycology</jtitle><stitle>J Appl Phycol</stitle><date>2017-12-01</date><risdate>2017</risdate><volume>29</volume><issue>6</issue><spage>3067</spage><epage>3075</epage><pages>3067-3075</pages><issn>0921-8971</issn><eissn>1573-5176</eissn><abstract>The Norwegian fjords are strongly influenced by freshwater runoff from the mountain regions as a result of high precipitation. The macroalgae growing in the fjords may therefore be frequently exposed to low salinity levels. This may affect the potential for cultivating kelp in the fjords. In the present study, the sensitivity to salinity levels of 10, 16, 24 or 34‰ was studied by measuring the carbon dioxide exchange rate (CER) in young sporophytes of
Saccharina latissima
and
Laminaria digitata
continuously over several days. A positive CER was found down to the freezing point of −2 °C as well as a positive CER during darkness depending on the irradiance level of the previous day. Decreasing the salinity from 34 to 24, 16 or 10‰ reduced the daily CO
2
uptake by 50, 85 or 100%, respectively, in
S. latissima
. The negative effect of decreasing salinity to 10‰ was irreversible. In
L. digitata
, the daily CO
2
uptake was reduced by 20, 30 or 40% by decreasing the salinity from 34‰ to the respective salinity levels. The reduction in the CER at 10‰ was fully reversible. These results were consistent with the observations in a fjord dominated by brackish water where
L. digitata
was abundant and
S. latissima
absent.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s10811-017-1183-6</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-4724-5131</orcidid></addata></record> |
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| ispartof | Journal of applied phycology, 2017-12, Vol.29 (6), p.3067-3075 |
| issn | 0921-8971 1573-5176 |
| language | eng |
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| source | Springer Nature |
| subjects | Algae Biomedical and Life Sciences Brackish water Carbon dioxide Darkness Diurnal Ecology Fjords Freezing Freezing point Freshwater Freshwater & Marine Ecology Inland water environment Irradiance Kelp Laminaria digitata Life Sciences Melting points Mountain regions Plant Physiology Plant Sciences Runoff Saccharina latissima Saline water Salinity Salinity effects Seaweeds Sporophytes Uptake |
| title | Diurnal carbon dioxide exchange rates of Saccharina latissima and Laminaria digitata as affected by salinity levels in Norwegian fjords |
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