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Droughts are a major hazard to both natural and human-dominatedenvironments and those, especially of long duration and highintensity, can be highly damaging and leave long-lasting effects.This book describes the climatic conditions that give rise todroughts, and their various forms and chief attributes. Pastdroughts are described including those that had severe impacts onhuman societies. As a disturbance, droughts can be thought of as"ramps" in that they usually build slowly and take timeto become evident. As precipitation is reduced, flows fromcatchments into aquatic systems decline. As water…mehr

Produktbeschreibung
Droughts are a major hazard to both natural and human-dominatedenvironments and those, especially of long duration and highintensity, can be highly damaging and leave long-lasting effects.This book describes the climatic conditions that give rise todroughts, and their various forms and chief attributes. Pastdroughts are described including those that had severe impacts onhuman societies. As a disturbance, droughts can be thought of as"ramps" in that they usually build slowly and take timeto become evident. As precipitation is reduced, flows fromcatchments into aquatic systems decline. As water declines in waterbodies, ecological processes are changed and the biota can bedrastically reduced, though species and populations may survive byusing refuges. Recovery from drought varies in both rates andin degrees of completeness and may be a function of both refugeavailability and connectivity. For the first time, this book reviews the available ratherscattered literature on the impacts of drought on the flora, faunaand ecological processes of aquatic ecosystems ranging from smallponds to lakes and from streams to estuaries. The effects ofdrought on the biota of standing waters and flowing waters and oftemporary waters and perennial systems are described and compared.In addition, the ways in which human activity can exacerbatedroughts are outlined. In many parts of the world especially in themid latitudes, global warming may result in increases in theduration and intensity of droughts. Drought and Aquatic Ecosystems is essential reading forfreshwater ecologists, water resource managers and advancedstudents.

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  • Produktdetails
  • Verlag: John Wiley & Sons
  • Seitenzahl: 400
  • Erscheinungstermin: 12. Mai 2011
  • Englisch
  • ISBN-13: 9781444341782
  • Artikelnr.: 38306677
Autorenporträt
Philip "Sam" Lake is an Emeritus Professor in the School of Biological Sciences and a Fellow of the Australian Centre for Biodiversity at Monash University, Melbourne, Australia. Much of his research has focussed on the effects that both natural disturbances (e.g. floods, droughts) and human-generated ones (e.g. pollution, catchment land-use change) have on the biota of freshwater systems. Recently, he has also been investigating the ecological processes involved in the restoration of degraded flowing waters.