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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ftieo:oai:repositorio.ieo.es:10508/9725 2023-05-15T17:33:22+02:00 Microbial plankton community responses to nutrient additions and B12-vitamin additions Hernández-Ruiz, M.(Marta) Barber-Lluch, E. Prieto, A. Varela-Rozados, M. (Marta) Fernández, E. Teira, E. (Eva) 2014 Atlantic Ocean North Atlantic 2015-02 http://hdl.handle.net/10508/9725 eng eng Centro Oceanográfico de A Coruña Moduplan http://hdl.handle.net/10508/9725 2015 Aquatic Science Meeting: Global and regional perspectives-North meets South. (22/02/2015 - 27/02/2015. Granada(España)). 2015. ID:26971. En: , . Attribution-NonCommercial-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nc-nd/3.0/es/ openAccess CC-BY-NC-ND microbial plankton community nutrient additions B12-vitamin additions responses conferenceObject 2015 ftieo 2022-07-26T23:48:48Z 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 Instituto Español de Oceanografía: e-IEO |
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Instituto Español de Oceanografía: e-IEO |
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language |
English |
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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. Prieto, A. Varela-Rozados, M. (Marta) 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. Prieto, A. Varela-Rozados, M. (Marta) Fernández, E. Teira, E. (Eva) |
author_facet |
Hernández-Ruiz, M.(Marta) Barber-Lluch, E. Prieto, A. Varela-Rozados, M. (Marta) 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 |
op_coverage |
2014 Atlantic Ocean North Atlantic |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Moduplan http://hdl.handle.net/10508/9725 2015 Aquatic Science Meeting: Global and regional perspectives-North meets South. (22/02/2015 - 27/02/2015. Granada(España)). 2015. ID:26971. En: , . |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nc-nd/3.0/es/ openAccess |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766131857068392448 |