Fate of N,N-Bis-(2,4,6-Trichlorophenyl)-Urea in a Freshwater Sediment

1990 ◽  
Author(s):  
Scott D. Harvey ◽  
Dennis D. Dauble ◽  
Bruce D. McVeety ◽  
Robert J. Fellows ◽  
Roger M. Beam
Keyword(s):  
Freshwater Sediment

The Influence of Benthic Biota on Copper Speciation and Distribution in Freshwater-Sediment Systems

1981 ◽  
Vol 16 (1) ◽  
pp. 45-58 ◽  
Author(s):  
G. Krantzberg ◽  
P.M. Stokes
Keyword(s):  
Freshwater Sediment ◽  
Benthic Macroinvertebrate ◽  
Macroinvertebrate Communities ◽  
Copper Species ◽  
Copper Speciation ◽  
Physico Chemical ◽  
Macro Benthos

Abstract An investigation was made of the effects exerted by benthic macroinvertebrate communities on copper speciation in sediments from a lake which is becoming acidified. In laboratory microcosms, benthic macroinvertebrate communities stimulated the flux of copper from sediment to water. The presence of the macro-benthos resulted in a redistribution of physico-chemical copper species within the sediment with a transfer from more strongly complexed forms (HC1 extractable) to adsorbed and cation exchangeable forms (MgCl2 extractable). The role of bio-turbation in copper transformations is discussed.

UNDERSTANDING THE ROLE OF MICROBES IN THE FRESHWATER SEDIMENT CRYPTIC SULFUR CYCLE USING METAGENOMICS AND METATRANSCRIPTOMICS

2020 ◽  
Author(s):  
Emily Hyde ◽  
◽  
Cody Sheik ◽  
Sergei Katsev ◽  
Madelyn Petersen ◽  
...  
Keyword(s):  
Sulfur Cycle ◽  
Freshwater Sediment

Chironomus sancticaroli generation test applied to chemical contaminants and freshwater sediment samples

2021 ◽  
Author(s):  
Mayara Caroline Felipe ◽  
Aline Christine Bernegossi ◽  
Bruna Nayara Cardoso-Silva ◽  
Marcelo Marques Dell’Acqua ◽  
Juliano José Corbi
Keyword(s):  
Freshwater Sediment ◽  
Chemical Contaminants ◽  
Sediment Samples ◽  
Generation Test

scholarly journals Microbial sulfide oxidation in the oxic–anoxic transition zone of freshwater sediment: involvement of lithoautotrophic Magnetospirillum strain J10

2009 ◽  
Vol 70 (1) ◽  
pp. 54-65 ◽  
Author(s):  
Jeanine S. Geelhoed ◽  
Dimitry Y. Sorokin ◽  
Eric Epping ◽  
Tatjana P. Tourova ◽  
Horia L. Banciu ◽  
...  
Keyword(s):  
Transition Zone ◽  
Sulfide Oxidation ◽  
Freshwater Sediment

Phyllobacterium Calauticae Sp. Nov. Isolated From a Microaerophilic Veil Transversed by Cable Bacteria in Freshwater Sediment

2021 ◽  
Author(s):  
Jamie J.M. Lustermans ◽  
Jesper Jensen Bjerg ◽  
Andreas Schramm ◽  
Ian P.G. Marshall
Keyword(s):  
Organic Compounds ◽  
Type Strain ◽  
Electron Donors ◽  
Water Phase ◽  
Freshwater Sediment ◽  
Glass Capillary ◽  
Genomic Comparison ◽  
Bacterium Strain ◽  
Suboxic Zone ◽  
Swimming Microorganisms

Abstract Microaerophilic veils of swimming microorganisms form at oxic-anoxic interfaces, most commonly described in sediments where sulfide diffusing out from below meets oxygen diffusing in from the water phase. However, distinctive microaerophilic veils form even when there is a gap between the sulfide and O2 fronts, i.e., a suboxic zone, and suggest that the organisms inhabiting these veils can use electron donors other than sulfide. Suboxic zones are found for example in sediment where cable bacteria spatially separate sulfide and O2 by up to several centimetres. Here we describe the extraction of microorganisms from a microaerophilic veil that formed in cable-bacteria-enriched freshwater sediment using a glass capillary, and the subsequent isolation of a motile, microaerophilic, organoheterotrophic bacterium, strain R2-JLT, unable to oxidize sulfide. Based on phenotypic, phylogenetic, and genomic comparison, we propose strain R2-JLT as a novel Phyllobacterium species, P. calauticae sp. nov.. The type strain is R2-JLT (=LMG 32286T =DSM 112555T). This novel isolate confirms that a wider variety of electron donors, including organic compounds, can fuel the activity of microorganisms in microaerophilic veils.

Response of ammonia-oxidizing archaea to heavy metal contamination in freshwater sediment

2019 ◽  
Vol 77 ◽  
pp. 392-399 ◽  
Author(s):  
Ningning Li ◽  
Yao Chen ◽  
Zhengke Zhang ◽  
Sha Chang ◽  
Dawei Huang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Freshwater Sediment ◽  
Ammonia Oxidizing Archaea

Flavihumibacter profundi sp. nov., isolated from eutrophic freshwater sediment

2018 ◽  
Vol 56 (7) ◽  
pp. 467-471 ◽  
Author(s):  
Ting-Ting Ren ◽  
Chun-Zhi Jin ◽  
Feng-Jie Jin ◽  
Taihua Li ◽  
Chang-Jin Kim ◽  
...  
Keyword(s):  
Freshwater Sediment
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