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Interactions between the atmosphere and ecosytems

The atmosphere exchanges water, oxygen, carbon dioxide, and many other compounds with the ecosystem, above all in the form of gases or aerosols. Some of these compounds, such as VOCs, are emitted by organisms and modify not only their near environment but also the global chemical composition of the atmosphere.

With global change, interactions between the ecosystem and the atmosphere are being modified. For some species, these changes can be positive (for example because they increase pollinators and reduce predators), and for others they can be negative (for example due to the accumulation of contaminants or the reduction of available water). The combination of changes modifies ecosystem function. 

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