Details
| Original language | English |
|---|---|
| Pages (from-to) | 219-230 |
| Number of pages | 12 |
| Journal | Microbial ecology |
| Volume | 70 |
| Issue number | 1 |
| Publication status | Published - 28 Jul 2015 |
| Externally published | Yes |
Abstract
Cyanobacteria occur worldwide but play an important role in the formation and primary activity of biological soil crusts (BSCs) in arid and semi-arid ecosystems. The cyanobacterial diversity in BSCs of the northwest Negev desert of Israel was surveyed at three fixed sampling stations situated along a precipitation gradient in the years 2010 to 2012. The three stations also are characterized by marked differences in soil features such as soil carbon, nitrogen, or electrical conductivity. The cyanobacterial biodiversity was analyzed by sequencing inserts of clone libraries harboring partial 16S rRNA gene sequences obtained with cyanobacteria-specific primers. Filamentous, non-diazotrophic strains (subsection III), particularly Microcoleus-like, dominated the cyanobacterial community (30 % proportion) in all years. Specific cyanobacterial groups showed increased (e.g., Chroococcidiopsis, Leptolyngbya, and Nostoc strains) or decreased (e.g., unicellular strains belonging to the subsection I and Scytonema strains) abundances with declining water availability at the most arid, southern station, whereas many cyanobacterial strains were frequently found in the soils of all three stations. The cyanobacterial diversity at the three sampling stations appears dependent on the available precipitation, whereas the differences in soil chemistry were of lower importance.
Keywords
- 16S rRNA gene fragments, Biological soil crusts, Cluster analysis, Filamentous strains, Negev desert, Nitrogen-fixing strains, Soil characteristics
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Ecology, Evolution, Behavior and Systematics
- Environmental Science(all)
- Ecology
- Agricultural and Biological Sciences(all)
- Soil Science
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In: Microbial ecology, Vol. 70, No. 1, 28.07.2015, p. 219-230.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Cyanobacterial Diversity in Biological Soil Crusts along a Precipitation Gradient, Northwest Negev Desert, Israel
AU - Hagemann, Martin
AU - Henneberg, Manja
AU - Felde, Vincent J.M.N.L.
AU - Drahorad, Sylvie L.
AU - Berkowicz, Simon M.
AU - Felix-Henningsen, Peter
AU - Kaplan, Aaron
N1 - Publisher Copyright: © 2014, Springer Science+Business Media New York.
PY - 2015/7/28
Y1 - 2015/7/28
N2 - Cyanobacteria occur worldwide but play an important role in the formation and primary activity of biological soil crusts (BSCs) in arid and semi-arid ecosystems. The cyanobacterial diversity in BSCs of the northwest Negev desert of Israel was surveyed at three fixed sampling stations situated along a precipitation gradient in the years 2010 to 2012. The three stations also are characterized by marked differences in soil features such as soil carbon, nitrogen, or electrical conductivity. The cyanobacterial biodiversity was analyzed by sequencing inserts of clone libraries harboring partial 16S rRNA gene sequences obtained with cyanobacteria-specific primers. Filamentous, non-diazotrophic strains (subsection III), particularly Microcoleus-like, dominated the cyanobacterial community (30 % proportion) in all years. Specific cyanobacterial groups showed increased (e.g., Chroococcidiopsis, Leptolyngbya, and Nostoc strains) or decreased (e.g., unicellular strains belonging to the subsection I and Scytonema strains) abundances with declining water availability at the most arid, southern station, whereas many cyanobacterial strains were frequently found in the soils of all three stations. The cyanobacterial diversity at the three sampling stations appears dependent on the available precipitation, whereas the differences in soil chemistry were of lower importance.
AB - Cyanobacteria occur worldwide but play an important role in the formation and primary activity of biological soil crusts (BSCs) in arid and semi-arid ecosystems. The cyanobacterial diversity in BSCs of the northwest Negev desert of Israel was surveyed at three fixed sampling stations situated along a precipitation gradient in the years 2010 to 2012. The three stations also are characterized by marked differences in soil features such as soil carbon, nitrogen, or electrical conductivity. The cyanobacterial biodiversity was analyzed by sequencing inserts of clone libraries harboring partial 16S rRNA gene sequences obtained with cyanobacteria-specific primers. Filamentous, non-diazotrophic strains (subsection III), particularly Microcoleus-like, dominated the cyanobacterial community (30 % proportion) in all years. Specific cyanobacterial groups showed increased (e.g., Chroococcidiopsis, Leptolyngbya, and Nostoc strains) or decreased (e.g., unicellular strains belonging to the subsection I and Scytonema strains) abundances with declining water availability at the most arid, southern station, whereas many cyanobacterial strains were frequently found in the soils of all three stations. The cyanobacterial diversity at the three sampling stations appears dependent on the available precipitation, whereas the differences in soil chemistry were of lower importance.
KW - 16S rRNA gene fragments
KW - Biological soil crusts
KW - Cluster analysis
KW - Filamentous strains
KW - Negev desert
KW - Nitrogen-fixing strains
KW - Soil characteristics
UR - http://www.scopus.com/inward/record.url?scp=84938196691&partnerID=8YFLogxK
U2 - 10.1007/s00248-014-0533-z
DO - 10.1007/s00248-014-0533-z
M3 - Article
C2 - 25408227
AN - SCOPUS:84938196691
VL - 70
SP - 219
EP - 230
JO - Microbial ecology
JF - Microbial ecology
SN - 0095-3628
IS - 1
ER -