Aquatic Birds in the Trophic Web of Lakes PDF Download
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Author: Joseph J. Kerekes
Publisher: Springer Science & Business Media
ISBN: 9401111286
Category : Science
Languages : en
Pages : 513
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Book Description
Birds are an integral part of most freshwater ecosystems (lakes, rivers, wetlands) but their role in the trophic dynamics of these water bodies has often been overlooked. As a conspicuous part of the biota of water bodies, aquatic birds are indicators of their trophic state both in terms of species composition (quality) as well as occupancy and breeding (quantity). Birds may also influence the trophic state of a water body by importing nutrients (.e.g. resident or migrating birds feeding on adjacent watersheds or the sea). Because of anthropogenic activities, predation or their mobility, birds may not utilize otherwise suitable aquatic habitat. These factors complicate the relationship between aquatic bird production and the trophic status of habitats. As a consequence, the role of aquatic birds in freshwater ecosystems has usually been ignored. This volume contains a wide range of papers selected from those presented at the symposium and reviewed.
Author: Joseph J. Kerekes
Publisher: Springer Science & Business Media
ISBN: 9401111286
Category : Science
Languages : en
Pages : 513
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Book Description
Birds are an integral part of most freshwater ecosystems (lakes, rivers, wetlands) but their role in the trophic dynamics of these water bodies has often been overlooked. As a conspicuous part of the biota of water bodies, aquatic birds are indicators of their trophic state both in terms of species composition (quality) as well as occupancy and breeding (quantity). Birds may also influence the trophic state of a water body by importing nutrients (.e.g. resident or migrating birds feeding on adjacent watersheds or the sea). Because of anthropogenic activities, predation or their mobility, birds may not utilize otherwise suitable aquatic habitat. These factors complicate the relationship between aquatic bird production and the trophic status of habitats. As a consequence, the role of aquatic birds in freshwater ecosystems has usually been ignored. This volume contains a wide range of papers selected from those presented at the symposium and reviewed.
Author: Erik Jeppesen
Publisher: Springer Science & Business Media
ISBN: 1461206952
Category : Science
Languages : en
Pages : 442
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Book Description
The rapid growth of the discipline of aquatic ecology has been driven both by scientific interest in the complexities of aquatic ecosystems and by their enormous environmental importance and sensitivity. This book focuses on the remarkably diverse roles played by underwater plants, and is divided into three parts: 10 thematic chapters, followed by 18 case studies, and rounded off by three integrative chapters. The topics range from macrophytes as fish food to macrophytes as mollusc and microbe habitat, making this of interest to aquatic ecologists as well as limnologists, ecosystem ecologists, microbial ecologists, fish biologists, and environmental managers.
Author: Janet Kear
Publisher:
ISBN: 9780198610090
Category : Nature
Languages : en
Pages : 484
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Book Description
Author: Alan R. Hanson
Publisher: Springer Science & Business Media
ISBN: 1402055560
Category : Science
Languages : en
Pages : 345
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Book Description
Long-term population monitoring is an important tool in our investigations of the role waterbirds play in their environment. This book is international in scope and presents information on species as diverse as the Common Loon, Harlequin Duck, and Semi-Palmated Sandpiper, and habitat in locations ranging from Iceland to Japan. Papers presented in this volume further our understanding of the important role that limnology plays in determining habitat suitability for waterbirds.
Author: Walter K. Dodds
Publisher: Academic Press
ISBN: 0080884776
Category : Science
Languages : en
Pages : 840
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Book Description
Freshwater Ecology, Second Edition, is a broad, up-to-date treatment of everything from the basic chemical and physical properties of water to advanced unifying concepts of the community ecology and ecosystem relationships as found in continental waters.With 40% new and expanded coverage, this text covers applied and basic aspects of limnology, now with more emphasis on wetlands and reservoirs than in the previous edition. It features 80 new and updated figures, including a section of color plates, and 500 new and updated references. The authors take a synthetic approach to ecological problems, teaching students how to handle the challenges faced by contemporary aquatic scientists.This text is designed for undergraduate students taking courses in Freshwater Ecology and Limnology; and introductory graduate students taking courses in Freshwater Ecology and Limnology. - Expanded revision of Dodds' successful text. - New boxed sections provide more advanced material within the introductory, modular format of the first edition. - Basic scientific concepts and environmental applications featured throughout. - Added coverage of climate change, ecosystem function, hypertrophic habitats and secondary production. - Expanded coverage of physical limnology, groundwater and wetland habitats. - Expanded coverage of the toxic effects of pharmaceuticals and endocrine disrupters as freshwater pollutants - More on aquatic invertebrates, with more images and pictures of a broader range of organisms - Expanded coverage of the functional roles of filterer feeding, scraping, and shredding organisms, and a new section on omnivores. - Expanded appendix on standard statistical techniques. - Supporting website with figures and tables - http://www.elsevierdirect.com/companion.jsp?ISBN=9780123747242
Author: Abdul Jamil Urfi
Publisher: Pelagic Publishing Ltd
ISBN: 1784274402
Category : Science
Languages : en
Pages : 210
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Book Description
A charismatic and arresting bird, the Painted Stork inhabits the plains and wetlands of India and Southeast Asia. This near-threatened species provides a good model through which to explore a variety of ecology and conservation issues. As a colonial nester, it is also useful for considering questions related to evolution and the development of avian coloniality. The Painted Stork sometimes nests opportunistically in the middle of large cities – the Delhi Zoo colony, for instance, has been active since 1960. This offers a splendid opportunity to study the species at close range, as attested by this book's lively photographic component. The Painted Stork is an important indicator of its wetland habitats, which themselves are highly threatened. Since environmental toxins, particularly organochlorine pesticides, travel rapidly along aquatic food chains, the study of piscivorous birds like the Painted Stork assumes special significance. Equally vulnerable today are the nesting colonies, located in marshes, village reservoirs and the wider countryside, including in urban settings. Perhaps because their natural nesting areas are becoming scarce due to habitat loss, colonial waterbirds look for suitable sites in parks and gardens. Hence, the behaviour of this species reflects changes occurring in its environment. Birds also help us monitor the effects of global climate change, and one of the most significant dimensions of the Painted Stork is its dependence upon the monsoon. How exactly do these seasonal rains govern the food cycles in wetlands? And what happens when the monsoon fails? Covering all aspects of Painted Stork ecology, behaviour, conservation and its relationship with humans, this accessible monograph contains a wealth of new insights.
