[논문]Ecosystem Consequences of an Anomalously High Zooplankton Biomass in the South Sea of Korea

Kang, Young-Shil; Rebstock, Ginger-A.

[국내논문] Ecosystem Consequences of an Anomalously High Zooplankton Biomass in the South Sea of Korea 원문보기

Journal of the Korean society of oceanography, v.39 no.4, 2004년, pp.207 - 211

Kang, Young-Shil (National Fisheries Research & Development Institute, Marine Harmful Organisms Division) , Rebstock, Ginger-A. (Department of Biology, University of Washington)

Abstract ▼ AI-Helper

We used long time series of hydrographic and biological variables to examine the ecosystem consequences of a rare, anomalous event in the south sea of Korea. The highest zooplankton biomass in 36 years of sampling occurred in April 1997. Zooplankton biomass exceeded 2 times than the long-term mean at 35% of the stations. Copepod abundance was low in April and June and also failed to show a seasonal peak in 1997. Mackerel (Scomber japonicus) catches were very low in spring 1997 and 1999, in spite of a positive correlation between zooplankton biomass and mackerel catches at lags of 0, 12 and 24 months. It was discussed that a high zooplankton biomass with low copepod abundance in April 1997 resulted from unusual high temperature and salps abundance. Water temperatures were ca. $2^{\circ}C$ higher than the long-term mean at the surface. Salps and doliolids (thaliaceans), especially the warm-water species Doliolum nationalis, dominated the zooplankton. An unusual incursion of the Tsushima Warm Current may have transported the thaliaceans into the area and/or produced favorable conditions for a bloom. This study suggested that taxonomic composition of zooplankton was important to decide mackerel catches.

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참고문헌 (16)

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[국내논문] Ecosystem Consequences of an Anomalously High Zooplankton Biomass in the South Sea of Korea 원문보기

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