Much of our invasive species problem stops at Lakefront drive. North of Lakefront, we have black locust, Lombardy Poplar, some asian bush honeysuckle, and a whole lot of autumn olive. The plants get large quickly are aggressive in overwhelming local species.
Here's what the Nature Conservancy has to say: “Autumn olive is an invasive species that out-competes and displaces native plants by creating a dense shade that hinders the growth of plants that need lots of sun. It can produce up to 200,000 seeds each year, and can spread over a variety of habitats as its nitrogen-fixing root nodules allows the plant to grow in even the most unfavorable soils. Not to mention that it reproduces quickly and with little effort at all.
Birds are quite attracted to the seeds, and will scatter them throughout pastures, along roadsides and near fences. Even attempting to remove autumn olive by cutting or burning from your property can cause unwanted spreading as the shrub germinates easily.”
It is so common that mapping isn't necessary. See it between the beach and Lakefront as well as lining Beverly.
Read Autumn Olive from Sand Tracks by Terry Bonace.