Microbial plankton community responses to nutrient additions and B12-vitamin additions
Comunicación oral Recent studies in coastal waters suggest that phytoplankton is eventually limited or colimited by some metabolites derived from bacterial activity. The majority of phytoplankton species require an exogenous source of B12 vitamin for growth. As only selected prokaryotes are able to...
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ftcsic:oai:digital.csic.es:10261/316440 2024-02-11T10:06:28+01:00 Microbial plankton community responses to nutrient additions and B12-vitamin additions Hernández-Ruiz, M.(Marta) Barber-Lluch, E. (Esther) Prieto, A. Varela, M.M. (Marta María) Fernández, E. Teira, E. (Eva) Granada (España) 2014 Atlantic Ocean North Atlantic 2015-09-30T11:51:44Z http://hdl.handle.net/10508/9725 http://hdl.handle.net/10261/316440 en eng Centro Oceanográfico de A Coruña Moduplan http://hdl.handle.net/10508/9725 http://hdl.handle.net/10261/316440 ID:26971 2015 Aquatic Science Meeting: Global and regional perspectives-North meets South. (22/02/2015 - 27/02/2015. Granada(España)). 2015. ID:26971. En: , . 21371 open microbial plankton community nutrient additions B12-vitamin additions responses conference output 2015 ftcsic 2024-01-16T11:44:31Z Comunicación oral Recent studies in coastal waters suggest that phytoplankton is eventually limited or colimited by some metabolites derived from bacterial activity. The majority of phytoplankton species require an exogenous source of B12 vitamin for growth. As only selected prokaryotes are able to synthesize B12, they must be the ultimate source of B12 for auxotrophic phytoplankton. We conducted 3 microcosm experiments to assess the response of microbial plankton to B12-vitamin amendment in the coastal-ocean transition zone off NW Spain. Surface seawater was mixed with inorganic nutrients, B12-vitamin or a combination of both and incubated during 72h, under in situ temperature and light conditions. Size-fractionated (20, 3 and 0.2 μm) chlorophyll-a concentration and picoplankton abundance were monitored every 24h and changes in the size-fractionated eukaryotic and prokaryotic community structure were assessed by ARISA (automatic rRNA intergenic spacer analysis) at the end of the experiments. We observed that phytoplankton responded to B12-vitamin (alone or in combination) in 2 experiments. Nanophytoplankton was the most responsive fraction in terms of biomass, whereas changes in community structure associated to B12-vitamin addition were mainly observed for large eukaryotes. Conference Object North Atlantic Digital.CSIC (Spanish National Research Council) |
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Open Polar |
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Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
microbial plankton community nutrient additions B12-vitamin additions responses |
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microbial plankton community nutrient additions B12-vitamin additions responses Hernández-Ruiz, M.(Marta) Barber-Lluch, E. (Esther) Prieto, A. Varela, M.M. (Marta María) Fernández, E. Teira, E. (Eva) Microbial plankton community responses to nutrient additions and B12-vitamin additions |
topic_facet |
microbial plankton community nutrient additions B12-vitamin additions responses |
description |
Comunicación oral Recent studies in coastal waters suggest that phytoplankton is eventually limited or colimited by some metabolites derived from bacterial activity. The majority of phytoplankton species require an exogenous source of B12 vitamin for growth. As only selected prokaryotes are able to synthesize B12, they must be the ultimate source of B12 for auxotrophic phytoplankton. We conducted 3 microcosm experiments to assess the response of microbial plankton to B12-vitamin amendment in the coastal-ocean transition zone off NW Spain. Surface seawater was mixed with inorganic nutrients, B12-vitamin or a combination of both and incubated during 72h, under in situ temperature and light conditions. Size-fractionated (20, 3 and 0.2 μm) chlorophyll-a concentration and picoplankton abundance were monitored every 24h and changes in the size-fractionated eukaryotic and prokaryotic community structure were assessed by ARISA (automatic rRNA intergenic spacer analysis) at the end of the experiments. We observed that phytoplankton responded to B12-vitamin (alone or in combination) in 2 experiments. Nanophytoplankton was the most responsive fraction in terms of biomass, whereas changes in community structure associated to B12-vitamin addition were mainly observed for large eukaryotes. |
format |
Conference Object |
author |
Hernández-Ruiz, M.(Marta) Barber-Lluch, E. (Esther) Prieto, A. Varela, M.M. (Marta María) Fernández, E. Teira, E. (Eva) |
author_facet |
Hernández-Ruiz, M.(Marta) Barber-Lluch, E. (Esther) Prieto, A. Varela, M.M. (Marta María) Fernández, E. Teira, E. (Eva) |
author_sort |
Hernández-Ruiz, M.(Marta) |
title |
Microbial plankton community responses to nutrient additions and B12-vitamin additions |
title_short |
Microbial plankton community responses to nutrient additions and B12-vitamin additions |
title_full |
Microbial plankton community responses to nutrient additions and B12-vitamin additions |
title_fullStr |
Microbial plankton community responses to nutrient additions and B12-vitamin additions |
title_full_unstemmed |
Microbial plankton community responses to nutrient additions and B12-vitamin additions |
title_sort |
microbial plankton community responses to nutrient additions and b12-vitamin additions |
publisher |
Centro Oceanográfico de A Coruña |
publishDate |
2015 |
url |
http://hdl.handle.net/10508/9725 http://hdl.handle.net/10261/316440 |
op_coverage |
Granada (España) 2014 Atlantic Ocean North Atlantic |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Moduplan http://hdl.handle.net/10508/9725 http://hdl.handle.net/10261/316440 ID:26971 2015 Aquatic Science Meeting: Global and regional perspectives-North meets South. (22/02/2015 - 27/02/2015. Granada(España)). 2015. ID:26971. En: , . 21371 |
op_rights |
open |
_version_ |
1790604216259051520 |