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Books > Sport & Leisure > Natural history, country life & pets > Wild animals > Aquatic creatures > General

Leopard Frogs (Paperback): Doug Wechsler Leopard Frogs (Paperback)
Doug Wechsler
R633 Discovery Miles 6 330 Ships in 18 - 22 working days
Final Programmatic Environmental Impact Statement for Seagrass Restoration in the Florida Keys National Marine Sanctuary... Final Programmatic Environmental Impact Statement for Seagrass Restoration in the Florida Keys National Marine Sanctuary (Paperback)
National Oceanic and Atmospheric Adminis
R441 Discovery Miles 4 410 Ships in 18 - 22 working days

This Programmatic Environmental Impact Statement (PEIS) systematically evaluates the short and long-term environmental and socioeconomic effects related to the implementation of seagrass restoration and seagrass injury prevention projects in the Florida Keys National Marine Sanctuary (FKNMS). The goal of this PEIS is to describe a range of seagrass restoration techniques, used for both primary and compensatory restoration projects and seagrass injury prevention actions that potentially may be implemented in the FKNMS. The types of seagrass restoration and injury prevention projects proposed in this plan will be implemented with funds collected through natural resource damage assessment (NRDA) settlements for injuries to seagrasses within the FKNMS. The anticipated beneficial and adverse environmental and socioeconomic impacts of each restoration technique are discussed in detail.

On the Dynamics of Exploited Fish Populations (Paperback): Raymond, J. Breverton, Sidney, J. Holt On the Dynamics of Exploited Fish Populations (Paperback)
Raymond, J. Breverton, Sidney, J. Holt
R1,874 Discovery Miles 18 740 Ships in 18 - 22 working days

This is a reprint of the classic first published in 1957. One of the authors, Raymond Beverton, recently died. His co-author, Sidney Holt, has written a new Foreword to this printing in which he reviews events in fisheries research and management through the past 50 years as these relate to their joint work. On the Dynamics of Exploited Fish Populations has become the most widely cited fisheries book ever published and the fact that the bulk of the information contained within its covers is still valid has led to this reprinting. Beverton and Holt's great work created a solid foundation for one of the two major global visions of the science of fisheries. This book was the genesis of the modern age-structured approach to the optimal management of fishery resources. Their approach led directly to a formulation of the fishery catch equation with almost universal applicability. Its advantage was that it produced easily interpreted outputs that could be clearly and directly applied to any fishery. Ultimately, this approach was the forerunner to VPA and allied techniques, the core of modern catch forecasting used in setting quotas and in managing commercial fisheries worldwide. Although the perception of the objectives of fisheries research has changed since the 1950s, and computers now enable calculations, data analysis, and theoretical exploration far beyond their capability at the time, Beverton and Holt will continue to be a source of inspiration and insight for many years to come. Sidney J. Holt was educated at Reading University, England. He has held academic positions at St John's College, Cambridge, England; University of California at Santa Cruz; University of Rhode Island; University of Malta. He is the author of 400 scientific papers, book chapters and popular articles, especially in the fields of fisheries science and management, conservation, protection of marine mammals, especially whales. He served 25 years in the United Nations system of Specialised Agencies (including the FAO in Rome, UNESCO as Secretary of the Intergovernmental Oceanographic Commission and Director of Division of Marine Science; Marine Mammals; Advisor to the United Nations Environment Programme; UN Adviser on Mediterranean Marine Affairs, in which capacity he founded and served as first Director of, the International Ocean Institute, in Malta). Since his formal retirement Dr Holt has served on the delegations of Italy and of the Republic of Seychelles to the International Whaling Commission, and also as adviser to the delegations of France and Chile. Dr Holt has worked extensively with several Non-Governmental Organisations concerned with marine conservation. Apart from continuing to write and campaign Dr Holt advises the Third Millennium Foundation, and serves as Executive Director of the International League for the Protection of Cetaceans, which he founded 18 years ago.

An Analysis of Differential Delayed Mortality Experienced by Stream-type Chinook Salmon of the Snake River - A response by... An Analysis of Differential Delayed Mortality Experienced by Stream-type Chinook Salmon of the Snake River - A response by State, Tribal, and USFWS technical staff to the 'D' (Paperback)
Howard Schaller, Phaedra Budy, Charles Petrosky
R462 Discovery Miles 4 620 Ships in 18 - 22 working days

In this paper, we evaluate the NMFS conclusion that 'D' is now much higher than previously thought (A-Fish), demonstrate the sensitivity of estimates of 'D' to the numerous assumptions required to make an estimate of 'D', clarify and discuss the evidence for and against various interpretations of these assumptions, and discuss the possibility of improving estimates of 'D' in the future.

