Impact of atmospheric dry deposition of nutrients on phytoplankton pigment composition and primary production in the coastal Bay of Bengal

Impact of atmospheric anthropogenic nitrogen on new production in the northern Indian Ocean: constrained based on satellite aerosol optical depth and particulate nitrogen levels

“…Baker et al 91 reported that the acidity of the aerosols changes the lifetime of nitrate in the atmosphere and increases ammonium resulting in the long-range transport of ammonium and deposition close to the coast in the case of nitrate under acidic conditions. The acidic nature of the aerosols over the Bay of Bengal was reported recently by Kumari et al 33 and its impact on the portioning of nitrate and ammonium is unclear. Nevertheless, the role of organic nitrogen and wet deposition in total nitrogen deposition and its contribution to the external sources and surface primary production need further study.…”

“…The deposition of atmospheric nitrogen may enhance primary production in the surface ocean. 1,38 Recently, Kumari et al 33 measured an increase in primary production by 3-19% due to the deposition of atmospheric aerosols over the coastal Bay of Bengal, whereas Yadav et al 32 noticed an increase of 3 to 33%. An episodic increase in phytoplankton blooms associated with dust storms was reported in the northern Indian Ocean and attributed to the deposition of atmospheric nutrients.…”

“…[28][29][30][31] An increase in primary production and phytoplankton community change due to the deposition of atmospheric nutrients were reported in the Bay of Bengal. 32,33 Based on numerical models and remote sensing data, a signicant increase in surface chlorophyll-a associated with atmospheric aerosol deposition has been reported from the NIO. 8,[34][35][36] In addition, efforts have been made to measure the chemical composition of aerosols under the aegis of several national and international programs in India.…”

Will “Air Eutrophication” Increase the Risk of Ecological Threat to Public Health?

“…63 , 64 For example, it was found that atmospheric dry deposition of nutrients along the coastal Bay of Bengal resulted in an increase in primary production from 3% to 19%. 65 Aerosol deposits from wildfires, metals carried by volcanic lava, and deposition of nitrogen and phosphorus from burning fossil fuels have also been reported to stimulate the growth of aquatic phytoplankton. 66 , 67 But what about the stimulation of the growth of airborne algae?…”

“…Significant increases in nitrogen dioxide (NO 2 ) and reactive volatile organic compounds have also been widely reported, particularly in tropical cities . It has been shown that nitrogen-enriched acid rain and anthropogenic atmospheric nitrogen deposition can enhance marine primary production. , For example, it was found that atmospheric dry deposition of nutrients along the coastal Bay of Bengal resulted in an increase in primary production from 3% to 19% . Aerosol deposits from wildfires, metals carried by volcanic lava, and deposition of nitrogen and phosphorus from burning fossil fuels have also been reported to stimulate the growth of aquatic phytoplankton. , But what about the stimulation of the growth of airborne algae?…”