Nutrients as a link between ionic concentration/composition and diatom distributions in saline lakes

Diatom profiles in closed-basin lake sediments are commonly used to reconstruct climate change based on the observed correlations between salinity (ionic concentration) and modern diatom assemblages. Diatom assemblages are strongly correlated not only with salinity but also anion composition, with c...

Full description

Saved in:
Bibliographic Details
Published in:Journal of paleolimnology 2000-04, Vol.23 (4), p.449-453
Main Authors: Saros, Je, Fritz, Sc
Format: Article
Language:English
Subjects:
Climate change
Lake sediments
Nutrient availability
Nutrient dynamics
Nutrient requirements
Plankton
Saline water
Salinity
Salt lakes
Species composition
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Diatom profiles in closed-basin lake sediments are commonly used to reconstruct climate change based on the observed correlations between salinity (ionic concentration) and modern diatom assemblages. Diatom assemblages are strongly correlated not only with salinity but also anion composition, with certain taxa characteristic of carbonate systems and others sulfate-dominated waters. Although strong correlations exist, the actual mechanisms behind these correlations are unknown. Here we briefly review the influence of salinity and ionic composition on nutrient dynamics in saline lakes and suggest that these interactions may drive shifts in diatom species composition along gradients of ionic concentration/composition. We discuss the influence of salinity and anion composition on nutrient availability, as well as on nutrient requirements and uptake by diatoms.[PUBLICATION ABSTRACT]
ISSN:0921-2728
1573-0417
DOI:10.1023/A:1008186431492