Hyoung Sul La
Inha University
OceanographyGeologySea iceDiel vertical migrationArctic ice pack
What is this?
Publications 15
#1Hyoung Sul LaH-Index: 4
#2Keyhong ParkH-Index: 3
Last. Ho Kyung Ha (IIT: Inha University)H-Index: 15
view all 13 authors...
The vertical migration of zooplankton and micronekton (hereafter ‘zooplankton’) has ramifications throughout the food web. Here, we present the first evidence that climate fluctuations affect the vertical migration of zooplankton in the Southern Ocean, based on multi-year acoustic backscatter data from one of the deep troughs in the Amundsen Sea, Antarctica. High net primary productivity (NPP) and the annual variation in seasonal ice cover make the Amundsen Sea coastal polynya an ideal site in w...
1 CitationsSource
#1Minkyoung Kim (SNU: Seoul National University)H-Index: 13
Last. Jeomshik Hwang (SNU: Seoul National University)H-Index: 16
view all 8 authors...
Abstract. To study sinking particle sources and dynamics, sediment traps were deployed at three sites in the Amundsen Sea for 1 year from February–March 2012 and at one site from February 2016 to February 2018. Unexpectedly, large benthic invertebrates were found in three sediment traps deployed 130–567 m above the sea floor. The organisms included long and slender worms, a sea urchin, and juvenile scallops of varying sizes. This is the first reported collection of these benthic invertebrates in...
#1Hyoung Sul LaH-Index: 4
#2Koji ShimadaH-Index: 24
Last. Ho Kyung HaH-Index: 15
view all 9 authors...
#1Hyungbeen LeeH-Index: 3
#2Hyoung Sul LaH-Index: 4
Last. Hye Sun LeeH-Index: 27
view all 4 authors...
Abstract Mid-trophic level at high-latitude coastal water in the Southern Ocean reside unique geographical condition with sea ice, coastal polynya, and ice shelf. To investigate the regional differences in their vertical distribution during summer, we examined acoustic backscatter data from scientific echo sounder, collected in the three representative regions in the Amundsen Sea: pack ice zone, coastal polynya zone, and ice shelf zone. The weighted mean depths (WMDs) representing zooplankton we...
1 CitationsSource
#1Hyungbeen LeeH-Index: 3
#2Kyounghoon Lee (Chonnam National University)H-Index: 2
Last. Pyungkwan KimH-Index: 2
view all 5 authors...
High-temporal resolution profiles of acoustic backscatter were collected from a traditional bamboo set net along the coast of the Southern Sea, Korea, using sideward-looking multi-beam imaging sonar. These data were used to examine the impact of variations in tidal cycles and current speeds on the bamboo set net. The relatively high influx of fish during the nighttime compared to the low influx and high outflux of fish during the daytime suggests visual avoidance of the net by the fish during th...
1 CitationsSource
Vertical migration of zooplankton is ubiquitous behavior in marine plankton community; however, seasonal and interannual behavior are little observed in the deep sea under seasonal varying sea ice. Here, the first evidence that sound scattering layers of zooplankton can support the knowledge for understanding the effect of climate change is presented, based on four-years acoustic backscattering strengths in the Amundsen Sea, Antarctica. Amundsen Sea is a biological hotspot region with the rapid ...
#1Andrew Constable (CRCs: Cooperative Research Centre)H-Index: 15
#2Daniel P. Costa (UCSC: University of California, Santa Cruz)H-Index: 74
Last. Zdenka Willis (UCSC: University of California, Santa Cruz)H-Index: 3
view all 39 authors...
Reliable statements about variability and change in marine ecosystems and their underlying causes are needed to report on their status and to guide management. Here we use the Framework on Ocean Observing (FOO) to begin developing ecosystem Essential Ocean Variables (eEOVs) for the Southern Ocean Observing System (SOOS). An eEOV is a defined biological or ecological quantity, which is derived from field observations, and which contributes significantly to assessments of Southern Ocean ecosystems...
49 CitationsSource
2 CitationsSource
#2Eun Yae SonH-Index: 1
Last. Hyoung Sul LaH-Index: 4
view all 6 authors...