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Epipelagic mesozooplankton distribution and abundance in Southern Ocean Atlantic sector and the North Atlantic and Arctic 1996-2013
Citation
Ward, P., Tarling, G., Shreeve, R., & ten Hoopen, P. (2020). Epipelagic mesozooplankton distribution and abundance in Southern Ocean Atlantic sector and the North Atlantic and Arctic 1996-2013 [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/5A711904-EF42-46A3-9F47-3F0D6B231F65 https://doi.org/10.5285/5a711904-ef42-46a3-9f47-3f0d6b231f65
Contact: UK Polar Data Centre (NERC), more

Access data
Archived data
Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution 4.0 International License.

Notes: The publisher and rights holder of this work is British Antarctic Survey. This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.

Description
Mesozooplankton were collected with a motion-compensated Bongo net (61 cm mouth diameter, 100 and 200 micrometre meshes) and a mini- Bongo net (18 cm mouth diameter, 50 micrometre mesh nets). Both nets fished to a maximum depth of 400 m but sometimes shallower. Specimens were categorised to the lowest possible taxonomic level, which in some cases encompassed developmental stages but in other cases was limited to higher order taxa. Each taxa was enumerated to determine abundance in units of individuals m-2. The dataset allows examination of the distribution and abundance of these species within the Atlantic sector of the Southern Ocean over a number of years and covering much of the productive season from spring to autumn. The data for the North Atlantic and Arctic covers one season only (summer) and is limited to providing a spatial perspective on the distribution and abundance of mesozooplankton. more

Samples were retrieved by either a motion compensation Bongo net or a mini Bongo net, and then preserved with Borax buffered 10% formalin for analysis back at the home laboratory. Taxa were identified through examination by light microscopy. The abundance of each taxa within a sample was determined through examining a known fraction of the sample and then making an inverse multiplication of that fraction. Known fractions were principally achieved through the use of a Folsom splitter. Volumetric abundances (individuals m-2) were determined through dividing sample abundance by the volume of water sampled by the respective net. Net volume was mainly derived through multiplying the net opening diameter by the maximum depth of sampling. This calculation assumes 100% net sampling efficiency and that specimens were only captured during the ascent phase of the net deployment.
Data were gathered on a series of oceanographic cruises aboard the RRS James Clark Ross during expeditions to the Atlantic Sector of the Southern Ocean and the North Atlantic/Arctic.
All species were identified according to the taxonomic guides available at time of analysis and the user must be aware that some species names may have since been updated.

Scope
Themes:
Biology > Ecology - biodiversity, Biology > Plankton > Mesoplankton, Biology > Plankton > Zooplankton
Keywords:
Marine, Abundance, Distribution, A, North Atlantic, PN, Arctic, PS, Southern Ocean

Geographical coverage
A, North Atlantic [Marine Regions]
PN, Arctic [Marine Regions]
PS, Southern Ocean [Marine Regions]

Temporal coverage
1996 - 2013

Parameter
Occurrence of biota

Contributor
Natural Environment Research Council; British Antarctic Survey; UK Polar Data Centre, more

Related datasets
Published in:
AntOBIS: Antarctic Ocean Biodiversity Information System, more
(Partly) included in:
RAS: Register of Antarctic Species, more

Dataset status: Completed
Data type: Data
Data origin: Data collection
Metadatarecord created: 2021-07-05
Information last updated: 2021-07-05
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