236
Land-Ocean Systems in the Siberian Arctic: Dynamics and History
calculations indicate that riverine POM is formed mainly from detrital organic material. This is
in general agreement with the small amount of total phytoplankton biomass in the Lena (Cauwet
and Sidorov, 1996; Sorokin and Sorokin, 1996). However, in the Lena delta, at total SPM
concentrations < 10 mg/l, the autochthonous endmember becomes more important.
Accordingly, higher amounts of phytoplankton biomass have been observed in the delta
(Sorokin and Sorokin, 1996).
Although the data base of the TOC, POC, and DOC export of the Siberian rivers is still very
limited, existing data indicate the significance of Siberian river runoff for the Laptev Sea.
Table 2: Organic carbon fluxes of Siberian rivers draining to the LapteY Sea: (I) this study; (2) Lara et aI., in
press; (3) Romankeyich and Artemyev, 1985; (4) Cauwet and Sidorov, 1996; (5) Te1ang et aI., 1991.
poe!
Doe 2
Toe!
Toe 3
Toe 4
ToeS
t·yr- I
t . yr- I
t . yr- I
t . yr- I
t . yr- I
t· yr- I
Lena River
1.2 . 106
3.6. 106
4.8 . 106
5.06 . 10 6
5.3 . 106
4.8· 10 6
Yana River
0.06. 106
0.2. 106
Khatanga River 0.04. 10 6
Acknowledgments
The authors wish to thank A. M. Alabyan, V. N. Korotaev, and A. A. Zaitsev for organizing
the "Lena 94" and "LenalYana 95" expeditions and A. W. Ufimzev, who arranged most of the
"Khatanga 96" expedition. Special thanks to the captains and crew members of RV "Prof.
Makkaveev", "Sarya 9", and RV "Lotsman". L. Schonicke and M. Stapke are gratefully
acknowledged for supporting the analytical work. The comments of U. Wand, H. Oberhansli,
of the reviewer M. E. Bottcher, and of one anonymous reviewer helped to improve the
manuscript. This study is funded by the German Ministry of Education, Science, Research and
Technology (BMBF) within the "Verbundvorhaben System Laptev See". This is publication
No 1357 of the Alfred Wegener Institute for Polar and Marine Research.
References
Alabyan, A.M., R.S. Chalov, V.N. Korotaev, A.Y. Sidorchuk, and A.A. Zaitsev (1995) Natural and
technogenic water and sediment supply to the Laptev Sea. Reports on Polar Research, 176,265-271.
Bischof, J., J. Koch, M. Kubisch, R.F. Spielhagen, and J. Thiede (1990) Nordic Seas surface ice drift
reconstructions: evidence from ice rafted coal fragments during oxygen isotope stage 6. In: Glacimarine
environments: processes and sediments, Dowdeswell, J.A. and J.D. Scourse (eds.), Geological Society,
London (Geological Society Special Publ. No 53), 235-251.
Cai, D., F.C. Tan and J.M. Edmond (1988) Sources and transport of particulate organic carbon in the Amazon
ri ver and estuary. Estuarine, Coastal and Shelf Science, 26, 1-14.
Cauwet, G. and F.T. Mackenzie (1993) Carbon inputs and distribution in estuaries of turbid rivers: the Yang Tze
and Yellow rivers (China). Mar. Chern., 43, 235-246.
Cauwet, G. and 1.S. Sidorov (1996) The biogeochemistry of Lena River: organic carbon and nutrient
distribution. Mar. Chern., 53, 211-227.
Degens, E.T., S. Kempe and J.E. Ritchey (1991) Biogeochemistry of major world rivers. Wiley, New York
(SCOPE 42), 356pp.
Dethleff, D., D. Niirnberg, E. Reimnitz, M. Saarso and Y.P. Savchenko (1993) East Siberian Arctic Region
Expedition '92: The Laptey Sea - Its significance for Arctic sea-ice formation and transpolar sediment flux.
Reports on Polar Research, 120, 1-44.
Eicken, R., E. Reimnitz, V. Alexandrov, T. Martin, R. Kassens and T. Viehoff (1996) Sea-ice processes in the
Laptev Sea and their importance for sediment transport. Continental Shelf Res., 17,205-233.
