Download - DISSOLVED OXYGEN and system metabolism in flowing waters Including a bonus natural disaster (GLOF)
DISSOLVED OXYGEN and system metabolism in flowing watersIncluding a bonus natural disaster (GLOF)
B.L. Reid
Centro de Investigación en Ecosístemas de la
Patagonia (CIEP)
Flathead Lake Biological StationThe University of Montana
DO Isopleths:
Surficial Groundwater
DO Isopleths:
Surficial Groundwater
Jun 04 Aug 04 Nov 04 Jan 05 May 05
0
2
4
6
1293 6
0
2
4
6
8
0
2
4
6
8
10
0
2
4
6
8
DO Isopleths:
Surficial Groundwater
0
3
6
9
12
30 20 10
Flowpath Residence Time - Tau (d)
Mea
n D
O (
mg/
l)
0
4
8
12
Jun-04 Sep-04 Dec-04 Mar-05 Jun-05 Sep-05 Dec-05 Mar-06
DO
(m
g/l)
M3
M2
M1
17
M3
M2
M1
17
M3
M2
M1
17
M3
M2
M1
17
0
2
4
6
8
Res
p (
μg
O2/
lsed
/hr)
Recharge - river
Horizontal Flow Zone
Discharge Zone
“A skillful limnologist can probably learn more about the nature of a lake from a series of oxygen determinations than from any other kind of chemical data”
– G. Evelyn Hutchinson
y = 18.119x - 13.929
R2 = 0.8848
0
50
100
150
200
250
300
0 2 4 6 8 10 12
avg DO (mg/l)
avg
NO
x (u
g/l)
River
wells
R2 = 0.704
0 100 200 300 400
DO (μmol/l)
100
150
200
250
300
DS
i (μm
ol/l)
R2 = 0.9183
0
100
200
300
400
500
(uS/
cm-2 s
-1)
River
Wells
R2 = 0.703
7
8
9
0 2 4 6 8 10 12
mean DO (mg/l)
pH
Spec
ific
Con
ducr
ance
BGC along aquifer flowpaths: threshold response….
River Metabolism: Rio Coyhaique, Chile
10.4
10.8
11.2
11.6
12
12.4
12.8
0 2 4 6 8 10
Temp (deg C)
DO
(mg/
l)
Day 1; >1600
0800 to 1600
Day 2; >1600
10
11
12
13
18:50 21:50 0:50 3:50 6:50 9:49 12:49 15:49 18:49 21:49
DO
(m
g/l)
0
1
2
3
4
5
6
7
8
9DO
Temp
Daytime:
DO = P – R + Raer
Nightime:
DO = – R + Raer
9 Sep 2008
8.8
9.2
9.6
10
10.4
10.8
9 11 13 15
Temp (deg C)
DO
(mg/
l)Day 1; >1600
0800 to 1600
Day 2; >1600
25 Nov 2008
Assumptions on Ecosystem Metabolism?
7
8
9
10
11
12
13
14
0 5 10 15 20 25Temp (deg C)
DO
(m
g/l)
16-Aug 19-Aug 4-Sep 9-Sep 27-Oct
10-Nov 18-Nov 25-Nov 10-Dec
Saturation (270m)
Is this Robust Pattern?
8
9
10
11
12
13
21:36 0:35 3:35 6:35 9:35 12:35 15:35 18:35 21:35
DO
(m
g/l)
16
17
18
19
20
21
Tem
p (d
eg C
)
DO
Temp
8
9
10
11
12
13
15 16 17 18 19 20 21
Temp (deg C)
DO
(mg/
l)
Day 1; >1600
0700 to 1900
Day 2; >1600
Environmental Stress?
From A. Stehr, EULA
U de Concepcion
Metabolism in the Landscape: Rivers vs. Lakes?
0
500
1000
1500
2000
2500
Oct
-04
Jan-
05
Apr
-05
Jul-
05
Oct
-05
Jan-
06
Apr
-06
Jul-
06
Oct
-06
Jan-
07
Apr
-07
Jul-
07
Oct
-07
Jan-
08
Apr
-08
Q (
m3 s
-1)
bajo L. Bertrand en A. Chacabuco bajo R. Colonia 3370
0
5
10
15
May
-06
Aug
-06
Nov
-06
Feb
-07
May
-07
Aug
-07
Nov
-07
Feb
-08
May
-08
Tem
p (
ºC)
bajo L. Bertrand en A. Chacabuco bajo R. Colonia
9.25
9.75
10.25
0:00 3:00 6:00 9:00 12:00 15:00 18:00 21:00 0:00 3:00 6:00
DO
(m
g/l)
12.5
13
13.5
14
14.5DO
Temp
9
10
11
12.5 13 13.5 14 14.5
Temp (deg C)
DO
(m
g/l)
Day 1<0600
0600 to 2000
Day 2; >2000
10.75
11.25
11.75
12.25
12.75
19:12 22:12 1:12 4:12 7:12 10:12 13:12 16:12 19:12
DO
(m
g/l)
10.5
11
11.5
12
12.5
13
13.5DO
Temp
10.75
11.75
12.75
10.5 11 11.5 12 12.5 13 13.5
Temp (deg C)
DO
(m
g/l)
Day 1<0600
0600 to 2000
0
20
40
60
80
100
1:12:00 PM 1:26:24 PM 1:40:48 PM 1:55:12 PM
DO
(m
g/l)
10
20
30
40
50DO
Temp
Outlet LG Carrera Balsa Baker (km 50)
Tortel (km 150)
Lago Sauce Grande
9.2
9.6
10
12 12.5 13 13.5 14
Temp (deg C)
DO
(mg/
l)
0800 to 1900
1900-0800
Day2>0800
9.2
9.6
10
15.4 15.6 15.8 16 16.2
Temp (deg C)
DO
(mg/
l)Day 1; >1600
0800 to 1600
Day 2; >1600
Outlet: Lago Yulton
Outlet: Lago Traiguen
6.00
8.00
10.00
12.00
14.00
10 15 20 25
Temperature (deg C)D
O (
mg
/l)
Saturation
Day 1 <0800
Day 1 0800 to 1800
Day 1 >1800