caveat regarding diatom-inferred nitrogen concentrations in oligotrophic lakes

Atmospheric deposition of reactive nitrogen (Nr) has enriched oligotrophic lakes with nitrogen (N) in many regions of the world and elicited dramatic changes in diatom community structure. The lakewater concentrations of nitrate that cause these community changes remain unclear, raising interest in...

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Bibliographic Details
Published in:Journal of paleolimnology 2012-02, Vol.47 (2), p.277-291
Main Authors: Arnett, Heather A, Saros, Jasmine E, Alisa Mast, M
Format: Article
Language:English
Subjects:
Algae
Bacillariophyceae
Climate Change
Community structure
data collection
Earth and Environmental Science
Earth Sciences
environmental factors
Freshwater
Freshwater & Marine Ecology
Geology
Lakes
model validation
Mountains
Nitrates
Nitrogen
nitrogen content
Nitrogen enrichment
Oligotrophic lakes
Ordination
Original Paper
Paleolimnology
Paleontology
phosphorus
Physical Geography
physiology
Sediment samplers
Sedimentology
sediments
Water temperature
Wet deposition
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Summary:Atmospheric deposition of reactive nitrogen (Nr) has enriched oligotrophic lakes with nitrogen (N) in many regions of the world and elicited dramatic changes in diatom community structure. The lakewater concentrations of nitrate that cause these community changes remain unclear, raising interest in the development of diatom-based transfer functions to infer nitrate. We developed a diatom calibration set using surface sediment samples from 46 high-elevation lakes across the Rocky Mountains of the western US, a region spanning an N deposition gradient from very low to moderate levels (
ISSN:0921-2728
1573-0417
DOI:10.1007/s10933-011-9576-z