Inorganic carbon availability in benthic diatom communities: photosynthesis and migration
Diatom-dominated microphytobenthos (MPB) is the main primary producer of many intertidal and shallow subtidal environments, being therefore of critical importance to estuarine and coastal food webs. Owing to tidal cycles, intertidal MPB diatoms are subjected to environmental conditions far more vari...
Published in: | Philosophical Transactions of the Royal Society B: Biological Sciences |
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crroyalsociety:10.1098/rstb.2016.0398 2024-06-02T08:12:36+00:00 Inorganic carbon availability in benthic diatom communities: photosynthesis and migration Marques da Silva, Jorge Cruz, Sónia Cartaxana, Paulo Fundação para a Ciência e a Tecnologia 2017 http://dx.doi.org/10.1098/rstb.2016.0398 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.2016.0398 https://royalsocietypublishing.org/doi/full-xml/10.1098/rstb.2016.0398 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society B: Biological Sciences volume 372, issue 1728, page 20160398 ISSN 0962-8436 1471-2970 journal-article 2017 crroyalsociety https://doi.org/10.1098/rstb.2016.0398 2024-05-07T14:16:41Z Diatom-dominated microphytobenthos (MPB) is the main primary producer of many intertidal and shallow subtidal environments, being therefore of critical importance to estuarine and coastal food webs. Owing to tidal cycles, intertidal MPB diatoms are subjected to environmental conditions far more variable than the ones experienced by pelagic diatoms (e.g. light, temperature, salinity, desiccation and nutrient availability). Nevertheless, benthic diatoms evolved adaptation mechanisms to these harsh conditions, including the capacity to move within steep physical and chemical gradients, allowing them to perform photosynthesis efficiently. In this contribution, we will review present knowledge on the effects of dissolved inorganic carbon (DIC) availability on photosynthesis and productivity of diatom-dominated MPB. We present evidence of carbon limitation of photosynthesis in benthic diatom mats and highly productive MPB natural communities. Furthermore, we hypothesize that active vertical migration of epipelic motile diatoms could overcome local depletion of DIC in the photic layer, providing the cells alternately with light and inorganic carbon supply. The few available longer-term experiments on the effects of inorganic carbon enrichment on the productivity of diatom-dominated MPB have yielded inconsistent results. Therefore, further studies are needed to properly assess the response of MPB communities to increased CO 2 and ocean acidification related to climate change. This article is part of the themed issue ‘The peculiar carbon metabolism in diatoms’. Article in Journal/Newspaper Ocean acidification The Royal Society Philosophical Transactions of the Royal Society B: Biological Sciences 372 1728 20160398 |
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English |
description |
Diatom-dominated microphytobenthos (MPB) is the main primary producer of many intertidal and shallow subtidal environments, being therefore of critical importance to estuarine and coastal food webs. Owing to tidal cycles, intertidal MPB diatoms are subjected to environmental conditions far more variable than the ones experienced by pelagic diatoms (e.g. light, temperature, salinity, desiccation and nutrient availability). Nevertheless, benthic diatoms evolved adaptation mechanisms to these harsh conditions, including the capacity to move within steep physical and chemical gradients, allowing them to perform photosynthesis efficiently. In this contribution, we will review present knowledge on the effects of dissolved inorganic carbon (DIC) availability on photosynthesis and productivity of diatom-dominated MPB. We present evidence of carbon limitation of photosynthesis in benthic diatom mats and highly productive MPB natural communities. Furthermore, we hypothesize that active vertical migration of epipelic motile diatoms could overcome local depletion of DIC in the photic layer, providing the cells alternately with light and inorganic carbon supply. The few available longer-term experiments on the effects of inorganic carbon enrichment on the productivity of diatom-dominated MPB have yielded inconsistent results. Therefore, further studies are needed to properly assess the response of MPB communities to increased CO 2 and ocean acidification related to climate change. This article is part of the themed issue ‘The peculiar carbon metabolism in diatoms’. |
author2 |
Fundação para a Ciência e a Tecnologia |
format |
Article in Journal/Newspaper |
author |
Marques da Silva, Jorge Cruz, Sónia Cartaxana, Paulo |
spellingShingle |
Marques da Silva, Jorge Cruz, Sónia Cartaxana, Paulo Inorganic carbon availability in benthic diatom communities: photosynthesis and migration |
author_facet |
Marques da Silva, Jorge Cruz, Sónia Cartaxana, Paulo |
author_sort |
Marques da Silva, Jorge |
title |
Inorganic carbon availability in benthic diatom communities: photosynthesis and migration |
title_short |
Inorganic carbon availability in benthic diatom communities: photosynthesis and migration |
title_full |
Inorganic carbon availability in benthic diatom communities: photosynthesis and migration |
title_fullStr |
Inorganic carbon availability in benthic diatom communities: photosynthesis and migration |
title_full_unstemmed |
Inorganic carbon availability in benthic diatom communities: photosynthesis and migration |
title_sort |
inorganic carbon availability in benthic diatom communities: photosynthesis and migration |
publisher |
The Royal Society |
publishDate |
2017 |
url |
http://dx.doi.org/10.1098/rstb.2016.0398 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.2016.0398 https://royalsocietypublishing.org/doi/full-xml/10.1098/rstb.2016.0398 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Philosophical Transactions of the Royal Society B: Biological Sciences volume 372, issue 1728, page 20160398 ISSN 0962-8436 1471-2970 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rstb.2016.0398 |
container_title |
Philosophical Transactions of the Royal Society B: Biological Sciences |
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372 |
container_issue |
1728 |
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20160398 |
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1800759072466665472 |