When areas of the ocean are low in iron, the plankton population usually remains sparse.
Although the TGP for these regions (all of which, except Iringa, are situated along the coast of Indian Ocean) was low, IDD, including brain damage, can occur unless iodine enters the food chain through addition of iodine to foods [ 2, 26].
What they found was that as hatchery fish are released in larger numbers, wild fish have become less successful, particularly in years when ocean productivity is low.
The turbine is expected to work in most of China's sea areas where the ocean current velocity is low and to supply electricity for remote islands.
When the Sun's rays are perpendicular to a smooth ocean surface, reflectance is low.
In some environments such as the open ocean viral density is low and VLP concentrating methods such as tangential flow filtration or FeCl3 precipitation have to be used in addition to purification methods to obtain a sufficient density of VLPs for sequencing [ 16].
The water of the Dead Sea is used by Israel and Jordan as a source for potash, while the concentration in normal oceans is too low for commercial production at current prices.
Diatoms are scarce in large parts of the Southern Ocean, because the water is low in silica, a key ingredient they need to grow.
In the absence of ocean upwelling, food abundance is low, causing starvation of many marine organisms [10].
