The conservancy, working with several groups in the Bronx, plans to collect data on native plants and the soil, then coordinate with other groups to eliminate the invaders.

“It doesn’t make sense if the Botanical Garden is removing an invasive and just a few feet away in the Bronx Zoo, it’s not being addressed,” Ms. Charlop-Powers said. “We’re looking to make sure we’re all working effectively together.”

The effort is the latest step in managing the city’s forests. In 2017, the Prospect Park Alliance sent goats to Prospect Park in Brooklyn to do some weeding, which involved eating invasive species.

Last year, the conservancy worked with the alliance to plant trees on Lookout Hill in the park.

The conservancy is beginning a separate partnership for Manhattan’s Riverside Park, where Daniel Garodnick, the former City Council member who became chief executive of the Riverside Park Conservancy last year, is also worried about invasive species.

The offenders there — Norway maples, white mulberries and porcelain berries — do not arrive on water. “A human brings seed from somewhere else into their own garden,” Mr. Garodnick said, “and then a bird or the wind will move it elsewhere.”

That can happen a lot, because Riverside Park is a rest stop for migratory birds.

“We want to allow different species to be able to survive and thrive in our park,” he said, noting that “we need to align our goals with the ecology of the rest of the city and region.”

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