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Now I will discuss
selected test results from our chemical measurements
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pH: reflects how
acidic or basic the water is
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-measured on a scale of 1
to 14, with 7 being neutral
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-organisms are highly
sensitive to pH changes in the water,
therefore pH determine which organisms are present in the lake
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-Maine lakes range from
about 4 to 9.5
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-TMP is neutral, indicating
a comfortable env for most organisms
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-normal:most me lakes not
subject to acid rain
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Alkalinity:
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-measures the ability of a
body of water to buffer against pH changes
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-influenced by the
concentrations of carbonate, bicarbonte, and other ions in the water column
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-indicates the lakes store
of inorganic carbon which can tell how well the lake will support algal
growth
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-Alkalinity is a precusor
test to pH, and a poor alkalinity will indicate a decline in lake health
before pH would be affected
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-TMP has a higher
alkalinity than the average alk for Me lakes, but this is a healthy level
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pH