Science

Essential Fish Biology

Diversity, Structure, and Function

Author: Derek Burton,Margaret Burton

Publisher: Oxford University Press

ISBN: 0198785550

Category: Science

Page: 416

View: 4865

An introductory overview of the functional biology of fish and how that may be affected by the contrasting habitat conditions within the aquatic environment. It describes the recent advances in comparative animal physiology which have greatly influenced our understanding of fish function as well as generating questions that have yet to be resolved. Fish taxa represent the largest number of vertebrates, with over 25,000 extant species. However, much of our knowledge, apart from taxonomy and habitat descriptions, has been based on relatively few of these species, usually those which live in fresh water and/or are of commercial interest. Unfortunately there has also been a tendency to base interpretation of fish physiology on that of mammalian systems, as well as to rely on a few type species of fish. This accessible textbook will redress the balance by using examples of fish from a wide range of species and habitats, emphasizing diversity as well as recognizing shared attributes with other vertebrates.
Nature

Biodiversity Dynamics and Conservation

The Freshwater Fish of Tropical Africa

Author: C. Lévêque

Publisher: Cambridge University Press

ISBN: 9780521570336

Category: Nature

Page: 438

View: 5669

This is a comprehensive book on the biodiversity of one of the most diverse ecosystems known - tropical freshwater.
Technology & Engineering

Handbook of Fish Biology and Fisheries

Fisheries

Author: Paul J. B. Hart,John D. Reynolds

Publisher: John Wiley & Sons

ISBN: 0470693134

Category: Technology & Engineering

Page: 424

View: 7510

Recent decades have witnessed strong declines in fish stocks around the globe, amid growing concerns about the impact of fisheries on marine and freshwater biodiversity. Fisheries biologists and managers are therefore increasingly asking about aspects of ecology, behaviour, evolution and biodiversity that were traditionally studied by people working in very separate fields. This has highlighted the need to work more closely together, in order to help ensure future success both in management and conservation. The Handbook of Fish Biology and Fisheries has been written by an international team of scientists and practitioners, to provide an overview of the biology of freshwater and marine fish species together with the science that supports fisheries management and conservation. This volume, subtitled Fisheries, focuses on a wide range of topics, including the history of fisheries science, methods of capture, marketing, economics, major models used in stock assessments and forecasting, ecosystem impacts, marine protected areas and conservation. It builds on material in Volume 1, Fish Biology, which ranges from phylogenetics and biogeography to physiology, recruitment, life histories, genetics, foraging, reproductive behaviour and community ecology. Together, these books present the state of the art in our understanding of fish biology and fisheries and will serve as valuable references for undergraduates and graduates looking for a comprehensive source on a wide variety of topics in fisheries science. They will also be useful to researchers who need up-to-date reviews of topics that impinge on their fields, and decision makers who need to appreciate the scientific background for management and conservation of aquatic ecosystems. To order volume II, go to the box in the top right hand corner. Alternatively to order volume I, go to: http://www.blackwellpublishing.com/book.asp?ref=0632054123 or to order the 2 volume set, go to: http://www.blackwellpublishing.com/book.asp?ref=0632064838. Provides a unique overview of the study of fish biology and ecology, and the assessment and management of fish populations and ecosystems. The first volume concentrates on aspects of fish biology and ecology, both at the individual and population levels, whilst the second volume addresses the assessment and management of fish populations and ecosystems. Written by an international team of expert scientists and practitioners. An invaluable reference tool for both students, researchers and practitioners working in the fields of fish biology and fisheries.
Business & Economics

Our Forests, Our Future

Author: Emil Salim,Ola Ullsten,World Commission on Forests and Sustainable Development

Publisher: Cambridge University Press

ISBN: 9780521669566

Category: Business & Economics

Page: 205

View: 3586

A unique report of the current status and future survival of the world's forests compiled by an international independent commission.
Science

