scholarly journals Stable isotope switching (SIS): a new stable isotope probing (SIP) approach to determine carbon flow in the soil food web and dynamics in organic matter pools

2012 ◽  
Vol 26 (8) ◽  
pp. 997-1004 ◽  
Author(s):  
P. J. Maxfield ◽  
N. Dildar ◽  
E. R. C. Hornibrook ◽  
A. W. Stott ◽  
R. P. Evershed
Keyword(s):  
Organic Matter ◽  
Stable Isotope ◽  
Food Web ◽  
Stable Isotope Probing ◽  
Carbon Flow ◽  
Soil Food Web

Tracing sewage-derived organic matter into a shallow groundwater food web using stable isotope and fluorescence signatures

2011 ◽  
Vol 62 (2) ◽  
pp. 119 ◽  
Author(s):  
Adam Hartland ◽  
Graham D. Fenwick ◽  
Sarah J. Bury
Keyword(s):  
Organic Matter ◽  
Stable Isotope ◽  
Food Web ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Shallow Groundwater ◽  
Organic Pollution ◽  
Food Sources ◽  
Δ13c And Δ15n

Little is known about the feeding modes of groundwater invertebrates (stygofauna). Incorporation of sewage-derived organic matter (OM) into a shallow groundwater food web was studied using fluorescence and stable isotope signatures (δ13C and δ15N). Organic pollution was hypothesised to limit sensitive species’ abundances along the contamination gradient and isotope signatures of stygofauna consuming sewage-derived OM were expected to be enriched in δ15N. Stygofauna communities near a sewage treatment plant in New Zealand were sampled over 4 months and microbial biofilms were incubated in situ on native gravel for 1 month. As anticipated, OM stress-subsidy gradients altered stygofauna composition: the biomass of oligochaetes and Paraleptamphopus amphipods increased in OM-enriched groundwater (higher dissolved organic carbon (DOC) and tryptophan-like fluorescence), whereas other, probably less-tolerant taxa (e.g. ostracods, Dytiscidae) were absent. Isotopic signatures for stygofauna from polluted groundwater were consistent with assimilation of isotopically enriched sewage-N (δ15N values of 7–16‰), but highly depleted in δ13C relative to sewage. Negative 13C discriminations probably occur in Paraleptamphopus amphipods, and may also occur in oligochaetes and Dytiscidae, a finding with implications for the application of δ13C for determining food sources in groundwaters. Organic pollution of groundwaters may have serious repercussions for stygofauna community structure with potentially irreversible consequences.

scholarly journals RNA-stable isotope probing: from carbon flow within key microbiota to targeted transcriptomes

2016 ◽  
Vol 41 ◽  
pp. 83-89 ◽  
Author(s):  
Tillmann Lueders ◽  
Marc G Dumont ◽  
Lauren Bradford ◽  
Mike Manefield
Keyword(s):  
Stable Isotope ◽  
Stable Isotope Probing ◽  
Carbon Flow

Exploring carbon flow through the root channel in a temperate forest soil food web

2014 ◽  
Vol 76 ◽  
pp. 45-52 ◽  
Author(s):  
Kadeem J. Gilbert ◽  
Timothy J. Fahey ◽  
John C. Maerz ◽  
Ruth E. Sherman ◽  
Patrick Bohlen ◽  
...  
Keyword(s):  
Food Web ◽  
Forest Soil ◽  
Temperate Forest ◽  
Carbon Flow ◽  
Soil Food Web ◽  
Flow Through ◽  
Root Channel

Stable Isotope Probing and Raman Spectroscopy for Monitoring Carbon Flow in a Food Chain and Revealing Metabolic Pathway

2013 ◽  
Vol 85 (3) ◽  
pp. 1642-1649 ◽  
Author(s):  
Mengqiu Li ◽  
Wei E. Huang ◽  
Christopher M. Gibson ◽  
Patrick W. Fowler ◽  
Alexandre Jousset
Keyword(s):  
Raman Spectroscopy ◽  
Stable Isotope ◽  
Food Chain ◽  
Metabolic Pathway ◽  
Stable Isotope Probing ◽  
Carbon Flow

scholarly journals Stable Isotope Probing Identifies Bacterioplankton Lineages Capable of Utilizing Dissolved Organic Matter Across a Range of Bioavailability

2020 ◽  
Vol 11 ◽  
Author(s):  
Shuting Liu ◽  
Nicholas Baetge ◽  
Jacqueline Comstock ◽  
Keri Opalk ◽  
Rachel Parsons ◽  
...  
Keyword(s):  
Organic Matter ◽  
Stable Isotope ◽  
Dissolved Organic Matter ◽  
Stable Isotope Probing

scholarly journals Organic manure induced soil food web of microbes and nematodes drive soil organic matter under jackfruit planting

2021 ◽  
Vol 166 ◽  
pp. 103994
Author(s):  
Lanxi Su ◽  
Tingyu Bai ◽  
Xiaowei Qin ◽  
Huan Yu ◽  
Gang Wu ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Food Web ◽  
Organic Manure ◽  
Soil Food Web

Romul_Hum—A model of soil organic matter formation coupling with soil biota activity. II. Parameterisation of the soil food web biota activity

2017 ◽  
Vol 345 ◽  
pp. 125-139 ◽  
Author(s):  
Oleg Chertov ◽  
Alexander Komarov ◽  
Cindy Shaw ◽  
Sergey Bykhovets ◽  
Pavel Frolov ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Food Web ◽  
Soil Biota ◽  
Soil Food Web ◽  
Soil Organic Matter Formation
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