Native SpeciesKnotted wrack

Ascophyllum nodosum
FOUND by Kettle Kove Kel...
2017-10-24
Cape Elizabeth
ID Confirmed
Quality checked by Fanning
Peer reviewed by Kings of Kettle Cove
Field Notes
We arrived at Kettle Cove beach at 9:30 A.M. The conditions in the field were wet and foggy, and the rocks were slippery and covered with seaweed. The day was cold and with the wind chill it was even colder. It was 62º Farenheit. Rocks spread halfway across the beach. Since it was low tide an hour earlier, it was flood tide when we first got there. We were out collecting data because we wanted to find out what species live in our ecosystem, and about invasive and native species in Maine. We had little trouble finding our species, the Knotted Wrack, since it covered most of the rocks close to the ocean.
Supporting Evidence
Photo of my evidence.
We think we found the Knotted Wrack. A characteristic that it had was that each branch had at least 2 vesicles that grew on them. The vesicles were oval-shaped and small. The male vesicles were an olive-yellow color, and the female vesicles were darker green. The Knotted Wrack has the same shape and color of the vesicles.
Photo of my evidence.
We think we found the Knotted Wrack. A characteristic that showed that it was the Knotted Wrack were the rubbery branches that were about 60 centimeters long. A characteristic that showed that it was the Knotted Wrack and not the Bladder Wrack were that the branches were flat. It did not have a midrib, unlike the Bladder Wrack.
Photo of my evidence.
We think we found the Knotted Wrack. One characteristic of the Knotted Wrack that was shared with the plant that was found was the color. The Knotted Wrack has been shown to either have an olive-yellow color or a dark green-brown color. The plant that was found had a green-brown color at the base of the branches that blended into a olive-yellow color.
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Ascophyllum nodosum
Common name:
Knotted wrack
Sampling method: 
Just looking around
Photo of our sampling method.
Place Studied
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Map this species
Latitude: 
N 43.561100 °
Longitude: 
W -70.217500 °
Observation Site Information
A photo of our study site.
Habitat: 
Coastal - Rocky intertidal
Trip Information
Name:
Kettle Cove
Trip date: 
Tue, 2017-10-24 09:30
Town or city: 
Cape Elizabeth
Type of investigation: 
Species Survey
Ecosystem: 
Coastal
Watershed: 
Presumpscot
Time of low tide: 
Tue, 2017-10-24 08:26
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