Plankton community structure during KOSMOS 2011 mesocosm experiment in the Raunefjord
About 50 Gt of carbon is fixed photosynthetically by surface ocean phytoplankton communities every year. Part of this organic matter is reprocessed within the plankton community to form aggregates which eventually sink and export carbon into the deep ocean. The fraction of organic matter leaving the...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.873742 2024-09-15T18:28:19+00:00 Plankton community structure during KOSMOS 2011 mesocosm experiment in the Raunefjord Bach, Lennart Thomas Boxhammer, Tim Hildebrandt, Nicole Schulz, Kai Georg Riebesell, Ulf LATITUDE: 60.264500 * LONGITUDE: 5.205500 * DATE/TIME START: 2011-05-05T00:00:00 * DATE/TIME END: 2011-06-05T00:00:00 2017 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.873742 https://doi.org/10.1594/PANGAEA.873742 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.873742 https://doi.org/10.1594/PANGAEA.873742 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Bach, Lennart Thomas; Boxhammer, Tim; Larsen, Aud; Hildebrandt, Nicole; Schulz, Kai Georg; Riebesell, Ulf (2016): Influence of plankton community structure on the sinking velocity of marine aggregates. Global Biogeochemical Cycles, 30(8), 1145-1165, https://doi.org/10.1002/2016GB005372 BIOACID Biological Impacts of Ocean Acidification KOSMOS_2011_Bergen MESO Mesocosm experiment Raunefjord dataset publication series 2017 ftpangaea https://doi.org/10.1594/PANGAEA.87374210.1002/2016GB005372 2024-07-24T02:31:21Z About 50 Gt of carbon is fixed photosynthetically by surface ocean phytoplankton communities every year. Part of this organic matter is reprocessed within the plankton community to form aggregates which eventually sink and export carbon into the deep ocean. The fraction of organic matter leaving the surface ocean is partly dependent on aggregate sinking velocity which accelerates with increasing aggregate size and density, where the latter is controlled by ballast load and aggregate porosity. In May 2011, we moored nine 25 m deep mesocosms in a Norwegian fjord to assess on a daily basis how plankton community structure affects material properties and sinking velocities of aggregates (Ø 80–400 µm) collected in the mesocosms' sediment traps. We noted that sinking velocity was not necessarily accelerated by opal ballast during diatom blooms, which could be due to relatively high porosity of these rather fresh aggregates. Furthermore, estimated aggregate porosity (Pestimated) decreased as the picoautotroph (0.2–2 µm) fraction of the phytoplankton biomass increased. Thus, picoautotroph‐dominated communities may be indicative for food webs promoting a high degree of aggregate repackaging with potential for accelerated sinking. Blooms of the coccolithophore Emiliania huxleyi revealed that cell concentrations of ~1500 cells/mL accelerate sinking by about 35–40%, which we estimate (by one‐dimensional modeling) to elevate organic matter transfer efficiency through the mesopelagic from 14 to 24%. Our results indicate that sinking velocities are influenced by the complex interplay between the availability of ballast minerals and aggregate packaging; both of which are controlled by plankton community structure. Other/Unknown Material Ocean acidification PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(5.205500,5.205500,60.264500,60.264500) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
BIOACID Biological Impacts of Ocean Acidification KOSMOS_2011_Bergen MESO Mesocosm experiment Raunefjord |
spellingShingle |
BIOACID Biological Impacts of Ocean Acidification KOSMOS_2011_Bergen MESO Mesocosm experiment Raunefjord Bach, Lennart Thomas Boxhammer, Tim Hildebrandt, Nicole Schulz, Kai Georg Riebesell, Ulf Plankton community structure during KOSMOS 2011 mesocosm experiment in the Raunefjord |
topic_facet |
BIOACID Biological Impacts of Ocean Acidification KOSMOS_2011_Bergen MESO Mesocosm experiment Raunefjord |
description |
About 50 Gt of carbon is fixed photosynthetically by surface ocean phytoplankton communities every year. Part of this organic matter is reprocessed within the plankton community to form aggregates which eventually sink and export carbon into the deep ocean. The fraction of organic matter leaving the surface ocean is partly dependent on aggregate sinking velocity which accelerates with increasing aggregate size and density, where the latter is controlled by ballast load and aggregate porosity. In May 2011, we moored nine 25 m deep mesocosms in a Norwegian fjord to assess on a daily basis how plankton community structure affects material properties and sinking velocities of aggregates (Ø 80–400 µm) collected in the mesocosms' sediment traps. We noted that sinking velocity was not necessarily accelerated by opal ballast during diatom blooms, which could be due to relatively high porosity of these rather fresh aggregates. Furthermore, estimated aggregate porosity (Pestimated) decreased as the picoautotroph (0.2–2 µm) fraction of the phytoplankton biomass increased. Thus, picoautotroph‐dominated communities may be indicative for food webs promoting a high degree of aggregate repackaging with potential for accelerated sinking. Blooms of the coccolithophore Emiliania huxleyi revealed that cell concentrations of ~1500 cells/mL accelerate sinking by about 35–40%, which we estimate (by one‐dimensional modeling) to elevate organic matter transfer efficiency through the mesopelagic from 14 to 24%. Our results indicate that sinking velocities are influenced by the complex interplay between the availability of ballast minerals and aggregate packaging; both of which are controlled by plankton community structure. |
format |
Other/Unknown Material |
author |
Bach, Lennart Thomas Boxhammer, Tim Hildebrandt, Nicole Schulz, Kai Georg Riebesell, Ulf |
author_facet |
Bach, Lennart Thomas Boxhammer, Tim Hildebrandt, Nicole Schulz, Kai Georg Riebesell, Ulf |
author_sort |
Bach, Lennart Thomas |
title |
Plankton community structure during KOSMOS 2011 mesocosm experiment in the Raunefjord |
title_short |
Plankton community structure during KOSMOS 2011 mesocosm experiment in the Raunefjord |
title_full |
Plankton community structure during KOSMOS 2011 mesocosm experiment in the Raunefjord |
title_fullStr |
Plankton community structure during KOSMOS 2011 mesocosm experiment in the Raunefjord |
title_full_unstemmed |
Plankton community structure during KOSMOS 2011 mesocosm experiment in the Raunefjord |
title_sort |
plankton community structure during kosmos 2011 mesocosm experiment in the raunefjord |
publisher |
PANGAEA |
publishDate |
2017 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.873742 https://doi.org/10.1594/PANGAEA.873742 |
op_coverage |
LATITUDE: 60.264500 * LONGITUDE: 5.205500 * DATE/TIME START: 2011-05-05T00:00:00 * DATE/TIME END: 2011-06-05T00:00:00 |
long_lat |
ENVELOPE(5.205500,5.205500,60.264500,60.264500) |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Supplement to: Bach, Lennart Thomas; Boxhammer, Tim; Larsen, Aud; Hildebrandt, Nicole; Schulz, Kai Georg; Riebesell, Ulf (2016): Influence of plankton community structure on the sinking velocity of marine aggregates. Global Biogeochemical Cycles, 30(8), 1145-1165, https://doi.org/10.1002/2016GB005372 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.873742 https://doi.org/10.1594/PANGAEA.873742 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.87374210.1002/2016GB005372 |
_version_ |
1810469655725211648 |