Das egoistische Gen

Mit einem Vorwort von Wolfgang Wickler

Author: Richard Dawkins

Publisher: Springer-Verlag

ISBN: 3642553915

Category: Science

Page: 489

View: 4513

p”Ein auch heute noch bedeutsamer Klassiker“ Daily Express Sind wir Marionetten unserer Gene? Nach Richard Dawkins ́ vor über 30 Jahren entworfener und heute noch immer provozierender These steuern und dirigieren unsere von Generation zu Generation weitergegebenen Gene uns, um sich selbst zu erhalten. Alle biologischen Organismen dienen somit vor allem dem Überleben und der Unsterblichkeit der Erbanlagen und sind letztlich nur die "Einweg-Behälter" der "egoistischen" Gene. Sind wir Menschen also unserem Gen-Schicksal hilflos ausgeliefert? Dawkins bestreitet dies und macht uns Hoffnung: Seiner Meinung nach sind wir nämlich die einzige Spezies mit der Chance, gegen ihr genetisches Schicksal anzukämpfen.
Nature

Der stumme Frühling

Author: Rachel Carson

Publisher: C.H.Beck

ISBN: 3406704220

Category: Nature

Page: 348

View: 8026

Der stumme Frühling erschien erstmals 1962. Der Titel bezieht sich auf das eingangs erzählte Märchen von der blühenden Stadt, in der sich eine seltsame, schleichende Seuche ausbreitet … Das spannend geschriebene Sachbuch wirkte bei seinem Erscheinen wie ein Alarmsignal und avancierte rasch zur Bibel der damals entstehendenÖkologie-Bewegung. ZumerstenMal wurde hier in eindringlichem Appell die Fragwürdigkeit des chemischen Pflanzenschutzes dargelegt. An einer Fülle von Tatsachen machte Rachel Carson seine schädlichen Auswirkungen auf die Natur und die Menschen deutlich. Ihre Warnungen haben seither nichts von ihrer Aktualität verloren.
Nature

Challenges for wildlife and fish

the old-growth ecosystem in managed forests : proceedings of the 1983 technical session of the Wildlife and Fish Ecology Working Group

Author: Society of American Foresters. Convention

Publisher: N.A

ISBN: N.A

Category: Nature

Page: N.A

View: 8920

Nature

Management of Freshwater Biodiversity

Crayfish as Bioindicators

Author: Julian Reynolds,Catherine Souty-Grosset

Publisher: Cambridge University Press

ISBN: 1139502166

Category: Nature

Page: N.A

View: 1971

Integrating research into freshwater biodiversity and the role of keystone species, this fascinating book presents freshwater crayfish as representatives of human-exacerbated threats to biodiversity and conservation. It uses examples from these and other large decapod invertebrates to explore how communities function and are controlled, alongside the implications of human demands and conflicts over limited resources, notably the severe impacts on biodiversity. The discussion is structured around three key topics – the present situation of crayfish in world freshwater ecosystems, the applications of science to conservation management and knowledge transfer for successful crayfish management. It outlines the historic exploitation of crayfish, addressing the problems caused by invasive alien forms and explaining the importance of correct identification when dealing with conservation issues. Offering a global perspective on freshwater systems, the book ultimately highlights how the conservation of such large and long-lived species will help protect ecosystem quality in the future.
Nature

