Seasonal metabolism and carbon export potential of a key coastal habitat: The perennial canopy‐forming macroalga Fucus vesiculosus
Abstract The important role of macroalgal canopies in the oceanic carbon (C) cycle is increasingly being recognized, but direct assessments of community productivity remain scarce. We conducted a seasonal study on a sublittoral Baltic Sea canopy of the brown alga Fucus vesiculosus , a prominent spec...
Published in: | Limnology and Oceanography |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | http://dx.doi.org/10.1002/lno.11026 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flno.11026 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11026 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.11026 https://onlinelibrary.wiley.com/doi/am-pdf/10.1002%2Flno.11026 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11026 |
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crwiley:10.1002/lno.11026 2024-06-02T08:02:39+00:00 Seasonal metabolism and carbon export potential of a key coastal habitat: The perennial canopy‐forming macroalga Fucus vesiculosus Attard, K. M. Rodil, I. F. Berg, P. Norkko, J. Norkko, A. Glud, R. N. National Science Foundation 2018 http://dx.doi.org/10.1002/lno.11026 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flno.11026 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11026 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.11026 https://onlinelibrary.wiley.com/doi/am-pdf/10.1002%2Flno.11026 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11026 en eng Wiley http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/ Limnology and Oceanography volume 64, issue 1, page 149-164 ISSN 0024-3590 1939-5590 journal-article 2018 crwiley https://doi.org/10.1002/lno.11026 2024-05-03T11:03:28Z Abstract The important role of macroalgal canopies in the oceanic carbon (C) cycle is increasingly being recognized, but direct assessments of community productivity remain scarce. We conducted a seasonal study on a sublittoral Baltic Sea canopy of the brown alga Fucus vesiculosus , a prominent species in temperate and Arctic waters. We investigated community production on hourly, daily, and seasonal timescales. Aquatic eddy covariance (AEC) oxygen flux measurements integrated ~ 40 m 2 of the seabed surface area and documented considerable oxygen production by the canopy year‐round. High net oxygen production rates of up to 35 ± 9 mmol m −2 h −1 were measured under peak irradiance of ~ 1200 μ mol photosynthetically active radiation (PAR) m −2 s −1 in summer. However, high rates > 15 mmol m −2 h −1 were also measured in late winter (March) under low light intensities < 250 μ mol PAR m −2 s −1 and water temperatures of ~ 1°C. In some cases, hourly AEC fluxes documented an apparent release of oxygen by the canopy under dark conditions, which may be due to gas storage dynamics within internal air spaces of F. vesiculosus. Daily net ecosystem metabolism ( NEM ) was positive (net autotrophic) in all but one of the five measurement campaigns (December). A simple regression model predicted a net autotrophic canopy for two‐thirds of the year, and annual canopy NEM amounted to 25 mol O 2 m −2 yr −1 , approximately six‐fold higher than net phytoplankton production. Canopy C export was ~ 0.3 kg C m −2 yr −1 , comparable to canopy standing biomass in summer. Macroalgal canopies thus represent regions of intensified C assimilation and export in coastal waters. Article in Journal/Newspaper Arctic Phytoplankton Wiley Online Library Arctic Limnology and Oceanography 64 1 149 164 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The important role of macroalgal canopies in the oceanic carbon (C) cycle is increasingly being recognized, but direct assessments of community productivity remain scarce. We conducted a seasonal study on a sublittoral Baltic Sea canopy of the brown alga Fucus vesiculosus , a prominent species in temperate and Arctic waters. We investigated community production on hourly, daily, and seasonal timescales. Aquatic eddy covariance (AEC) oxygen flux measurements integrated ~ 40 m 2 of the seabed surface area and documented considerable oxygen production by the canopy year‐round. High net oxygen production rates of up to 35 ± 9 mmol m −2 h −1 were measured under peak irradiance of ~ 1200 μ mol photosynthetically active radiation (PAR) m −2 s −1 in summer. However, high rates > 15 mmol m −2 h −1 were also measured in late winter (March) under low light intensities < 250 μ mol PAR m −2 s −1 and water temperatures of ~ 1°C. In some cases, hourly AEC fluxes documented an apparent release of oxygen by the canopy under dark conditions, which may be due to gas storage dynamics within internal air spaces of F. vesiculosus. Daily net ecosystem metabolism ( NEM ) was positive (net autotrophic) in all but one of the five measurement campaigns (December). A simple regression model predicted a net autotrophic canopy for two‐thirds of the year, and annual canopy NEM amounted to 25 mol O 2 m −2 yr −1 , approximately six‐fold higher than net phytoplankton production. Canopy C export was ~ 0.3 kg C m −2 yr −1 , comparable to canopy standing biomass in summer. Macroalgal canopies thus represent regions of intensified C assimilation and export in coastal waters. |
author2 |
National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Attard, K. M. Rodil, I. F. Berg, P. Norkko, J. Norkko, A. Glud, R. N. |
spellingShingle |
Attard, K. M. Rodil, I. F. Berg, P. Norkko, J. Norkko, A. Glud, R. N. Seasonal metabolism and carbon export potential of a key coastal habitat: The perennial canopy‐forming macroalga Fucus vesiculosus |
author_facet |
Attard, K. M. Rodil, I. F. Berg, P. Norkko, J. Norkko, A. Glud, R. N. |
author_sort |
Attard, K. M. |
title |
Seasonal metabolism and carbon export potential of a key coastal habitat: The perennial canopy‐forming macroalga Fucus vesiculosus |
title_short |
Seasonal metabolism and carbon export potential of a key coastal habitat: The perennial canopy‐forming macroalga Fucus vesiculosus |
title_full |
Seasonal metabolism and carbon export potential of a key coastal habitat: The perennial canopy‐forming macroalga Fucus vesiculosus |
title_fullStr |
Seasonal metabolism and carbon export potential of a key coastal habitat: The perennial canopy‐forming macroalga Fucus vesiculosus |
title_full_unstemmed |
Seasonal metabolism and carbon export potential of a key coastal habitat: The perennial canopy‐forming macroalga Fucus vesiculosus |
title_sort |
seasonal metabolism and carbon export potential of a key coastal habitat: the perennial canopy‐forming macroalga fucus vesiculosus |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1002/lno.11026 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flno.11026 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11026 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.11026 https://onlinelibrary.wiley.com/doi/am-pdf/10.1002%2Flno.11026 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11026 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Phytoplankton |
genre_facet |
Arctic Phytoplankton |
op_source |
Limnology and Oceanography volume 64, issue 1, page 149-164 ISSN 0024-3590 1939-5590 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/lno.11026 |
container_title |
Limnology and Oceanography |
container_volume |
64 |
container_issue |
1 |
container_start_page |
149 |
op_container_end_page |
164 |
_version_ |
1800747127630987264 |