DOI: 10.1111/gbi.12168
Scopus记录号: 2-s2.0-85027924402
论文题名: Interaction between lithification and resource availability in the microbialites of Río Mesquites, Cuatro Ciénegas, México
作者: Corman J.R. ; Poret-Peterson A.T. ; Uchitel A. ; Elser J.J.
刊名: Geobiology
ISSN: 1472-4677
EISSN: 1472-4669
出版年: 2016
卷: 14, 期: 2 起始页码: 176
结束页码: 189
语种: 英语
Scopus关键词: calcium carbonate
; nitrogen
; phosphorus
; abundance
; accumulation rate
; bioavailability
; calcium carbonate
; growth response
; lithification
; microbial community
; microbialite
; nutrient limitation
; organic carbon
; photoautotrophy
; precipitation (chemistry)
; primary production
; resource availability
; Bacteroidetes
; biomass
; cyanobacterium
; growth, development and aging
; metabolism
; Mexico
; microbiology
; Proteobacteria
; Bacteroidetes
; Biomass
; Calcium Carbonate
; Cyanobacteria
; Environmental Microbiology
; Mexico
; Nitrogen
; Phosphorus
; Proteobacteria
; Coahuila
; Cuatro Cienegas
; Mesquites River
; Mexico [North America]
Scopus学科分类: Earth and Planetary Sciences: General Earth and Planetary Sciences
; Environmental Science: General Environmental Science
; Agricultural and Biological Sciences: Ecology, Evolution, Behavior and Systematic
英文摘要: Lithified microbial structures (microbialites) have been present on Earth for billions of years. Lithification may impose unique constraints on microbes. For instance, when CaCO3 forms, phosphate may be captured via coprecipitation and/or adsorption and potentially rendered unavailable for biological uptake. Therefore, the growth of microbes associated with CaCO3 may be phosphorus-limited. In this study, we compared the effects of resource addition on biogeochemical functions of microbial communities associated with microbialites and photoautotrophic microbial communities not associated with CaCO3 deposition in Río Mesquites, Cuatro Ciénegas, México. We also manipulated rates of CaCO3 deposition in microbialites to determine whether lithification reduces the bioavailability of phosphorus (P). We found that P additions significantly increased rates of gross primary production (F2,13 = 103.9, P < 0.001), net primary production (F2,13 = 129.6, P < 0.0001) and ecosystem respiration (F2,13 = 6.44, P < 0.05) in the microbialites, while P addition had no effect on photoautotrophic production in the non-CaCO3 -associated microbial communities. Growth of the non-CaCO3-associated phototrophs was only marginally stimulated when nitrogen and P were added simultaneously (F1,36 = 3.98, P = 0.053). In the microbialites, resource additions led to some shifts in the abundance of Proteobacteria, Bacteroidetes and Cyanobacteria but mostly had little effect on bacterial community composition. Ca(2+) uptake rates increased significantly with organic carbon additions (F1,13 = 8.02, P < 0.05). Lowering of CaCO3 deposition by decreasing calcium concentrations in the water led to increased microbial biomass accumulation rates in terms of both organic carbon (F4,48 = 5.23, P < 0.01) and P (F6,48 = 13.91, P < 0.001). These results provide strong evidence in support of a role of lithification in controlling P limitation of microbialite communities. © 2015 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85111
Appears in Collections: 影响、适应和脆弱性
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作者单位: School of Life Sciences, Arizona State University, Tempe, AZ, USA; School of Earth and Space Exploration, Arizona State University, Tempe, AZ, USA
Recommended Citation:
Corman J.R.,Poret-Peterson A.T.,Uchitel A.,et al. Interaction between lithification and resource availability in the microbialites of Río Mesquites, Cuatro Ciénegas, México[J]. Geobiology,2016-01-01,14(2)