Background

Of the 175+ aquatic invasive species and non-indigenous aquatic species with resident populations in the Great Lakes, about 36% of them are vascular plants.


NY Sea Grant Aquatic Invasive Plants Fact Sheet Series

European Frog-Bit (Hydrocharis morsus-ranae) – Floating Invader of Great Lakes Basin Waters
CR O'Neill. 2007. 4 pp. (pdf)

This 4 page factsheet takes a look at this emergent plant, which resembles miniature water lilies, has started to agressively increase its range in Quebec and New York. The publication addresses: identification and biology; distribution; habitat; impacts; and, management and control technologies. Also inclued are color photographs and print and Web references.

Giant Hogweed (Heracleum mantegazzianum) - Poisonous Invader of the Northeast
CR O'Neill. 2006. 8 pp. (pdf)

This 8 page factsheet discusses New York State's most striking, and dangerous, invasive plant, the giant hogweed (Heracleum mantegazzianum). It contains information on the plant's history and distribution, biology and habitat, keys for identification (and for telling this plant from several more common look-alikes), ecological and human health impacts, and control technologies. Also inclued are extensive color photographs and print and Web references.


Hydrilla (Hydrilla verticillata) - NOT WANTED!: An invasive aquatic plant
CR O'Neill. 2012. Brochure (pdf)
A brochure for use educating boaters, shoreline property owners, anglers, and other water recreators regarding the prevention of spread of this invasive water weed.


Hydrilla (Hydrilla verticillata): What Marinas Need to Know (pdf)
CR O'Neill. 2012. Fact Sheet. 2 pp.
A fact sheet for marina owners and recreational boaters on how to help prevent the spread of this invasive water weed.


Water Chestnut (Trapa natans) in the Northeast
CR O'Neill. 2006. 4 pp. (pdf)

This 4 page factsheet discusses a major water fouling aquatic invasive plant, the water chestnut (Trapa natans), but not the kind you find in grocery stores sliced in cans. The publication addresses: identification and biology; distribution; physical, ecological and economic impacts; and, control technologies. Also inclued are color photographs and print and Web references.



NY Sea Grant Aquatic Invasive Plants Outreach Projects

NorthEast Water Chestnut Web : www.nyis.info

This Website was developed by New York Sea Grant with funding from the National Sea Grant College Program. Here you will find information on:

• The biology and impacts of water chestnut (Trapa natans)
• Distribution of water chestnut throughout the Northeast and Mid-Atlantic states and provinces
• State and federal statutes and regulations regarding the introduction, transport, control and management of water chestnut
• Projects to control water chestnut in the Northeast
  Water chestnut public outreach education programs
  Water chestnut-related outreach education materials available in electronic format
• A water chestnut bibliography