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"Predatory animals"
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Fierce predators
Seeing a wolf stalking its prey would be almost impossible to witness up close. It wouldn't be safe to be so near such a deadly predator's jaws when it's on the hunt. But in this book, readers can see wolves, owls, and many more terrifying predators do what they do best, capture prey. Up-close, full-color photographs highlight the sharp teeth, long claws, and huge paws of some of the world's deadliest animals. Fact boxes include fascinating information about animal bodies and behavior and statistics about each animal's size, range, and lifespan.
Book
Animal vigilance : monitoring predators and competitors
Animal Vigilance builds on the author's previous publication with Academic Press (Social Predation: How Group Living Benefits Predators and Prey) by developing several other themes including the development and mechanisms underlying vigilance, as well as developing more fully the evolution and function of vigilance.Animal vigilance has been.
eBook
Carnivore Minds
Myth and media typically cast animals we consider predators or carnivores as unthinking killers-dangerous, unpredictable, and devoid of emotion. But is this portrait valid? By exploring their inner lives, this pioneering book refutes the many misperceptions that hide the true nature of these animals. We discover that great white sharks express tender maternal feelings, rattlesnakes make friends, orcas abide by an ancient moral code, and much more. Using the combined lenses of natural history, neuroscience, and psychology, G. A. Bradshaw describes how predators share the rainbow of emotions that humans experience, including psychological trauma. Renowned for leading research on post-traumatic stress disorder (PTSD) in elephants and other species, Bradshaw decries the irrational thinking behind wildlife policies that equate killing carnivores with \"conservation.\" In its place, she proposes a new, ethical approach to coexistence with the planet's fiercest animals.
eBook
Tooth and claw : top predators of the world
\"This book provides a comprehensive coverage of the biology, ecology, and conservation of top predators--including big cats, wild dogs, sharks, raptors, marine mammals (Orca and others), snakes and lizards, and humans--but it is not encyclopedic in its approach. While it incorporates up-to-date scholarship from practitioners working with a diversity of top predators, the book is also accessible for non-experts. The book is illustrated with a original art and many color photographs\"-- Provided by publisher.
Book
Powerful predators
Natures top hunters range from the massive polar bear to the (relatively) small praying mantis. But they all have one thing in common: They're built to kill. This book brings readers right into the action.
Book
Climate change and overfishing increase neurotoxicant in marine predators
More than three billion people rely on seafood for nutrition. However, fish are the predominant source of human exposure to methylmercury (MeHg), a potent neurotoxic substance. In the United States, 82% of population-wide exposure to MeHg is from the consumption of marine seafood and almost 40% is from fresh and canned tuna alone
1
. Around 80% of the inorganic mercury (Hg) that is emitted to the atmosphere from natural and human sources is deposited in the ocean
2
, where some is converted by microorganisms to MeHg. In predatory fish, environmental MeHg concentrations are amplified by a million times or more. Human exposure to MeHg has been associated with long-term neurocognitive deficits in children that persist into adulthood, with global costs to society that exceed US$20 billion
3
. The first global treaty on reductions in anthropogenic Hg emissions (the Minamata Convention on Mercury) entered into force in 2017. However, effects of ongoing changes in marine ecosystems on bioaccumulation of MeHg in marine predators that are frequently consumed by humans (for example, tuna, cod and swordfish) have not been considered when setting global policy targets. Here we use more than 30 years of data and ecosystem modelling to show that MeHg concentrations in Atlantic cod (
Gadus morhua
) increased by up to 23% between the 1970s and 2000s as a result of dietary shifts initiated by overfishing. Our model also predicts an estimated 56% increase in tissue MeHg concentrations in Atlantic bluefin tuna (
Thunnus thynnus
) due to increases in seawater temperature between a low point in 1969 and recent peak levels—which is consistent with 2017 observations. This estimated increase in tissue MeHg exceeds the modelled 22% reduction that was achieved in the late 1990s and 2000s as a result of decreased seawater MeHg concentrations. The recently reported plateau in global anthropogenic Hg emissions
4
suggests that ocean warming and fisheries management programmes will be major drivers of future MeHg concentrations in marine predators.
Overfishing and warming ocean temperature have caused an increase in methylmercury concentrations in some Atlantic predatory fish, and this trend is predicted to continue unless stronger mercury and carbon emissions standards are imposed.
Journal Article
Wild predators
\"Go hunting with the world's most amazing predators, such as sharks, lions, and crocodiles\"-- Provided by publisher.
Book
Space Use and Movement of a Neotropical Top Predator: The Endangered Jaguar
Accurately estimating home range and understanding movement behavior can provide important information on ecological processes. Advances in data collection and analysis have improved our ability to estimate home range and movement parameters, both of which have the potential to impact species conservation. Fitting continuous-time movement model to data and incorporating the autocorrelated kernel density estimator (AKDE), we investigated range residency of forty-four jaguars fit with GPS collars across five biomes in Brazil and Argentina. We assessed home range and movement parameters of range resident animals and compared AKDE estimates with kernel density estimates (KDE). We accounted for differential space use and movement among individuals, sex, region, and habitat quality. Thirty-three (80%) of collared jaguars were range resident. Home range estimates using AKDE were 1.02 to 4.80 times larger than KDE estimates that did not consider autocorrelation. Males exhibited larger home ranges, more directional movement paths, and a trend towards larger distances traveled per day. Jaguars with the largest home ranges occupied the Atlantic Forest, a biome with high levels of deforestation and high human population density. Our results fill a gap in the knowledge of the species' ecology with an aim towards better conservation of this endangered/critically endangered carnivore-the top predator in the Neotropics.
Journal Article