|
Norway Lakes 2008 Invasive Aquatic Plant Screening Survey Report
By Lake and Watershed Resource Management Associates
PO Box 65, Turner, ME 04282
207-336-2980 ~ lwrma@megalink.net
To: Lakes Association of Norway
We are writing to document the findings of the Invasive Aquatic Plant Screening Surveys conducted on the Norway Lakes during the summer of 2008 by Lake & Watershed Resource Management Associates. The surveys, contracted by the Lakes Association of Norway, were conducted on the following four waterbodies on the dates indicated:
|
7/30/08 |
Hobbs Pond (Little Pennesseewassee) |
MIDAS# 367 |
|
9/28, 10/3 & 10/8/08 |
North Pond |
MIDAS# 3500 |
|
(Plus channel through the wetland to the boat landing) |
||
|
9/17, 9/19, 9/22 & 9/24/08 |
Pennesseewassee Lake |
MIDAS# 3434 |
|
7/30/08 |
Sand Pond |
MIDSAS# 3432 |
All surveys were classified as Level 3, which means that the entire littoral zone of the waterbody was included in the survey. (The littoral zone is defined as the portion of the waterbody where sunlight penetrates to the bottom and where rooted aquatic plants grow.)
All waterbodies were screened for the presence of the eleven invasive aquatic plants listed by Maine law as imminent threats to Maine waters: Brazilian elodea, curly-leaf pondweed, Eurasian water-milfoil, European Frogbit, European naiad, fanwort, parrot feather, yellow floating heart, variable water-milfoil, water chestnut, and hydrilla.
The surveys were conducted under suitable conditions (good light, relatively calm water) using standardized methods and equipment.
FINDINGS: No invasive aquatic plants were observed in any of the four lakes. Chinese mystery snails, a large non-native snail species, were observed and noted as abundant in Hobbs Pond, North Pond (and its associated wetland) and Pennesseewassee Lake.
Though complete, detailed native plant inventories were not part of the 2008 survey project; dominant native plants were noted in all four waterbodies. Below is a summary of the native plant data. (The most dominant species in each waterbody, when noted, are listed in bold font.)
Hobbs Pond (Little Pennesseewassee)bladderwort, common (Utricularia macrorhiza) bur-reed, narrow floating leaf (Sparganium angustifolium) naiad, slender (Najas flexilis) pickerel weed (Pontederia cordata) pipewort (Eriocaulon aquaticum) pondweed, fern (Potamogeton robbinsii) pondweed, floating leaf (Potamogeton natans) rush, bayonet (Juncus militaris) water lily, fragrant (Nymphea odorata) watersheild (Brasenia schreberi) |
Sand Pondlittle floating heart (Nymphoides cordata) metaphyton (colonial algae “clouds”) muskgrass (Chara spp.) pickerel weed (Pontederia cordata) pipewort (Eriocaulon aquaticum) water lily, fragrant (Nymphea odorata) watersheild (Brasenia schreberi) |
Pennesseewassee Lakebladderwort, common (Utricularia macrorhiza) bladderwort, large purple (Utricularia purpurea) bur-reed, floating leaf (Sparganium fluctuans) bur-reed, narrow floating leaf (Sparganium angustifolium) coontail (Ceratophyllum demersum) little floating heart (Nymphoides cordata) metaphyton (colonial algae “clouds”) naiad, slender (Najas flexilis) pickerel weed (Pontederia cordata) pipewort (Eriocaulon aquaticum) pondweed, clasping leaf (Potamogeton perfoliatus) pondweed, fern (Potamogeton robbinsii) pondweed, floating leaf (Potamogeton natans) pondweed, large-leaf (Potamogeton amplifolious) pondweed, small (Potamogeton spp.) pondweed, spiral fruited (Potamogeton spirillus) rush, bayonet (Juncus militaris) spatterdock (Nuphar variegata) water lily, fragrant (Nymphea odorata) water lobelia (Lobelia dortmanna) water marigold (Bidens beckii) water milfoil, dwarf (Myriophyllum tenellum) water milfoil, whorled (Myriophyllum verticillatum) wild celery (eel grass) (Vallisneria americana ) |
North Pond (plus channel through the associated wetland to the boat landing)aquatic moss spp. arrowhead, common (Sagittaria latifolia) bladderwort, common (Utricularia macrorhiza) bladderwort, large purple (Utricularia purpurea) badderwort spp. (Utricularia spp.) bur-reed, floating leaf (Sparganium fluctuans) bur-reed, spp. (emergent) (Sparganium spp.) coontail (Ceratophyllum demersum) metaphyton (colonial algae “clouds”) naiad, slender (Najas flexilis) pickerel weed (Pontederia cordata) pondweed, fern (Potamogeton robbinsii) pondweed, flat-stem (Potamogeton zosteriformis) pondweed, floating leaf (Potamogeton natans) pondweed, large-leaf (Potamogeton amplifolious) pondweed, ribbon-leaf (Potamogeton epihydrus) pondweed, small (Potamogeton spp.) spatterdock (Nuphar variegata) water lily, fragrant (Nymphea odorata) water marigold (Bidens beckii) watersheild (Brasenia schreberi) waterwort (Elatine minima) waterweed, slender (Elodea nutallii) wild celery (eel grass) (Vallisneria americana ) |
|
