Main Title |
Ecology of Diatoms in Hardwater Habitats. |
Author |
Dod, John D. ;
|
CORP Author |
Iowa State Univ., Ames. Dept. of Botany and Plant Pathology. |
Year Published |
1971 |
Report Number |
EPA-FWQA-18050-DIE; 01608,; 18050-DIE-12/71 |
Stock Number |
PB-213 005 |
Additional Subjects |
( Diatoms ;
Ecology) ;
Taxonomy ;
Iowa ;
Water ;
Hardness ;
Pollen ;
Peat ;
Swamps ;
Lakes ;
Rivers ;
Streams ;
Ponds ;
Water pollution ;
Indicator species ;
Algae ;
Paleobotany ;
Eutrophication
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB-213 005 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
65p |
Abstract |
Diatoms comprise the major group of algae in Iowa waters. Their ecological significance, important in pollution evaluation studies, cannot be fully appreciated without a thorough knowledge of their taxonomy. A scale for abundance rating was used giving at least a rough estimate if data permitted. The names of 50 diatom genera occurring in Iowa are listed and for each genus, the number of taxa in the master list and the number in the 'more common' list are presented. A pollen analysis is tabulated; the samples in this analysis extended through 35 ft. of sediment to the postglacial interface at Little Miller's Bay, Lake West Okoboji. Dating was conducted by the radiocarbon technique for samples taken between 34 ft. and 35 ft. in the sediment core. Since this level had the maximum spruce pollen concentration and the pollen percentage decreased progressively above this level, it was considered as the postglacial interface. Some interesting problems lie in consideration of those diatoms which have disappeared from the original lake flora and those which have become common only since the middle of the postglacial period. |
Availability Notes |
Paper copy available from GPO $0.65 as EPI.16:18050DIE12/71. |
NTIS Title Notes |
Water pollution control research series. |
PUB Date Free Form |
Dec 71, |
Category Codes |
6C; 6F; 57C; 57H |
NTIS Prices |
PC-GPO/MF A01-NTIS |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
326533639 |
Origin |
NTIS |
Type |
CAT |