کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4398751 | 1306703 | 2013 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Determination of absorption coefficients for chlorophyll a, phycocyanin, mineral matter and CDOM from three central Indiana reservoirs
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم زمین و سیاره ای (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Determination of absorption coefficients for chlorophyll a, phycocyanin, mineral matter and CDOM from three central Indiana reservoirs Determination of absorption coefficients for chlorophyll a, phycocyanin, mineral matter and CDOM from three central Indiana reservoirs](/preview/png/4398751.png)
چکیده انگلیسی
Absorption coefficients are used in semi-empirical and bio-optical models to estimate various optically active constituents in water. This study determines the mass-specific absorption coefficients of chlorophyll a (a*chl), phycocyanin (a*pc), minerals (a*m), and chromophoric dissolved organic matter (CDOM; a*CDOM) and the absorption coefficient for CDOM (aCDOM) for three central Indiana reservoirs. Absorption spectra were collected using a Shimadzu spectrophotometer equipped with a Spectralon coated integrating sphere. Quantitative measurements from either fluorometric (chlorophyll a, phycocyanin, CDOM) or weight-based (mineral) measurements were used to determine the mass-specific absorption coefficients tested in this study and an exponential function was used to estimate aCDOM. While a*chl showed minimum variability between reservoirs, a*pc, a*m, a*CDOM, and aCDOM showed statistically significant differences between reservoirs; however, for a*m, there was greater variation within each reservoir. Variability in a*CDOM and aCDOM between reservoirs was likely due to different inflows. All absorption coefficients fell within previously published ranges for each constituent examined, with the exception of a*pc. Differences in a*pc were likely due to different techniques used in extracting and estimating phycocyanin.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Great Lakes Research - Volume 39, Supplement 1, 2013, Pages 151-160
Journal: Journal of Great Lakes Research - Volume 39, Supplement 1, 2013, Pages 151-160
نویسندگان
Anthony Nguy-Robertson, Lin Li, Lenore P. Tedesco, Jeffrey S. Wilson, Emmanuel Soyeux,