[Energy Flow in Arctic Aquatic Ecosystems] Page: 3 of 19
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the same species of birds and fishes present in tundra lakes --
oldsquaws, phalaropes, loon, ciscoes, whitefishes and arctic char --
were also utilizing the food resources of the nearshore marine
environment. Some species, such as the oldsquaws (C7z.nruxi 7,emali2)
may nest on the tundra and feed on freshwater prey organisms orI may
remain on the marine lagoons (males and nonbreeders) for all or part of
the summer. The anadromous fishes migrate into the marine water to feed
in summer and return to freshwater to spawn and overwinter. In the
process of sorting out the energy supplies and trophic interdependencies
of the larger apical organisms while in the lagoons, we sought to
establish the magnitudes of energy (carbon) inputs arising from (1)
primary production, (2) fluvial inputs of terrestrial carbon by the
rivers and streams, and (3) shoreline erosion of the Holocene peat soils
(Figure 1). Through various techniques it was determined that within 10
km of shore, over 50 percent of the carbon supply was derived rrom land
(Schell , 1980) and that the major fraction of the allochthonous carbon
RESPIRATION
Terrestrial Aquatic
Primary production Primary production
14.3 0.3
12 0.3
2.1 0 z
0.4 0.6
PEAT Fluvial transport
Coastal erosion
Lakeshore erosion
Figure 1. Bob model of carbon flow fo the North Slope (200 x
10 km ). Fluxes are in 10 kgC'yr . (From Schell
and Ziemann, 1983)-3-
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Schell, D. M. [Energy Flow in Arctic Aquatic Ecosystems], report, December 31, 1985; Fairbanks, Alaska. (https://digital.library.unt.edu/ark:/67531/metadc1310787/m1/3/?rotate=90: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.