Nutrient removal from Chinese coastal waters by large-scale seaweed aquaculture

Handle URI:
http://hdl.handle.net/10754/623275
Title:
Nutrient removal from Chinese coastal waters by large-scale seaweed aquaculture
Authors:
Xiao, Xi; Agusti, Susana ( 0000-0003-0536-7293 ) ; Lin, Fang; Li, Ke; Pan, Yaoru; Yu, Yan; Zheng, Yuhan; Wu, Jiaping; Duarte, Carlos M.
Abstract:
China is facing intense coastal eutrophication. Large-scale seaweed aquaculture in China is popular, now accounting for over 2/3's of global production. Here, we estimate the nutrient removal capability of large-scale Chinese seaweed farms to determine its significance in mitigating eutrophication. We combined estimates of yield and nutrient concentration of Chinese seaweed aquaculture to quantify that one hectare of seaweed aquaculture removes the equivalent nutrient inputs entering 17.8 ha for nitrogen and 126.7 ha for phosphorus of Chinese coastal waters, respectively. Chinese seaweed aquaculture annually removes approximately 75,000 t nitrogen and 9,500 t phosphorus. Whereas removal of the total N inputs to Chinese coastal waters requires a seaweed farming area 17 times larger than the extant area, one and a half times more of the seaweed area would be able to remove close to 100% of the P inputs. With the current growth rate of seaweed aquaculture, we project this industry will remove 100% of the current phosphorus inputs to Chinese coastal waters by 2026. Hence, seaweed aquaculture already plays a hitherto unrealized role in mitigating coastal eutrophication, a role that may be greatly expanded with future growth of seaweed aquaculture.
KAUST Department:
Red Sea Research Center (RSRC)
Citation:
Xiao X, Agusti S, Lin F, Li K, Pan Y, et al. (2017) Nutrient removal from Chinese coastal waters by large-scale seaweed aquaculture. Scientific Reports 7: 46613. Available: http://dx.doi.org/10.1038/srep46613.
Publisher:
Springer Nature
Journal:
Scientific Reports
Issue Date:
21-Apr-2017
DOI:
10.1038/srep46613
Type:
Article
ISSN:
2045-2322
Sponsors:
This study was supported by the International Science & Technology Cooperation Program of China (2015DFA01410) and the National Natural Science Foundation of China (21677122). Anqi Wang assisted in making Figure 2.
Additional Links:
https://www.nature.com/articles/srep46613
Appears in Collections:
Articles; Red Sea Research Center (RSRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorXiao, Xien
dc.contributor.authorAgusti, Susanaen
dc.contributor.authorLin, Fangen
dc.contributor.authorLi, Keen
dc.contributor.authorPan, Yaoruen
dc.contributor.authorYu, Yanen
dc.contributor.authorZheng, Yuhanen
dc.contributor.authorWu, Jiapingen
dc.contributor.authorDuarte, Carlos M.en
dc.date.accessioned2017-04-25T05:48:40Z-
dc.date.available2017-04-25T05:48:40Z-
dc.date.issued2017-04-21en
dc.identifier.citationXiao X, Agusti S, Lin F, Li K, Pan Y, et al. (2017) Nutrient removal from Chinese coastal waters by large-scale seaweed aquaculture. Scientific Reports 7: 46613. Available: http://dx.doi.org/10.1038/srep46613.en
dc.identifier.issn2045-2322en
dc.identifier.doi10.1038/srep46613en
dc.identifier.urihttp://hdl.handle.net/10754/623275-
dc.description.abstractChina is facing intense coastal eutrophication. Large-scale seaweed aquaculture in China is popular, now accounting for over 2/3's of global production. Here, we estimate the nutrient removal capability of large-scale Chinese seaweed farms to determine its significance in mitigating eutrophication. We combined estimates of yield and nutrient concentration of Chinese seaweed aquaculture to quantify that one hectare of seaweed aquaculture removes the equivalent nutrient inputs entering 17.8 ha for nitrogen and 126.7 ha for phosphorus of Chinese coastal waters, respectively. Chinese seaweed aquaculture annually removes approximately 75,000 t nitrogen and 9,500 t phosphorus. Whereas removal of the total N inputs to Chinese coastal waters requires a seaweed farming area 17 times larger than the extant area, one and a half times more of the seaweed area would be able to remove close to 100% of the P inputs. With the current growth rate of seaweed aquaculture, we project this industry will remove 100% of the current phosphorus inputs to Chinese coastal waters by 2026. Hence, seaweed aquaculture already plays a hitherto unrealized role in mitigating coastal eutrophication, a role that may be greatly expanded with future growth of seaweed aquaculture.en
dc.description.sponsorshipThis study was supported by the International Science & Technology Cooperation Program of China (2015DFA01410) and the National Natural Science Foundation of China (21677122). Anqi Wang assisted in making Figure 2.en
dc.publisherSpringer Natureen
dc.relation.urlhttps://www.nature.com/articles/srep46613en
dc.rightsThis work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleNutrient removal from Chinese coastal waters by large-scale seaweed aquacultureen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalScientific Reportsen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionZhejiang University, Ocean College, 1 Zheda Road, Zhoushan, Zhejiang 316000, China.en
dc.contributor.institutionThe University of Western Australia, Oceans Institute, 35 Stirling Hwy, Crawley, WA 6009, Australia.en
kaust.authorAgusti, Susanaen
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