Chuckchi Sea Zooplankton Collections from 1953-1954

Vertical stratified zooplankton collections from the Chuckchi Sea in the Arctic Ocean during August of 1953 and 1954. The dataset includes measurements of temperature, salinity, and oxygen concentrations at multiple depth layers across 21 stations, collected by the Russian R/V Lomonosov under program ANII A-65. Data was gathered to assess interannual changes in species composition, abundance, and distribution.

Use Cases

• Analyze interannual changes in zooplankton abundance and biomass between 1953 and 1954 using station and year data.
• Model the relationship between environmental factors like temperature, salinity, and oxygen concentrations and the dominance of North Pacific species (e.g., Metridia pacifica).
• Map the spatial distribution of zooplankton communities across the 21 geo-referenced stations in the southern Chuckchi Sea.
• Investigate vertical stratification of species by analyzing data from specific depth layers (0-10 m, 10-25 m, 25 m-bottom).

Strengths

• Data includes concurrent environmental measurements (temperature, salinity, oxygen) at each sampled depth layer.
• Collections are vertically stratified across three specific depth ranges at 21 geo-referenced stations.
• Covers two specific years (1953, 1954) allowing for interannual comparison.

Limitations

• Dataset is temporally limited to two sampling periods in August, with no other seasonal data.
• Sample size is limited to 21 stations, which may not capture full spatial variability of the region.
• Data is historically old (from the 1950s), which may limit direct comparability with modern oceanographic conditions.

Provenance

Source

SCIOPS, collected via the Russian R/V Lomonosov.

Collection Method

Vertical stratified tows using a Nansen net (0.5 m diameter, 333 micrometer mesh) at specified depth intervals.

Time Range

August 1953 to August 1954

Freshness

Data collection ended in August 1954.

Geography

Chuckchi Sea in the Arctic Ocean