The Long Island Invasive Species Management Area


Welcome to LIISMAsmiley

The Long Island Invasive Species Management Area (including Staten Island)


In The News

The New State Regulations on Invasive Species Are Now In Effect (March 2015)

You can find more information on the regulations and the lists of prohibited and regulated species on our Legislation Page.

DEC starts work on Southern Pine Beetle Control (Feb 2015)

DEC Region 1 has strarted to assess and control the damage to our pitch pines on Long Island before the insects begin their dispersal. We hope the low temperatures experienced on Long Island recently will slow their advance.

DEC Starts Kudzu Control In New York (Oct 2014)

This fall the DEC Kudzu Program started controlling infestations of kudzu in the Lower Hudson region, Staten island and Long Island. This is part of a long term program to eliminate kudzu from New York before it becomes a major problem. If you see a stand of kudzu you can report it by contacting LIISMA at liismaprism(at)

Headway Made with Sand Sedge on Staten Island (May 2014)

On May 6 a group of 20 people from Gateway NRA, NYC Parks, LIISMA, and Lower Hudson PRISM helped to protect Midland and Miller Field beaches by pulling hundreds of sand sedge plants (Carex kobomugi) that had become established after Hurricane Sandy. A sweep of the beaches after the work did not discover any new plants.  The beaches will be monitored over the summer to see if any new plants reappear. 

Clean, Drain, and Dry for Paddlers

Check out this video on the techniques for preventing the spread of Aquatic Invasive Species


Asiatic Sand Sedge Found on Staten Island (31 Oct 2013)

Like something out of a Halloween horror story, Carex kobomugi was found in the Great Kills and Miller Field areas of Gateway National Recreation Area on Staten Island this month.  These are the closest infestations in New York to the large infestations at Sandy Hook in New Jersey.  This week, volunteers at Gateway removed over 100 plants on the beach and will continue to monitor and dig up new plants in an effort to eradicate it before it spreads to other beaches of New York and greatly reduces beach habitat for people and rare species alike.


New State Invasive Species Regulations Released (25 Oct 2013)

Read about the regulations and the how they compare with Nassau and Suffolk County regulations. CLICK HERE


Keep a Watch Out for Waterwheel, Aldrovanda vesciculosa, in Local Ponds (2 Oct 2013)

This globally rare aquatic carnivorous plant has been introduced intentionally and unintentionally into water bodies in Virginia, New Jersey, and Orange County, New York. It may become established in LIISMA lakes and ponds through transport by birds and we would like to know if you find it when you are boating or wading around in the shallows near the shore where it grows. It looks like a bladderwort but has whorled leaves with insect traps on the end. It often occurs in the same habitat as the floating bladderworts. The following websites will give you more information and photos.  Contact if you see it.

Photos of the plant

IUCN Red List information

Wikipedia information


Asiatic Sand Sedge Surveyed at Breezy Point (6 Sep 2013)

A crew of four people from LIISMA, Gateway National Recreation Area and the NYC Parks Native Plant Garden spent the morning surveying for Carex kobomugi on two of the beaches at Breezy Point in Queens.  On West Beach 167 plants were found and removed and on the Bay Side 37 additional plants were removed. More surveys willl be done this fall to see how widespread it is at Gateway beaches. In the photo below notice the arching leaves (they are serrate on the edges) and the bright white base of the plant with roots and a rhizome coming out the bottom.

Asiatic Sand Sedge Found on Fire Island (13 Aug 2013)

A new and small infestation of Asiatic sand sedge (Carex kobomugi) was found on the beach at the Fire Island villages this week. This follows the discovery of the plant in the Rockaways where three large patches were surveyed last week. This emphasizes the need to be vigilant on all Long Island and Staten Island beaches for the occurrence of this dune plant that has the potential to change the ecology of many of our beaches and negatively affect recreation opportunities. For more information go to our species alert page.

New Infestation of Parrot's Feather Found in Oyster Bay (2 Aug 2013)

The volunteers and staff for the National Wildlife Refuge System found Parrot's Feather, Myriophyllum aquaticum, in Mill Pond in Oyster Bay while they were removing water chestnut.  It may have spread here from a nearby infestation in Shu Swamp that was discovered in the early 2000s.


Kudzu Bug Makes Rapid Progress Toward New York

The exotic kudzu bug, Megacopta cribraria, was first found in Georgia in 2009 and is now found as far north as Maryland and Delaware.  This stink bug eats kudzu but also eats soybean and possibly native legumes like hog peanut.  It also gathers in large numbers on the sides of houses. We will monitor the kudzu infestations we have in New York to see if or when it arrives. We are in the process of surveying and updating all of our kudzu locations in New York this summer.

More information about the bug can be found by CLICKING HERE


Caper Spurge (Euphorbia lathyris) Almost Eradicated on Long Island

There were two known locations for this invasive plant on Long Island but Mike Feder from NYC reports the occurrence in Forest Park in Queens has been eradicated by restoration work there (one remaining plant was pulled this summer).  One small population remains at Connetquot State Park and control efforts are ongoing. One other population was known as late as the 1980s at the Kalbfleisch Research Station in the Town of Huntington but the station and the plants were replaced by a housing development. See photos of the plant HERE.


Alligators found in Long Island Rivers

At least four alligators have been taken out of Long Island rivers this summer.

Owning alligators is illegal but people sometimes buy baby gators then release them when they get older. The reptiles cannot survive Long Island winters.

Anyone who spots an alligator on Long Island is urged to call 631-444-0250.

Asiatic Sand Sedge Detected on Long Island for the First Time

An infestation of Asiatic Sand Sedge (Carex kobomugi) was detected in the Rockaways this spring.  This is the first time we have documentation of its survival on the dunes in New York. This pernicious invasive sedge is creating bad problems on the dunes in New Jersey and could spread to other dunes in New York if it is not eradicated here first. Extensive surveys will take place in early August to determine the extent of the infestation after the rare plovers and terns have finished their reproductive activities.


MORE!         Species Alert Page!              

Go to our species alert page to see a list of early detection species with informative web links.

Keep your eye out for these species so they don't become established in LIISMA!

MORE!           Long Island Goat Grazing Study 2005-06

CLICK HERE to go to the resources page to read about the study.