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

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

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!

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.

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