Species that are considered uncertain risk need a more in-depth assessment beyond the Risk Summary to better define the species’ risk to U.S. environments.
Nymphaea odorata is a floating leaved aquatic plant native to parts of North America and the Caribbean. The history of invasiveness for N. odorata is classified as “Data Deficient.” This ornamental species has been introduced by humans into new environments. This plant is suggested to alter water chemistry, change plankton communities, and negatively affect local fish populations. It grows in dense mats on the surface of the water, potentially limiting recreational use. A peer-reviewed laboratory experiment showed that N. odorata has the ability to suppress germination and growth of native species. Climate matching indicated the contiguous United States has a high climate match. This is unsurprising given the fact that N. odorata is established in most American states. It is native to the eastern United States and is considered an invader in the west. The certainty of assessment is medium. The overall risk assessment category is uncertain.
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Uncertain Risk
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