Greenland Tidal Pools as Hot Spots for Ecosystem Metabolism and Calcification
The hypothesis that Arctic tidal pools provide environmental conditions suitable for calcifiers during summer, thereby potentially providing refugia for calcifiers in an acidifying Arctic Ocean, was tested on the basis of measurements conducted during two midsummers (2014 and 2016) in tidal pools co...
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2018
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ftuniaarhuspubl:oai:pure.atira.dk:publications/3d87e74c-ced4-4803-b637-6559789debbc 2023-05-15T14:48:42+02:00 Greenland Tidal Pools as Hot Spots for Ecosystem Metabolism and Calcification Duarte, Carlos M. Krause-Jensen, Dorte 2018-07 https://pure.au.dk/portal/da/publications/greenland-tidal-pools-as-hot-spots-for-ecosystem-metabolism-and-calcification(3d87e74c-ced4-4803-b637-6559789debbc).html https://doi.org/10.1007/s12237-018-0368-9 eng eng info:eu-repo/semantics/closedAccess Duarte , C M & Krause-Jensen , D 2018 , ' Greenland Tidal Pools as Hot Spots for Ecosystem Metabolism and Calcification ' , Estuaries and Coasts , vol. 41 , no. 5 , pp. 1314-1321 . https://doi.org/10.1007/s12237-018-0368-9 Arctic Seaweed Today pools pH Oxygen Calcification Acidification SUB-ARCTIC FJORD OCEAN ACIDIFICATION CARBONIC-ACID IMPACTS SEAWATER DISSOCIATION CALCIFIERS CONSTANTS COMMUNITY article 2018 ftuniaarhuspubl https://doi.org/10.1007/s12237-018-0368-9 2023-01-18T23:55:35Z The hypothesis that Arctic tidal pools provide environmental conditions suitable for calcifiers during summer, thereby potentially providing refugia for calcifiers in an acidifying Arctic Ocean, was tested on the basis of measurements conducted during two midsummers (2014 and 2016) in tidal pools colonised by a community composed of macroalgae and calcifiers in Disko Bay, Greenland (69A degrees N). The tidal pools exhibited steep diurnal variations in temperature from a minimum of about 6 A degrees C during the night to a maximum of almost 18 A degrees C in the afternoon, while the temperature of the surrounding shore water was much lower, typically in the range 3 to 8 A degrees C. O-2 concentrations in the tidal pools were elevated relative to those in the adjacent open waters, by up to 11 mg O-2 L-1, and exhibited heavy super-saturation (up to > 240%) during daytime emersion, reflecting intense and sustained photosynthetic rates of the tidal macroalgae. The intense photosynthetic activity of the seaweeds resulted in the drawdown of pCO(2) concentrations in the pools during the day to levels down to average (+/- SE) values of 66 +/- 18 ppm, and a minimum recorded value of 14.7 ppm, corresponding to pH levels as high as 8.69 +/- 0.08, as compared to CO2 levels of 256 +/- 4 and pH levels of 8.14 +/- 0.01 in the water flooding the pools during high tide. The corresponding Omega(arag) reached 5.04 +/- 0.49 in the pools as compared to 1.55 +/- 0.02 in the coastal waters flooding the pools. Net calcification averaged 9.6 +/- 5.6 mu mol C kg(-1) h(-1) and was strongly and positively correlated with calculated net ecosystem production rates, which averaged 27.5 +/- 8.6 mu mol C kg(-1) h(-1). Arctic tidal pools promote intense metabolism, creating conditions suitable for calcification during the Arctic summer, and can, therefore, provide refugia from ocean acidification to vulnerable calcifiers as extended periods of continuous light during summer are conducive to suitable conditions twice a day. Meroplankton larvae ... Article in Journal/Newspaper Arctic Arctic Ocean Carbonic acid Disko Bay Greenland Ocean acidification Aarhus University: Research Arctic Arctic Ocean Greenland Estuaries and Coasts 41 5 1314 1321 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Arctic Seaweed Today pools pH Oxygen Calcification Acidification SUB-ARCTIC FJORD OCEAN ACIDIFICATION CARBONIC-ACID IMPACTS SEAWATER DISSOCIATION CALCIFIERS CONSTANTS COMMUNITY |
spellingShingle |
Arctic Seaweed Today pools pH Oxygen Calcification Acidification SUB-ARCTIC FJORD OCEAN ACIDIFICATION CARBONIC-ACID IMPACTS SEAWATER DISSOCIATION CALCIFIERS CONSTANTS COMMUNITY Duarte, Carlos M. Krause-Jensen, Dorte Greenland Tidal Pools as Hot Spots for Ecosystem Metabolism and Calcification |
