SCIENCE REVIEW 1987 - Bedford Institute of Oceanography

Fig. 9 An underice current meter capable of
being deployed through a 24 cm diameter ice
hole.
All the instruments described here and
others were designed to survive the harsh
Arctic environment and to be portable,
allowing scientists to survey large areas of
frozen waterways. Generally each of these
instruments has a single unique function
and measures a single parameter relating to
under-ice plankton and their environment.
The data provided by these instruments
is allowing us to probe the nature of our
Arctic underice food chain and to respond
quickly to future survey requirements of
our ecologically sensitive Arctic
waterways.
References
CONOVER, R.J., HERMAN, A.W., PRINSEN-
BERG, S.J., and HARRIS, L.R.. 1986. Distribuiton
of and feeding by the copepod Psuedocalanus under
fast ice during the Arctic spring. Science 232, 1245-
1247.
HERMAN, A.W. 1988. Simultaneous measurement
of zooplankton and light attenuance with a new
optical plankton counter. Continental Shelf Research,
8, 205-221.
SCHRADER, G.C., R. HORNER, R. and SMITH,
G.F. 1981. An improved chamber for in situ
measurement of primary productivity by sea ice algae.
Canadian Journal of Fisheries and Aquatic Sciences,
39, 522-524.
53