Energy flow in an arctic aquatic ecosystem

Natural isotope abundances to trace major pathways of energy flow to consumers in Imnavait Creek and the tundra ecosystem of the R4D watershed with comparative work in the coastal tundra. Our overall goals are to a determine if carbon is accumulating in upland and coastal tundra; determine the role...

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Bibliographic Details
Main Author: Schell, D. M.
Other Authors: United States. Department of Energy.
Format: Report
Language:English
Published: Alaska Univ., Fairbanks, AK (United States). Inst. of Northern Engineering 1988
Subjects:
Online Access:https://doi.org/10.2172/10137219
https://digital.library.unt.edu/ark:/67531/metadc1311287/
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spelling ftunivnotexas:info:ark/67531/metadc1311287 2023-05-15T14:59:21+02:00 Energy flow in an arctic aquatic ecosystem Schell, D. M. United States. Department of Energy. 1988-12-31 9 p. Text https://doi.org/10.2172/10137219 https://digital.library.unt.edu/ark:/67531/metadc1311287/ English eng Alaska Univ., Fairbanks, AK (United States). Inst. of Northern Engineering other: DE93010983 rep-no: DOE/ER/60265--4 grantno: FG06-84ER60265 doi:10.2172/10137219 osti: 10137219 https://digital.library.unt.edu/ark:/67531/metadc1311287/ ark: ark:/67531/metadc1311287 Other Information: PBD: [1988] 540210 Coastal Regions Basic Studies Aquatic Ecosystems Isotope Ratio Carbon 14 Compounds Carbon 13 Alaska Mosses Tundra Deer 540310 54 Environmental Sciences Natural Radioactivity Energy Budgets Arctic Regions Report 1988 ftunivnotexas https://doi.org/10.2172/10137219 2018-12-01T23:08:31Z Natural isotope abundances to trace major pathways of energy flow to consumers in Imnavait Creek and the tundra ecosystem of the R4D watershed with comparative work in the coastal tundra. Our overall goals are to a determine if carbon is accumulating in upland and coastal tundra; determine the role of eroded peat carbon in the aquatic ecosystem; and to determine the distribution of carbon and nitrogen isotopes in the tundra-pond ecosystem to establish the feasibility of using natural differences as tracers. Past work on fishes, birds, and the prey species of insects and aquatic crustaceans has shown that peat carbon is very important in the energy supply supporting the food webs over the course of the year. Obligate freshwater fishes from the coastal lakes and Colville River have been shown to contain up to 60 percent peat carbon at the end of the winter season. In contrast, migratory shorebirds and passerines contained much smaller radiocarbon abundances in summer, indicating a major shift to recent in situ primary production in pond and stream ecosystems in summer months. For the past two years, we have narrowed our focus to the processes supplying carbon to the beaded stream system at MS-117 and have concentrated on determining the transfer and accumulation rates of carbon in the watershed. Report Arctic Tundra Alaska University of North Texas: UNT Digital Library Arctic
institution Open Polar
collection University of North Texas: UNT Digital Library
op_collection_id ftunivnotexas
language English
topic 540210
Coastal Regions
Basic Studies
Aquatic Ecosystems
Isotope Ratio
Carbon 14 Compounds
Carbon 13
Alaska
Mosses
Tundra
Deer 540310
54 Environmental Sciences
Natural Radioactivity
Energy Budgets
Arctic Regions
spellingShingle 540210
Coastal Regions
Basic Studies
Aquatic Ecosystems
Isotope Ratio
Carbon 14 Compounds
Carbon 13
Alaska
Mosses
Tundra
Deer 540310
54 Environmental Sciences
Natural Radioactivity
Energy Budgets
Arctic Regions
Schell, D. M.
Energy flow in an arctic aquatic ecosystem
topic_facet 540210
Coastal Regions
Basic Studies
Aquatic Ecosystems
Isotope Ratio
Carbon 14 Compounds
Carbon 13
Alaska
Mosses
Tundra
Deer 540310
54 Environmental Sciences
Natural Radioactivity
Energy Budgets
Arctic Regions
description Natural isotope abundances to trace major pathways of energy flow to consumers in Imnavait Creek and the tundra ecosystem of the R4D watershed with comparative work in the coastal tundra. Our overall goals are to a determine if carbon is accumulating in upland and coastal tundra; determine the role of eroded peat carbon in the aquatic ecosystem; and to determine the distribution of carbon and nitrogen isotopes in the tundra-pond ecosystem to establish the feasibility of using natural differences as tracers. Past work on fishes, birds, and the prey species of insects and aquatic crustaceans has shown that peat carbon is very important in the energy supply supporting the food webs over the course of the year. Obligate freshwater fishes from the coastal lakes and Colville River have been shown to contain up to 60 percent peat carbon at the end of the winter season. In contrast, migratory shorebirds and passerines contained much smaller radiocarbon abundances in summer, indicating a major shift to recent in situ primary production in pond and stream ecosystems in summer months. For the past two years, we have narrowed our focus to the processes supplying carbon to the beaded stream system at MS-117 and have concentrated on determining the transfer and accumulation rates of carbon in the watershed.
author2 United States. Department of Energy.
format Report
author Schell, D. M.
author_facet Schell, D. M.
author_sort Schell, D. M.
title Energy flow in an arctic aquatic ecosystem
title_short Energy flow in an arctic aquatic ecosystem
title_full Energy flow in an arctic aquatic ecosystem
title_fullStr Energy flow in an arctic aquatic ecosystem
title_full_unstemmed Energy flow in an arctic aquatic ecosystem
title_sort energy flow in an arctic aquatic ecosystem
publisher Alaska Univ., Fairbanks, AK (United States). Inst. of Northern Engineering
publishDate 1988
url https://doi.org/10.2172/10137219
https://digital.library.unt.edu/ark:/67531/metadc1311287/
geographic Arctic
geographic_facet Arctic
genre Arctic
Tundra
Alaska
genre_facet Arctic
Tundra
Alaska
op_source Other Information: PBD: [1988]
op_relation other: DE93010983
rep-no: DOE/ER/60265--4
grantno: FG06-84ER60265
doi:10.2172/10137219
osti: 10137219
https://digital.library.unt.edu/ark:/67531/metadc1311287/
ark: ark:/67531/metadc1311287
op_doi https://doi.org/10.2172/10137219
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