scholarly journals Experimental determination of stable carbon and nitrogen isotope fractionation between mangrove leaves and crabs

2013 ◽  
Vol 490 ◽  
pp. 91-105 ◽  
Author(s):  
CM Herbon ◽  
I Nordhaus
Keyword(s):  
Experimental Determination ◽  
Isotope Fractionation ◽  
Nitrogen Isotope ◽  
Stable Carbon ◽  
Carbon And Nitrogen ◽  
Nitrogen Isotope Fractionation

scholarly journals Mineral identity, natural organic matter, and repeated contaminant exposures do not affect the carbon and nitrogen isotope fractionation of 2,4-dinitroanisole during abiotic reduction

2019 ◽  
Vol 21 (1) ◽  
pp. 51-62 ◽  
Author(s):  
Matthew J. Berens ◽  
Bridget A. Ulrich ◽  
Jennifer H. Strehlau ◽  
Thomas B. Hofstetter ◽  
William A. Arnold
Keyword(s):  
Organic Matter ◽  
Carbon Isotopes ◽  
Natural Organic Matter ◽  
Isotope Fractionation ◽  
Nitrogen Isotope ◽  
Carbon And Nitrogen ◽  
Nitrogen Isotope Fractionation ◽  
Abiotic Reduction ◽  
Hydrolysis Reactions

The fractionation of nitrogen and carbon isotopes during the reduction of 2,4-dinitroanisole is substantially different than that observed for hydrolysis reactions.

Isolation and purification of chlorophylls a and b for the determination of stable carbon and nitrogen isotope compositions

1991 ◽  
Vol 63 (2) ◽  
pp. 130-133 ◽  
Author(s):  
Robert R. Bidigare ◽  
Mahlon C. Kennicutt ◽  
Wendy L. Keeney-Kennicutt ◽  
Stephen A. Macko
Keyword(s):  
Nitrogen Isotope ◽  
Stable Carbon ◽  
Isolation And Purification ◽  
Carbon And Nitrogen ◽  
Chlorophylls A And B

An experimental study on variations in stable carbon and nitrogen isotope fractionation during growth of Mysis mixta and Neomysis integer

1999 ◽  
Vol 56 (11) ◽  
pp. 2203-2210 ◽  
Author(s):  
Elena Gorokhova ◽  
Sture Hansson
Keyword(s):  
Isotopic Composition ◽  
Muscle Tissue ◽  
Isotope Fractionation ◽  
Nitrogen Isotope ◽  
Abdominal Muscle ◽  
Neomysis Integer ◽  
Carbon And Nitrogen ◽  
Mysis Mixta ◽  
Nitrogen Isotope Fractionation ◽  
Isotopic Signal

The trophic isotope fractionation of mysids, in response to a change in the isotopic composition in their diet, was examined in the laboratory. Field-caught Mysis mixta and Neomysis integer had similar δ13C values, ranging between -23.1 and -21.5‰. They also had similar δ15N values, and for both species, this value increased with body size. Experimental starvation did not change the isotopic composition. To test for metabolic fractionation of isotopes, the mysids were fed different diets, newly hatched Artemia and detrital Enteromorpha. The isotopic composition was monitored in abdominal muscle tissue, exoskeleton, and feces over 12 weeks. The δ13C composition in muscle tissue had not reached an isotopic equilibrium with the diet at the end of the experiment, while the exoskeleton came into equilibrium with the food in 2-3 weeks. Muscle was enriched in 15N relatively to the food, +3.6‰ for Artemia and +2.7‰ for Enteromorpha. The isotopic composition in muscle, exuviae, and feces may form a basis for diet reconstruction of mysids. The feces δ13C and δ15N values mirror the diet over the last few hours, exuviae δ13C values represent nutrients metabolized 2-3 weeks ago, and muscle tissue integrates the isotopic signal over a relatively long period.

scholarly journals Carbon and nitrogen isotope fractionation of amino acids in an avian marine predator, the gentoo penguin ( Pygoscelis papua )

2015 ◽  
Vol 5 (6) ◽  
pp. 1278-1290 ◽  
Author(s):  
Kelton W. McMahon ◽  
Michael J. Polito ◽  
Stephanie Abel ◽  
Matthew D. McCarthy ◽  
Simon R. Thorrold
Keyword(s):  
Amino Acids ◽  
Isotope Fractionation ◽  
Nitrogen Isotope ◽  
Gentoo Penguin ◽  
Pygoscelis Papua ◽  
Carbon And Nitrogen ◽  
Marine Predator ◽  
Nitrogen Isotope Fractionation
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