Invasive SpeciesRock snot

Didymosphenia geminata
NOT FOUND by Demons
2011-09-08
Dedham
ID Confirmed
Quality checked by equinox
Peer reviewed by equinox
Field Notes
A sketch of our study site.
As soon as we reached our search location at Mill Stream, we saw lots of tall, densely placed trees, a covering of moss over the ground, and the stream flowing. We smelled fresh air and plants. After our search finished, we were happy because we didn't find invasive rock snot in the Mill Stream. However, we were surprised by what we didn't find because the location was so ideal for rock snot (very fast flowing stream) and there was none in the area.
Supporting Evidence
Photo of my evidence.
This photo shows some of the vegetation covering many of the rocks in the stream. We think this was not rock snot because it didn't resemble rock snot in color and did not feel like wet wool.
Photo of my evidence.
This moss covered some of the rocks in the stream. We could tell it was not rock snot because it was more like dry-land vegetation than algae, and did not look or feel like wet wool.
Photo of my evidence.
This photo shows the other type of moss that covered rocks in Mill Stream. We decided it wasn't rock snot because of its deep green color and the fact that it did not feel at all like wet wool.
Species Observation: Species Looked For
Did you find it?: 
I think I did not find it
Scientific name:
Didymosphenia geminata
Common name:
Rock snot
Count of individuals: 
Coverage: 
Reproduction: 
How big is it?: 
Is it male or female?: 
Sampling method: 
Just looking around
Photo of our sampling method.
Place Studied
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Map this species
Latitude: 
N 44.433444 °
Longitude: 
W -68.373693 °
Observation Site Information
A photo of our study site.
Name:
Demons's visit to Mill Stream
Habitat: 
Freshwater - In a stream or river
Trip Information
Name:
Mill Stream
Trip date: 
Thu, 2011-09-08 13:31
Town or city: 
Dedham
Type of investigation: 
Species and Habitat Survey
Ecosystem: 
Freshwater
Watershed: 
Eastern Coastal
Sampling Method: 
Time search
Nearest waterbody: 
Mill Stream
MIDAS Code: 
Habitat Observations
Species diversity: 
Evidence of vectors: 
Walking trail
People
Water temperature: 
pH: 
8.0
Dissolved oxygen: 
8.0mg/L

Comments

Submitted by PGregory on Wed, 2011-09-28 16:09.

Didymosphenia geminata was NOT FOUND

I agree, what you've found is NOT didymo. And yes, be happy that no one has introduced this destrucive pest into your stream! Testing texture, like you've reported, is a valuable criterion for determining whether you have Didymo. Thank for looking! --Paul