User:Josantosusf/Oyster

Ecosystem services
The filter feeding behavior of oysters can buffer against environmental degradation caused by human-induced eutrophication of estuary systems. Oysters feed on suspended phytoplankton and other organic matter. Disruption of the filter feeding by oysters can lead to a decrease in the elimination of organic matter from the water column and increase phytoplankton abundance. This in turn may lead to seasonal anoxia, which could increase mortality for other estuary animals, such as fish. Oyster reefs can also impact the carbon sequestration and excess nutrient uptake. Oyster reefs also stabilize shorelines by promoting sediment deposition and buffering wave energy, thereby allowing other habitats such as sea grass beds and marsh areas to form while simultaneously decreasing erosion of the shoreline. Oyster reef habitats have been recognized as green infrastructure for shoreline protection.

The accidental or intentional introduction of species by humans has the potential to negatively impact native oyster populations. For example, non-native species in Tomales Bay have resulted in the loss of half of California's Olympia oysters. Oyster reefs occupy a small fraction of their distribution prior to mass harvesting during the last three centuries

In October 2017, it was reported that underwater noise pollution can affect oysters as they close their shells when exposed to low frequencies of sounds in experimental conditions. Oysters rely on hearing waves and currents to regulate their circadian rhythms, and perception of weather events—such as rain—may induce spawning. Cargo ships, pile drivers, and explosions conducted underwater produce low frequencies that may be detected by oysters.

Environmental stressors as a result of global change are also negatively impacting oysters around the world, with many impacts affecting molecular, physiological, and behavioral processes in species including Magallana gigas.

(these facts are really really interesting. Is there mabe anything you can add as to their benefits to filtration of water or even their nutrient cycling process? any specifics?)