Page 3
Introduction
Species to Watch
Species by Taxon
Complete Species List


Introduced Species in Oregon's Estuaries by Taxon

While large, common species are typically well studied,  microscopic and rare species are not. For many species, we lack data on their original geographic distribution and thus cannot determine whether they are native or introduced. The term "cryptogenic" is used for these species of unknown origin. Sixty six introduced and over 33 cryptogenic species have been documented by James T. Carlton for Coos Bay. Those found in other Oregon estuaries are indicated in blue.

Taxon
# 
Introduced
Species
#
Cryptogenic
Species
 All Species 
Diatoms
1
many
  1+ many  
Algae
1
5
6
Sea grass
1
 
1
Atlantic cord grass
2
 
2
Marsh Plants
4
  
4
Protozoans
 
5
5
Sponges, Porifera
2
1
3
Coelenterates
 
 
  
    anemonies
2
 1
3
    hydroids
3
 3
6
bryozoans
8
1
9
Entoprocts
1
 
1
Flatworms  
3
3
Nematodes  
2
2
Nemerteans
 
1 
1 
Annelids      
    ologochaetes
2
 
2
    polychaetes
5 + 2
4
9
Molluscs
 
 
 
    bivalves
6 + 1
 
6
    gastropods
3 + 2
1
4
Crustaceans
 
 
 
    amphipods
8 + 2
2
9
    isopods
3
0
3
    copepods
2 + 1
2
4
    barnacles
1
 
1
    shrimp
1 
 
1
    crabs
2
 
2
    other
2 + 1
 2
4
Arachnids (mite)  
1
1
Tunicates
5
 
5
Fish
3
 
3
       
TOTAL
 66 + 11
33 
99 + 11 

 
 

Introduction
Species to Watch
Species by Taxon
Complete Species List