The Oyashio current and the high concentration of nutrients in the Laminaria japonica seaweed. What relationship is there between these two concepts?
The waters in the Pacific that cover the oriental coasts of Russia have been the natural habitat of one of the greatest marine treasures for centuries, it is here, between the Oskhotsk and Japanese seas that grows, in these frigid waters, the Laminaria japonica species known commercially as Kombu seaweed. It is rich in trace elements such as phosphorus, iron, potassium, zinc, iodine, but is there a factor that has an influence in the overall content of minerals in the Kombu seaweed that comes from this area and Kombu seaweed that comes from other areas?
In addition to Laminaria japonica, there are 31 species of Laminarias, spread out in the North Atlantic and the North Pacific.
But what factors influence the great wealth of vitamins and minerals in Kombu seaweed?
Why is Kombu seaweed that comes from the North Pacific so rich in nutrients?. It is clear that the mineral composition and, in general, the nutritional composition of the species depends on the environment where said specie grows.
If we are talking about seaweed, the amount of nutrients will be reflected depending on if they grow in marine areas of greater or lesser fertility, and, curiously, the Kombu seaweed (Laminaria japonica) that grows in the North Pacific Ocean is in one of the most fertile areas in the world, influenced by large-scale oceanic flow and in particular by the Oyashio current.
The Oyashio current is a cold oceanographic current very rich in nutrients that flows from the Arctic and creates an area of influence of approximately 850,000km2 including the east part of the Kamchatka peninsular, the Kuril Islands, and the Sakhalin region. This region, influenced by the Oyashio current, is classified as an LME Class 1 ecosystem (Large Marine Ecosystem) that is, a highly productive ecosystem with very high biological productivity and a high diversity of flora and fauna, probably making up the richest fishing ground in the world due to the extremely high content of nutrients and the high tides (up to 10 metres) that reinforce even more the availability of nutrients and minerals present in these water masses, these minerals are captured and incorporated into the tissue of the Laminaria japonica seaweed or the Kombu seaweed that grows in the this region and explains to us finally why this seaweed possesses such a high amount of calcium, magnesium, phosphorus, iodine and vitamins that give it such beneficial nutritional properties, which curiously links our diet to large-scale oceanic flow.