Functional diversity of soil microorganisms in Casuarina equisetifolia woodlands of different stand ages in Hainan Island

Sustainable livestock production generates benefits for the environment, such as water capture, increased biodiversity and carbon dioxide capture. To measure these factors in a tropical setting, in 2007 we took three samples of a milk production system in Turrialba, Cartago, Costa Rica, in areas with permanent African Star grass cover (under grazing) and a secondary forest with 15 years of regeneration. We estimated carbon content in the microbial biomass, microbial activity (breathing technique), carbon usage profile (BIOLOG ECOPLATES®) and functional diversity of microorganisms (Shannon index). Biomass carbon in the pasture was 3,3 times higher than in the forest, but microbial activity was similar. Carbon use rate ranged from 22,22 to 85,19% in the pasture (higher in the forest: 29,63 to 92,59%). In both areas growth correlated with incubation time, but the forest had more biodiversity. Pasture areas are favored by carbon deposition to the rhizosphere, while the variety of vegetation in the forest allows greater functional diversity in the use of carbon substrates.

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The impact of tall fescue (Festuca arundinacea) endophyte (Neotyphodium spp) on non target soil microorganisms

New Zealand Plant Protection ◽

10.30843/nzpp.2004.57.6931 ◽

2004 ◽

Vol 57 ◽

pp. 329-336 ◽

Cited By ~ 2

Author(s):

S. Sayer ◽

G. Burch ◽

S.U. Sarathchandra

Keyword(s):

Microbial Biomass ◽

Functional Diversity ◽

Tall Fescue ◽

Festuca Arundinacea ◽

Soil Microorganisms ◽

Soil Microbial Biomass ◽

Rhizosphere Soil ◽

Microbial Biomass C ◽

Soil Microbial ◽

The Impact

The impact of two strains of the tall fescue (Festuca arundinacea) endophyte (Neotyphodium spp) (E) on the rhizoplane and rhizosphere soil microorganisms was examined at two sites (Lincoln endophytefree (E) and the endophyte strain AR501; and Aorangi E AR501 and a second strain AR542) Rhizosphere and rhizoplane populations of bacteria and fungi functional diversity root fungi and soil microbial biomass carbon and nitrogen were measured Most characteristics measured showed no differences between E and E samples indicating that the presence of endophytes had no impact on nontarget soil microorganisms At Aorangi soil microbial biomass C and N were significantly greater (Plt;005) in AR542 than E1 and AR501 soils Culturable fungal populations from both the rhizoplane and rhizosphere soil were significantly greater (Plt;005) in the E than the AR501 samples at Lincoln but not at Aorangi There were no differences in the functional diversity of rhizoplane microorganisms due to endophyte

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Authentic soil microbial communities in primeval forest ecosystems of Uzhanskyi National Nature Park

Fundamental and Applied Soil Science ◽

10.15421/041715 ◽

2017 ◽

Vol 18 (3-4) ◽

pp. 51-56

Author(s):

L. Yu. Symochko ◽

A. I. Fizer

Keyword(s):

Microbial Communities ◽

Functional Diversity ◽

Soil Microorganisms ◽

Soil Microbial Communities ◽

Ecological Factors ◽

Human Welfare ◽

Soil Microbiota ◽

High Productivity ◽

Soil Microbial ◽

Biomass Influence

The article presents the modern aspects of studying and evaluating the biodiversity of soil microbiocenoses in the Carpathian region. The purpose of the work was to investigate the soil microbiota of virgin ecosystems, namely the structure of microbial communities, the number of major ecological trophic groups; to analyze the successional processes occurring in the soil microbiocenosis due to the influence of endogenous and exogenous factors. Anthropogenic impact: soil compaction, sanitary felling has led to changes in the groups of soil microorganisms, reduced their numbers and functional diversity. The primeval forests as etalon ecosystems better combine above resistance and stability with high productivity of biomass. Influence of ecological factors caused changes in the community of soil organisms, varied their abundance and functional diversity. Soil microorganisms have been largely ignored by conservation efforts. However, their role in biogeochemical processes, their diversity and abundance, and their potential as repositories of valuable genetic information and metabolic products make them as important as animals and plants to the biosphere and human welfare. Study of authentic soil microbiota creates the necessary prerequisites for the conservation of microbial diversity and forming the base of the eco-microbiological monitoring.

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