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In the deep ocean, marine snow (also known as "ocean dandruff") is a continuous shower of mostly organic detritus falling from the upper layers of the water column. It is a significant means of exporting energy from the light -rich photic zone to the aphotic zone below, which is referred to as the biological pump .
In the deep Sargasso Sea, scientists from the Woods Hole Oceanographic Institution (WHOI) found what became known as marine snow in which the POM are repackaged into much larger particles which sink at much greater speed, falling like snow. [30] Because of the sparsity of food, the organisms living on and in the bottom are generally opportunistic.
Marine mucilage appears following an increase of phosphorus. In one 2021 case phosphorus values were three to four times higher than the previous year. Other excess nutrients [4] combined with drought conditions and prolonged warm sea temperatures and calm weather contributed. Marine mucilage is also produced by phytoplankton when they are ...
This device descends down the water column and takes images of the amount and size distribution of marine snow at various depths. These tiny particles are a food source for other organisms so it is important to monitor the different levels of marine snow to characterize the carbon cycling processes between the surface ocean and the mesopelagic. [3]
Marine snow comprises macroscopic organic aggregates >500 μm in size and originates from clumps of aggregated phytoplankton (phytodetritus), discarded appendicularian houses, fecal matter and other miscellaneous detrital particles, [56] Appendicularians secrete mucous feeding structures or "houses" to collect food particles and discard and ...
Cold-weather warfare, also known as cold-region warfare, arctic warfare or winter warfare, encompasses military operations affected by snow, ice, thawing conditions, or cold, both on land and at sea, as well as the strategies and tactics used by military forces in these situations and environments.
The relative sparsity of primary producers means that the majority of organisms living in the abyssal zone depend on the marine snow that falls from oceanic layers above. The biomass of the abyssal zone actually increases near the seafloor as most of the decomposing material and decomposers rest on the seabed. [9]
Alice Alldredge is an American oceanographer and marine biologist who studies marine snow, carbon cycling, microbes and plankton in the ecology of the ocean. She has been one of the most cited scientific researchers since 2003.