Response of pelagic cyanobacteria to iron additions—enclosure experiments from Lake Erken

In this study, low epilimnetic iron availability during the summer stagnation period was concluded to be a limiting factor for cyanobacterial development in Lake Erken. In three enclosure experiments, different combinations of phosphate, nitrate and ammonium additions were tested both with and witho...

Full description

Saved in:
Bibliographic Details
Published in:Journal of plankton research 2000-06, Vol.22 (6), p.1113-1126
Main Authors: Hyenstrand, Per, Rydin, Emil, Gunnerhed, Malin
Format: Article
Language:English
Subjects:
Ammonium
Ammonium compounds
Animal and plant ecology
Animal, plant and microbial ecology
Biological and medical sciences
Colonies
Enclosures
Fresh water ecosystems
Freshwater
Fundamental and applied biological sciences. Psychology
Gloeotrichia echinulata
Inland waters
Iron
Lakes
Limiting factors
Phosphates
Sweden
Sweden, L. Erken
Synecology
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:In this study, low epilimnetic iron availability during the summer stagnation period was concluded to be a limiting factor for cyanobacterial development in Lake Erken. In three enclosure experiments, different combinations of phosphate, nitrate and ammonium additions were tested both with and without additions of dissolved iron. The addition of iron increased the growth of diazotrophic cyanobacteria significantly compared with enclosures not receiving iron. This was especially evident for the colony-forming cyanobacterium Gloeotrichia echinulata. In one experiment, colonies of G.echinulata disappeared in enclosures not receiving iron, while the abundance of this species increased in those enclosures to which iron was added.
ISSN:0142-7873
1464-3774
1464-3774
DOI:10.1093/plankt/22.6.1113