2013 Trophic State · 2014. 2. 10. · for POP mid-lake minima 1 ... Tropic State Metrics Author:...
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2013 Trophic State 1/15/2014 Upstate Freshwater Institute 1
Transcript of 2013 Trophic State · 2014. 2. 10. · for POP mid-lake minima 1 ... Tropic State Metrics Author:...
2013 Trophic State
1/15/2014 Upstate Freshwater Institute 1
Cayuga Lake, 1998-2012
1/15/2014 Upstate Freshwater Institute 2
LSC monitoring program
sites
site 8 pelagic zone
site 1, 3, 4, 5, 7 shelf
sites
Whole Lake
Monitoring Sites, 2013
9 in-lake sites
1 site in inlet near mouth
2 times per month, April-October
field measurements
water collection
phytoplankton sampling
zooplankton sampling
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More Frequent South Monitoring
Sites, 2013
field measurements
water collection (less parameters)
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Results: Long-term Lake Trophic
State Metrics 1998 – 2012, from LSC monitoring
Jun-Sept. avg.
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Chl
(µg
·L-1
)
0
5
10
Year
98 00 02 04 06 08 10 12
SD
(m
) 2
3
4
5
TP
(µ
g·L
-1)
0
10
20 pelagic, LSC study
shelf, LSC study
Relationships Between Trophic
State Metrics 1998 – 2012, from LSC monitoring
Jun-Sept avg.
added 2013, pelagic = 3, shelf = 2
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update
Chl
(µg
·L-1
)
0
5
10
Year
98 00 02 04 06 08 10 12
SD
(m
) 2
3
4
5
TP
(µ
g·L
-1)
0
10
20
shelf, shelf (site 2)
pelagic, 2013, site 3
pelagic, LSC study, site 8
shelf, LSC study,(sites 1,3,4,5,7)
Color Contour for Cayuga Lake:
May 21, 2013
1/15/2014 Upstate Freshwater Institute 7Distance from IL end (km)
0 10 20 30 40 50
5
10
15
20
25
30
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
De
pth
(m
) 5
10
15
20
25
30
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.75
3.00
0
5
10
15
20
25
30
5.0
7.5
10.0
12.5
15.0
17.5
20.0
22.5
25.0
27.5
T (°C) c660
(m-1
) Chlf (µg/L)
T
c660
Chlf
IL12 3 4 5 6 7 8 9
upper lake waters
turbidity inputs to site 4 area
lower Chlf
before noteworthy
stratification
Color Contour for Cayuga Lake:
June 18, 2013
1/15/2014 Upstate Freshwater Institute 8Distance from IL end (km)
0 10 20 30 40 50
5
10
15
20
25
30
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Depth
(m
) 5
10
15
20
25
30
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.75
3.00
0
5
10
15
20
25
30
5.0
7.5
10.0
12.5
15.0
17.5
20.0
22.5
25.0
27.5
T (°C) c660
(m-1
) Chlf (µg/L)
T
c660
Chlf
IL12 3 4 5 6 7 8 9
upper lake waters
evolving T stratification,
longitudinally variable
thickness (seiche activity)
Chlf extends deeper than
epilimnion
Color Contour for Cayuga Lake:
June 25, 2013
1/15/2014 Upstate Freshwater Institute 9Distance from IL end (km)
0 10 20 30 40 50
5
10
15
20
25
30
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Depth
(m
) 5
10
15
20
25
30
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.75
3.00
0
5
10
15
20
25
30
5.0
7.5
10.0
12.5
15.0
17.5
20.0
22.5
25.0
27.5
T (°C) c660
(m-1
) Chlf (µg/L)
T
c660
Chlf
IL12 3 4 5 6 7 8 9
distinct seiche patter for T,
thicker epilimnion at north
end
resuspension signal at
north end, high c660
variable Chlf longitudinally,
likely linked to seiche
Color Contour for Cayuga Lake:
July 25, 2013
1/15/2014 Upstate Freshwater Institute 10Distance from IL end (km)
0 10 20 30 40 50
5
10
15
20
25
30
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Depth
(m
) 5
10
15
20
25
30
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.75
3.00
0
5
10
15
20
25
30
5.0
7.5
10.0
12.5
15.0
17.5
20.0
22.5
25.0
27.5
T (°C) c660
(m-1
) Chlf (µg/L)
T
c660
Chlf
IL12 3 4 5 6 7 8 9
seiche activity, with piling of epilimnion at the south end
strong longitudinal structure in Chlf
elevated c660 in south surface waters
Profiles for Cayuga Lake: Sep.
17, 2013
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whole water column
Longitudinal Patterns of
Phosphorus Species
study averages for
surface waters
highest at southern end
mostly associated with
PP
greatest variability at
southern end
mid-lake minima
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TP
(µg
P/L
)
0
10
20
30
40
50
60
TD
P(µ
gP
/L)
0
10
20
30
40
50
Station IL 1 2 3 4 5 6 7 8 9
PP
(µg
P/L
)
0
10
20
30
40
50
Longitudinal Patterns of
Phosphorus Species
study averages for
surface waters
veracity of this
partitioning yet to be
established
highest at southern end
greatest variability at
southern end for PP and
PIP
less spatial differnences
for POP
mid-lake minima
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PP
(µg
P/L
)
0
10
20
30
40
50
PO
P(µ
gP
/L)
0
10
20
30
40
Station IL 1 2 3 4 5 6 7 8 9
PIP
(µg
P/L
)
0
10
20
30
40
Longitudinal Patterns of
Phosphorus Species
study averages for
surface waters
highest at southern end
greatest variablility at
southern end
mid-lake minima
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TD
P(µ
gP
/L)
0
3
6
9
12
15
DO
P(µ
gP
/L)
0
3
6
9
12
Station IL 1 2 3 4 5 6 7 8 9
SR
P(µ
gP
/L)
0
3
6
9
12
Longitudinal Patterns of SD
study averages for
surface waters
highest at southern end
greatest variablility at
southern end
mid-lake minima
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Longitudinal Patterns of Chlf
study averages for
surface waters
highest at southern end
greatest variablility at
southern end
mid-lake minima
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60m Lake P data vs. LSCeff
season average
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TP
(µg
P/L
)
0
5
10
15
20
TD
P(µ
gP
/L)
0
5
10
15
Station
LSCeff 3 4 5 6
PP
(µg
P/L
)
0
5
10
15
60m Lake P data vs. LSCeff
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season average
TD
P(µ
gP
/L)
0
3
6
9
12
15
DO
P(µ
gP
/L)
0
3
6
9
12
StationLSCeff 3 4 5 6
SR
P(µ
gP
/L)
0
3
6
9
12
80m Lake P data vs. LSCeff
season average
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TP
(µg
P/L
)
0
5
10
15
20
TD
P(µ
gP
/L)
0
5
10
15
Station
LSCeff 3 5
PP
(µg
P/L
)
0
5
10
15
80m Lake P data vs. LSCeff
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season average
TD
P(µ
gP
/L)
0
3
6
9
12
15
DO
P(µ
gP
/L)
0
3
6
9
12
StationLSCeff 3 5
SR
P(µ
gP
/L)
0
3
6
9
12
Frequent South
summer avg. (Jun-Sep.)
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