In-Situ Estimates of Net Ecosystem Metabolisms in the Rocky Habitats of Dokdo Islets in the East Sea of Korea SCIE SCOPUS

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Title
In-Situ Estimates of Net Ecosystem Metabolisms in the Rocky Habitats of Dokdo Islets in the East Sea of Korea
Author(s)
Lee, Jae Seong; Kim, Sung Han; Min, Won Gi; Choi, Dong Mun; Lee, Eun Kyung; Kim, Kyung Tae; An, Sung-Uk; Baek, Ju Wook; Lee, Won-Chan; Park, Chan Hong
KIOST Author(s)
Lee, Jae Seong(이재성)Kim, Sung Han(김성한)Min, Won Gi(민원기)Choi, Dong Mun(최동문)Lee, Eun Kyung(이은경)Kim, Kyung Tae(김경태)An, Sung-Uk(안성욱)Baek, ju Wook(백주욱)Park, Chan Hong(박찬홍)
Alternative Author(s)
이재성; 김성한; 민원기; 최동문; 이은경; 김경태; 안성욱; 백주욱; 박찬홍
Publication Year
2022-07
Abstract
We measured oxygen (O2) fluxes in two major shallow subtidal benthic habitats (kelp bed (KB) and bare rock (BR) covered with crustose coralline algae) of Dokdo islet in the East Sea by applying noninvasive in-situ aquatic eddy covariance (AEC). The AEC device allows time series measurements (~24 h) of three-dimensional velocity (u, v, and w components) and high-resolution dissolved O2. This allows estimation of O2 exchange flux via benthic habitats. Local flow rates and irradiance levels were found to be major factors controlling O2 exchange flux in the rocky habitats. Gross primary production rates tended to be significantly higher in KB (163 mmol O2 m–2 d–1) than in BR (51 mmol O2 m–2 d–1). The net ecosystem metabolisms were assessed as opposite types, with 8 mmol O2 m–2 d–1 in KB (autotrophy) and –12 mmol O2 m–2 d–1 in BR (heterotrophy). Our results indicate that kelp beds are important for organic carbon cycling in rocky coastal waters and that AEC application to macroalgae habitats is a useful assessment approach.
ISSN
2077-1312
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/43051
DOI
10.3390/jmse10070887
Bibliographic Citation
Journal of Marine Science and Engineering , v.10, no.7, 2022
Publisher
MDPI AG
Keywords
Dokdo islet; aquatic eddy covariance; benthic habitats; net ecosystem metabolism; benthic photosynthesis; crustose coralline algae; Ecklonia cava; Eisenia bicyclis; whitening
Type
Article
Document Type
Article
Publisher
MDPI AG
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