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Ocean acidification is now on a path to reach lower pH levels than at any other point in the last 300 million years. [82] [73] The rate of ocean acidification (i.e. the rate of change in pH value) is also estimated to be unprecedented over that same time scale. [83] [14] These expected changes are considered unprecedented in the geological record.
The sudden decline of carbonate production during the TOAE is widely believed to be the result of this abrupt episode of ocean acidification. [ 106 ] [ 107 ] [ 108 ] Additionally, the enhanced recycling of phosphorus back into seawater as a result of high temperatures and low seawater pH inhibited its mineralisation into apatite, helping ...
The list of organisms that may struggle due to ocean acidification include coccolithophores and foraminifera (the base of the marine food chain in many areas), human food sources such as oysters and mussels, [69] and perhaps the most conspicuous, a structure built by organisms – the coral reefs. [68]
Initially, many scientists focused on the benefits of the ocean removing this greenhouse gas from the atmosphere. However, decades of ocean observations now show that there is also a downside — the CO 2 absorbed by the ocean is changing the chemistry of the seawater, a process called ocean acidification. This change in the ocean’s chemistry ...
There are several other factors that influence the atmosphere-ocean CO 2 exchange, and thus local ocean acidification. These include ocean currents and upwelling zones, proximity to large continental rivers, sea ice coverage, and atmospheric exchange with nitrogen and sulfur from fossil fuel burning and agriculture. [35] [36] [37]
It is believed that this high stress environment will cause ocean acidification factors to have a stronger effect on these organisms. It could also cause these effects to appear in the Arctic before it appears in other parts of the ocean. There is a significant variation in the sensitivity of marine organisms to increased ocean acidification.
The Trump administration abruptly sent water flowing from two California dams. The action could leave less water in dams for the summer, when farmers typically use it.
In collaboration with Hopkins Marine Station and the Center for Ocean Solutions, Monterey Bay Aquarium Research Institute is developing a swFOCE system to examine the effects of ocean acidification on shallow subtidal communities in central California. swFOCE will use a shore side station for the control system and production of CO 2 enriched ...