한국 남해와 동중국해 북부해역 표층혼합층 내에서 미세플라스틱의 중형동물플랑크톤에 대한 잠재적 위해성

Title
한국 남해와 동중국해 북부해역 표층혼합층 내에서 미세플라스틱의 중형동물플랑크톤에 대한 잠재적 위해성
Alternative Title
The potential impact of microplastics to mesozooplankton in the surface mixed layer of South Sea of Korea and Northern East China Sea
Author(s)
강정훈; 김민주
KIOST Author(s)
Kang, Jung Hoon(강정훈)Kim, Minju(김민주)
Publication Year
2019-05-16
Abstract
The potential impacts of microplastics to mesozooplankton was surveyed at 27 stations in the surface mixed layer of South Sea of Korea (SSK) and Northern East China Sea (NECS) during August 2016. The samples were collected using bongo net (mesh size: 20011m) and
physico-chemical properties were obtained by CTD sensors. The offshore waters were
relatively warmer and low-saline (Avg. 30.7°C, 27.4 psu) compared to coastal waters (Avg. 28.6°C, 28.8 psu). The total microplastic abundance ranged from 1.16~22.05 particles/m3, in
which the abundance peaked at eastern most station of the study area. Types of microplastics
observed were fragment, fiber, paint particles, and film, of which polymer types were
polyester, acrylic, epoxy resin, alkyd-resin and polyester-alkyd. Fiber (Avg. 57. 7%) and paint
particles (Avg. 39.6%) were ubiquitously dominant. The total mesozooplankton abundance ranged from 778~ 13,728 inds./m3, of which peaked at western most station of the study area.
The average dominant taxa groups for all stations were immature copepods (31.9% ), adult
copepods (31.9%) and cladocerans (7 .5% ). Cluster analysis of microplastics divided stations
into 4 major groups. The dominant microplastics in group-1 were paint particles (66.7%), and
dominant mesozooplankton taxonomic groups were copepods (immature and adults 60.0%)
followed by appendicularians (20.0%). Group-2, group-3 and group-4 were all dominant in
fiber (group-2: 87.7%, group-3: 45.6%, group-4: 50.7%), and copepods (group-2: 70.2%,
group-3: 69.1 %, group-4: 54.2%), however next dominant mesozooplankton groups differed,
in which group-2 and -3 were cladocerans (group-2: 12.5% group-3: 11 .0%), and group-4
were thaliaceans (9.8%). The ratio of microplastic-to-zooplankton ranged from 0.0001~0.0205 (Avg. 0.0028), in which ratio peaked at two stations of group-4. Above results suggest that numerically dominant fibers and paint particles, which is widely distributed, are likely to be encountered
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/22655
Bibliographic Citation
제 7차 한중 해양과학심포지움, pp.293, 2019
Publisher
2019년도 한국해양과학기술협의회 공동학술대회
Type
Conference
Language
English
Publisher
2019년도 한국해양과학기술협의회 공동학술대회
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