Ecosystem Management

Adaptive, Community-Based Conservation

Author: Gary Meffe,Larry Nielsen,Richard L. Knight,Dennis Schenborn

Publisher: Island Press

ISBN: 1597267899

Category: Nature

Page: 336

View: 5785

Today's natural resource managers must be able to navigate among the complicated interactions and conflicting interests of diverse stakeholders and decisionmakers. Technical and scientific knowledge, though necessary, are not sufficient. Science is merely one component in a multifaceted world of decision making. And while the demands of resource management have changed greatly, natural resource education and textbooks have not. Until now. Ecosystem Management represents a different kind of textbook for a different kind of course. It offers a new and exciting approach that engages students in active problem solving by using detailed landscape scenarios that reflect the complex issues and conflicting interests that face today's resource managers and scientists. Focusing on the application of the sciences of ecology and conservation biology to real-world concerns, it emphasizes the intricate ecological, socioeconomic, and institutional matrix in which natural resource management functions, and illustrates how to be more effective in that challenging arena. Each chapter is rich with exercises to help facilitate problem-based learning. The main text is supplemented by boxes and figures that provide examples, perspectives, definitions, summaries, and learning tools, along with a variety of essays written by practitioners with on-the-ground experience in applying the principles of ecosystem management. Accompanying the textbook is an instructor's manual that provides a detailed overview of the book and specific guidance on designing a course around it. Ecosystem Management grew out of a training course developed and presented by the authors for the U.S. Fish and Wildlife Service at its National Training Center in Shepherdstown, West Virginia. In 20 offerings to more than 600 natural resource professionals, the authors learned a great deal about what is needed to function successfully as a professional resource manager. The book offers important insights and a unique perspective dervied from that invaluable experience.
Biography & Autobiography

Abenteuer am Amazonas und am Rio Negro

Author: Alfred Russel Wallace

Publisher: Kiepenheuer & Witsch

ISBN: 3462308076

Category: Biography & Autobiography

Page: 624

View: 1853

Sammler des verlorenen Schatzes. Ein waghalsiger Forscher begibt sich auf eine der abenteuerlichsten Expeditionen, die es je gab: Alfred Russel Wallace und seine Forschungsreise ins Amazonasgebiet. Auf eigene Faust bricht der Naturenthusiast Alfred Russel Wallace im Jahr 1848 von England nach Brasilien auf, um die Tier- und Pf lanzenwelt am Amazonas zu erforschen. Wallace schlägt sich von Pará (heute Belém) aus zu den Oberläufen des Rio Negro durch – und gelangt dabei in Gegenden, die noch kein Europäer vor ihm betreten hatte. Die Beobachtung der Affen- und Schmetterlingsarten an beiden Flussufern bringt ihn erstmals auf die Spur der Evolutionstheorie, die er später zeitgleich mit Charles Darwin entwickeln wird. Die Erträge seiner Expedition sind großartig, das Unternehmen endet jedoch in einer Katastrophe: Von Krankheiten, Sandf löhen (die ihre Eier unter seine Zehennägel legen) und den ewigen Kriebelmücken geplagt, ist Wallace am Ende so ausgezehrt, dass er nur mit der Hilfe der Einheimischen überlebt. Die aber trinken den Alkohol, mit dem eigentlich die Fundstücke konserviert werden sollten; und Horden von Ameisen machen sich über die Sammlung her. Auf dem Rückweg setzt Wallace alles auf eine Karte: Er selbst, seine Aufzeichnungen und Zigtausende Sammlungsstücke treten auf dem Zweimaster Helen die Heimreise an. Auf hoher See bricht an Bord ein Feuer aus. Die Besatzung kann sich auf Beiboote retten. Doch für Wallace’ Sammlung, auch für die lebenden Affen und Vögel, die in England an Zoos und Sammler verkauft werden sollten, gibt es keine Rettung. Nur einen einzigen Papagei kann Wallace lebend aus dem Wasser fischen. Der gesamte Ertrag seiner Reise versinkt in den Fluten des Ozeans. Zurück in England, rekonstruiert Wallace seine Erlebnisse anhand von wenigen Notizen und Erinnerungen. Seinen Reisebericht, sowohl Abenteuerroman, Forschungsgeschichte und frühes Zeugnis der Suche nach dem Ursprung der Arten, gab es auf Deutsch nur 1855 in einer stark verstümmelten Fassung – nun, nach über 150 Jahren, wird er endlich für die deutschsprachige Leserschaft erschlossen!
Science

Forestry Research

A Mandate for Change

Author: Committee on Forestry Research,Commission on Life Sciences,Division on Earth and Life Studies,National Research Council

