The Rivers of Wales

The Rivers of Wales PDF

Author: D. Dudley Williams

Publisher:

Published: 2009

Total Pages: 368

ISBN-13:

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"Situated on the western margin of Europe, Wales has been moulded by the erosional and depositional power of its fresh waters by virtue of high rainfall interacting with extensive regions of bedrock and post- Ice Age glacial debris. The result is a still evolving landscape rich in upland bogs, springs, mountain streams and lakes, rivers running through deeply eroded valleys, and large, lowland rivers meandering across wide floodplains into estuaries and the sea. Subsequent chapters bring together, for the first time, the combined expertise of a group of scientists whose intimate and collective knowledge of the Welsh aquatic landscape is unparalleled. The authors begin by describing the knowledge base of these important habitats, emphasising the structure and role of their plant, animal, and microbial communities. Upon this are built chapters that review the pioneering role of Welsh river studies in the development of running water science and, very poignantly, assess the high degree of human alteration of the principality's riverine ecosystems. These are followed by chapters that discuss the need for further scientific study, management, conservation, restoration and education so that future impacts on Welsh waters may be understood and minimised. Throughout the book flows the underlying theme that there has been and always will be a close link between water resources and the development of Welsh society."--Publisher's description.

The Welsh Rivers

The Welsh Rivers PDF

Author: Chris Sladden

Publisher:

Published: 2012-07-01

Total Pages: 324

ISBN-13: 9780951614730

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A comprehensive guidebook to canoeing and kayaking the rivers of Wales. Nearly all the rivers of the principality are covered, mostly from navigable source to sea or confluence. From lazy gentle tours suitable for families, to raging torrents and waterfalls, there are over 180 rivers and 2000 kilometres of paddling.

Rivers of Wales

Rivers of Wales PDF

Author: David Williams

Publisher: Graffeg

Published: 2011-05

Total Pages: 192

ISBN-13: 9781905582549

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This is a journey across the most prominent rivers in Wales, the Severn, Usk, Teifi, Towy, Dee, Wye, Taff and Teme. It concentrates on the importance of the waterways to Wales, including the landscape and wildlife that depend on them.

Rivers of Wales

Rivers of Wales PDF

Author: JIM. PERRIN

Publisher:

Published: 2022-03-15

Total Pages: 300

ISBN-13: 9781845278397

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The Rivers of Wales does exactly what it says on the tin in this book Jim Perrin introduces and revels in the nature of our rivers, writing from diverse perspectives. He looks at the geography, mythology, social history and natural history which exist as a result of the flowing waters. This is a celebration of Wales rivers and appeals to a broad readership.

Salmon at the Edge

Salmon at the Edge PDF

Author: Derek Mills

Publisher: John Wiley & Sons

Published: 2008-04-15

Total Pages: 320

ISBN-13: 0470995483

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Salmon at the Edge covers, in depth, the problems faced by wild Atlantic salmon and sea trout in estuaries and coastal zones, and in their early weeks at sea. The book also reflects the current precarious state of many migratory salmonid populations and the need for new approaches to a number of threats to these populations. Generated from papers given at the landmark Sixth Atlantic Salmon Symposium, held in Edinburgh, UK, Salmon at the Edge contains a huge wealth of information on such important topics as the impact of salmon farming, the behaviour of post-smolts in their early migration and their vulnerability to by-catch, and the use of nutrient enrichment and habitat enhancement to increase production of juvenile salmonids. With chapters written by internationally-known and respected authors, and including a message of support from His Royal Highness The Prince of Wales, this important volume is essential reading for all those involved with salmonid fishes, including fish biologists, fisheries scientists and managers, environmental, marine and freshwater scientists, and personnel involved in salmon aquaculture. Libraries in all universities and research establishments where these subjects are studied and taught should have copies on their shelves. The Sixth Atlantic Salmon Symposium, from which chapters in this book have been generated, was organised by The Atlantic Salmon Trust and The Atlantic Salmon Federation, and was published with the financial support of The Fishmongers’ Company and Scottish and Southern Energy. Derek Mills of The Atlantic Salmon Trust, Pitlochry, Perthshire, UK has many years of research, writing and editing experience in salmon biology and fisheries

Acid Waters in Wales

Acid Waters in Wales PDF

Author: R.W. Edwards

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 334

ISBN-13: 9400918941

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This book brings together research into the process of stream acidification and its impact on Welsh surface waters, carried out over the past decade or so. It is perhaps surprising that not until the 1980's was clear evidence of stream acidification assembled. In Wales, concerns over pollution had focused water quality sampling principally on the areas of traditional heavy industry and large urban popula tions served by inadequate sewerage systems and sewage disposal arrange ments. Mistakenly, it had been assumed that, with its prevailing westerly winds, Wales would receive precipitation substantially unpolluted by the industrial and urban emissions from Britain and mainland Europe. Assurance of the high quality of Welsh upland streams, the traditional nursery ground of salmonids, was eroded particularly by studies in the vicinity of Llyn Brianne reservoir in the catchment of the River Tywi of Central Wales. These demonstrated a clear correspondence between the biological quality and fisheries of streams in the catchment and aspects of stream chemistry, par ticularly pH, aluminium and calcium on the one hand, and catchment land use on the other. It is salutary to record that the first signals were of an inexplicable failure of the runs of migratory salmonids into the upper catchment, occupied by the Llyn Brianne reservoir and its influent streams, and the failure to restore the fishery by re-stocking with eggs and fry. Only then did the significance of the recent decline in some other upland lake and reservoir fisheries in Wales become apparent.

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