topic_facet |
Arctic Seaweed Today pools pH Oxygen Calcification Acidification SUB-ARCTIC FJORD OCEAN ACIDIFICATION CARBONIC-ACID IMPACTS SEAWATER DISSOCIATION CALCIFIERS CONSTANTS COMMUNITY |
description |
The hypothesis that Arctic tidal pools provide environmental conditions suitable for calcifiers during summer, thereby potentially providing refugia for calcifiers in an acidifying Arctic Ocean, was tested on the basis of measurements conducted during two midsummers (2014 and 2016) in tidal pools colonised by a community composed of macroalgae and calcifiers in Disko Bay, Greenland (69A degrees N). The tidal pools exhibited steep diurnal variations in temperature from a minimum of about 6 A degrees C during the night to a maximum of almost 18 A degrees C in the afternoon, while the temperature of the surrounding shore water was much lower, typically in the range 3 to 8 A degrees C. O-2 concentrations in the tidal pools were elevated relative to those in the adjacent open waters, by up to 11 mg O-2 L-1, and exhibited heavy super-saturation (up to > 240%) during daytime emersion, reflecting intense and sustained photosynthetic rates of the tidal macroalgae. The intense photosynthetic activity of the seaweeds resulted in the drawdown of pCO(2) concentrations in the pools during the day to levels down to average (+/- SE) values of 66 +/- 18 ppm, and a minimum recorded value of 14.7 ppm, corresponding to pH levels as high as 8.69 +/- 0.08, as compared to CO2 levels of 256 +/- 4 and pH levels of 8.14 +/- 0.01 in the water flooding the pools during high tide. The corresponding Omega(arag) reached 5.04 +/- 0.49 in the pools as compared to 1.55 +/- 0.02 in the coastal waters flooding the pools. Net calcification averaged 9.6 +/- 5.6 mu mol C kg(-1) h(-1) and was strongly and positively correlated with calculated net ecosystem production rates, which averaged 27.5 +/- 8.6 mu mol C kg(-1) h(-1). Arctic tidal pools promote intense metabolism, creating conditions suitable for calcification during the Arctic summer, and can, therefore, provide refugia from ocean acidification to vulnerable calcifiers as extended periods of continuous light during summer are conducive to suitable conditions twice a day. Meroplankton larvae ... |
format |
Article in Journal/Newspaper |
author |
Duarte, Carlos M. Krause-Jensen, Dorte |
author_facet |
Duarte, Carlos M. Krause-Jensen, Dorte |
author_sort |
Duarte, Carlos M. |
title |
Greenland Tidal Pools as Hot Spots for Ecosystem Metabolism and Calcification |
title_short |
Greenland Tidal Pools as Hot Spots for Ecosystem Metabolism and Calcification |
title_full |
Greenland Tidal Pools as Hot Spots for Ecosystem Metabolism and Calcification |
title_fullStr |
Greenland Tidal Pools as Hot Spots for Ecosystem Metabolism and Calcification |
title_full_unstemmed |
Greenland Tidal Pools as Hot Spots for Ecosystem Metabolism and Calcification |
title_sort |
greenland tidal pools as hot spots for ecosystem metabolism and calcification |
publishDate |
2018 |
url |
https://pure.au.dk/portal/da/publications/greenland-tidal-pools-as-hot-spots-for-ecosystem-metabolism-and-calcification(3d87e74c-ced4-4803-b637-6559789debbc).html https://doi.org/10.1007/s12237-018-0368-9 |
geographic |
Arctic Arctic Ocean Greenland |
geographic_facet |
Arctic Arctic Ocean Greenland |
genre |
Arctic Arctic Ocean Carbonic acid Disko Bay Greenland Ocean acidification |
genre_facet |
Arctic Arctic Ocean Carbonic acid Disko Bay Greenland Ocean acidification |
op_source |
Duarte , C M & Krause-Jensen , D 2018 , ' Greenland Tidal Pools as Hot Spots for Ecosystem Metabolism and Calcification ' , Estuaries and Coasts , vol. 41 , no. 5 , pp. 1314-1321 . https://doi.org/10.1007/s12237-018-0368-9 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1007/s12237-018-0368-9 |
container_title |
Estuaries and Coasts |
container_volume |
41 |
container_issue |
5 |
container_start_page |
1314 |
op_container_end_page |
1321 |
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1766319795884523520 |