Gerald L. Kooyman's Books

Journeys with Emperors

Tracking the World's Most Extreme Penguin

By: Gerald L. Kooyman,Jim Mastro

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Journeys with Emperors

Tracking the World's Most Extreme Penguin

By: Gerald L. Kooyman,Jim Mastro

With stunning photographs from the ice edge, a firsthand account of a researcher’s time in Antarctica and of the perilous journeys of the world’s largest penguin species: the iconic emperor. Nearly all emperor penguin colonies are extremely remote; of the sixty-six known, fewer than thirty have been visited by humans, and even fewer have been the subject of successful research programs. One of the largest known emperor penguin colonies is found on a narrow band of sea ice attached to the Antarctic continent. In Journeys with Emperors, Gerald L. Kooyman and Jim Mastro take us to this far-flung colony in the Ross Sea, showing us how scientists gained access to it, and what they learned while living among the penguins as they raised their chicks. The primary mission was to record the birds’ activities at sea, and the data revealed important aspects of emperor penguin behavior and physiology: for instance, that in the course of hunting for food, some of the penguins dive to depths of greater than five hundred meters (a third of a mile, which is deeper than for any other diving bird). The researchers also discovered that, crucially, most of the emperor’s life is actually spent at sea, with fledged chicks and adults making separate, perilous journeys through icy water. When chick nurturing is complete, the fledglings abandon the colony in large groups, heading north to the Southern Ocean. The adults leave at the same time, traveling one thousand kilometers eastward across the Ross Sea to a sea-ice sanctuary for molting. During this journey, they must gain enough weight to survive the month-long molt, when every feather is replaced and the birds cannot enter the water to feed. After the molt, many if not most return to the colony to breed once again. For the males, this means another fast—this time for 120 days as they incubate their eggs. The nearness of the colony to the ice edge spared the penguins the long, energy-draining march for which other colonies are well-known. It also allowed researchers to observe the penguins’ departures to and arrivals from their foraging journeys, as well as their dangerous interactions with leopard seals and killer whales. Featuring original color photographs and complemented with online videos, Journeys with Emperors is both an eye-opening overview of the emperor penguin’s life and a thrilling tale of scientific discovery in one of the most remote, harsh, and beautiful places on Earth.

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Page Count

219

Publisher

University of Chicago Press

Published Date

ISBN 10

022682439X

ISBN 13

9780226824390

Diverse Divers

Physiology and behavior

By: Gerald L. Kooyman

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Diverse Divers

Physiology and behavior

By: Gerald L. Kooyman

This book is not a conventional review of diving physiology. The coverage of the literature has been selective rather than en compassing, the emphasis has been on field studies rather than laboratory investigations, and the dive responses described are often discussed from the perspective of some of the flaws or weaknesses in the conclusions. Some of these points are of more historical interest to note how our concepts have evolved as we learn more about behavior and responses to natural diving in contrast to forced submersions in the laboratory. As a result there is a degree of evaluation of some experiments on my part that may seem obvious or controversial to the specialist. I have followed this planat times in order to aid the reader, who I hope is often an untergraduate or graduate stu dent, the nonspecialist, and the layman, in appreciating to some degree the level of dissatisfaction or skepticism about certain areas of research in diving physiology. In view of historical boundaries in vertebrate biology, the subject is of broad enough importance to catch the interest of a wide audience of readers if I have done my job well. For ex ample, of the major epochal transitions or events there have been in vertebrate history, three come immediately to mind: (1) The transition from aquatic to aerial respiration which ultimately led to a broad occupation of terrestrial habitats. (2) The development of endothermy.

