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Factors regulating recruitment from the sediment to the water column in the bloom-forming cyanobacterium Gloeotrichia echinulata

Karlsson-Elfgren, I; Rengefors, Karin LU and Gustafsson, Susanne LU (2004) In Freshwater Biology 49(3). p.265-273
Abstract
1. The influence of light, temperature, sediment mixing and sediment origin (water depth) on the recruitment of the cyanobacterium Gloeotrichia echinulata was examined in the laboratory. 2. Light and temperature were the most important factors initiating germination in G. echinulata. 3. The extent of germination (recruited biovolume) was mainly regulated by temperature and sediment mixing. Furthermore, sediment mixing significantly enhanced the frequency of observed heterocysts and colonies. 4. Despite the fact that the deep and shallow sediments contained a similar number of akinete colonies, the highest recruitment occurred from shallow sediments, indicating that akinetes from shallow sediments have a higher viability than those from... (More)
1. The influence of light, temperature, sediment mixing and sediment origin (water depth) on the recruitment of the cyanobacterium Gloeotrichia echinulata was examined in the laboratory. 2. Light and temperature were the most important factors initiating germination in G. echinulata. 3. The extent of germination (recruited biovolume) was mainly regulated by temperature and sediment mixing. Furthermore, sediment mixing significantly enhanced the frequency of observed heterocysts and colonies. 4. Despite the fact that the deep and shallow sediments contained a similar number of akinete colonies, the highest recruitment occurred from shallow sediments, indicating that akinetes from shallow sediments have a higher viability than those from deeper parts of the lake. 5. Our results support the hypothesis that shallow sediments are more important than profundal sediments for the recruitment of G. echinulata to the pelagic zone. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Freshwater Biology
volume
49
issue
3
pages
265 - 273
publisher
Wiley-Blackwell
external identifiers
  • wos:000188989600004
  • scopus:1442338606
ISSN
0046-5070
DOI
10.1111/j.1365-2427.2004.01182.x
language
English
LU publication?
yes
id
7088c648-df4d-419a-b442-62be6557caf5 (old id 136686)
date added to LUP
2007-06-28 14:05:53
date last changed
2017-12-10 04:33:10
@article{7088c648-df4d-419a-b442-62be6557caf5,
  abstract     = {1. The influence of light, temperature, sediment mixing and sediment origin (water depth) on the recruitment of the cyanobacterium Gloeotrichia echinulata was examined in the laboratory. 2. Light and temperature were the most important factors initiating germination in G. echinulata. 3. The extent of germination (recruited biovolume) was mainly regulated by temperature and sediment mixing. Furthermore, sediment mixing significantly enhanced the frequency of observed heterocysts and colonies. 4. Despite the fact that the deep and shallow sediments contained a similar number of akinete colonies, the highest recruitment occurred from shallow sediments, indicating that akinetes from shallow sediments have a higher viability than those from deeper parts of the lake. 5. Our results support the hypothesis that shallow sediments are more important than profundal sediments for the recruitment of G. echinulata to the pelagic zone.},
  author       = {Karlsson-Elfgren, I and Rengefors, Karin and Gustafsson, Susanne},
  issn         = {0046-5070},
  language     = {eng},
  number       = {3},
  pages        = {265--273},
  publisher    = {Wiley-Blackwell},
  series       = {Freshwater Biology},
  title        = {Factors regulating recruitment from the sediment to the water column in the bloom-forming cyanobacterium Gloeotrichia echinulata},
  url          = {http://dx.doi.org/10.1111/j.1365-2427.2004.01182.x},
  volume       = {49},
  year         = {2004},
}