However, the vast majority of oceanic surface waters are depleted in inorganic nitrogen, phosphorus, iron and/or silica; nutrients that limit primary production in the ocean ( Figure 1 ). Phytoplankton growth is mainly supported by either the recycling of nutrients or by reintroduction of nutrients...
The situation of nitrogen limiting in central Bohai Sea is gradually changing to that of relative lack of phosphate and silicate The decrease of the Huanghe River input to the Bohai Sea may be responsible for this change. These in turn may limit the growth of diatom and thus promote the ...
Rapid population growth and development aspirations in sub-Saharan Africa (SSA) has led to increased investment in agricultural intensification to meet food and economic demands1. However, this intensification is hindered by low soil nutrient content, rapid soil-nutrient depletion2,3, and the presence...
Whales remove CO2 from the air in two ways. First, they move nutrients(营养物) from their feeding areas deep in the ocean back to the surface, where they release them in their waste. Those nutrients aid the growth of phytoplankton(浮游植物),which, like other plants,...
During pregnancy, DHA, an omega-3 fat, accumulates in baby’s brain and retina. Mom supplies baby with DHA from stores in her body and her diet. vii Seafood, and the algae that ocean fish consume, provide DHA. Women who don’t eat enough fish or DHA-fortified foods may not be consum...
(humic F-intensity)], and nutrients in waters above the continental slope, along two transects across the shelf–basin interface, and above the continental shelf of the western Arctic Ocean (Fig. 1) and showed that these constituents are supplied from shelf sediments and then spread laterally ...
Phosphorus has been suggested to be the most limit- ing nutrient for phytoplankton primary production in the northern Adriatic Sea. Indeed, 80% of the inor- ganic N:P ratios found in the surface waters suggest that P is limiting phytoplankton growth (Chiaudani et al. 1980b),and bioassay ...
growth, while the role of nitrate, nitrite, phosphate and silicate remained insignificant. At the time of diatom population proliferates there was a drop in the nutrient levels was observed during the study. The water current flowing from north to south during the northeast monsoon, nutrient rich...
Decreased light availability for photosynthesis13, which reduces calcification14, productivity and growth rates, increases partial mortality, and disrupts the Symbiodinium-coral symbiosis2,15, are among the more serious effects that nutrient enriched sediments have on adult corals. In addition to stress ...
mixedPermanently Open Ocean Zone(POOZ, 14 M km2) is characterised by variable N/Si ratios in surface waters along a north-south transect: at the northern border of the POOZ (N/Si = 0.25) silicate concentrations as low as <10 μM could help limit the phytoplankton growth. Although ...