1. Seasonal and Annual Fluxes of
Nutrients and Organic
Matter from Large Rivers to the
Arctic Ocean and Surrounding Seas
Robert Max Holmes & James W. McClelland & Bruce J. Peterson & Suzanne E. Tank &
Ekaterina Bulygina & Timothy I. Eglinton & Viacheslav V. Gordeev &
Tatiana Y. Gurtovaya & Peter A. Raymond & Daniel J. Repeta & Robin Staples &
Robert G. Striegl & Alexander V. Zhulidov & Sergey A. Zimov
Estuaries and Coasts (2012) 35: 369-382

2. DOC
DON/DIN
TDP. Si
LandScan 2012

3. 180⁰
Watershed area
Pacific Ocean
135 W 135 E
Kolyma
Yukon
Mackenzie Lena
Arctic Yenisey
90 W 90 E
Ocean
75⁰N Ob
Atlantic Ocean 60⁰N
45 W
45 E
45⁰N Holmes et. al. 2012.
Estuaries and Coasts 35: 369-
0⁰ 382
.

5. PARTNERS
s Student
PARTNERS
Holmes et.al. ( 2012)

6. Holmes et.al. ( 2012)

7. Lena Mackenzie
Holmes et.al. (2012)

9. Holmes et. al. (2012)

11. N : P ( molar)
100
80
60
40
20
Ob Yenisey Lena Kolyma Yukon Mackenzie Combined
Holmes et. al. (2012)

12. • Improved understanding of constituent flux of
Conclusion fluvial export
nutrients and organic matter via
• Consistent sampling techniques and protocol
across pan-Arctic produced verifiable output for
use in modelling future changes to marine and
freshwater ecosystems
• Short term seasonal and annual flux to coastal
environments are sensitive to rapid dissolution
and trophic mismatch due 1) warming potential
in Arctic regions and 2) variability of fluvial
dynamics over time
• Potential for monitoring future modulation of
nutrients and organics using standardized results