The isotope fractionation of 1,2-dichloropropane (1,2-D) during dichloroelimination to propene by Dehalococcoides populations was explored in laboratory experiments in order to provide data for the characterization of the fate of 1,2-D in heterogeneous subsurface systems. Compound specific stable carbon isotope analysis (CSIA) was used to determine the bulk enrichment factors (epsilonbulk), rea...

Compound-specific isotope analysis (CSIA) by isotope ratio mass spectrometry (IRMS) following on-line combustion (C) of compounds separated by gas chromatography (GC) is a relatively young analytical method. Due to its ability to measure isotope distribution at natural abundance level with great accuracy and high precision, GC-C-IRMS has increasingly become the method of choice in authenticity ...

Trophic position and niche width are fundamental components of a species’ ecology, reflecting resource use, influencing key demographic parameters such as somatic growth, maturation, survival. Concepts about trophic space have important implications for local management habitat protection, can shed light resilience to changing climate species occurring over broad spatial scales. For elusive mar...

Submit Manuscript | http://medcraveonline.com Abbreviations: LCPUFAs: Long-Chain Polyunsaturated Fatty Acids; ω6: Omega-6 Family; GLA: γ-Linolenic Acid; AA: Arachidonic Acid; ω3: Omega-3 Family; EPA: Eicosapentaenoic Acid; DHA: Docosahexaenoic Acid; AL: Linoleic Acid; AAL: Alpha-Linolenic Acids; vitamin A: Beta-Carotene; vitamin K: Phylloquinone; vitamin E: Alpha-Tocopherol; B1: Thiamine; B2: R...

Carbon stable isotope analysis is one of the most common methods for validating theories about the role microphytobenthos (MPB) plays in estuarine food webs. However, difficulties extracting MPB from sediments to determine a pure isotope signature have hampered such studies. We have developed compound-specific isotope analysis (CSIA) of phytol δ13C (δCphytol) as an accurate proxy for δ 13C of b...