scholarly journals Dried Blood Spot Sampling of Landlocked Arctic Char ( Salvelinus alpinus ) for Estimating Mercury Exposure and Stable Carbon Isotope Fingerprinting of Essential Amino Acids

2020 ◽  
Vol 39 (4) ◽  
pp. 893-903 ◽  
Author(s):  
Benjamin D. Barst ◽  
Matthew J. Wooller ◽  
Diane M. O'Brien ◽  
Andrea Santa‐Rios ◽  
Niladri Basu ◽  
...  
Keyword(s):  
Amino Acids ◽  
Carbon Isotope ◽  
Salvelinus Alpinus ◽  
Stable Carbon Isotope ◽  
Essential Amino Acids ◽  
Mercury Exposure ◽  
Arctic Char ◽  
Dried Blood Spot ◽  
Stable Carbon ◽  
Blood Spot

Amino Acids and Stable Carbon Isotope Distributions in Taihu Lake, China, Over the Last 15,000 Years, and Their Paleoecological Implications

2000 ◽  
Vol 53 (2) ◽  
pp. 223-228 ◽  
Author(s):  
Wang Jinquan ◽  
Liu Jinling
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Carbon Isotope ◽  
Organic Nitrogen ◽  
Taihu Lake ◽  
Stable Carbon Isotope ◽  
Carbon Sources ◽  
Stable Carbon ◽  
Amino Acid Contents ◽  
Organic Productivity

AbstractAmino acid, organic nitrogen, and stable carbon isotope (13C/12C) profiles through a core from East Taihu Lake are interpreted in terms of paleoecology and paleoclimate over the last ca. 15,000 yr. Lower amino acid contents and higher δ13C values at the base of the core represent a cool and arid climate, and coincide with low organic productivity. A marked increase in total amino acids and organic nitrogen, with a decrease in δ13C values from 193 to 90 cm (ca. 6500–6000 yr B.P.), indicates a warmer and moist climate, and greater organic productivity. Amino acids then decrease in abundance, while δ13C values increase progressively, beginning at 73 cm (ca. 6000 yr B.P.), reflecting cooling and lower organic productivity. The average δ13C values from a core from West Taihu Lake are evidently higher than values from East Taihu Lake. The latter may reflect a stream environment, whereas the high δ13C values from West Taihu Lake likely reflect autotrophic carbon sources and a lacustrine environment since 11,000 yr B.P.

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