Land-Ocean Systems in the Siberian Arctic: Dynamics and History
calculations indicate that riverine POM is formed mainly from detrital organic material. This is
in general agreement with the small amount of total phytoplankton biomass in the Lena (Cauwet
and Sidorov, 1996; Sorokin and Sorokin, 1996). However, in the Lena delta, at total SPM
concentrations < 10 mg/l, the autochthonous endmember becomes more important.
Accordingly, higher amounts of phytoplankton biomass have been observed in the delta
(Sorokin and Sorokin, 1996).
Although the data base of the TOC, POC, and DOC export of the Siberian rivers is still very
limited, existing data indicate the significance of Siberian river runoff for the Laptev Sea.
Table 2: Organic carbon fluxes of Siberian rivers draining to the LapteY Sea: (I) this study; (2) Lara et aI., in
press; (3) Romankeyich and Artemyev, 1985; (4) Cauwet and Sidorov, 1996; (5) Te1ang et aI., 1991.
poe!
Doe 2
Toe!
Toe 3
Toe 4
ToeS
t·yr- I
t . yr- I
t . yr- I
t . yr- I
t . yr- I
t· yr- I
Lena River
1.2 . 106
3.6. 106
4.8 . 106
5.06 . 10 6
5.3 . 106
4.8· 10 6
Yana River
0.06. 106
0.2. 106
Khatanga River 0.04. 10 6
Acknowledgments
The authors wish to thank A. M. Alabyan, V. N. Korotaev, and A. A. Zaitsev for organizing
the "Lena 94" and "LenalYana 95" expeditions and A. W. Ufimzev, who arranged most of the
"Khatanga 96" expedition. Special thanks to the captains and crew members of RV "Prof.
Makkaveev", "Sarya 9", and RV "Lotsman". L. Schonicke and M. Stapke are gratefully
acknowledged for supporting the analytical work. The comments of U. Wand, H. Oberhansli,
of the reviewer M. E. Bottcher, and of one anonymous reviewer helped to improve the
manuscript. This study is funded by the German Ministry of Education, Science, Research and
Technology (BMBF) within the "Verbundvorhaben System Laptev See". This is publication
No 1357 of the Alfred Wegener Institute for Polar and Marine Research.
References
Alabyan, A.M., R.S. Chalov, V.N. Korotaev, A.Y. Sidorchuk, and A.A. Zaitsev (1995) Natural and
technogenic water and sediment supply to the Laptev Sea. Reports on Polar Research, 176,265-271.
Bischof, J., J. Koch, M. Kubisch, R.F. Spielhagen, and J. Thiede (1990) Nordic Seas surface ice drift
reconstructions: evidence from ice rafted coal fragments during oxygen isotope stage 6. In: Glacimarine
environments: processes and sediments, Dowdeswell, J.A. and J.D. Scourse (eds.), Geological Society,
London (Geological Society Special Publ. No 53), 235-251.
Cai, D., F.C. Tan and J.M. Edmond (1988) Sources and transport of particulate organic carbon in the Amazon
ri ver and estuary. Estuarine, Coastal and Shelf Science, 26, 1-14.
Cauwet, G. and F.T. Mackenzie (1993) Carbon inputs and distribution in estuaries of turbid rivers: the Yang Tze
and Yellow rivers (China). Mar. Chern., 43, 235-246.
Cauwet, G. and 1.S. Sidorov (1996) The biogeochemistry of Lena River: organic carbon and nutrient
distribution. Mar. Chern., 53, 211-227.
Degens, E.T., S. Kempe and J.E. Ritchey (1991) Biogeochemistry of major world rivers. Wiley, New York
(SCOPE 42), 356pp.
Dethleff, D., D. Niirnberg, E. Reimnitz, M. Saarso and Y.P. Savchenko (1993) East Siberian Arctic Region
Expedition '92: The Laptey Sea - Its significance for Arctic sea-ice formation and transpolar sediment flux.
Reports on Polar Research, 120, 1-44.
Eicken, R., E. Reimnitz, V. Alexandrov, T. Martin, R. Kassens and T. Viehoff (1996) Sea-ice processes in the
Laptev Sea and their importance for sediment transport. Continental Shelf Res., 17,205-233.