Sharks in Danger - Global Shark Conservation Status with Reference to Management Plans and Legislation (Paperback): Rachel... Sharks in Danger - Global Shark Conservation Status with Reference to Management Plans and Legislation (Paperback)
Rachel Cunningham-Day
R737 Discovery Miles 7 370 Ships in 18 - 22 working days

This book reviews the current status of, and threats to, shark populations globally with special reference to the basking shark and the great white shark. This book outlines why sharks are a valuable resource, identifies threats to sharks and where they occur and reviews what we need to know about sharks in order to protect them. Fisheries management procedures are investigated to target areas requiring future research and implementation. Conservation initiatives, legislation, and international agreements are reviewed and future measures suggested. Case histories on the basking shark and the great white shark detail threats specific to these species and identify research and management requirements.

Water (Book, 1st Mariner Books ed): De Villiers Water (Book, 1st Mariner Books ed)
De Villiers
R468 Discovery Miles 4 680 Ships in 18 - 22 working days

In his award-winning book WATER, Marq de Villiers provides an eye-opening account of how we are using, misusing, and abusing our planet's most vital resource. Encompassing ecological, historical, and cultural perspectives, de Villiers reports from hot spots as diverse as China, Las Vegas, and the Middle East, where swelling populations and unchecked development have stressed fresh water supplies nearly beyond remedy. Political struggles for control of water rage around the globe, and rampant pollution daily poses dire ecological theats. With one eye on these looming crises and the other on the history of our dependence on our planet's most precious commodity, de Villiers has crafted a powerful narrative about the lifeblood of civilizations that will be "a wake-up call for concerned citizens, environmentalists, policymakers, and water drinkers everywhere" (Publishers Weekly).


Against the Tide (Paperback): Richard Adams Carey Against the Tide (Paperback)
Richard Adams Carey
R453 Discovery Miles 4 530 Ships in 18 - 22 working days

With its spectacular beaches and charming towns, Cape Cod is known around the world as a vacation spot and a summer retreat for the well-to-do. But there is another Cape Cod, a hidden, hardscrabble, year-round world whose hunter-gatherer economy dates back to the Bay Colony. The world of the independent fisherman is one of constant peril, of arcane folkways and expert knowledge, of calculated risk and self-reliance -- and of freedom won daily through backbreaking, solitary work. It is a way of life deep in the American grain. Haunted by the numbers of family fishermen who have recently been forced to abandon the profession, Richard Adams Carey spent a year among a handful of men who stubbornly refuse to do so. Reminiscent of the work of William Warner and Joseph Mitchell, AGAINST THE TIDE is a masterly profile of four New England fishermen in which every page opens onto something more profound: maritime history, maritime ecology, and the poetic celebration of a special American place.


The Man Who Rode Sharks (Paperback, Illustrated Ed): William R. Royal The Man Who Rode Sharks (Paperback, Illustrated Ed)
William R. Royal; As told to Robert F. Burgess; Foreword by Eugenie Clark
R414 Discovery Miles 4 140 Ships in 18 - 22 working days
Red Leviathan - The Secret History of Soviet Whaling (Hardcover): Ryan Tucker Jones Red Leviathan - The Secret History of Soviet Whaling (Hardcover)
Ryan Tucker Jones
R710 R639 Discovery Miles 6 390 Save R71 (10%) Ships in 18 - 22 working days

A revealing and authoritative history that shows how Soviet whalers secretly helped nearly destroy endangered whale populations, while also contributing to the scientific understanding necessary for these creatures' salvation. The Soviet Union killed over 600,000 whales in the twentieth century, many of them illegally and secretly. That catch helped bring many whale species to near extinction by the 1970s, and the impacts of this loss of life still ripple through today's oceans. In this new account, based on formerly secret Soviet archives and interviews with ex-whalers, environmental historian Ryan Tucker Jones offers a complete history of the role the Soviet Union played in the whales' destruction. As other countries-especially the United States, Great Britain, Japan, and Norway-expanded their pursuit of whales to all corners of the globe, Stalin determined that the Soviet Union needed to join the hunt. What followed was a spectacularly prodigious, and often wasteful, destruction of humpback, fin, sei, right, and sperm whales in the Antarctic and the North Pacific, done in knowing violation of the International Whaling Commission's rules. Cold War intrigue encouraged this destruction, but, as Jones shows, there is a more complex history behind this tragic Soviet experiment. Jones compellingly describes the ultimate scientific irony: today's cetacean studies benefitted from Soviet whaling, as Russian scientists on whaling vessels made key breakthroughs in understanding whale natural history and behavior. And in a final twist, Red Leviathan reveals how the Soviet public began turning against their own country's whaling industry, working in parallel with Western environmental organizations like Greenpeace to help end industrial whaling-not long before the world's whales might have disappeared altogether.

