ResearchTopic: Invasive Species

Curly-leaf Pondweed Fact Sheet

Species at a Glance Curly-Leaf Pondweed is an invasive aquatic perennial plant that can grow offshore in depths of up to 15 ft (4.5 m). It has the unique ability to form new plants under the ice in the winter, making it one of the first nuisance plants to emerge in the spring. Curly-Leaf Pondweed […]

Chinese Mitten Crab Fact Sheet

Species at a Glance This medium-sized burrowing crab was first reported in the San Francisco Estuary in 1992 and is currently only established in California, although individuals have been reported in several East Coast areas such as the Chesapeake Bay and the Hudson River. Its presence in North America is concerning due to the significant […]

Brazilian Elodea Fact Sheet

Species at a Glance Brazilian Elodea, also known as Brazilian Waterweed, is a leafy, submerged aquatic perennial plant. It is widely used as an aquarium plant because of its showy flowers and oxygen generating capabilities. Species Description Brazilian Elodea can reach lengths greater than 3 m (10 ft) and survive either rooted or free-floating in […]

Bloody Red Shrimp Fact Sheet

Species at a Glance The Bloody Red Shrimp is a tiny freshwater crustacean in the order Mysidacea; more commonly referred to as mysids. Mysids are also sometimes called opossum shrimp because females typically carry their eggs in a pouch. Species Description The Bloody Red Shrimp is small, with males reaching only 8-10 mm and females […]

Basket Clam Fact Sheet

Species at a Glance The Basket Clam, also called the Asiatic Clam, Pygmy Clam, or Gold Clam, is a small, freshwater bivalve that rarely exceeds the size of a nickel. This invasive clam has spread rapidly in lakes, canals, streams, rivers, and reservoirs, threatening ecosystems and lakeside communities throughout North America. Species Description The shell […]

AIS Prevention Tips for Water Gardeners

Water gardening is a popular hobby and is one of the fastest growing branches of the aquarium trade. While water gardens are beautiful and promote feelings of serenity and calm, they can also represent troubled waters. Aquatic invasive species (AIS) can be accidentally introduced and spread by water gardening activities. It’s important that water gardeners […]

AIS Prevention Tips for Aquarium Owners

The aquarium industry is a popular hobby in the United States, with more than 13 million households maintaining aquariums. However, when owners decide they no longer want, or can no longer take care of the animals and plants in their aquariums, species are often released into the natural environment where they can establish and become […]

Elige lo nativo

Guía de Pensilvania para el uso de especies nativas en el paisajismo y jardinería acuática Esta guía es un recurso portátil que ayuda a paisajistas profesionales, propietarios de viviendas y aficionados a la jardinería a elegir especies nativas en lugar de no nativas, ornamentales o incluso invasoras para paisajismo, jardines y jardines acuáticos. Ya sea […]

Choose Native

Pennsylvania’s Guide to Using Native Species in Landscaping and Water Gardening This guide serves as a portable resource to assist professional landscapers, homeowners, and garden enthusiasts in selecting native species over non-native, ornamental, or even invasive species for landscaping, gardens, and water gardens. Whether constructing a garden from scratch, converting an existing garden, or completely […]

Aquatic food web changes to invasive Flathead Catfish along a natural invasion gradient

Biological invasions have the potential to significantly alter the structure and function of aquatic communities. Invasive predatory fish species are known to restructure food webs – since predatory fishes have a dominant influence on community structure in freshwater systems. The Flathead Catfish Pylodictis olivaris is a large piscivorous catfish that is invasive in many parts […]

ResearchTopic: Invasive Species

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