Author: Conor W. O'Brien
Publisher: Merrion Press
ISBN: 1785373072
Category : Nature
Languages : en
Pages : 155
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Book Description
Twelve birds. One country. A wild Ireland waiting to be discovered. In Ireland Through Birds, Conor O’Brien takes the reader on an ornithological adventure around Ireland in search of twelve of our rarest and most elusive birds. Along the journey the author explores every kind of landscape and habitat our island has to offer across all four seasons, from the remote isles of Donegal to the rugged mountains of Kerry and urban parks of Dublin. Through it all, O’Brien is enchanted by calling corncrakes, mesmerised by hunting harriers, and chased by angry skuas. It’s a journey through a staggering array of landscapes that’ll bring the reader face to face with the rich history and stunning wildlife to be savoured right on our doorstep. It explores the stories of the remarkable birds that live here: the genius of the jay, the sublime mimicry of the cuckoo, the nocturnal prowess of the barn owl, while paying a moving,poetic tribute to our natural heritage – and a warning about the threats that face it. Ireland Through Birds is a unique blend of natural history and travelogue, making it a great read for anyone with an interest in Ireland’s natural world.
Author: Warwick F. Vincent
Publisher: Oxford University Press
ISBN: 0199213887
Category : Mathematics
Languages : en
Pages : 363
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Book Description
This book provides an overview of the ecology of high latitude lakes, rivers and glacial environments in both the North and South polar regions. It describes each ecosystem type, the remarkable aquatic life that thrives in these extreme habitats, and the similarities and differences between Arctic and Antarctic waters.
Author: J. Alexander Burnett
Publisher: UBC Press
ISBN: 0774842520
Category : Business & Economics
Languages : en
Pages : 345
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Book Description
A Passion for Wildlife chronicles the history of the Canadian Wildlife Service and the evolution of Canadian wildlife policy over its first half century. It presents the exploits and accomplishments of a group of men and women whose dedication to the ideals of science, conservation, and a shared vision of Canada as a country that treasures its natural heritage has earned them the respect of their profession around the world.
Author: Paul Johnsgard
Publisher: Lulu.com
ISBN: 1609621069
Category : Nature
Languages : en
Pages : 258
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Book Description
The 21 species of sea ducks are one of the larger subgroups (Tribe Mergini) of the waterfowl family Anatidae, and the 16 species (one historically extinct) that are native to North America represent the largest number to be found on any continent, and also the largest number of endemic sea duck species native to any continent. Although generally not important as game birds, the sea ducks include some economically important birds such as the eiders, the basis for the Arctic eiderdown industry and a historically important food source for some Native American cultures. They also include what is probably the most northerly breeding species of all waterfowl and an icon of Arctic bird life, the long-tailed duck. The sea ducks also include species having some of the most complex and diverse pair-forming postural and acoustic displays of all waterfowl (goldeneyes and bufflehead), and some of the deepest diving species of all waterfowl (scoters and long-tailed duck). Sea ducks are highly prone to population disasters caused by oil spills and other water contaminants and, like other seabirds, are among the first bird groups that are being affected by current global warming trends in polar regions. This book is an effort to summarize succinctly our current knowledge of sea duck biology and to provide a convenient survey of the vast technical literature on the group, with over 900 literature references. It also includes 90,000 words of text (more than 40 percent of which is new), 15 updated range maps, 11 black & white and 20 color photographs, over 30 ink drawings, and nearly 150 sketches. Lastly, the North American sea ducks include the now extinct Labrador duck, the only northern hemisphere waterfowl species to have gone extinct in modern times. I have gratefully reprinted a Labrador duck watercolor by Sir Peter Scott. Considering recent population crashes in other sea ducks, such as the Steller's eider and spectacled eider, it should also offer a sobering reminder of the fragility of our natural world and its inhabitants, including us.
