Download or read book An Ecological Framework for Marine Fishery Investigations written by J. F. Caddy and published by Food & Agriculture Org.. This book was released on 1986 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: The text is intended as supplementary reading for fisheries workers, especially in developing countries, who do not always have ready access to current literature on applied marine ecology. An attempt is made to develop a wide range of concepts in a form that will hopefully encourage their incorporation into a practical, decision-making context. The food web and associated trophic interactions form the principal theme, in an approach that gives equal emphasis to qualitative, as well as the less easily measured quantitative considerations. An attempt is made to illustrate the consequences of the aggregated nature of much of marine production, as well as the subsequent dispersal of production in space and time, and how these processes affect the potential for economic harvest of commercial components of the ecosystem. Separate sections touch on environmental influences on production, relevant spatial and temporal scales for ecosystem analysis, life history strategies, diversity and stability, the concepts of the ecological niche, the community and the assemblage, and outline some first steps towards quantifiying production in marine ecosystems. Different approaches to representing trophic and other interactions are discussed, with examples from the literature. Reference is made to several ecological subsystems, in order to illustrate the main concepts presented. These include the mangrove ecosystem, the arcto-boreal macrophyte community, a mediterranean demersal fish assemblage, and the oceanic ecosystem associated with high seas tuna stocks. In practical terms, it is concluded that the first and simplest approach to multispecies resource management is not necessarily the manipulation of individual food web components, but the identification, mapping and conservation of critical habitats, especially centres of local production, and their associated ecological dissipation structures.

Download or read book FAO Fisheries Technical Paper written by and published by . This book was released on 1998 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hotspots Revisited written by Russell A. Mittermeier and published by Conservation International. This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the results of the biodiversity hotspots - those discrete, biogeographic regions that are known to hold at least 1,500 plants as endemics and that have lost at least 70% of their primary native vegetation.

Download or read book Palaeobiology II written by Derek E. G. Briggs and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: Palaeobiology: A Synthesis was widely acclaimed both for its content and production quality. Ten years on, Derek Briggs and Peter Crowther have once again brought together over 150 leading authorities from around the world to produce Palaeobiology II. Using the same successful formula, the content is arranged as a series of concise articles, taking a thematic approach to the subject, rather than treating the various fossil groups systematically. This entirely new book, with its diversity of new topics and over 100 new contributors, reflects the exciting developments in the field, including accounts of spectacular newly discovered fossils, and embraces data from other disciplines such as astrobiology, geochemistry and genetics. Palaeobiology II will be an invaluable resource, not only for palaeontologists, but also for students and researchers in other branches of the earth and life sciences. Written by an international team of recognised authorities in the field. Content is concise but informative. Demonstrates how palaeobiological studies are at the heart of a range of scientific themes.

Download or read book Evolution of Fossil Ecosystems written by Paul Selden and published by CRC Press. This book was released on 2012-03-15 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evolution of Fossil Ecosystems describes all of the main Fossil Lagerstätten (sites of exceptional fossil preservation) from around the world in a chronological order. It covers the history of research, stratigraphy and taphonomy, main faunal and floral elements, and the palaeoecology of each site and gives a comparison with coeval sites around the w

Download or read book Transboundary Conservation written by Russell A. Mittermeier and published by Cemex Books on Nature. This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following in the footsteps of Hotspots, Wilderness, Wildlife Spectacles, and Hotspots Revisited, Transboundary Conservation is an essential resource for all those concerned about the future of our environment.

Download or read book Precambrian of the Southern Hemisphere written by D.R. Hunter and published by Elsevier. This book was released on 1981-01-01 with total page 890 pages. Available in PDF, EPUB and Kindle. Book excerpt: Precambrian of the Southern Hemisphere

Download or read book The Evolution of Plants written by K. J. Willis and published by OUP Oxford. This book was released on 2002-01-10 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a broad but provocative examination of the evolution of plants from the earliest forms of life to the development of our present flora. Taking a fresh, modern approach to a subject often treated very stuffily, the book incorporates many recent studies on the morphological evolution of plants, enlivens the subject with current research on ancient DNA and other biomolecular markers, and places plant evolution in the context of climate change and mass extinction. Also includes special Biome Maps, showing the flora on the Earth's surface at different geological ages. Written for a non-specialist audience.