Invasive SpeciesDasysiphonia

Dasysiphonia japonica
FOUND by DJ2
2016-11-06
Portland
ID Confirmed
Quality checked by Ansel
Peer reviewed by Liam
Field Notes
The seaweed was collected 10/25/16 at a depth of 16 feet. There was about 60% red seaweed in our sample while there was about 50% Dasysiphonia Japonica within that red seaweed.
Supporting Evidence
Photo of my evidence.
In this picture, the side branches are single celled while the main branches is multicellular. This picture shows many similarities to other pictures of Dasysiphonia japonica under 100x magnification.
Photo of my evidence.
This picture has clusters of branches which shows that it matches Dasysiphonia japonica. This picture also shows that the ends of the branches do not have shepard's hooks, which is another reason it's Dasysiphonia japonica.
Photo of my evidence.
This picture shows an axial growth pattern that matches the growth pattern of Dasysiphonia japonica. Our sample also shows a round thallus which Dasysiphonia japonica also has.
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Dasysiphonia japonica
Common name:
Dasysiphonia
Sampling method: 
Quadrat (user-placement)
Photo of our sampling method.
Place Studied
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Map this species
Latitude: 
N 43.837300 °
Longitude: 
W -69.549500 °
Observation Site Information
A photo of our study site.
Habitat: 
Coastal - Rocky intertidal
Trip Information
Name:
Maine Coast
Trip date: 
Sun, 2016-11-06 10:11
Town or city: 
Portland
Type of investigation: 
Species Survey
Ecosystem: 
Coastal
Watershed: 
Presumpscot
Time of low tide: 
Sun, 2016-11-06 08:55

Comments

This is clearly Dasysiphonia! Awesome photos and great supporting evidence

Congrats DJ2! You found dasysiphonia japonica. You can most clearly tell in the first and third images and your explanations are great!

Great microscope photos!