Author: Eugene F. StoermerPublisher:
ISBN:
Category : Diatomaceae, Fossil
Languages : en
Pages : 428
Book Description
Post-pleistocene Diatoms from Lake West Okoboji, Iowa
Author: Eugene F. StoermerPublisher:
ISBN:
Category : Diatomaceae, Fossil
Languages : en
Pages : 428
Book Description
The Ecology of Diatoms in Hardwater Habitats
Author: John Durrance DoddPublisher:
ISBN:
Category : Diatoms
Languages : en
Pages : 80
Book Description
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.
Dredging on the Missouri River Oxbow Lakes
Author: United States. Congress. Senate. Committee on Public Works. Subcommittee on Water ResourcesPublisher:
ISBN:
Category : Manawa, Lake (Iowa)
Languages : en
Pages : 232
Book Description
Geological Survey Bulletin
Author: Hearings, Reports and Prints of the Senate Committee on Public Works
Author: United States. Congress. Senate. Committee on Public WorksPublisher:
ISBN:
Category : Legislative hearings
Languages : en
Pages : 296
Book Description
Water Pollution Control Research and Training Grants
Author: Diatoms of North America
Author: Dermot AntoniadesPublisher: Gantner Publishing
ISBN:
Category : Nature
Languages : en
Pages : 664
Book Description
An introduction to Ellef Ringnes Island, Prince Patrick Islandand Northern Ellesmere Island. From the preface This project was initiated in 1998 with the development of a surface diatomcalibration set for selected regions from the Arctic Islands.Under the study surface sediments, mosses,rock and otheravailable habitats were studied from 91 ponds and lakes.It became clear that the diatoms observed were new or undocumented. Detailed taxonomic studies were done at the Canadian Museum of Nature using SEM generated images andthe extensive Library. A must have for research in the Arctic
Post-pleistocene Diatom Assemblages in New England Lake Sediments
Author: John Walter ShermanPublisher:
ISBN:
Category : Diatoms
Languages : en
Pages : 624
Book Description
Proceedings of The Academy of Natural Sciences (Vol. 151, 2001)
Author: Publisher: Academy of Natural Sciences
ISBN: 9781437955507
Category :
Languages : en
Pages : 160
Book Description
Proceedings of The Academy of Natural Sciences (Vol. 148, 31 October 1997)
Author: Publisher: Academy of Natural Sciences
ISBN: 9781437955477
Category :
Languages : en
Pages : 304
Book Description