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Books > Science & Mathematics > Biology, life sciences > Zoology & animal sciences > Animal ecology

New Zealand Lizards (Hardcover, 1st ed. 2016): David G. Chapple New Zealand Lizards (Hardcover, 1st ed. 2016)
David G. Chapple
R5,113 Discovery Miles 51 130 Ships in 10 - 15 working days

This edited volume is a timely and comprehensive summary of the New Zealand lizard fauna. Nestled in the south-west Pacific, New Zealand is a large archipelago that displays the faunal signatures of both its Gondwanan origins, and more recent oceanic island influences. New Zealand was one of the last countries on Earth to be discovered, and likewise, the full extent of the faunal diversity present within the archipelago is only just starting to be appreciated. This is no better exemplified than in lizards, where just 30 species (20 skinks, 10 geckos) were recognized in the 1950s, but now 104 are formally or informally recognized (61 skinks, 43 geckos). Thus, New Zealand contains one of the most diverse lizard faunas of any cool, temperate region on Earth. This book brings together the world's leading experts in the field to produce an authoritative overview of the history, taxonomy, biogeography, ecology, life-history, physiology and conservation of New Zealand lizards.

Games of Life - Explorations in Ecology, Evolution, and Behaviour (Paperback): Karl Sigmund Games of Life - Explorations in Ecology, Evolution, and Behaviour (Paperback)
Karl Sigmund
R2,593 Discovery Miles 25 930 Ships in 10 - 15 working days

Life is often a matter of gambles, pay-offs, and trade-offs, just like a game. This book takes readers on a tour through the games and computer simulations that are actually helping to advance knowledge in such fields as ecology, evolution, and animal behavior. Although the book deals with questions of vital importance, like sex and survival, it does so in the lively, entertaining spirit of game-playing. It starts with artificial life and self-replicating automata, a topic ideally suited for a computer-games approach. The book goes on to study pursuit games between predators and prey, and chaotic motion and its role in ecology. Games of chance and statistical paradoxes illuminate the randomness in molecular evolution, while some bizarre double games played by chromosomes help explain the laws of population genetics. Other topics include courtship, ownership, partnership, and brinksmanship--illustrated through the game of poker and computer tournaments. No other book explains so well why scientific observations and insights can be structured as the rules of a survival game, and what happens when they are assembled on a computer or in the mind and allowed to run their course. General readers as well as professionals and students in ecological, evolutionary, and behavioral studies will find this a fascinating and informative work.

Behavioural Ecology of Western Palearctic Falcons (Hardcover, 1st ed. 2020): Giovanni Leonardi Behavioural Ecology of Western Palearctic Falcons (Hardcover, 1st ed. 2020)
Giovanni Leonardi
R4,633 Discovery Miles 46 330 Ships in 10 - 15 working days

This monograph is the result of eight years of bibliographical and field research concerning several behavioural ecology aspects of the Palaearctic falcons. For a while, this book grew along with "The Lanner falcon" published in 2015 and revised in 2017. In both books the main aim was to provide a clear overview of the biology and ecology of these species. In fact in the last 20 years, the number of publications on falcons has grown tremendously and, in parallel, also those belonging to the so-called "grey literature". The number of people involved is also increased by including both academics and nature lovers. Many previously published books emphasized identification, and offered little insights on the behavioural and ecological aspects of the species. Very often, the research on behavioural ecology remains closed within the confines of academic community. By contrast, a multitude of basic data is scattered in countless articles published in local magazines. Many falcon species are easy to observe and study (such as kestrels) but others are more rare and localized. In order to understand the survival strategies adopted by this group of avian predators, it is necessary not to lose sight of the overall picture. This book tries to explain the different survival strategies by examining, through a few essential chapters, some crucial aspects for all species. The first chapter provides information on the genus Falco, its genetics, evolution and morphological peculiarities. The other chapters deal with reproductive strategies, competition, exploitation of resources, dispersal patterns, communication and sociality. One of the main objectives of this book is to produce an accessible but scholarly curated source of reference. By understanding the most common species, it is possible to provide a working framework for rarer, and especially threatened, falcon species.

Marmosets and Tamarins - Systematics, Behaviour, and Ecology (Hardcover): Anthony B. Rylands Marmosets and Tamarins - Systematics, Behaviour, and Ecology (Hardcover)
Anthony B. Rylands
R4,894 Discovery Miles 48 940 Ships in 10 - 15 working days

Starting with concise species accounts for all the marmoset and tamarin monkeys, this important new book then goes on to review their geographical distributions and still-contested taxonomy, along with comparative reviews of vocalizations, scent-marking, mating systems, infant care and development, social organization, and behaviour and ecology in the wild. As several of these small primates are rare or threatened, these subjects are strongly relevant to their management in captivity as well as for understanding natural populations. This is the first volume for several years to review current knowledge of this family, which comprises 52 species and subspecies found from Panama to northeastern Paraguay to southern Brazil.

Marine Benthic Vegetation - Recent Changes and the Effects of Eutrophication (Hardcover, 1996 ed.): Winfried Schramm, Pieter N.... Marine Benthic Vegetation - Recent Changes and the Effects of Eutrophication (Hardcover, 1996 ed.)
Winfried Schramm, Pieter N. Nienhuis
R5,411 Discovery Miles 54 110 Ships in 18 - 22 working days

Increasing amounts of various types of wastes and pollutants including nutrients enter the coastal waters via rivers, direct discharges from land drainage systems, diffuse land runoff, dumping and via the atmosphere. This has led to coastal eutrophication and in extreme cases to hypertrophication. Until recently, coastal eutrophication and the resulting effects on marine macrophytes were mainly treated as local short-term problems. However, the local nearshore problems developed into overall coastal and inshore phenomena, and recently we have been facing coastal eutrophication problems on a global scale.
This book is the first comprehensive document, systematically covering the entire coastline of Europe, on the effects of eutrophication on the marine benthic vegetation.

