Results 31 to 40 of about 2,031,622 (237)

Urea Is Both a Carbon and Nitrogen Source for Microcystis aeruginosa: Tracking 13C Incorporation at Bloom pH Conditions

open access: yesFrontiers in Microbiology, 2019
The use of urea as a nitrogenous fertilizer has increased over the past two decades, with urea itself being readily detected at high concentrations in many lakes. Urea has been linked to cyanobacterial blooms as it is a readily assimilated nitrogen (N) -
Lauren E. Krausfeldt   +5 more
doaj   +1 more source

Bias of ostracod stable isotope data caused by drying of sieve residues from water [PDF]

open access: yes, 2007
Stable isotope analysis of ostracod shells is used routinely for palaeoenvironmental studies of ostracod-bearing records. Sample treatment usually involves the disaggregation of sediments and sieving; before the sieving residues were washed with water ...
Börner, Anko   +2 more
core   +1 more source

Microorganisms associated with Sporobolus anglicus, an invasive dimethylsulfoniopropionate producing salt marsh plant, are an unrecognized sink for dimethylsulfide

open access: yesFrontiers in Microbiology, 2022
BackgroundSaltmarshes are hotspots of organosulfur compound cycling due to production of dimethylsulfoniopropionate (DMSP) by benthic microorganisms, macroalgae, and saltmarsh vegetation.
Eileen Kröber   +3 more
doaj   +1 more source

Stable isotope analysis provides new information on winter habitat use of declining avian migrants that is relevant to their conservation [PDF]

open access: yes, 2012
Winter habitat use and the magnitude of migratory connectivity are important parameters when assessing drivers of the marked declines in avian migrants. Such information is unavailable for most species.
Newton, J.   +11 more
core   +2 more sources

Escher-Trace: a web application for pathway-based visualization of stable isotope tracing data

open access: yesBMC Bioinformatics, 2020
Background Stable isotope tracing has become an invaluable tool for probing the metabolism of biological systems. However, data analysis and visualization from metabolic tracing studies often involve multiple software packages and lack pathway ...
Avi Kumar   +3 more
doaj   +1 more source

Degradation changes stable carbon isotope depth profiles in palsa peatlands [PDF]

open access: yes, 2014
Palsa peatlands are a significant carbon pool in the global carbon cycle and are projected to change by global warming due to accelerated permafrost thaw. Our aim was to use stable carbon isotopes as indicators of palsa degradation.
Leifeld, J.   +5 more
core   +2 more sources

Trophic structure in a seabird host-parasite food web: insights from stable isotope analyses [PDF]

open access: yes, 2010
Ecological studies on food webs rarely include parasites, partly due to the complexity and dimensionality of host-parasite interaction networks. Multiple co-occurring parasites can show different feeding strategies and thus lead to complex and cryptic ...
Gómez-Díaz Elena   +3 more
core   +1 more source

Soil Properties Control Microbial Carbon Assimilation and Its Mean Residence Time

open access: yesFrontiers in Environmental Science, 2020
Microbial assimilation and stabilization of soil organic carbon (SOC) is an important process in global carbon cycling. For an improved understanding of climate-induced changes in ecosystem C dynamics, it is important to know the group-specific turnover ...
Rana Shahbaz Ali   +2 more
doaj   +1 more source

Bacterial metabolism of methylated amines and identification of novel methylotrophs in Movile Cave [PDF]

open access: yes, 2015
Movile Cave, Romania, is an unusual underground ecosystem that has been sealed off from the outside world for several million years and is sustained by non-phototrophic carbon fixation. Methane and sulfur-oxidising bacteria are the main primary producers,
Alexandra M Hillebrand-Voiculescu   +20 more
core   +1 more source

Carbon stable isotope analysis of cereal remains as a way to reconstruct water availability: preliminary results [PDF]

open access: yes, 2011
Reconstructing past water availability, both as rainfall and irrigation, is important to answer questions about the way society reacts to climate and its changes and the role of irrigation in the development of social complexity.
Jenkins, Emma L.   +8 more
core   +1 more source

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