Specimen Information

Nitellopsis obtusa
Nitellopsis obtusa
(starry stonewort)
Plants
Exotic

Specimen ID1321777
GroupPlants
GenusNitellopsis
Speciesobtusa
Common Namestarry stonewort
StateWI
CountyDoor
LocalitySturgeon Bay Ship Canal, Lake Michigan
Mapping AccuracyAccurate
HUC8 NameLake Michigan
HUC8 Number04060200
HUC10 NameLake Michigan
HUC10 Number0406020000
HUC12 NameLake Michigan
HUC12 Number040602000000
Map
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Collection Day22
Collection Month8
Collection Year2016
Year AccuracyActual
Potential Pathwayhitch hiker on small watercraft
Statusestablished
Reference 1
Ref. Number:28980
Author:Wisconsin Department of Natural Resources.
Date:2016
Title:Starry stonewort verified in Door County's Sturgeon Bay; first confirmed discovery in Lake Michigan
Publisher:Wisconsin Department of Natural Resources
CommentsIt is the first confirmed discovery of the invasive macroalgae in Lake Michigan and the first occurrence in the state outside of six southeastern Wisconsin lakes. SSW was found at 19 locations along the channel, which is estimated to be approximately 3% of the littoral zone.
Record TypeLiterature
Earliest Recorddrainage
VerifierKen G. Karol, NYBG
Freshwater/MarineFreshwater
Photo




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The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2020]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/1/2020].

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