Table 3. Characteristics of macroinvertebrates collected from three upland CDFs in the Great Lakes area

ERDC TN-DOER-C22

September 2001

Table 3

Characteristics of macroinvertebrates collected from three upland CDFs in the

Great Lakes area

Location

Taxa Collected

Comments

Monroe CDF

Wet site

Insecta

Collembola

Coleoptera

Larvae and adults

Diptera

Larvae and adults

Arachnida

Araneae

Intermediate site

Insecta

Collembola

Diptera

Adults

Arachnida

Araneae

Dry site

Insecta

Collembola

Coleoptera

Larvae only

Diptera

Larvae and adults

Arachnida

Araneae

Manitowoc CDF

Wet site

Insecta

Collembola

Five species, large population

Coleoptera

Diptera

Larvae and adults

Arachnida

Araneae

Gastropoda

Snail

Intermediate site

Insecta

Collembola

Coleoptera

Adults

Diptera

Adults

Arachnida

Araneae

Isopoda

Large population

Dry site

Oligochaeta

Two earthworm species

Insecta

Collembola

Coleoptera

Larvae

Diptera

Adult

Arachnida Araneae

Isopoda

Large population

Chilopoda

Diplopoda

Snail

Gastropoda

Bayport Cell 6

Wet site

No animals found

Intermediate site

Arachnida Araneae

Gastropoda

One slug

Dry site

No animals found

in the expectation that potential toxic effects could be attributed to the presence of inorganics in the

dredged material. As bioassay organisms, common species that might occur at disturbed sites were

used, although they were not identified in the recent survey.

Dredged material was collected at the wettest site of the Monroe CDF. It was transported from

Michigan to the Environmental Laboratory, Vicksburg, MS, U.S. Army Engineer Research and