DISTRIBUTION AND SIGNIFICANCE OF VITAMIN B 12 AND THIAMINE IN THE SUBARCTIC PACIFIC OCEAN1

• Published in: Limnology and Oceanography
• Main Author: NATARAJAN, K. V.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1970
• Subjects: Aquatic Science; Oceanography; Pacific; Subarctic
• Online Access: http://dx.doi.org/10.4319/lo.1970.15.4.0655; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1970.15.4.0655; https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1970.15.4.0655

The distribution of vitamin B 12 and thiamine was investigated in the Subarctic Pacific Ocean extending from Kodiak Island to the Pribilof Islands. Vitamin B 12 concentration was found to range from undetectable levels up to 3.39 ng/liter and thiamine from undetectable levels up to 445 ng/liter. Vitamin B 12 was present in 86% of the samples and thiamine in 74%. High concentrations, especially of thiamine, were found in low nutrient areas. Thiamine showed a fair negative correlation with PO 4 ‐P, NO 3 ‐N, and SiO 3 ‐Si concentrations whereas vitamin Bu had no significant correlation with anything else measured. Enrichment experiments showed that thiamine increased the relative uptake of 14 C whereas vitamin B 12 had no significant effects.