نتایج جستجو برای: bacterial communities

تعداد نتایج: 327935  

2015
Luis E. Castañeda Karina Godoy Marlene Manzano Pablo A. Marquet Olga Barbosa

Natural ecosystems provide services to agriculture such as pest control, soil nutrients, and key microbial components. These services and others in turn provide essential elements that fuel biomass productivity. Responsible agricultural management and conservation of natural habitats can enhance these ecosystem services. Vineyards are currently driving land-use changes in many Mediterranean eco...

2014
Sonia Ciccazzo Alfonso Esposito Eleonora Rolli Stefan Zerbe Daniele Daffonchio Lorenzo Brusetti

The rhizosphere effect on bacterial communities associated with three floristic communities (RW, FI, and M sites) which differed for the developmental stages was studied in a high-altitude alpine ecosystem. RW site was an early developmental stage, FI was an intermediate stage, M was a later more matured stage. The N and C contents in the soils confirmed a different developmental stage with a k...

2008
Stacie A. Kageyama Nancy Ritchie Posavatz Kirk E. Waterstripe Sarah J. Jones Peter J. Bottomley Kermit Cromack David D. Myrold

Meadows are natural dynamic features of forested mountain landscapes of the Pacific Northwest. Proportions of meadows and forests change with environmental conditions and disturbance history. We investigated the belowground microbial communities associated with these two vegetation types and how they change across the meadow–forest transition at two sites in Oregon. Soils were sampled along rep...

2014
Maria E. Albinsson Andrew P. Negri Susan I. Blackburn Christopher J. S. Bolch

The paralytic shellfish toxin (PST)-producing dinoflagellate Gymnodinium catenatum grows in association with a complex marine bacterial community that is both essential for growth and can alter culture growth dynamics. Using a bacterial community replacement approach, we examined the intracellular PST content, production rate, and profile of G. catenatum cultures grown with bacterial communitie...

2016
Till Röthig Rúben M. Costa Fabia Simona Sebastian Baumgarten Ana F. Torres Anand Radhakrishnan Manuel Aranda Christian R. Voolstra

Citation: Röthig T, Costa RM, Simona F, Baumgarten S, Torres AF, Radhakrishnan A, Aranda M and Voolstra CR (2016) Distinct Bacterial Communities Associated with the Coral Model Aiptasia in Aposymbiotic and Symbiotic States with Symbiodinium. Front. Mar. Sci. 3:234. doi: 10.3389/fmars.2016.00234 Distinct Bacterial Communities Associated with the Coral Model Aiptasia in Aposymbiotic and Symbiotic...

2004
J. I. Prosser Graeme W. Nicol Gordon Webster L. Anne Glover

Grassland management regimens influence the structure of archaeal communities in upland pasture soils, which appear to be dominated by as yet uncultivated non-thermophilic Crenarchaeota. In an attempt to determine which grassland management factors select for particular crenarchaeal community structures, soil microcosm experiments were performed examining the effect of increased pH, application...

2017
Dan Naylor Devin Coleman-Derr

Root-associated bacterial communities play a vital role in maintaining health of the plant host. These communities exist in complex relationships, where composition and abundance of community members is dependent on a number of factors such as local soil chemistry, plant genotype and phenotype, and perturbations in the surrounding abiotic environment. One common perturbation, drought, has been ...

2013
Tania Aires Ester A. Serrão Gary Kendrick Carlos M. Duarte Sophie Arnaud-Haond

Biological invasions rank amongst the most deleterious components of global change inducing alterations from genes to ecosystems. The genetic characteristics of introduced pools of individuals greatly influence the capacity of introduced species to establish and expand. The recently demonstrated heritability of microbial communities associated to individual genotypes of primary producers makes ...

2017
Mercè Berga Yinghua Zha Anna J. Székely Silke Langenheder

Disturbances and environmental change are important factors determining the diversity, composition, and functioning of communities. However, knowledge about how natural bacterial communities are affected by such perturbations is still sparse. We performed a whole ecosystem manipulation experiment with freshwater rock pools where we applied salinity disturbances of different intensities. The aim...

2012
Jose A. Amador Janet A. Atoyan

Although groundwater quality depends on microbial processes in the soil treatment area (STA) of onsite wastewater treatment systems (OWTS), our understanding of the development of these microbial communities is limited. We examined the bacterial communities of sand, sandy loam, and clay STAs at different depths in response to septic tank effluent (STE) addition using mesocosms. Terminal restric...

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