Publisher: National Academies Press

ISBN: 030958261X

Category: Science

Page: 77

View: 3026

Committee on Forestry Research, National Research Council Forests are valuable in our daily lives, crucial to our nation's ecomony, and integral to the long-term health of the environment. Yet, forestry research has been critically underfunded, and the data generated under current research programs is not enough to meet the diverse needs of our society. Forestry Research provides a research agenda that should yield the information we need to develop responsible policies for forest use and management. In this consensus of forestry experts, the volume explores: The diverse and competing concerns of the timber industry, recreational interests, and wildlife and environmental organizations. The gap between our need for information and the current output of the forestry research program. Areas of research requiring attention: biology of forest organisms, ecosystem function and management, human-forest interactions, wood as raw material, and international trade and competition. Forestry Research is an important book of special interest to federal and state policymakers involved in forestry issues, research managers, researchers, faculty, and students in the field.
Science

The Biochemical Ecology of Marine Fishes

Author: N.A

Publisher: Academic Press

ISBN: 0080579590

Category: Science

Page: 350

View: 4688

This volume is dedicated to an in-depth discussion of the biochemical ecology of marine fishes. The authors review fish biology with regard to the environment and the world's fisheries. They show how fish can be assessed for harvesting at the best time in their life cycles and in the correct condition for marketing, freezing, and preserving. In this context, they include coverage of adaptations of fish to the environment, life cycles, and metabolism. This volume will be of interest to biochemists, marine ecologists, and fishery scientists. Advances in Marine Biology has always offered marine biologists an in-depth and up-to-date review on a variety of topics. As well as many volumes that provide a selection of important topics, the series also includes thematic volumes that examine a particular field in detail.
Nature

The Biology of Streams and Rivers

Author: Paul S. Giller,Bjorn Malmqvist

Publisher: Oxford University Press

ISBN: 9780198549772

Category: Nature

Page: 296

View: 7242

An easy-to-read, beautifully illustrated undergraduate-level introduction to fresh- and running-water biology. Each chapter includes practical information on simple studies and experiments for students to try. The text begins with the physical features that define running water (lotic) habitats then continues with organisms that inhabit these habitats, and concludes with a discussion of applied issues surrounding water use, including pollution, species diversity, and conservation. The authors outline the range of living organisms in lotic habitats, and the environmental adaptations they exhibit. They discuss population, community, and ecosystem patterns and processes, such as energy flow, nutrient cycling, migration, food webs, and community structure. Particular consideration is given to links between stream and river channels and their surrounding landscapes, to short-term and seasonal changes, and to historical and biogeographical factors. The text concludes with a section of additional practical field work activities and a list for further reading.
Fishes

Advances in Fish Biology

Prof. S.S. Khanna Felicitation Volume

Author: H. R. Singh

Publisher: N.A

ISBN: N.A

Category: Fishes

Page: 304

View: 9509

Festschrift honoring S.S. Khanna, b. 1930, a former professor of zoology and vice-chancellor, Kumaun University; comprises contributed research papers.
Technology & Engineering

Das sechste Sterben

Wie der Mensch Naturgeschichte schreibt

Author: Elizabeth Kolbert

Publisher: Suhrkamp Verlag

ISBN: 3518740628

Category: Technology & Engineering

Page: 312

View: 3350

Sie haben noch nie etwas vom Stummelfußfrosch gehört? Oder vom Sumatra-Nashorn? Gut möglich, dass Sie auch nie von ihnen hören werden, denn sie sind dabei auszusterben. Wir erleben derzeit das sechste sogenannte Massenaussterben: In einem relativ kurzen Zeitraum verschwinden ungewöhnlich viele Arten. Experten gehen davon aus, dass es das verheerendste sein wird, seit vor etwa 65 Millionen Jahren ein Asteroid unter anderem die Dinosaurier auslöschte. Doch dieses Mal kommt die Bedrohung nicht aus dem All, sondern wir tragen die Verantwortung. Wie haben wir Menschen das Massenaussterben herbeigeführt? Wie können wir es beenden? Elizabeth Kolbert spricht mit Geologen, die verschwundene Ozeane erforschen, begleitet Botaniker in die Anden und begibt sich gemeinsam mit Tierschützern auf die Suche nach den letzten Exemplaren gefährdeter Arten. Sie zeigt, wie ernst die Lage ist, und macht uns zu Zeugen der dramatischen Ereignisse auf unserem Planeten.