Exogenous nutrient inputs restructure phytoplankton community and ecological stoichiometry of Eastern Indian Ocean
Exogenous nutrient inputs increasingly impact the structure and function of marine food weds through abiotic and biotic ways. The influence of nutrient inputs from atmospheric depositions and intermediate seawater supply on the phytoplankton growth and stoichiometry was studied in the Eastern Indian...
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2021
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oai:doaj.org-article:bdfbb3e0602441aa91df74fa9e9063f12021-12-01T04:53:47ZExogenous nutrient inputs restructure phytoplankton community and ecological stoichiometry of Eastern Indian Ocean1470-160X10.1016/j.ecolind.2021.107801https://doaj.org/article/bdfbb3e0602441aa91df74fa9e9063f12021-08-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21004660https://doaj.org/toc/1470-160XExogenous nutrient inputs increasingly impact the structure and function of marine food weds through abiotic and biotic ways. The influence of nutrient inputs from atmospheric depositions and intermediate seawater supply on the phytoplankton growth and stoichiometry was studied in the Eastern Indian Ocean through multifactorial mesocosm experiments. Our results indicate that nitrogen inputs from atmospheric deposition and hydrodynamic processes did not only promote chlorophyll a biomass (5.3–58.52 μg·L-1) to increase the photosynthetically fixed carbon content but also generate a regime shift from picophytoplankton cyanobacteria to microphytoplankton diatom indicated by high relative abundance of microphytoplankton (>50%). These alternations of nutrient status and phytoplankton community structure reduced biodiversity of marine ecosystems (N-cultures, 0.18 to 0.56; control, 0.63) and generated the attendant C/N ratio of 5.6 ± 0.2 in cultures with nitrogen addition that was significantly lower than cultures with only phosphorus or iron addition. These results provide a thorough insight about the influence of nutrient inputs on marine biogeochemical cycle. Considering the universality of phytoplankton community alteration induced by exogenous nutrient inputs, integrating community compositions with phytoplankton stoichiometry may be helpful for clarify mechanisms of environment events impacting marine food weds.Yuping ZhouXue YangYing WangFangfang LiJiangtao WangLiju TanElsevierarticlePhytoplankton communityStoichiometryNitrogen inputBiodiversityC/N ratioEastern Indian OceanEcologyQH540-549.5ENEcological Indicators, Vol 127, Iss , Pp 107801- (2021) |
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Phytoplankton community Stoichiometry Nitrogen input Biodiversity C/N ratio Eastern Indian Ocean Ecology QH540-549.5 |
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Phytoplankton community Stoichiometry Nitrogen input Biodiversity C/N ratio Eastern Indian Ocean Ecology QH540-549.5 Yuping Zhou Xue Yang Ying Wang Fangfang Li Jiangtao Wang Liju Tan Exogenous nutrient inputs restructure phytoplankton community and ecological stoichiometry of Eastern Indian Ocean |
description |
Exogenous nutrient inputs increasingly impact the structure and function of marine food weds through abiotic and biotic ways. The influence of nutrient inputs from atmospheric depositions and intermediate seawater supply on the phytoplankton growth and stoichiometry was studied in the Eastern Indian Ocean through multifactorial mesocosm experiments. Our results indicate that nitrogen inputs from atmospheric deposition and hydrodynamic processes did not only promote chlorophyll a biomass (5.3–58.52 μg·L-1) to increase the photosynthetically fixed carbon content but also generate a regime shift from picophytoplankton cyanobacteria to microphytoplankton diatom indicated by high relative abundance of microphytoplankton (>50%). These alternations of nutrient status and phytoplankton community structure reduced biodiversity of marine ecosystems (N-cultures, 0.18 to 0.56; control, 0.63) and generated the attendant C/N ratio of 5.6 ± 0.2 in cultures with nitrogen addition that was significantly lower than cultures with only phosphorus or iron addition. These results provide a thorough insight about the influence of nutrient inputs on marine biogeochemical cycle. Considering the universality of phytoplankton community alteration induced by exogenous nutrient inputs, integrating community compositions with phytoplankton stoichiometry may be helpful for clarify mechanisms of environment events impacting marine food weds. |
format |
article |
author |
Yuping Zhou Xue Yang Ying Wang Fangfang Li Jiangtao Wang Liju Tan |
author_facet |
Yuping Zhou Xue Yang Ying Wang Fangfang Li Jiangtao Wang Liju Tan |
author_sort |
Yuping Zhou |
title |
Exogenous nutrient inputs restructure phytoplankton community and ecological stoichiometry of Eastern Indian Ocean |
title_short |
Exogenous nutrient inputs restructure phytoplankton community and ecological stoichiometry of Eastern Indian Ocean |
title_full |
Exogenous nutrient inputs restructure phytoplankton community and ecological stoichiometry of Eastern Indian Ocean |
title_fullStr |
Exogenous nutrient inputs restructure phytoplankton community and ecological stoichiometry of Eastern Indian Ocean |
title_full_unstemmed |
Exogenous nutrient inputs restructure phytoplankton community and ecological stoichiometry of Eastern Indian Ocean |
title_sort |
exogenous nutrient inputs restructure phytoplankton community and ecological stoichiometry of eastern indian ocean |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://doaj.org/article/bdfbb3e0602441aa91df74fa9e9063f1 |
work_keys_str_mv |
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_version_ |
1718405686830825472 |