Myriophyllum heterophyllum was FOUND

on 2009-10-22 in Portland, ME
Submitted by BioNewtonBaxter on Fri, 2009-10-30 at 11:45 am
ID was Questioned by a Vital Signs Expert Reviewer
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Field Notes

We had a few problems that might skew our observations. We couldn’t smell anything. We could hear cars whizzing past us. We also saw a lot of leaves on the pond and around the pond, also there were 2 trees that had fallen into the pond. We were surprised because we didn’t expect to see trees in the water.

Supporting evidence
Photo of my evidence.

The Watermilfoil was found submerged.

Photo of my evidence.

The Watermilfoil had whorled leaves

Photo of my evidence.

The Watermilfoil had feather divided leaves

Species Observation:
Species Looked For
Common name:
Variable watermilfoil
Scientific name:
Myriophyllum heterophyllum
Was found?
I think I found it
Count of individuals?
Coverage?
Less than 1/4 covered
Dead or alive?
Size:
Sex:
Evidence of reproduction:
Sampling method:
  • Weed weasel
Place studied
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Latitude:
43.676480 ° N
Longitude:
-70.287700 ° W
Observation Site Information
A photo of our study site.
Name:
BioNewtonBaxter's visit to Pond in Baxter Woods, Portland, ME (Newton)
Habitat:
Freshwater - In a pond or lake
Trip Information
Trip name:
Pond in Baxter Woods, Portland, ME (Newton)
Trip date:
2009-10-22
Nearest town:
Portland, ME
Type of investigation:
Species and Habitat Survey
Ecosystem:
Freshwater
MIDAS number:
Watershed:
Presumpscot
Nearest waterbody:
Photo of our sampling method.
Habitat Observations
Diversity:
3 different species
Water temperature:
6.9 ° C
pH:
8.0
Dissolved oxygen:
6.0 mg/L
Salinity:
Vectors:
  • Paved road

  • Walking trail

  • People

Comments

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Too skinny!

You were looking for the right features, but fortunately the plant you found is only a partial match. I would more closely describe the leaves in your photo as elliptical, rather than feather divided. I'm also not seeing a plant that resembles a bottle brush or racoon tail.

Were there a lot of the same submerged plant in one place creating a dense mat of weeds? That would be a good indication of an invasion.

We have it too

We have a HUGE milfoil problem in Lake Arrowhead, especially in the Brown Brook area. Thankfully, we've taken steps to stop it.

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