Secret Languages of the Sea (Paperback, Illustrated Ed): Robert F. Burgess Secret Languages of the Sea (Paperback, Illustrated Ed)
Robert F. Burgess
R378 Discovery Miles 3 780 Ships in 18 - 22 working days
Weird Sea Creatures (Paperback): Erich Hoyt Weird Sea Creatures (Paperback)
Erich Hoyt
R282 Discovery Miles 2 820 Ships in 10 - 15 working days

"An illustrated look at the weird and wonderful creatures that live in the very deepest parts of the sea."

Humans have always wondered, with a mixture of fear and fascination, what lurks beneath the surface in the depths of the ocean. In this book, Erich Hoyt introduces 50 of the oddest creatures you will ever meet in the sea. From the carnivorous comb jelly to the lantern-carrying deep-sea dragonfish, from a vampire squid with giant eyes to dancing jellyfish, Hoyt explores these peculiar conditions and their equally peculiar environment.

These creatures have adapted to lack of light and, using sound pulses (echolocation) or light-producing organs and pigment cells (emitting light via bioluminescence), they are able to communicate without giving their location away to predators.

These stunning, captivating photographs weren't taken from the portholes of submarines. Photographers David Shale, Solvin Zanki and Jeff Rotman worked with oceanography institutes, museums and the BBC Natural History Unit, taking long cruises across the ocean to record and try to understand these little-studied residents of the deep sea. To capture the creatures for observation, a net was lowered far beneath the surface. As soon as the trawl was hauled aboard, the photographers would race to transfer the most unusual animals to fresh seawater aquariums in a chilled laboratory on board.

These pages let readers gaze into strange, wild eyes and study faces with toothless or crooked smiles that witness the fruits of deep-sea evolution. Informative captions explain what the patterns of lights on their bodies are "saying" to others in their absolutely dark world. The wonder and extraordinary weirdness of what lives in the deep seas, so far away from us and yet so close, will become more familiar with this book.

The search for the giant squid (Paperback): Richard Ellis The search for the giant squid (Paperback)
Richard Ellis
R520 Discovery Miles 5 200 Ships in 18 - 22 working days

The most mysterious and elusive of all sea creatures, the giant squid--at least sixty feet long and weighing nearly a ton--is also one of the largest. Yet for all its magnificent size and threatening undersea presence, Architeuthis has remained a mystery. Until now. In this marvelous and beautifully illustrated book, marine biologist, explorer, and artist Richard Ellis presents all that is known about the giant squid. Delving into myth, literature, popular culture, and science, he brings readers face to face with this remarkable creature. He also provides a thorough, compelling study of what is known and what is still to be discovered about this exotic animal that has never been studied alive. Interweaving his engrossing narrative with a wealth of fascinating illustrations and photographs, Ellis gives us the first comprehensive history of the only living creature that can truly be called a "sea monster."

Smith's Sea Fishes (Hardcover, Revised ed.): Margaret Smith, Phil Heemstra Smith's Sea Fishes (Hardcover, Revised ed.)
Margaret Smith, Phil Heemstra
R924 Discovery Miles 9 240 Ships in 4 - 6 working days

A reprinted edition of a work on the sea fishes of Southern Africa, containing new species descriptions and additions and corrections to the text.

Reef Fishes and Corals - East Coast of Southern Africa (Paperback, Re-issue): Dennis King Reef Fishes and Corals - East Coast of Southern Africa (Paperback, Re-issue)
Dennis King; Photographs by Dennis King
R181 Discovery Miles 1 810 Ships in 4 - 6 working days

This colourful guide contains concise information on 234 reef fish and 36 coral species found along the KwaZulu-Natal and southern Mozambique coasts, with matching high quality photographs to aid quick identification. The book is aimed at the fast-growing community of sport scuba divers, snorkellers and rock pool enthusiasts, but its simple and easy-to-use format and attractive high quality underwater photographs will appeal also to the fisherman and anyone who loves the sea.

