Nitrogen removal through oyster cultivation: Integration with artificial fertilization makes it more efficient
The use of bivalve aquaculture to mitigate eutrophication in coastal waters has been proposed for years. As nitrogen overenrichment is usually accompanied by comparative shortages in silicate and phosphate, bivalve cultivation integrated with artificial fertilization may exhibit better nitrogen remo...
Published in: | Science of The Total Environment |
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Online Access: | http://ir.qdio.ac.cn/handle/337002/176230 http://ir.qdio.ac.cn/handle/337002/176231 https://doi.org/10.1016/j.scitotenv.2021.148057 |
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ftchinacasciocas:oai:ir.qdio.ac.cn:337002/176231 2023-05-15T15:58:53+02:00 Nitrogen removal through oyster cultivation: Integration with artificial fertilization makes it more efficient Liu, Mengtan Wang, Zhaohui Zhang, Guangtao 2021-10-20 http://ir.qdio.ac.cn/handle/337002/176230 http://ir.qdio.ac.cn/handle/337002/176231 https://doi.org/10.1016/j.scitotenv.2021.148057 英语 eng ELSEVIER SCIENCE OF THE TOTAL ENVIRONMENT http://ir.qdio.ac.cn/handle/337002/176230 http://ir.qdio.ac.cn/handle/337002/176231 doi:10.1016/j.scitotenv.2021.148057 Nutrient limitation Nitrogen reduction Crassostrea gigas Eutrophication Fertilization Environmental Sciences & Ecology Environmental Sciences 期刊论文 2021 ftchinacasciocas https://doi.org/10.1016/j.scitotenv.2021.148057 2022-06-27T05:46:12Z The use of bivalve aquaculture to mitigate eutrophication in coastal waters has been proposed for years. As nitrogen overenrichment is usually accompanied by comparative shortages in silicate and phosphate, bivalve cultivation integrated with artificial fertilization may exhibit better nitrogen removal performance than bivalve cultivation alone. During a 15-day mesocosm experiment in a nitrogen-eutrophicated, phosphate-limited coastal pond, the nitrogen fixation in oyster tissue under rice husk ash (RHA) 1 fertilized conditions was 10 times higher than that in the oyster-only treatments with the same density. Meanwhile, the concentrations of dissolved inorganic nitrogen (DIN) and particulate nitrogen (PN) in the combined oyster-fertilization treatments decreased by 87.0% and 57.2%, respectively. Compared with the RHA fertilization treatments, the net DIN consumption was significantly lower and decreased with the oyster density in the oyster-only treatments. The dissolved N/Si ratio decreased from 1.44 to 1.01 and 0.93 in the control and fertilization treatments, respectively, whereas in the oyster-only treatments, it increased to 3.74 at low density and 29.15 at high density. Our results indicate that oyster cultivation can stimulate the regeneration of nitrogen in dissolved forms and intensify relative silicate shortages. The integration of RHA fertilization mediated silicate shortage and helped maintain a balanced dissolved N/Si ratio. Moreover, the combined oyster-RHA fertilization enhanced nitrogen removal efficiency and biomass accumulation and increased the feasibility of oyster cultivation as a cost-effective nitrogen reduction measure. (C) 2021 Elsevier B.V. All rights reserved. Report Crassostrea gigas Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Science of The Total Environment 792 148057 |
institution |
Open Polar |
collection |
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
op_collection_id |
ftchinacasciocas |
language |
English |
topic |
Nutrient limitation Nitrogen reduction Crassostrea gigas Eutrophication Fertilization Environmental Sciences & Ecology Environmental Sciences |
spellingShingle |
Nutrient limitation Nitrogen reduction Crassostrea gigas Eutrophication Fertilization Environmental Sciences & Ecology Environmental Sciences Liu, Mengtan Wang, Zhaohui Zhang, Guangtao Nitrogen removal through oyster cultivation: Integration with artificial fertilization makes it more efficient |
topic_facet |
Nutrient limitation Nitrogen reduction Crassostrea gigas Eutrophication Fertilization Environmental Sciences & Ecology Environmental Sciences |
description |
The use of bivalve aquaculture to mitigate eutrophication in coastal waters has been proposed for years. As nitrogen overenrichment is usually accompanied by comparative shortages in silicate and phosphate, bivalve cultivation integrated with artificial fertilization may exhibit better nitrogen removal performance than bivalve cultivation alone. During a 15-day mesocosm experiment in a nitrogen-eutrophicated, phosphate-limited coastal pond, the nitrogen fixation in oyster tissue under rice husk ash (RHA) 1 fertilized conditions was 10 times higher than that in the oyster-only treatments with the same density. Meanwhile, the concentrations of dissolved inorganic nitrogen (DIN) and particulate nitrogen (PN) in the combined oyster-fertilization treatments decreased by 87.0% and 57.2%, respectively. Compared with the RHA fertilization treatments, the net DIN consumption was significantly lower and decreased with the oyster density in the oyster-only treatments. The dissolved N/Si ratio decreased from 1.44 to 1.01 and 0.93 in the control and fertilization treatments, respectively, whereas in the oyster-only treatments, it increased to 3.74 at low density and 29.15 at high density. Our results indicate that oyster cultivation can stimulate the regeneration of nitrogen in dissolved forms and intensify relative silicate shortages. The integration of RHA fertilization mediated silicate shortage and helped maintain a balanced dissolved N/Si ratio. Moreover, the combined oyster-RHA fertilization enhanced nitrogen removal efficiency and biomass accumulation and increased the feasibility of oyster cultivation as a cost-effective nitrogen reduction measure. (C) 2021 Elsevier B.V. All rights reserved. |
format |
Report |
author |
Liu, Mengtan Wang, Zhaohui Zhang, Guangtao |
author_facet |
Liu, Mengtan Wang, Zhaohui Zhang, Guangtao |
author_sort |
Liu, Mengtan |
title |
Nitrogen removal through oyster cultivation: Integration with artificial fertilization makes it more efficient |
title_short |
Nitrogen removal through oyster cultivation: Integration with artificial fertilization makes it more efficient |
title_full |
Nitrogen removal through oyster cultivation: Integration with artificial fertilization makes it more efficient |
title_fullStr |
Nitrogen removal through oyster cultivation: Integration with artificial fertilization makes it more efficient |
title_full_unstemmed |
Nitrogen removal through oyster cultivation: Integration with artificial fertilization makes it more efficient |
title_sort |
nitrogen removal through oyster cultivation: integration with artificial fertilization makes it more efficient |
publisher |
ELSEVIER |
publishDate |
2021 |
url |
http://ir.qdio.ac.cn/handle/337002/176230 http://ir.qdio.ac.cn/handle/337002/176231 https://doi.org/10.1016/j.scitotenv.2021.148057 |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_relation |
SCIENCE OF THE TOTAL ENVIRONMENT http://ir.qdio.ac.cn/handle/337002/176230 http://ir.qdio.ac.cn/handle/337002/176231 doi:10.1016/j.scitotenv.2021.148057 |
op_doi |
https://doi.org/10.1016/j.scitotenv.2021.148057 |
container_title |
Science of The Total Environment |
container_volume |
792 |
container_start_page |
148057 |
_version_ |
1766394660080582656 |