Estimation of Net Ecosystem Metabolism of Seagrass Meadows in the Coastal Waters of the East Sea and Black Sea using the Noninvasive Eddy Covariance Technique
SCIE
SCOPUS
KCI
Cited 7 time in
WEB OF SCIENCE
Cited 7 time in
Scopus
-
Title
- Estimation of Net Ecosystem Metabolism of Seagrass Meadows in the Coastal Waters of the East Sea and Black Sea using the Noninvasive Eddy Covariance Technique
-
Author(s)
- Lee, Jae Seong; Kang, Dong-Jin; Hineva, Elitsa; Slabakova, Violeta; Todorova, Valentina; Park, Jiyoung; Cho, Jin-Hyung
- KIOST Author(s)
- Lee, Jae Seong(이재성); Kang, Dong Jin(강동진); Cho, Jin Hyung(조진형)
-
Alternative Author(s)
- 이재성; 강동진; 박지영; 조진형
-
Publication Year
- 2017-06
-
Abstract
- We measured the community-scale metabolism of seagrass meadows in Bulgaria (Byala [BY]) and Korea (Hoopo Bay [HP]) to understand their ecosystem function in coastal waters. A noninvasive in situ eddy covariance technique was applied to estimate net O-2 flux in the seagrass meadows. From the highquality and high-resolution time series O-2 data acquired over > 24 h, the O-2 flux driven by turbulence was extracted at 15-min intervals. The spectrum analysis of vertical flow velocity and O-2 concentration clearly showed well-developed turbulence characteristics in the inertial subrange region. The hourly averaged net O-2 fluxes per day ranged from-474 to 326 mmol O-2 m(-2) d(-1) (-19 +/- 41 mmol O-2 m(-2) d(-1)) at BY and from-74 to 482 mmol O2 m-2 d-1 (31 +/- 17 mmol O-2 m(-2) d(-1)) at HP. The net O-2 production rapidly responded to photosynthetically available radiation (PAR) and showed a good relationship between production and irradiance (P-I curve). The hysteresis pattern of P-I relationships during daytime also suggested increasing heterotrophic respiration in the afternoon. With the flow velocity between 3.30 and 6.70 cm s(-1), the community metabolism during daytime and nighttime was significantly increased by 20 times and 5 times, respectively. The local hydrodynamic characteristics may be vital to determining the efficiency of community photosynthesis. The net ecosystem metabolism at BY was estimated to be-17 mmol O-2 m(-2) d(-1), which was assessed as heterotrophy. However, that at HP was 36 mmol O-2 m(-2) d(-1), which suggested an autotrophic state.
-
ISSN
- 1738-5261
-
URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/1227
-
DOI
- 10.1007/s12601-017-0032-5
-
Bibliographic Citation
- OCEAN SCIENCE JOURNAL, v.52, no.2, pp.243 - 256, 2017
-
Publisher
- KOREA OCEAN RESEARCH DEVELOPMENT INST
-
Subject
- DIFFUSIVE BOUNDARY-LAYERS; EELGRASS ZOSTERA-MARINA; SEDIMENT SUSPENSION; AQUATIC SEDIMENTS; OXYGEN DYNAMICS; PHOTOSYNTHESIS; EXCHANGE; LIGHT; BEDS; FLUX
-
Keywords
- eddy covariance; noninvasive measurement; oxygen flux; carbon cycle; eelgrass meadow; net ecosystem metabolism
-
Type
- Article
-
Language
- English
-
Document Type
- Article
- Files in This Item:
-
There are no files associated with this item.
Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.