A Collapsible Opening-Closing Net for Zooplankton Sampling through Ice

The English umbrella net is a new-design vertical closing net developed to sample zooplankton populations in under-ice environments. Operating on the principle of an umbrella, this wide-mouth net fits through a hole drilled in sea ice and expands below the ice to sample the water column. A messenger...

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Bibliographic Details
Published in:Journal of Plankton Research
Main Authors: Macaulay, Michael C., Daly, Kendra L.
Format: Article in Journal/Newspaper
Language:unknown
Published: Digital Commons @ University of South Florida 1987
Subjects:
Life Sciences
Arctic
Arctic Ocean
Sea ice
Zooplankton
Online Access:https://digitalcommons.usf.edu/msc_facpub/827
https://doi.org/10.1093/plankt/9.6.1069
Description
Summary:The English umbrella net is a new-design vertical closing net developed to sample zooplankton populations in under-ice environments. Operating on the principle of an umbrella, this wide-mouth net fits through a hole drilled in sea ice and expands below the ice to sample the water column. A messenger-activated release closes the net for a discrete sample and collapses the frame so that it can be retrieved back through the hole in the ice. Nets of this design were used for extensive sampling on Fletcher's Ice Island (T-3) in the Arctic Ocean.

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