Aquatic Plant Inventory
Collectors: Kelly Condiff, Tony Duquette
Tech Support: Larry Cross, Charlie Parsons
Purpose: The complete cataloging of all aquatic plant species and an invasive species check of areas within defined borders of Potato Lake.
Reason: The creation of a database for the Potato Lake Association for use in lakeshore development and water quality issues.
Tools Used: Arcview 3.3, Garmin 76 GPS, Microsoft Excel and Notepad, Plant Hook, Rake, Lowrance X-75 Sonar.
Methods Used: The inventory was conducted using standard DNR protocol. The lake was laid out in a 50-meter grid point scheme. This gave Potato Lake approximately 4000 possible waypoints for inspection. The grid was further broken down, by separating the lake into 8 individual sections. This allowed for keeping each section waypoints at or near 500.
Findings: The waters of Potato Lake contain 31 species of aquatic plants, none of which are considered invasive. The breakdown of the 31 species are as follows, 7 total emergent species were recorded and 24 species of the submergent or floating leaf varieties were recorded. All four quadrants of Potato Lake have at least small areas of high species diversity still intact. These would be definite areas to be considered for future protection or possible sources of plants for restoration efforts.
Species found and abundances: The following names are of the plant species cataloged during inventory.
Abundance is determined as follows:
Rare- Occurs in less than 25% of sites where vegetation is found.
Occasional- Occurs in 25% to 50% of sites where vegetation is found.
Common- Occurs in 50% to 75% of sites where plants are found.
Abundant- Occurs in 75% or greater of sites where plants are found.
|Broadleaf Cattail||Typha latifolia||Occasional-A|
|Wild Rice||Zinzania aquatica||Occasional-A|
|Giant Burr Reed||Sparganium eurycarpum||Occasional-A|
|Softstem Bulrush||Scripus validus||Abundant-A|
|Giant Reed Grass||Phragmites australis||Rare-W|
|Common Milfoil||Myriophyllum sibricum||Occasional-A|
|Water Marigold||Megalodonta beckii||Rare-A|
|Mare’s Tail||Hippuris vulgaris||Occasional-A|
|Floating Duckweed||Lemna sp.||Rare-W|
|Wild Celery||Valisernia americana||Common-A|
|Common Water Weed||Elodea canadensis||Common-A|
|Bushy Pondweed||Najas flexilis||Common-A|
|Yellow Water Lily||Nuphar microphylla||Occasional-A|
|White Water Lily||Nymphaea odorata||Occasional-A|
|Longleaf Pondweed||Potamogeton nodosus||Abundant-A|
|Richardson’s Pondweed||Potamogeton richardsonii||Common-A|
|Whitestem Pondweed||Potamogeton praelongus||Common-A|
|Flatstem Pondweed||Potamogeton zosteriformis||Abundant-A|
|Straightleaf Pondweed||Potamogeton strictifolius||Occasional-A|
|Bigleaf Pondweed||Potamogeton amplifolius||Rare-W|
|Illinois Pondweed||Potamogeton illinoensis||Rare-W|
|Fries Pondweed||Potamogeton friesii||Occasional-E,M|
|Leafy pondweed||Potamogeton foliosus||Rare-W|
|Floating leaf Pondweed||Potamogeton natans||Rare-A|
|Sago Pondweed||Potamogeton pectinatus||Occasional -A|
|Threadleaf Pondweed||Potamogeton filiformis||Rare-E|
Findings: This report finds Potato Lake in good shape overall for plant species diversity. It does however indicate that there is only a small portion of the emergent plant communities remaining. There also appears to be a lack of native shoreline vegetation surrounding the lakeshore. It is imperative that this be remedied to insure future water quality.