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Scientific
evidence accumulated over the last 70 years now reveals
that Lake Winnipeg is approaching a state of deterioration
that may affect ecosystem sustainability.
Significant changes in water transparency, biological species
composition, productivity, and sediment chemistry indicate
that the lake is on a trajectory of progressive eutrophication
not unlike that seen in the lower Laurentian Great Lakes during
the 1960s.
Chronological
Research History - The brief research history
of Lake Winnipeg is outlined.
Stresses on the lake are
increasing and continued scientific attention to the conditions
in the lake is essential to identify
and quantify chemical inputs, organisms and processes and
to determine their fate in and effects on the lake ecosystem.
Through the leasing of the M.V. Namao, the LWRC provided
on-lake access for federal, provincial and university investigators
for a 3 year period to examine temporal and spatial variability
of the chemical, physical and biological parameters of Lake
Winnipeg. Support to the LWRC for the leasing of the Namao
was provided by Manitoba Hydro, the provincial and federal
governments and private funding. 65
lake-wide stations were
sampled per survey.
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The
Nature of the Research (2002 to 2004) - Lake Winnipeg
Research Consortium - The structure and details of
the surveys are described. |
Recent Findings
Findings presented herein are primarily
from the 2003 field season; however, some comparisons
are made with other years of research, including the
early studies where possible.
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Survey
Details
2002
2003
2004
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