Giant Bluefin (Paperback): Douglas Whynott Giant Bluefin (Paperback)
Douglas Whynott
R475 R443 Discovery Miles 4 430 Save R32 (7%) Ships in 18 - 22 working days

This elegantly written and compelling work portrays the way the Japanese demand for giant bluefin tuna has altered the lives of Cape Cod fishermen. In telling the story of one man’s passionate hunt for giant bluefin, Douglas Whynott details the competition and camaraderie in the bluefin fishery, the pressures of a conservationist movement seeking to limit the bluefin harvest, and the struggle of the fisherman himself against “the wild horses of [the] fish species.”

Sharks of North American Waters (Paperback): Castro Sharks of North American Waters (Paperback)
Castro
R499 Discovery Miles 4 990 Ships in 18 - 22 working days

For many years, brief encounters between sharks and humans could leave the latter with a vivid memory of the much-maligned fish but no convenient means of identifying it more specifically. With the publication of The Sharks of North American Waters in 1983, everyone from the experienced ichthyologist to the weekend angler had access to concise descriptions and accurate, detailed drawings in this handy field guide to more than one hundred species. All species that have been reported within five hundred nautical miles of U.S. and Canadian shores (plus a few deep-water species from adjacent areas) are illustrated, with summaries of diagnostic characteristics, similar species, geographic range, biology, reproduction, utility, and fishing methods. An illustrated key to the families of sharks, family descriptions, and species characteristics makes field identification simple. Also included is a general account of the evolution of sharks, their anatomy, reproduction, and distribution.

Land Hermit Crabs (Paperback, 2nd Revised edition): Neal Pronek Land Hermit Crabs (Paperback, 2nd Revised edition)
Neal Pronek
R197 Discovery Miles 1 970 Ships in 10 - 15 working days
The Field and Stream Treasury of Trout Fishing (Paperback): Leonard M. Wright The Field and Stream Treasury of Trout Fishing (Paperback)
Leonard M. Wright
R459 Discovery Miles 4 590 Ships in 18 - 22 working days
Northern Fishes - With special reference to the upper Mississippi valley (Paperback, Minnesota Archi): Samuel Eddy, Thaddeus... Northern Fishes - With special reference to the upper Mississippi valley (Paperback, Minnesota Archi)
Samuel Eddy, Thaddeus Surber
R1,449 Discovery Miles 14 490 Ships in 18 - 22 working days

Northern Fishes was first published in 1974. Minnesota Archive Editions uses digital technology to make long-unavailable books once again accessible, and are published unaltered from the original University of Minnesota Press editions. With the greatly increased interest in fishes and fishing since the earlier editions of this work were published, there has been need for a revised version of this indispensable book on the fishes of the Upper Mississippi Valley. This, the third edition, revised, of Northern Fishes by Samuel Eddy and Thaddeus Surber, contains much new material and up-to-date information based on current knowledge about fishes, their environment, and fishing techniques. The book covers more than 160 species with descriptions and line drawings to illustrate almost all of them. The authors discuss recently introduced species and their importance to sportsmen and provide current data on the distribution of northern fishes. There are keys for the identification of the species and information about where they are found and their habits. This edition also contains a number of additions to the species list which result from rather extensive collecting of specimens since the earlier editions were compiled. Before presenting the data on individual species, the authors provide basic information about fishes in general-their structure, classification and origin, their food, and their parasites. The revised, updated section on fishing techniques includes information about spin casting. There are important chapters on lake dynamics, fish population dynamics, management of Minnesota and northern waters for fish production, and improvement of lakes and streams. The detailed information about species is arranged according to families. For further reading or reference there is a bibliography.

Exploring Britain's Hidden World - A natural history of seabed habitats (Hardcover): Keith Hiscock Exploring Britain's Hidden World - A natural history of seabed habitats (Hardcover)
Keith Hiscock
R742 Discovery Miles 7 420 Ships in 9 - 17 working days

