UNDERWATER FORAGING FREEDIVING FOR FOOD

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Underwater Foraging Freediving For Food

Author : Ian Donald
ISBN : 1484904591
Genre : Sports & Recreation
File Size : 28.98 MB
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In this full colour, large format publication by master freediving instructor and expert marine forager Ian Donald, you will be taught in a step-by-step manner how to freedive, forage for marine foods, and spearfish, all with sustainability in mind.
Category: Sports & Recreation

The Art Of Eating Through The Zombie Apocalypse

Author : Lauren Wilson
ISBN : 9781940363363
Genre : Cooking
File Size : 33.18 MB
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Just because the undead’s taste buds are atrophying doesn’t mean yours have to! You duck into the safest-looking abandoned house you can find and hold your breath as you listen for the approaching zombie horde you’ve been running from all day. You hear a gurgling sound. Is it the undead? No—it’s your stomach. When the zombie apocalypse tears down life and society as we know it, it will mean no more take out, no more brightly lit, immaculately organized aisles of food just waiting to be plucked effortlessly off the shelves. No more trips down to the local farmers’ market. No more microwaved meals in front of the TV or intimate dinner parties. No, when the undead rise, eating will be hard, and doing it successfully will become an art. The Art of Eating through the Zombie Apocalypse is a cookbook and culinary field guide for the busy zpoc survivor. With more than 80 recipes (from Overnight of the Living Dead French Toast and It’s Not Easy Growing Greens Salad to Down & Out Sauerkraut, Honey & Blackberry Mead, and Twinkie Trifle), scads of gastronomic survival tips, and dozens of diagrams and illustrations that help you scavenge, forage, and improvise your way to an artful post-apocalypse meal. The Art of Eating is the ideal handbook for efficient food sourcing and inventive meal preparation in the event of an undead uprising. Whether you decide to hole up in your own home or bug out into the wilderness, whether you prefer to scavenge the dregs of society or try your hand at apocalyptic agriculture, and regardless of your level of skill or preparation, The Art of Eating will help you navigate the wasteland and make the most of what you eat.
Category: Cooking

Was Man More Aquatic In The Past Fifty Years After Alister Hardy Waterside Hypotheses Of Human Evolution

Author : Mario Vaneechoutte
ISBN : 9781608052448
Genre : Social Science
File Size : 88.59 MB
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The book starts from the observation that humans are very different from the other primates. Why are we naked? Why do we speak? Why do we walk upright? Fifty years ago, in 1960, marine biologist Sir Alister Hardy tried to answer this when he announced his so-called aquatic hypothesis: human ancestors did not live in dry savannahs as traditional anthropology assumes, but have adapted to live at the edge between land and water, gathering both terrestrial and aquatic foods. This eBook is an up-to-date collection of the views of the most important protagonists of this long-neglected theory of huma.
Category: Social Science

Advances In Comparative And Environmental Physiology

Author :
ISBN : 9783642759000
Genre : Science
File Size : 64.68 MB
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Advances in Comparative and Environmental Physiology helps biologists, physiologists, and biochemists keep track of the extensive literature in the field. Providing comprehensive, integrated reviews and sound, critical, and provocative summaries, this series is a must for all active researchers in environmental and comparative physiology.
Category: Science

Antarctic

Author :
ISBN : UOM:39015073121389
Genre : Antarctica
File Size : 21.24 MB
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Category: Antarctica

The Physiological Consequences Of Breath Hold Diving In Marine Mammals The Scholander Legacy

Author : Andreas Fahlman
ISBN : 2889191001
Genre :
File Size : 33.26 MB
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Breath-hold diving marine mammals are able to remain submerged for prolonged periods of time and dive to phenomenal depths while foraging. A number of physiological, biochemical and behavioral traits have been suggested that enable this life style, including the diving response, lung collapse, increased O2 stores, diving induced hypometabolism, and stroke-and-glide behavior to reduce dive metabolic cost. Since the initial studies by Scholander in the 1940‘s, when most of the physiological and biochemical traits were suggested, few have received as much study as the diving response and O2 management. The calculated aerobic dive limit (cADL) was an important concept which allowed calculation of the aerobic dive duration, and was defined as the total O2 stores divided by the rate of O2 consumption (metabolic rate). The total O2 stores have been defined for several species, and studies in both forced and freely diving animals have refined the metabolic cost of diving. Currently there appears to be little consensus about whether marine mammals perform a significant proportion of dives exceeding the cADL or not and there may be large differences between species. The diving response is a conserved physiological trait believed to arise from natural selection. The response includes diving-induced bradycardia, peripheral vasoconstriction, and altered blood flow distribution. While the response results in reduced cardiac work, it is not clear whether this is required to reduce the overall metabolic rate. An alternate hypothesis is that the primary role of the diving bradycardia is to regulate the degree of hypoxia in skeletal muscle so that blood and muscle O2 stores can be used more efficiently. Scholander suggested that the respiratory anatomy of marine mammals resulted in alveolar collapse at shallow depths (lung collapse), thereby limiting gas exchange. This trait would limit uptake of N2 and thereby reduce the risk of inert gas bubble formation and decompression sickness. In his initial treatise, Scholander suggested that alveolar collapse probably made inert gas bubble formation unlikely during a single dive, but that repeated dives could result in significant accumulation that could be risky. Despite this, lung collapse has been quoted as the main adaptation by which marine mammals reduce N2 levels and inert gas bubble formation. It was surprising, therefore, when recent necropsy reports from mass stranded whales indicated DCS like symptoms. More recent studies have shown that live marine mammals appear to experience bubbles under certain circumstances. These results raise some interesting questions. For example, are marine mammals ever at risk of DCS, and if so could N2 accumulation limit dive performance? While an impressive number of studies have provided a theoretical framework that explains the mechanistic basis of the diving response, and O2 management, many questions remain, some widely-accepted ideas actually lack sufficient experimental confirmation, and a variety of marine mammal species, potentially novel models for elucidating new diving adaptations, are understudied. The aim of this Frontiers Topic is to provide a synthesis of the current knowledge about the physiological responses of marine mammals that underlie their varied dive behavior. We also include novel contributions that challenge current ideas and that probe new hypotheses, utilize new experimental approaches, and explore new model species. We show that the field has recently entered a phase of renewed discovery that is not only unraveling more secrets of the natural diving response but will drive new applications to aid human exploration of the ocean depths. We also welcome comparative analyses, especially contributions that compare marine mammals with human divers.
Category:

Quest For The Past

Author : Reader's Digest Association
ISBN : 0895771705
Genre : History
File Size : 44.91 MB
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Covering events from the dawn of recorded history of 1500 A.D., this illustrated book explores ancient civilizations to solve mysteries, correct erroneous beliefs, and reveal remarkable accomplishments of the past
Category: History