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Page Count

204

Publisher

Springer Science & Business Media

Published Date

ISBN 10

364283602X

ISBN 13

9783642836022

Penguins

The Animal Answer Guide

By: Gerald L. Kooyman,Wayne Lynch

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Penguins

The Animal Answer Guide

By: Gerald L. Kooyman,Wayne Lynch

The fascinating biology and evolutionary history of these odd, flightless birds. Flightless, iconic birds made even more famous by the 2005 film March of the Penguins, penguins conjure up images of caring parents, devoted couples, and tough survivors. In Penguins: The Animal Answer Guide, Gerald L. Kooyman and Wayne Lynch inform readers about all seventeen species, including the emperor penguin featured in the film. Do you know why penguins live only in the Southern Hemisphere? Or that they can be ferocious predators? Why are penguins black and white? Do they play? This book answers these questions and many more, illuminating the fascinating biology and evolutionary history of these odd birds. Kooyman has studied penguins for decades, and Lynch’s photographs of penguins in the wild are the best ever captured. The result of their combined effort is a book that answers every penguin question you've ever had. Whether you hope to travel to the Southern Hemisphere or simply want to learn more about wildlife, Penguins: The Animal Answer Guide deserves a spot on your bookshelf.

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Page Count

180

Publisher

JHU Press

Published Date

ISBN 10

1421410524

ISBN 13

9781421410524

Annual Cycles of Diving Behavior and Ecology of the Weddell Seal

By: Michael Angelo Castellini,Randall William Davis,Gerald L. Kooyman

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Annual Cycles of Diving Behavior and Ecology of the Weddell Seal

By: Michael Angelo Castellini,Randall William Davis,Gerald L. Kooyman

This work details more than ten years of study in the Antarctic on the diving biology of Weddell seals, a species capable of diving over 600 meters and for as long as 82 minutes. The authors focus on seasonal diving patterns and geographical differences and discuss how diving patterns are influenced by the physical and ecological environment of the seals.

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Page Count

220

Publisher

Univ of California Press

Published Date

ISBN 10

0520097793

ISBN 13

9780520097797

Journeys with Emperors

Tracking the World's Most Extreme Penguin

By: Gerald L. Kooyman,Jim Mastro

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Journeys with Emperors

Tracking the World's Most Extreme Penguin

By: Gerald L. Kooyman,Jim Mastro

With stunning photographs from the ice edge, this firsthand account of a researcher's time in Antarctica and of the perilous journeys of the world's largest penguin species: the iconic emperor. Nearly all emperor penguin colonies are extremely remote; of the sixty-six known, fewer than thirty have been visited by humans, and even fewer have been the subject of successful research programs. One of the largest known emperor penguin colonies is found on a narrow band of sea ice attached to the Antarctic continent. In Journeys with Emperors, Gerald L. Kooyman and Jim Mastro take us to this far-flung colony in the Ross Sea, revealing how scientists gained access to it, and what they learned while living among the penguins as they raised their chicks. The Ross Sea colony is close to the ice edge, which spares the penguins the long, energy-draining march for which other colonies are well-known. But life at this colony is not without movement. The proximity of the ice edge to the birds allowed researchers to observe the penguins as they came and went on their foraging journeys, including their interactions with leopard seals and killer whales. What the scientists witnessed revealed important aspects of emperor penguin behavior and physiology. For instance, they discovered that in the course of hunting for food, some of the penguins dive to depths of greater than five hundred meters (a third of a mile, deeper than any other diving bird). And crucially: most of the emperor's life is actually spent at sea, with fledged chicks and adults making separate, perilous journeys across icy water--to mature or to feed before they must fast while they molt. When chick nurturing is complete, the fledglings abandon the colony in large groups, heading north to the Southern Ocean. The adults leave at the same time, traveling one thousand kilometers eastward across the Ross Sea to a sea-ice sanctuary for molting. During this journey, they must gain enough weight to survive the month-long molt, when every feather is replaced and the birds cannot enter the water to feed. After the molt, many if not most return to the colony to breed once again. For the males, this means another fast--this time for 120 days as they incubate their eggs. Featuring original color photographs and complemented with online videos, Journeys with Emperors is both an eye-opening overview of the emperor penguin's life and a thrilling tale of scientific discovery in one of the most remote, harsh, and beautiful places on Earth.

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Page Count

219

Publisher

University of Chicago Press

Published Date

ISBN 10

0226824381

ISBN 13

9780226824383

Book's by Gerald L. Kooyman

Journeys with Emperors

Journeys with Emperors

Diverse Divers

Diverse Divers

Penguins

Penguins

Annual Cycles of Diving Behavior and Ecology of the Weddell Seal

Annual Cycles of Diving Behavior and Ecology of the Weddell Seal

Journeys with Emperors

Journeys with Emperors

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