The limnological study of Toolik Lake began in the Summer of 1975.
This research was an outgrowth of the arctic IBP project which had
focused mainly on small Arctic pond ecosystems on the Alaskan
Arctic coastal plain. It was thought desirable to study larger,
deeper lakes which contained fish to further generalizations
developed during the IBP study. Initial research on Toolik Lake and
the surrounding lakes and ponds focused on process studies such as
annual primary productivity of the lake or the vertical migration
patterns of the resident zooplankton. In 1983 the philosophy of the
research changed with the funding of a more integrated programmer.
The fundamental question posed was whether Arctic lake and stream
ecosystems are regulated from the bottom up by nutrient
availability or from the top down by the density and activity of
top predators. In 1987 the Toolik Lake area was designated an LTER
(Long-Term Ecological Research) site, one of 18 such sites
throughout the United States, Puerto Rico, and the Antarctic. The
research theme for the Arctic LTER also focuses on the regulation
of Arctic ecosystems, whether regulation comes from the top down or
bottom up. The Arctic LTER also incorporates a terrestrial
component as well as a lake and stream component.
General
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