. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder . 5000L Figure 23-13. Vertical profiles of particulate amino acids at various stations in the deep Bering Sea, continental slielf, and northern North Pacific areas. largely due to contamination by terrigenous materials since these stations are in Bristol Bay. PAC/POC and PAN/PON at these stations were found with the ranges of percent and percent respectively. These values do not conflict with the ratios obtained in the high latitude areas (30-50°N) of the North Pacific
. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder . 5000L Figure 23-13. Vertical profiles of particulate amino acids at various stations in the deep Bering Sea, continental slielf, and northern North Pacific areas. largely due to contamination by terrigenous materials since these stations are in Bristol Bay. PAC/POC and PAN/PON at these stations were found with the ranges of percent and percent respectively. These values do not conflict with the ratios obtained in the high latitude areas (30-50°N) of the North Pacific Ocean, but much lower values were found in tropical and sub- tropical areas of the Pacific Ocean (Handa et al. 1972). Amino acid composition of the particulate matter at stations 11 and 33 is shown in Table 23-3. Serine, glycine, and alanine were found to be the dominant components of particulate amino acids in the samples from £l11 depths, whereas aspartic acid and glutamic acids dominated from the euphotic zone (50 m) down. Valine, leucine, and lysine were found in intermediate concentrations in all of the samples analyzed. The amino acid composition of the par- ticulate matter collected from the surface was similar to that of marine phytoplankton, but the composi- tion varied with depth. The molar ratios of alanine and arginine tended to decrease with depth, while those of serine, glutamic acid, and glycine increased. Arginine, lysine, aspartic acid, glutamic acid, serine, glycine, and alanine have been reported as major amino acids in marine phytoplankton and in zooplankton and fecal pellets (Parsons et al. 1961, Siegel and Degens 1966, Starikova and Korshikova 1969, Daumas 1976). Arginine nearly disappeared from the water column in the deep waters of station 11, but was found at 2,000 m, the only depth sam- pled, at station 33. Rittenberg et al. (1963) and Degens et al. (1964) reported that arginine tended to decrease rapidly with depth in particulate matter and produce
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