Advances in Ecology and Environmental Sciences PDF Download
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Author: P. C. Mishra
Publisher: APH Publishing
ISBN: 9788170246763
Category : Science
Languages : en
Pages : 684
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Book Description
Author: P. C. Mishra
Publisher: APH Publishing
ISBN: 9788170246763
Category : Science
Languages : en
Pages : 684
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Book Description
Author: Clive A. Edwards
Publisher: CRC Press
ISBN: 1420039717
Category : Nature
Languages : en
Pages : 458
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Book Description
Earthworm Ecology, Second Edition updates the most comprehensive work available on earthworm ecology with extensive revisions of the original chapters. New chapters analyze the history of earthworm research, the importance of earthworms as representatives of soil fauna and how they affect plant growth, the effects of the invasion of exotic earthworms into North America and other regions, and vermiculture and vermicomposting in Europe.This well-illustrated, expansive study examines the important and often overlooked impact earthworms have on the environment. It discusses the impact of climate, soil properties, predation, disease and parasitism, and competition upon earthworm ecology.
Author: R. Hengeveld
Publisher: Springer Science & Business Media
ISBN: 9780412314704
Category : Nature
Languages : en
Pages : 186
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Book Description
This study of biological invasions introduces dynamic concepts into biogeography and spatial concepts into ecology. By using mathematical models from epidemiology and human geography generalizations can be made and it is shown that apparently static species ranges contain dynamic internal parameters.
Author: P. Müller
Publisher: Springer Science & Business Media
ISBN: 9401023271
Category : Science
Languages : en
Pages : 214
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Book Description
Zoogeography aims to explain the structure, function and history of the geo graphical ranges of animals. The absence or presence of a species in a given place has ecological as well as historical causes. It is therefore a mistake to suppose that reconstructing the phylogenetic connections of a taxon will by itself give a definite picture of how its range originated. A purely ecological interpretation of the range could be equally misleading if it did not take into account the population-genetic structure underlying the geographical range. Phylogenetic systematics, population genetics, autecology and synecology have all their own methods, none of which can be substituted for another, without which a range cannot be studied or interpreted. The present book covers only certain aspects of the wide field of zoogeo graphy. These are in the form in which they were crystallised in the course of innumerable discussions with my teachers, my colleagues at home and abroad and my fellow workers, postgraduates and students at Saarbriicken, as well as in the zoogeographical part of may basic lectures on biogeography for the year 1973-1974. The chief emphasis is laid on the genetic and ecological macro structure of the biosphere as an arena for range structures and range dynamics, on urban ecosystems, which have hitherto been grossly neglected, and on the most recent history of ranges (the dispersal centre concept). The marine and fresh-water biocycles, on the other hand, have been dealt only briefly.
Author: Kevin J. Gaston
Publisher: Oxford University Press, USA
ISBN: 0198526407
Category : Science
Languages : en
Pages : 278
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Book Description
A synthesis of present understanding of the structure of the geographic ranges of species, which is a core issue in ecology and biogeography with implications for many of the environmental issues presently facing humankind.
Author: United States. Forest Service
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 604
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Book Description
Author:
Publisher:
ISBN:
Category : Animal ecology
Languages : en
Pages : 32
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Book Description
Author: Tim M. Berra
Publisher: University of Chicago Press
ISBN: 0226044432
Category : Science
Languages : en
Pages : 645
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Book Description
With more than 29,000 species, fishes are the most diverse group of vertebrates on the planet. Of that number, more than 12,000 species are found in freshwater ecosystems, which occupy less than 1 percent of the Earth’s surface and contain only 2.4 percent of plant and animal species. But, on a hectare-for-hectare basis, freshwater ecosystems are richer in species than more extensive terrestrial and marine habitats. Examination of the distribution patterns of fishes in these fresh waters reveals much about continental movements and climate changes and has long been critical to biogeographical studies and research in ecology and evolution. Tim Berra’s seminal resource, Freshwater Fish Distribution,maps the 169 fish families that swim in fresh water around the world. Each family account includes the class, subclass, and order; a pronunciation guide to the family name; life cycle information; and interesting natural history facts. Each account is illustrated, many with historical nineteenth-century woodcuts. Now available in paperback, this heavily cited work in ichthyology and biogeography will serve as a reference for students, a research support for professors, and a helpful guide to tropical fish hobbyists and anglers.
Author: R.L. Arya
Publisher: Scientific Publishers - Competition Tutor
ISBN: 9386347636
Category : Technology & Engineering
Languages : en
Pages : 680
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Book Description
“Indira’s Objective Agricultural Biotechnology” for competitive exams in agricultural biotechnology discipline contains 23 chapters covering all related disciplines. Model test papers and previous years solved papers have been given due importance at the end of the book present a general guidance of examination pattern. Each chapters contains multiple choice questions covering every aspects and total about 12000 objective questions with multiple choices have been framed and arranged sequentially. This book is primarily intended to serve as a ready reference for those appearing in competitive examinations of undergraduate, post graduate, M. Phil and doctorate programmes in Biotechnology of various Universities. The chapters are chosen in view to cover the course contents of competitive examinations like IAS, IFS, ARS, PCS, Banking, SLETs, UGC-NET and others.
Author: J.C. Briggs
Publisher: Elsevier
ISBN: 0080532543
Category : Science
Languages : en
Pages : 473
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Book Description
This book significantly expands the coverage of this subject given by its predecessor Biogeography and Plate Tectonics (1987). Global Biogeography traces global changes in geography and biology from the Precambrian to the Recent (with worldwide coverage in chronological order); examines the evolutionary effects of the major extinctions, and discusses contemporary biogeographic regions within the context of their historic origins. It is now apparent that the biotas of the various biogeographical regions have had, and still maintain, a dynamic relationship with one another; much more than was previously thought. This is shown to be true for all three of the earth's primary habitats; marine, terrestrial and freshwater (as is clearly demonstrated in this volume).The book is splendidly illustrated with 122 text figures, an extensive bibliography, index, together with a set of biogeographic maps illustrating continental and terrain outlines from the mid-Cambrian to the Recent. University students (both advanced undergraduate and graduate level) will find it an excellent text book. For professionals in Biogeography this is a convenient reference work.
