نتایج جستجو برای: soil springs

تعداد نتایج: 188668  

2015
MIN THAN MYO MYINT

Bacteria (12 strains) were isolated from hot springs soil sample located at Yae Nwaye village and Taung Lay Lone village in Southern Shan state, Myanmar. The temperature of these hot springs is 55oC in winter. The isolation was done by direct plating method with 10 fold serial dilution. The amylolytic activities of the isolates were screened by streaking on starch agar and then flooding with Gr...

Journal: :Ecological processes 2021

Abstract Background Few studies have incorporated the evolutionary insights provided by analysis of phylogenetic structure along with community composition to assess effects exotic invasion on freshwater wetlands. Here, we taxonomic and relationships among acid seep springs investigate potential homogenization or resistance communities due an grass. Results Multivariate analyses indicated diffe...

2015
Ricardo Fernandes de SOUSA Eliana Paula Fernandes BRASIL Célio de FIGUEIREDO

The veredas (a type of wetlands) are wet ecosystems usually associated with the presence of hydromorphic soils, which often occur in the vicinity of springs and watercourses of the Cerrado region in Brazil. This study aimed to assess microbiological and biochemical soil properties in wetlands (veredas) located in preserved and disturbed environments (in farming and grazing areas) in the Cerrado...

Journal: :geopersia 2013
feridon ghadimi mahmoud mirzaei mohammad ghomi

in this study multivariate statistical analysis are used to characterize relationships between hydrochemical properties ofthermal and non-thermal springs. four factors for thermal waters and two for non-thermal springs were extracted basedon factor analysis. in thermal springs, the first factor showed high loading on ca, mg, na and k and this factor wasinterpreted as leaching of cations in the ...

Journal: :Journal of environmental quality 2015
Patrick R Nash Kelly A Nelson Peter P Motavalli Manjula Nathan Chris Dudenhoeffer

Installing subsurface tile drain systems in poorly drained claypan soils to improve corn ( L.) yields could potentially increase environmental phosphorus (P) loss through the tile drainage system. The objectives of the study were to quantify the average concentration and loss of ortho-P in tile drain water from a claypan soil and to determine whether managed subsurface drainage (MD) could reduc...

Journal: :FEMS microbiology ecology 2013
Sotirios Vasileiadis Edoardo Puglisi Maria Arena Fabrizio Cappa Johannes A van Veen Pier S Cocconcelli Marco Trevisan

The Po river plain lowland springs represent unique paradigms of managed environments. Their current locations used to be swamps that were drained 6-7 centuries ago, and they have been in constant use ever since. Our aims were to identify the effects of land use on the microbial communities of these soils, look for associated diversity drivers, and assess the applicability of ecology theories w...

Journal: :Journal of environmental quality 2008
Thomas Harter Edward R Atwill Lingling Hou Betsy M Karle Kenneth W Tate

Transport of Cryptosporidium parvum through macroporous soils is poorly understood yet critical for assessing the risk of groundwater contamination. We developed a conceptual model of the physics of flow and transport in packed, tilted, and vegetated soilboxes during and immediately after a simulated rainfall event and applied it to 54 experiments implemented with different soils, slopes, and r...

1998
ROBERT MACLEAN MARK W. OSWOOD JOHN G. IRONS

Understanding interactions between permanently frozen soils and stream chemistry is important in predicting the effects of management, natural disturbance and changing permafrost distribution on stream ecosystems and nutrient budgets in subarctic watersheds. Chemical measurements of groundwater, soil water and stream water were made in two watersheds in the taiga of interior Alaska. One watersh...

Journal: :novelty in biomedicine 0
maryam niyyati department of medical parasitology & mycology, school of medicine, shahid beheshti university of medical sciences, tehran, iran alireza latifi department of medical parasitology & mycology, school of medicine, shahid beheshti university of medical sciences, tehran, iran

background: free-living amoebae have various genera that are found in several environmental niches such as soil, freshwater, dust, seawater and hot springs. most of free-living amoebae are normally harmless to humans. however, some such as acanthamoeba and also naegleria fowleri , balamuthia manderillaris and sappinia are identified as opportunistic and pathogenic amoebae that can cause eye dis...

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