Invasive Species

Information on pond management and invasive species, including European water chestnuts, algae blooms, Eurasian water milfoil and a Field Guide to Common Aquatic Plants of Pennsylvania.

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Preventing the Spread of Aquatic Invaders
Preventing the Spread of Aquatic Invaders - Webinars Webinars
Free
PA Sea Grant Personnel, Sarah Whitney and Sara Stahlman, discuss aquatic invasive species. More
Aquatic Invasives and Water Gardens
Aquatic Invasives and Water Gardens - Webinars Webinars
Free
Penn State Extension Water Resources Educator, Diane Oleson, highlights the practice of water gardening and how that relates to the spread of invasive species. More
Water Chestnut Rosette Photo: Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Focus on Aquatic Invasive Species – European Water Chestnut - Articles Articles
The European Water chestnut has nothing to do with the edible variety. It is a rooted aquatic plant that can dominate ponds, shallow lakes, and rivers. More
Identifying and Managing Aquatic Invasive Species
Identifying and Managing Aquatic Invasive Species - Webinars Webinars
Free
Diane Oleson from Penn State Extension discusses best management practices for aquatic invasive species. More
Water Gardening and Aquatic Invasive Species
Water Gardening and Aquatic Invasive Species - Webinars Webinars
Free
This presentation provides an overview of the Aquatic Invasive Species (AIS) Issue as it relates to Water Gardening. More
Water chestnut investation choking a pond. Photo: Pat Rector, Rutgers University Cooperative Extension
Aquatic Invasive Species in Pennsylvania - Videos Videos
Several Aquatic Invasive Species of particular concern in Pennsylvania are discussed, and their identifying characteristics reviewed. More
Physical Control of Aquatic Plants
Physical Control of Aquatic Plants - Videos Videos
There are a variety of physical control strategies that can be employed. Physically harvesting aquatic plants can have a positive, long-lasting effect. More
Cleaning Plants to Place In a Water Garden
Cleaning Plants to Place In a Water Garden - Videos Videos
This is a How-To Video that will guide you in the process of cleaning plants before adding them to a water feature. More
Causes and Prevention of Aquatic Plant and Algae Growth
Causes and Prevention of Aquatic Plant and Algae Growth - Videos Videos
When plants and algae grow abundantly, pond and lake owners often think about ways to eliminate the offending plant. Nutrient control is the long term solution. More
Biological Control of Aquatic Plants
Biological Control of Aquatic Plants - Videos Videos
There are a few biological methods, that when applied correctly can be very effective and environmentally friendly to your pond. More
Triploid grass carp are one potential management strategy for aquatic plants in your pond
Using Grass Carp to Control Aquatic Plants - Articles Articles

Using Grass Carp to Control Aquatic Plants

Bryan Swistock, Jennifer R Fetter, Amy Galford, James Andrew Clark

This information explains how to use grass carp for biological aquatic vegetation control. More
Pond Ecology
Pond Ecology - Articles Articles

Pond Ecology

Bryan Swistock

A brief overview of the natural processes of an earthen pond and how to maintain a healthy pond. More
Planktonic Algae
Planktonic Algae - Articles Articles

Planktonic Algae

Bryan Swistock

Planktonic algae floats in the water column and can sometimes be confused with muddy water. It causes the water to look green, brown or reddish in color. More
Naiad
Naiad - Articles Articles

Naiad

Bryan Swistock

One of the most common native, submerged pond plants in Pennsylvania. More
Figure 1. Filamentous algae as it typically appears in July or August after forming floating mats.
Filamentous Algae - Articles Articles

Filamentous Algae

Bryan Swistock

Different species of filamentous algae exist, but all have a similar growth habit. These algae begin growth in the winter and early spring on the pond bottom. More
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