Invasive SpeciesJapanese knotweed

Fallopia japonica
FOUND by trythis
2010-08-25
Vinalhaven
ID Confirmed
Quality checked by Amy Palmer
Peer reviewed by
Field Notes
It was raining, so it was difficult to get good photos without damaging the camera, but I think I got them all.... I had to come back the next day to take some better shots. I'm not sure how to record species diversity when I am "just looking around." Is it the number of species within 5 meters? 50 meters? within eyesight?
Supporting Evidence
Photo of my evidence.
The leaves are large and oval shaped with smooth edges.
Photo of my evidence.
The flowers were growing in finger-like bunches.
Photo of my evidence.
The stems had swollen joints and grew in a zigzag pattern.
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Fallopia japonica
Common name:
Japanese knotweed
Sampling method: 
Just looking around
Photo of our sampling method.
Place Studied
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Map this species
Latitude: 
N 44.039680 °
Longitude: 
W -68.833350 °
Observation Site Information
A photo of our study site.
Name:
trythis's visit to Lane's Island Preserve (TNC)
Habitat: 
Upland - Field
Trip Information
Name:
Lane's Island Preserve (TNC)
Trip date: 
Wed, 2010-08-25 16:00
Town or city: 
Vinalhaven
Type of investigation: 
Species Survey
Ecosystem: 
Upland
Watershed: 
Penobscot Bay???
Sampling Method: 
Just looking around
Nearest waterbody: 
Penobscot Bay

Comments

Submitted by apalmer on Mon, 2010-09-20 15:17.

nice spot

A beautiful place--too bad you found knotweed there! :)

Submitted by manyeyes on Fri, 2010-08-27 08:38.

Cloudy skies

Fieldwork on the rainiest day of this otherwise super dry summer?! That's some serious commitment!

Thanks for the glimpse of beautiful Vinalhaven in your site photo!

Submitted by gbh on Thu, 2010-08-26 13:08.

yes, and good question

Hi there,

I have confirmed your identification - you made a very clear case and reported on relevant characteristics. Well done.

You ask a great question about biodiversity counts and the "just looking around" method. The truth is, a biodiversity count is only useful when you have defined the area in which you are looking. If you don't have a defined area, like a quadrat, a biodiversity count is meaningless data. Your question hit the nail on the head.

cheers.

Submitted by cryoftheloon on Thu, 2010-08-26 11:04.

Knotweed

Good job trythis. I made sure the pictures we took were better than those at Ft. Williams. Hope you or myself win the camera.