Britain's shallow seas are a mysterious domain. They remain largely unseen and unexplored except by marine scientists and divers, who have been documenting their wondrous discoveries over many years. Now, a wealth of information about what lives on and in the seabed has been brought together in one sumptuously illustrated volume. Keith Hiscock describes the incredible variety of marine life that exists around Great Britain, providing a foundation of knowledge for those interested in the natural history of the shallow seabed. He explains how findings are gathered and organised, as well as showing what is out there and how it works. Fascinating, beautiful and often fragile, the habitats and marine life described are essential to the health and productivity of our oceans. Without an adequate, shared understanding of what and where they are, how can we identify and protect them? Exploring Britain's Hidden World is the culmination of 50 years of research by the author to better understand where different subtidal seabed habitats occur and how their associated marine life has come to exist. That quest draws on a rich vein of knowledge obtained by many naturalists, scientists and divers who, for almost 200 years, have described seabed communities and sought to understand their structure and function. Using a minimum of technical terminology, Keith Hiscock combines his interests in marine biology, diving and photography to inform, inspire, and leave a vivid and lasting impression of the marine habitats and species around Britain. He hopes this book will provide new insights, much pleasure, and perhaps some surprises too.

Freshwater Fishes of Eastern Canada (Paperback): W.B. Scott Freshwater Fishes of Eastern Canada (Paperback)
W.B. Scott
R792 Discovery Miles 7 920 Ships in 18 - 22 working days

From the more than one million square miles of the six eastern provinces of Canada 154 species of freshwater fishes have been reported. This edition of Freshwater Fishes of Canada provides the game and commercial fisherman and the naturalist with detailed information regarding these fishes, and assists in the accurate identification of the various species. The species are arranged in order of development: primitive first and the more highly specialized fishes last. Each description includes a picture, a list of other common names, the distinguishing features, size, habitat, life history and habits, food, and additional comments. Technical language has been avoided wherever possible but with no loss of accuracy. In this second edition the author has employed a system of keys for easier identification of families, and of the individuals in the two largest and most difficult species, the trout and minnow groups.

Voices in the Ocean - A Journey into the Wild and Haunting World of Dolphins (Paperback): Susan Casey Voices in the Ocean - A Journey into the Wild and Haunting World of Dolphins (Paperback)
Susan Casey
R444 R417 Discovery Miles 4 170 Save R27 (6%) Ships in 18 - 22 working days
In Search of Monster Fish - Angling for a More Sustainable Planet (Hardcover): Mark Spitzer In Search of Monster Fish - Angling for a More Sustainable Planet (Hardcover)
Mark Spitzer
R688 R617 Discovery Miles 6 170 Save R71 (10%) Ships in 18 - 22 working days

In Search of Monster Fish is an action-packed, knee-slapping ride into and out of the belly of the beast. Join extreme angler Mark Spitzer as he encounters man-eating catfish, ruthless barracuda, lacerating conger eels, berserk tarpon, and blood-curdling sharks in locales as exotic as the Amazon, Catalonia, the Dominican Republic, Senegal, and even in our own backyards. But this eco-odyssey isn't just about meeting and releasing some of the most grotesque lunkers in the world. It's about implementing solutions for problems as behemoth as global warming and issues as common as choosing what to eat for dinner. And as the ice caps melt at the rate of 1 percent annually, Spitzer battles his most epic goliath: a leviathan that dwells in the depths of us all, making us ask who the real monsters are, what our responsibilities truly are, and what we can possibly do to sustain our planet and ourselves when faced with such demonic disenlightenment. Spitzer then beats this whopper into submission by reframing his call to action and finding his own way. A new portal to the underworld has been opened in the cutting-edge literature of monster fish, and this is your entry ticket.

Frogs of South Africa: Their Facinating Life Stories (Hardcover): Wager Frogs of South Africa: Their Facinating Life Stories (Hardcover)
Wager
R341 Discovery Miles 3 410 Ships in 4 - 6 working days
Biologische Meereskunde (German, Paperback, 2., uberarb. Aufl. 2005, verand. Nachdruck 2016): Ulrich Sommer Biologische Meereskunde (German, Paperback, 2., uberarb. Aufl. 2005, verand. Nachdruck 2016)
Ulrich Sommer
R1,146 Discovery Miles 11 460 Ships in 18 - 22 working days

Das Meer ist der groesste Lebensraum der Erde - hier hat die Evolution der Organismen begonnen, und hier findet sich auch die groesste Vielfalt organismischer Bauplane. Lernfreundlich aufbereitet und leicht verstandlich geschrieben, gibt das Lehrbuch einen grundlegenden und umfassenden UEberblick uber die verschiedenen Lebensraume und Lebensgemeinschaften des Meeres. OEkologische Prozesse wie Konkurrenz, Fressbeziehungen, Symbiosen und Nahrungsnetze sind zentrale Themen. Zahlreiche Abbildungen regen zum Lesen und Lernen an.

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