کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4397957 1305916 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An assessment of sample processing methods for stable isotope analyses of marine food webs
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم آبزیان
پیش نمایش صفحه اول مقاله
An assessment of sample processing methods for stable isotope analyses of marine food webs
چکیده انگلیسی

Carbon and nitrogen stable isotope ratios are commonly used in the study of marine food webs. However, different sample processing methods can influence the measurement of these stable isotope ratios. The purpose of this study is to define an adequate methodology to be used in the construction of whole food webs. It is demonstrated that acidification of the samples results in a decrease in carbon stable isotope values for sedimentary organic matter, suspended particulate organic matter, plankton and invertebrates with carbonated structures. The response was variable for nitrogen isotope ratios. Based on our results we recommend sample acidification for carbon analysis in these compartments where effects of this treatment were observed. We observed a decrease in δ13C values after washing with distilled water, so we do not recommend washing with water after acidification. For nitrogen analysis, acidification should be avoided. The various dehydration treatments studied caused significant differences only in nitrogen isotope ratios.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Experimental Marine Biology and Ecology - Volume 336, Issue 2, 5 September 2006, Pages 254–261
نویسندگان
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