Author: D. E. MaertzPublisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 80
Book Description
Water-resources Investigations in Wisconsin
Author: D. E. MaertzPublisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 80
Book Description
Water-resources Investigations Report
Author: Microlog, Canadian Research Index
Author: Publisher:
ISBN:
Category : Canada
Languages : en
Pages : 1550
Book Description
An indexing, abstracting and document delivery service that covers current Canadian report literature of reference value from government and institutional sources.
Water Resources Data
Author: Water Quality Report of River Water Quality in the Minneapolis-St. Paul Metropolitan Area
Author: Metropolitan Waste Control Commission (Minn.). Quality Control DepartmentPublisher:
ISBN:
Category : Water quality
Languages : en
Pages : 32
Book Description
Nutrient and Suspended-sediment Concentrations and Loads and Benthic-invertebrate Data for Tributaries to the St. Croix River, Wisconsin and Minnesota, 1997-99
Author: Monthly Catalogue, United States Public Documents
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1048
Book Description
Water-resources-related Information for the St. Croix Reservation and Vicinity, Wisconsin
Author: David A. SaadPublisher:
ISBN:
Category : Water quality
Languages : en
Pages : 76
Book Description
Water-quality Assessment of Part of the Upper Mississippi River Basin, Minnesota and Wisconsin
Author: Ecology and Evolution of the Freshwater Mussels Unionoida
Author: G. BauerPublisher: Springer Science & Business Media
ISBN: 3642568696
Category : Science
Languages : en
Pages : 400
Book Description
All those who think that bivalves are boring are in the best company. Karl von Frisch is reported to have turned the pages more quickly in texts where bivalves were treated because, according to him, they literally lack any behaviour. The fact that they can filtrate huge amounts of water, burrow into the sedi ment, actively swim, drill holes into rocks and boats or detect shadows with the aid of pretty blue eyes located on the rim of their mantle obviously left v. Frisch unimpressed. Why, then, a book on the large freshwater mussels (Naiads or Unionoida), which on first sight are much less spectacular than the marine ones? The main reason is that they are keepers of secrets which they reveal only on close and careful inspection. This is not only true for the pearls some species produce and which over centuries have contributed to the treasures of bishops and kings, but particularly for their ecology: their life cycles are linked with those of fishes, some can occur in incredible densities and some can live for more than 100 years. Thus, the presence or absence of naiads in a lake or stream has manifold implications.