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The freshwaters of Glacier Bay. NPS photo/B. Eichenlaub. NPS photo. Image courtesy of R. Edwards, US Forest Service. P. Kaiser/USFWS. NPS Photo. Source: Wikipedia.com. T. McCabe/USDA NRCS. Mayflies. Juvenile coho salmon. watershed age =. methylmercury. J. Armstrong. Program Delivery. - PowerPoint PPT Presentation
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Southeast Alaska NetworkInventory and Monitoring Program
The freshwaters of Glacier Bay
NPS photo/B. Eichenlaub
NPS photo
Image courtesy of R. Edwards, US Forest Service
Southeast Alaska NetworkInventory and Monitoring Program May 6, 2009
Southeast Alaska NetworkInventory and Monitoring Program May 6, 2009
T. McCabe/USDA NRCS
P. Kaiser/USFWS
NPS Photo
Source: Wikipedia.com
Southeast Alaska NetworkInventory and Monitoring Program May 6, 2009
OR, WI, & FL Sherman Cr. SEAN
Total Mercury (ng/g)
0
50
100
150
200Mayflie
s
Watershed age (years)
10 100 1000 10000
Total mercury (ng/g)
0
2
4
6
8
10
12
14
16
YoungMedium
Old
Juvenile coho salmon
watershed age = methylmercury
May Jun Jul Aug Sep Oct Nov
Salmon
May Jun Jul Aug Sep Oct Nov
Taiya
GlacialGround
May Jun Jul Aug Sep Oct Nov
Salmon
May Jun Jul Aug Sep Oct Nov
Taiya
GlacialGround
J. ArmstrongOR, WI, & FL Sherman Cr. SEAN
Total Mercury (ng/g)
0
50
100
150
200
Watershed age (years)
10 100 1000 10000
Total mercury (ng/g)
0
2
4
6
8
10
12
14
16
YoungMedium Old
May Jun Jul Aug Sep Oct Nov
Salmon
Southeast Alaska NetworkInventory and Monitoring Program
Program Delivery
http://science.nature.nps.gov/im/units/sean
Southeast Alaska NetworkInventory and Monitoring Program May 6, 2009
christopher_sergeant@nps.gov 364.1591
http://science.nature.nps.gov/im/units/sean
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