Changes in the Dynamics and Nutrient Budget of a Macroalgal Community Exposed to Land-Based Fish Farm Discharge Off Jeju Island, Korea SCIE SSCI SCOPUS

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Title
Changes in the Dynamics and Nutrient Budget of a Macroalgal Community Exposed to Land-Based Fish Farm Discharge Off Jeju Island, Korea
Author(s)
Choi, Sun Kyeong; Kim, Tae Hyeon; Kang, Yun Hee; Kim, Sangil; Kim, Tae-Hoon; Kim, Jang Kyun; Lee, Tae Hee; Son, Young Baek; Lee, Hyuk Je; Park, Sang Rul
KIOST Author(s)
Lee, Tae Hee(이태희)Son, Young Baek(손영백)
Alternative Author(s)
이태희; 손영백
Publication Year
2021-11
Abstract
This study aimed to investigate the dynamics of the nutrient budget of a macroalgal community exposed to water discharged from aquaculture farms. This study was conducted in the coastal area exposed to water discharged from aquaculture farms located on Jeju Island, Korea, in May and October of 2017. Water-column-dissolved inorganic nutrient concentrations were higher in the intertidal zone than in the subtidal zone. High nutrient concentrations in the intertidal zone resulted in the bloom of Ulva spp., consequently leading to a low species number. This indicates the vulnerability of the intertidal macroalgal community to discharge from land-based aquaculture. Ecklonia cava contributed to 29–53% of the total incorporation of carbon (C), nitrogen (N), and phosphorus (P) in the subtidal zone. In the intertidal zone, the highest tissue N content was found in Ulva spp. due to the high and rapid nutrient uptake rate from the effluent with high nutrient concentrations, thereby indicating high total N incorporation. The estimated total C, N, and P incorporation rates by macroalgae were 181.5, 8.6, and 0.95 tons year−1, respectively. These results suggest that the macroalgal community in this area absorbs or removes large amounts of nutrients from the water column and plays an important role in the budgets and cycling of nutrients in the surrounding coastal areas.
ISSN
2071-1050
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/41676
DOI
10.3390/su132111793
Bibliographic Citation
Sustainability, v.13, no.21, 2021
Publisher
MDPI Open Access Publishing
Keywords
ecological role; fish farm effluent; macroalgal community structure; nutrient incorporation; nutrient sink; Ulva spp.; Ecklonia cava
Type
Article
Language
English
Document Type
Article
Publisher
MDPI Open Access Publishing
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