The National Park Service has been monitoring plants in hundreds of sites throughout the Santa Monica Mountains National Recreation Area in Southern California since 2014. A new analysis of these data published in the journal Ecosphere shows a steady increase in non-native plant cover since 2014, and rapid regrowth of non-native annual grass and herbaceous species after the 2018 Woolsey Fire, which burned nearly 80% of the entire region. Furthermore, a region of dense non-native cover was found in the Northern Simi Hills region where biodiversity is significantly low and the native species are at risk of further reduction.

https://www.miragenews.com/non-native-cover-threatens-santa-monica-1046562/

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