Danvers, MA Species Diversity 1998,
2000, 2002, 2007-2016
Sum of Mummichog
Sum of Silverside
Sum of Shrimp
Sum of Jonah Crab
Sum of Mud snail
Sum of Comb Jelly
Sum of American Eel
Danvers upstream
120
Axis Title
100
80
Shrimp
60
Green Crab
40
Mud Snail
20
Comb Jelly
0
Danvers downstream
120
Axis Title
100
80
Shrimp
60
Green Crab
40
Mud Snail
20
0
Comb Jelly
Danvers Site Percent Frequency of
Species 1998, 2000, 2002, 2007-2016
100%
80%
60%
40%
20%
0%
Average number of mud snails vs . year and
location, Danvers, MA
70
60
Axis Title
50
40
30
20
10
0
downstream
upstream
Average number of Green Crabs vs year
and location, Danvers, MA
25
Axis Title
20
15
downstream
10
upstream
5
0
Average number of Shrimp vs. year and
location Danvers, MA
120
Axis Title
100
80
downstream
upstream
60
40
20
0
Average number of Comb Jellies vs.
year and location Danvers, MA
60
Axis Title
50
40
30
downstream
20
upstream
10
0