Seasonal distribution of vitamin B12 in Lake Kinneret.
AUTOR(ES)
Cavari, B
RESUMO
Vitamin B12 is formed in Lake Kinneret in the hypolimnion and in the sediment. The highest value of B12 recorded in the lake water was about 100 ng/liter in November and December of 1975 at a 40-m depth. The vitamin was liberated from the hypolimnion during the turnover period. This supply of the vitamin to the photic zone was accompanied by increasing biomass of Dinoflagellates, Bacillariophyta, and Chlorophyta. The decrease in the vitamin concentration, followed by an increase, is correlated with a decline and subsequent rise in the algal biomass, respectively. Cyanophyta biomass, on the other hand, increased when the vitamin concentration in the photic zone was at its lowest level.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=242608Documentos Relacionados
- Vitamin B12 Production and Depletion in a Naturally Occurring Eutrophic Lake1
- Vitamin B12 absorption studies: effect of parenteral non-radioactive vitamin B12 on serum level of 57Co vitamin B12
- The Role of the Pancreas in Vitamin B12 Absorption: Studies of Vitamin B12 Absorption in Partially Pancreatectomized Rats
- Sequential changes in cell volume distribution during vitamin B12 starvation of Euglena gracilis.
- Absorption of vitamin B12 in rheumatoid arthritis.