234
M. Lang and D.W. Eckhoff
It was also assumed that turbidity is inversely proportional to secchi disc transparency:
. _ 1
(4)
Substituting equations (2), (3) and (4) into equation (1) and simplifying gives:
1
ΓΜ«Π·-3>)| / ^ \
d s
+ !
or
(!£) ds . [ ~ , ] e-(T-20
(5)
Equation (5) indicates that as temperature increases, the product of (lOXi/D) times d s
should decrease logarithmically. The data in Table I are plotted in Fig.l and show that
<Λ Ό
to — -
10
15
Temperature, °C
Fig.l. Effects of Temperature and Transparency on Effective Phytoplankton Biomass
in Jamaica Bay
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