Journal
SOIL BIOLOGY & BIOCHEMISTRY
Volume 154, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.soilbio.2020.108127
Keywords
Succession; Cyanobacteria; Nostocales; Pseudanabaenales; Phosphorus limitation; Deglaciation; Glacial forefield
Categories
Funding
- Pacific Northwest National Laboratory (PNNL)
- National Science Foundation of the USA [DEB-0922267]
- DOE [DE-AC06-76RLO 1830]
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The study revealed common patterns in cyanobacterial community composition in early soils, highlighting the importance of cyanobacteria in ecosystem development at glacier forefields. Furthermore, a phosphorus addition experiment suggests phosphorus limitation as a mechanism restricting the presence of Nostocales in these emerging landscapes.
Cyanobacteria are integral to soil development in the earliest stages of primary succession by fixing carbon (C) and nitrogen (N) essential for organismal growth. In this study, we examined soil cyanobacterial communities at the earliest stage of succession (<5 years) at two disparate glacial forefields to reveal cyanobacterial patterns central to ecosystem development. Despite vast differences in climate and the relative dominance of hetemtrophic versus autotrophic bacteria in these forefields, we found common patterns in cyanobacterial community composition in early soils. This work adds to limited research suggesting the importance of non-heterocytous filamentous cyanobacteria in initial soil colonization and development of primary succession of glacier forefields. Further, a phosphorus (P) addition experiment suggests P-limitation as a mechanism underlying the restricted presence of ecologically important, putatively N-fixing, Nostocales in these emerging landscapes.
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