Even more confusingly, effect can also be a verb meaning “to make happen,” as in We can effect a new and better society through reform. However, affect can also be used as a noun to refer to an emotional response or state, as in She plays the character with an artificially cheerful affect. If you want to use a noun, chances are you want effect. If the word you’re using is a verb, chances are you want affect. This sense of effect appears in a few common idiomatic phrases, including in effect and take effect. Effect is most commonly used as a noun meaning “a result or consequence,” as in His words had the intended effect (result). affect or effectĪffect is most commonly used as a verb meaning “to act on or produce a change in someone or something,” as in Even a small adjustment can affect (change) the outcome of the experiment. And affect can also be used as a noun referring to a state of emotion, as in He had a sad affect. But effect can also be used as a verb meaning to make happen, most commonly in the phrase effect change. This study shows that nighttime warming rather than daytime warming plays a much more important role in promoting the recruitment in alpine treelines, which further deepens the understanding of the impacts of the ongoing climate warming on mountain ecosystems.Affect is most commonly used as a verb meaning “to act on or produce a change in someone or something.” Effect is most commonly used as a noun meaning “a result or consequence,” as in cause and effect. The study results have been published in Global Change Biology. "Such an asymmetric effect of daytime and nighttime warming on treeline recruitment could be attributed to the occurrence of drought stress, which is mainly caused by daytime warming rather than by nighttime warming," explains Dang Haishan, Professor at Wuhan Botanical Garden. The results indicate that both daytime and nighttime warming have positive effects on treeline recruitment across different regions of the Northern Hemisphere, but their contributions are uneven. In an effort to identify the differential effects of daytime and nighttime warming on treeline recruitment, researchers from the Wuhan Botanical Garden of the Chinese Academy of Sciences synthesized the time series of tree recruitment in alpine treelines after 1900 from 172 treeline sites across the Northern Hemisphere.
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