The valley of the River Wye has long been famed for its natural beauty and the salmon stocks which the river supports. As one of the largest substantially unpol luted rivers in Southern Britain, the Wye, which rises in Wales and flows into England, is now of considerable significance in the strategy for conservation of freshwater habitats in the United Kingdom and is designated as a Site of Special Scientific 1 nterest by the Nature Conservancy Council (N. C. C. ). However, des pi te this scientific importance, published studies of the aquatic ecology of the river during the earlier decades of this century were principally restricted to the excellent series of articles and books on the salmon written by J. A. Hutton during the period 1912-47 and scattered records of the plants of the river banks. During this period the Fishery Board and successive organisations responsible for fisheries, also published reports describing general water quality and salmon catch statistics. In 1970 a survey was undertaken by the N. C. C. which provided the basis for the decision to give it special protected status. The Wye has been exploited as a major water source for Birmingham, through the development of reservoirs in the Elan Valley, since 1904. Further development of the capacity of the Elan catchment occurred in 1952 with the completion of the Claerwen Reservoir.
Die Inhaltsangabe kann sich auf eine andere Ausgabe dieses Titels beziehen.
Anbieter: Coch-y-Bonddu Books Ltd, MACHYNLLETH, Vereinigtes Königreich
ALL UK PARCELS SENT TRACKED! ALL OVERSEAS PARCELS SENT AIRMAIL, TRACKED! (S/hand, Hardcover, 1982). 2008 1st edition. 8vo (159 x 247mm). Ppxii,164. B/w photographs & illustrations, maps, charts and tables, bibliography. White and blue titles to blue boards, spine titled in dark blue. Boards slightly rubbed and used. Good-plus, lacks dust-wrapper. Front end-paper inscribed by the author, "with best wishes, Ron Edwards". This volume is part of the Microbiographiae Biologicae Series. This series has its own ISBN number, 9061938813. Since 1904, tthe River Wye has been extensively tapped by reservoirs to supply Birmingham with water. Proposals to enlarge the Craig Goch reservoir "to provide storage to regulate the nautral flow" of the now depleted Wye, triggered the realisation that the ecology of the Wye was not sufficiently understood. This book provides a digest of research on the River Wye to time of publication. Chapters include: Geology, land-use and hydrology; Water quality of the river itself and the Elan Valley reservoirs; Plants; Macroinvertebrates; Fish - shad, chub, dace, roach, pike, grayling, bullhead, brown trout and salmon; Birds and mammals. The future - land use changes, water resource developments, effects of flow changes, effects of storage, general conclusions. Appendices include: List of pteridophyte and plant species found on the Wye and four of its major tributaries; List of lichen and bryophyte species on the Wye and four major tributaries; Macroinvertebrates in Wye catchment; Flight periods of adult insects collected at Newbridge-on-Wye; Species seen on the Wye Survey. . Artikel-Nr. 64965
Anzahl: 1 verfügbar
Anbieter: Antiquariaat Schot, Hendrik-Ido-Ambacht, Niederlande
164 p. Hardcover (In good condition.). Artikel-Nr. 04824
Anzahl: 1 verfügbar