Pelagic nitrogen cycle in an Arctic lake
Thesis/Dissertation
·
OSTI ID:5348989
A mass balance for nitrogen was developed for the water column of Toolik Lake and the isotope tracers /sup 15/N and /sup 14/C were used to examine the phytoplankton ecology with respect to dissolved inorganic nitrogen (ammonium and nitrate). The nutrient budget showed an oligotrophic ecosystem with important flux terms few and small in magnitude. Nitrogen input was primarily from inflowing rivers and was dominated by the dissolved organic fraction. Ammonium release from sediment provided the only other major source of nitrogen to the lake water. Toolik acted as a nitrogen sink, trapping 18% of the annual input. Retention was almost exclusively (98%) as dissolved organic nitrogen. Tracer experiments suggested chronic nitrogen deficiency in the phytoplankton, but indigenous populations were well-adapted for utilizing characteristically low levels of nutrient.
- Research Organization:
- Alaska Univ., Fairbanks (USA)
- OSTI ID:
- 5348989
- Country of Publication:
- United States
- Language:
- English
Similar Records
The LAKE model input dataset for three Arctic lakes
Biological cycling of nitrogen in a Rocky Mountain alpine lake, with emphasis on the physiological and ecological effects of acidification
Water and nutrient budgets for Center Hill Lake
Dataset
·
Tue Jan 05 23:00:00 EST 2021
·
OSTI ID:1808368
Biological cycling of nitrogen in a Rocky Mountain alpine lake, with emphasis on the physiological and ecological effects of acidification
Thesis/Dissertation
·
Sat Dec 31 23:00:00 EST 1988
·
OSTI ID:5672665
Water and nutrient budgets for Center Hill Lake
Journal Article
·
Thu Dec 31 23:00:00 EST 1992
· Journal of the Tennessee Academy of Science; (United States)
·
OSTI ID:6335400
Related Subjects
520101 -- Environment
Aquatic-- Basic Studies-- Radiometric Techniques-- (-1989)
520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AMMONIUM COMPOUNDS
AQUATIC ORGANISMS
ARCTIC REGIONS
BIOLOGICAL ADAPTATION
CARBON 14 COMPOUNDS
ISOTOPE APPLICATIONS
ISOTOPES
LABELLED COMPOUNDS
LAKES
LIGHT NUCLEI
NITRATES
NITROGEN 15
NITROGEN COMPOUNDS
NITROGEN CYCLE
NITROGEN ISOTOPES
NUCLEI
NUTRIENTS
ODD-EVEN NUCLEI
OXYGEN COMPOUNDS
PHYTOPLANKTON
PLANKTON
POLAR REGIONS
SINKS
STABLE ISOTOPES
SURFACE WATERS
TRACER TECHNIQUES
Aquatic-- Basic Studies-- Radiometric Techniques-- (-1989)
520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AMMONIUM COMPOUNDS
AQUATIC ORGANISMS
ARCTIC REGIONS
BIOLOGICAL ADAPTATION
CARBON 14 COMPOUNDS
ISOTOPE APPLICATIONS
ISOTOPES
LABELLED COMPOUNDS
LAKES
LIGHT NUCLEI
NITRATES
NITROGEN 15
NITROGEN COMPOUNDS
NITROGEN CYCLE
NITROGEN ISOTOPES
NUCLEI
NUTRIENTS
ODD-EVEN NUCLEI
OXYGEN COMPOUNDS
PHYTOPLANKTON
PLANKTON
POLAR REGIONS
SINKS
STABLE ISOTOPES
SURFACE WATERS
TRACER TECHNIQUES