Synthèse des connaissances sur les aspects physiques et chimiques de l'eau et des sédiments du secteur d'étude Trois-Rivières-Bécancour : rapport technique, zones d'intervention prioritaire 12 et 13 PDF Download

Author: Pelletier, Marc
Publisher: [Québec] : Centre Saint-Laurent
ISBN: 9780662827726
Category :
Languages : fr
Pages : 170

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Author: Thomas F. Nalepa
Publisher: CRC Press
ISBN: 9780873716963
Category : Science
Languages : en
Pages : 848

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The introduction and rapid spread of the zebra mussel in North American waters has caused great concern among industrial and recreational users of these waters. This bivalve mollusk is a biofouler that attaches to any firm substrate (e.g. rocks, piers, water intake pipes, boat hulls) and has already created significant problems for raw water users such as water treatment plants and power plants. Zebra Mussels: Biology, Impacts and Control provides essential information regarding the biology of the zebra mussel in North America and Europe, presents case studies of environmental and industrial impacts, and outlines control strategies. Summary articles detail its life history, origins, and morphology. The book also examines techniques used to culture and maintain this organism in the laboratory. Thirty-two color plates illustrate some of the dramatic problems created by the explosive population growth of this species. Zebra Mussels: Biology, Impacts, and Control is an important resource for ecologists, conservationists, environmental consultants, water quality engineers, regulatory officials, power utilities, and libraries.

Author: Centre Saint-Laurent
Publisher: [Montréal] : Centre Saint-Laurent
ISBN: 9780662826101
Category :
Languages : fr
Pages : 135

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Author: Centre Saint-Laurent
Publisher: [Montréal] : Centre Saint-Laurent
ISBN: 9780662836971
Category :
Languages : fr
Pages : 145

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Author: Dietrich Neumann
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 288

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Author: Simon A. Levin
Publisher: Springer Science & Business Media
ISBN: 1461235200
Category : Science
Languages : en
Pages : 550

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Ecotoxicology is the science that seeks to predict the impacts of chemi cals upon ecosystems. This involves describing and predicting ecological changes ensuing from a variety of human activities that involve release of xenobiotic and other chemicals to the environment. A fundamental principle of ecotoxicology is embodied in the notion of change. Ecosystems themselves are constantly changing due to natural processes, and it is a challenge to distinguish the effects of anthropogenic activities against this background of fluctuations in the natural world. With the frustratingly large, diverse, and ever-emerging sphere of envi ronmental problems that ecotoxicology must address, the approaches to individual problems also must vary. In part, as a consequence, there is no established protocol for application of the science to environmental prob lem-solving. The conceptual and methodological bases for ecotoxicology are, how ever, in their infancy, and thus still growing with new experiences. In deed, the only robust generalization for research on different ecosystems and different chemical stresses seems to be a recognition of the necessity of an ecosystem perspective as focus for assessment. This ecosystem basis for ecotoxicology was the major theme of a previous pUblication by the Ecosystems Research Center at Cornell University, a special issue of Environmental Management (Levin et al. 1984). With that effort, we also recognized an additional necessity: there should be a continued develop ment of methods and expanded recognition of issues for ecotoxicology and for the associated endeavor of environmental management.

Author: J.M. Hellawell
Publisher: Springer Science & Business Media
ISBN: 9400943156
Category : Science
Languages : en
Pages : 437

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The preface of a book often provides a convenient place in which the author can tender his apologies for any inadequacies and affords him the facility to excuse himself by reminding the reader that his art is long but life, or at least the portion of it in which he has the opportunity for writing books, is short. I, too, am deeply conscious that I have undertaken a task which I could not hope to complete to my own satisfaction but I offer, in self defence, the observation that, inadequate though it is, there is no other book extant, so far as I am aware, which provides the information contained herein within the covers of a single volume. Often during the last decade, in discharging my responsibilities for the environmental aspects of the water authority's operations and works, I should have been deeply grateful to have had access to a compendium such as this. The lack of a convenient source of data made me aware of the need which I have attempted to fill and in doing so I have drawn on my experiences of the kinds of problem which are presented to biologists in the water industry. The maxim 'half a loaf is better than none' seems particularly apt in this context.

Author: Marc Pelletier
Publisher:
ISBN: 9780662829638
Category : Sediments (Geology)
Languages : fr
Pages : 157

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Author: Centre Saint-Laurent
Publisher: [Montréal] : Centre Saint-Laurent
ISBN:
Category :
Languages : fr
Pages : 151

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Author:
Publisher:
ISBN: 9780662801177
Category :
Languages : fr
Pages : 162

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