[논문]2016년 한국 근해 난바다곤쟁이류의 시·공간적 분포

이보람; 박원규; 이해원; 최정화; 오택윤; 김두남

doi:10.5657/kfas.2021.0456

[국내논문] 2016년 한국 근해 난바다곤쟁이류의 시·공간적 분포
Spatio-Temporal Distribution of Euphausiids in Korean Waters in 2016 원문보기

한국수산과학회지 = Korean journal of fisheries and aquatic sciences, v.54 no.4, 2021년, pp.456 - 466

이보람 (국립수산과학원 수산자원연구센터) , 박원규 (부경대학교 자원생물학과) , 이해원 (국립수산과학원 수산자원연구센터) , 최정화 (국립수산과학원 제주수산연구소) , 오택윤 (국립수산과학원 수산자원연구센터) , 김두남 (국립수산과학원 원양자원과)

Abstract ▼ AI-Helper

The distribution and abundance of euphausiids were investigated in Korean waters in 2016. Euphausiids were sampled with a Bongo net. A CTD (Sea Bird Electronics 9 plus) measured the water temperature and salinity while sampling. Mean water temperature ranged from 4.2-31.0℃. The highest temperatures occur in September and lowest temperatures in February. The mean water salinity ranged from 27.9-34.8 psu, with the highest salinities in March and lowest in September. Euphausiid species in group W consisted of four species. Among the euphausiid species, Euphausia pacifica was the dominant species with peak densities in September. The E. pacifica from group W was distributed in the bottom cold water during summer when a thermocline was formed. Five euphausiid species occurred in group S. E. pacifica and E. nana were the dominant species. In group S, E. nana was located in the warm and saline Tsushima Warm Current, a branch of the influential Kuroshio Current. Five euphausiid species occurred in group E. E. pacifica and T. longipes were the dominant species. In group E, E. pacifica and T. longipes were distributed in the deep and cold waters, these species prefer low water temperatures and perform vertical migration. The distribution of euphausiids in Korean waters were highly influenced by mass water characteristics, such as temperature and salinity.

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표/그림 (15)

그림 Fig. 1. Map of Euphausiids sampling stations in Korea waters in 2016.
그림 Fig. 2. Horizontal distribution of temperature at the surface layer in 2016.
그림 Fig. 3. Horizontal distribution of temperature at the bottom layer in 2016.
그림 Fig. 4. Horizontal distribution of salinity at the surface layer in 2016.
그림 Fig. 5. Horizontal distribution of salinity at the bottom layer in 2016.
그림 Fig. 6. Clustering of water masses by temperature and salinity in 2016.
그림 Fig. 7. Mean density (bar) and species number of euphausiids (line) in Korea waters in 2016.
그림 Fig. 8. Variation of mean densities of euphausiids in the group W in 2016.
그림 Fig. 9. Variation of mean densities of euphausiids in the group S in 2016.
그림 Fig. 10. Variation of mean densities of euphausiids in the group E in 2016.
그림 Fig. 11. Spatial distribution of Euphausia pacifica density (inds.m^-3) in 2016.
표 Table 1. Results of Spearman rank correlation coefficient between dominant species and environmental factors in Korea waters in 2016
그림 Fig. 12. Spatial distribution of Euphausia nana density (inds.m^-3) in 2016.
그림 Fig. 13. Spatial distribution of Pseudeuphausia latifrons density (inds.m^-3) in 2016.
그림 Fig. 14. Spatial distribution of Thysanoessa longipes density (inds.m^-3) in 2016.

AI 본문요약
AI-Helper

문제 정의

난바다곤쟁이류도 한국 근해의 해양학적 특성에 따라 독특한 분포 형태를 이루고 있기 때문에 이에 따른 분포 특성에 대한 이해가 필요하다. 따라서 본 연구는 한국 근해의 해양학적 특성에 따른 난바다곤쟁이류의 분포 특성을 이해함을 목적으로 한다.

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