Invasive SpeciesDasysiphonia

Dasysiphonia japonica
FOUND by themonkeybandits
Cape Elizabeth
ID Questioned
Quality checked by Kris M
Peer reviewed by Swampfrogs
Field Notes
It was a cold and misty day at Kettle Cove Beach in the fall at 9:30 in the morning. We smelled low tide as we searched for Asian red algae. We looked on the rocks where we found none of the Asian red algae. We did find it on the beach. On the beach there were loads of Asian red algae and a small amount of other seaweed that was not the Asian red algae. We had a great time at the beach and we hope to go again some time.
A sketch of our study site.
Supporting Evidence
Photo of my evidence.
This is the Asian red algae because our species was reddish-brown just like Asian red algae. The other seaweed on the beach was either yellow or green, Asian red algae is not those colors. We got this information from the Vital Signs Id Sheet.
Photo of my evidence.
This is the Asian red algae because our species had axial growth where the branches grow off the main stem. The difference between dichotomus growth is where branches grow off other branches. This is a know characteristic of the Asian red algae.
Photo of my evidence.
This is the Asian red algae because the species we found had rounded tops of the branches and did not have flat tops. This is a know fact about the Asian red algae.
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Dasysiphonia japonica
Common name:
Sampling method: 
Just looking around
Photo of our sampling method.
Place Studied
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Map this species
N 43.563240 °
W -70.219468 °
Observation Site Information
A photo of our study site.
Coastal - Beach or dune
Trip Information
Kettle Cove Cape Elizabeth
Trip date: 
Tue, 2014-10-28 09:08
Town or city: 
Cape Elizabeth
Type of investigation: 
Species Survey
Time of low tide: 
Tue, 2014-10-28 08:25


It's difficult to tell without light micrographs that illustrate the cellular structure.