Nutrient-specific responses of a phytoplankton community: a case study of the North Atlantic Gyre, Azores
Nutrient concentrations are unevenly distributed in the oceans, influencing the abundance and composition of phytoplankton communities. Even so, the dominant driving factors responsible for variability between phytoplankton communities are still unclear. In the North Atlantic Gyre, the Azores presen...
Published in: | Journal of Plankton Research |
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Online Access: | https://epubs.scu.edu.au/esm_pubs/3349 https://doi.org/10.1093/plankt/fbx025 |
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ftsoutherncu:oai:epubs.scu.edu.au:esm_pubs-4377 2023-05-15T17:28:42+02:00 Nutrient-specific responses of a phytoplankton community: a case study of the North Atlantic Gyre, Azores Ramos, J B Schulz, Kai G Voss, Maren Narciso, Áurea Müller, Marius N Reis, Francisco V Cachão, Mário Azevedo, Eduardo B 2017-01-01T08:00:00Z https://epubs.scu.edu.au/esm_pubs/3349 https://doi.org/10.1093/plankt/fbx025 unknown ePublications@SCU School of Environment, Science and Engineering Papers nutrients phytoplankton community composition oligotrophic North Atlantic Environmental Sciences article 2017 ftsoutherncu https://doi.org/10.1093/plankt/fbx025 2019-08-06T13:11:44Z Nutrient concentrations are unevenly distributed in the oceans, influencing the abundance and composition of phytoplankton communities. Even so, the dominant driving factors responsible for variability between phytoplankton communities are still unclear. In the North Atlantic Gyre, the Azores present a good opportunity to study phytoplankton communities of oligotrophic areas that experience nutrient pulses. We followed the development of an enclosed natural phytoplankton community occurring off the coast of Terceira (Azores) and tested the effects of single (nitrate, phosphate, silicate and a mix of the trace metals Fe, Co, Cu, Mo, Zn and Mn) and combined nutrient enrichments on phytoplankton abundance, particulate organic matter (POM) build-up, nutrient drawdown and community composition. Towards the end of the microcosm-based incubation, biomass developed dramatically (430-fold) when all the nutrients considered were added simultaneously. Importantly, the community composition at the end of the incubation was dependent on the combination of nutrients supplied, with diatoms dominating most of the treatments; coccolithophores under Phosphate + Trace Metals; and organisms with characteristics of a nitrogen fixer such as low δ15N under full nutrient enrichment. These results indicate group-specific nutrient requirements and limitations occurring near the Azores with a few taxa dominating the groups’ response to nutrient pulses. Article in Journal/Newspaper North Atlantic Southern Cross University: epublications@SCU Journal of Plankton Research 39 4 744 761 |
institution |
Open Polar |
collection |
Southern Cross University: epublications@SCU |
op_collection_id |
ftsoutherncu |
language |
unknown |
topic |
nutrients phytoplankton community composition oligotrophic North Atlantic Environmental Sciences |
spellingShingle |
nutrients phytoplankton community composition oligotrophic North Atlantic Environmental Sciences Ramos, J B Schulz, Kai G Voss, Maren Narciso, Áurea Müller, Marius N Reis, Francisco V Cachão, Mário Azevedo, Eduardo B Nutrient-specific responses of a phytoplankton community: a case study of the North Atlantic Gyre, Azores |
topic_facet |
nutrients phytoplankton community composition oligotrophic North Atlantic Environmental Sciences |
description |
Nutrient concentrations are unevenly distributed in the oceans, influencing the abundance and composition of phytoplankton communities. Even so, the dominant driving factors responsible for variability between phytoplankton communities are still unclear. In the North Atlantic Gyre, the Azores present a good opportunity to study phytoplankton communities of oligotrophic areas that experience nutrient pulses. We followed the development of an enclosed natural phytoplankton community occurring off the coast of Terceira (Azores) and tested the effects of single (nitrate, phosphate, silicate and a mix of the trace metals Fe, Co, Cu, Mo, Zn and Mn) and combined nutrient enrichments on phytoplankton abundance, particulate organic matter (POM) build-up, nutrient drawdown and community composition. Towards the end of the microcosm-based incubation, biomass developed dramatically (430-fold) when all the nutrients considered were added simultaneously. Importantly, the community composition at the end of the incubation was dependent on the combination of nutrients supplied, with diatoms dominating most of the treatments; coccolithophores under Phosphate + Trace Metals; and organisms with characteristics of a nitrogen fixer such as low δ15N under full nutrient enrichment. These results indicate group-specific nutrient requirements and limitations occurring near the Azores with a few taxa dominating the groups’ response to nutrient pulses. |
format |
Article in Journal/Newspaper |
author |
Ramos, J B Schulz, Kai G Voss, Maren Narciso, Áurea Müller, Marius N Reis, Francisco V Cachão, Mário Azevedo, Eduardo B |
author_facet |
Ramos, J B Schulz, Kai G Voss, Maren Narciso, Áurea Müller, Marius N Reis, Francisco V Cachão, Mário Azevedo, Eduardo B |
author_sort |
Ramos, J B |
title |
Nutrient-specific responses of a phytoplankton community: a case study of the North Atlantic Gyre, Azores |
title_short |
Nutrient-specific responses of a phytoplankton community: a case study of the North Atlantic Gyre, Azores |
title_full |
Nutrient-specific responses of a phytoplankton community: a case study of the North Atlantic Gyre, Azores |
title_fullStr |
Nutrient-specific responses of a phytoplankton community: a case study of the North Atlantic Gyre, Azores |
title_full_unstemmed |
Nutrient-specific responses of a phytoplankton community: a case study of the North Atlantic Gyre, Azores |
title_sort |
nutrient-specific responses of a phytoplankton community: a case study of the north atlantic gyre, azores |
publisher |
ePublications@SCU |
publishDate |
2017 |
url |
https://epubs.scu.edu.au/esm_pubs/3349 https://doi.org/10.1093/plankt/fbx025 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
School of Environment, Science and Engineering Papers |
op_doi |
https://doi.org/10.1093/plankt/fbx025 |
container_title |
Journal of Plankton Research |
container_volume |
39 |
container_issue |
4 |
container_start_page |
744 |
op_container_end_page |
761 |
_version_ |
1766121551766224896 |