Neotropical Insect Galls (Hardcover, 2014): Geraldo Wilson Fernandes, Jean Carlos Santos Neotropical Insect Galls (Hardcover, 2014)
Geraldo Wilson Fernandes, Jean Carlos Santos
R4,125 Discovery Miles 41 250 Ships in 18 - 22 working days

The book brings to light the most recent findings on the biogeography, biodiversity, host plant induction and natural history of gall inducing insects in the Neotropical region.We attempt to summarize the work done so far in the region, promote several syntheses on many aspects such as host induction, host specialization, distribution among the several vegetation types and zones, the origin of super hosts and the mechanisms leading to geographical patterns in their distribution.Furthermore, the book constructs new perspectives for deeper understanding of galling insect evolutionary ecology and biogeopgraphy in the region."

Human-Wildlife Interactions - From Conflict to Coexistence (Hardcover, 2nd edition): Michael R Conover, Denise O. Conover Human-Wildlife Interactions - From Conflict to Coexistence (Hardcover, 2nd edition)
Michael R Conover, Denise O. Conover
R4,820 Discovery Miles 48 200 Ships in 10 - 15 working days

Offers knowledge on how to resolve human-wildlife conflicts through wildlife damage management. Provides examples of how human-wildlife conflicts can be alleviated by using an integrated approach Discusses management options including employing lethal methods; distributing supplemental food; changing the behavior of either humans or wildlife; and excluding or repelling wildlife. Backed by numerous case studies, informative side bars and full color illustrations. Uses brand new case studies to illustrate the benefits of an integrated approach to wildlife management for resolving wildlife problems.

Perspectives in Ethology - Volume 11: Behavioral Design (Hardcover, 1995 ed.): N.S. Thompson Perspectives in Ethology - Volume 11: Behavioral Design (Hardcover, 1995 ed.)
N.S. Thompson
R4,049 Discovery Miles 40 490 Ships in 18 - 22 working days

'A book rich and various in ideas and substance...It belongs on the shelf of anyone wanting to keep up with what is happening in ethology.'-Bioscience, from a review of an earlier volume Beginning with Volume 11, Nicholas S. Thompson takes over the editorship of this remarkable series. For this volume, contributors bring fresh perspectives to the subject of natural design.

Sketches of Nature - A Geneticist's Look at the Biological World During a Golden Era of Molecular Ecology (Hardcover):... Sketches of Nature - A Geneticist's Look at the Biological World During a Golden Era of Molecular Ecology (Hardcover)
John C. Avise
R824 Discovery Miles 8 240 Ships in 10 - 15 working days

This visually appealing book recounts the history of molecular ecology and evolution as seen through the personal lens of one of its most prolific practitioners, who has studied a panorama of creatures ranging from corals, sponges, and other invertebrates to a wide variety of vertebrate animals including numerous birds, mammals, herps, and fishes. The sketches are of two types: evocative drawings of the animals themselves, and more than 230 written abstracts summarizing the author's eclectic research on ecological-genetic topics spanning the microevolutionary to macroevolutionary. With the abstracts arranged by organismal group and placed in chronological order, the chapters in this book lead readers on a fascinating historical journey into the realm of molecular genetics as applied across the past four decades to intriguing questions in ecology, evolution, animal behavior, and natural history.

Ethnoprimatology - Primate Conservation in the 21st Century (Hardcover, 1st ed. 2016): Michel T. Waller Ethnoprimatology - Primate Conservation in the 21st Century (Hardcover, 1st ed. 2016)
Michel T. Waller
R5,802 Discovery Miles 58 020 Ships in 10 - 15 working days

The list of challenges facing nonhuman primates in the 21st century is a long one. The expansion of palm oil plantations to feed a growing consumer class is eating away at ape and monkey habitats in Southeast Asia and Central Africa. Lemurs are hunted for food in the poorest parts of Madagascar while monkeys are used as medicine in Brazil. Traditional cultural beliefs are maintaining demand for animal body parts in West African markets while viral YouTube videos of "cute" and "cuddly" lorises have increased their market value as pets and endangered their populations. These and other issues are addressed in this book by leading researchers in the field of ethnoprimatology, the study of human/nonhuman primate interactions that combines traditional primatological methodologies with cultural anthropology in an effort to better understand the nuances of our economic, ritualistic, and ecologic relationships.

Blue-Green Infrastructure Across Asian Countries - Improving Urban Resilience and Sustainability (Hardcover, 1st ed. 2022):... Blue-Green Infrastructure Across Asian Countries - Improving Urban Resilience and Sustainability (Hardcover, 1st ed. 2022)
Shalini Dhyani, Mrittika Basu, Harini Santhanam, Rajarshi DasGupta
R5,237 Discovery Miles 52 370 Ships in 18 - 22 working days

This edited book discusses Blue-Green Infrastructure (BGI) from conception to implementation in building resilience and urban sustainability. The book emphasizes on infrastructures, institutions, and perceptions as three main pillars of implementing and managing successful BGI, with a special focus on Asia. The book highlights concepts as well as field-based experiences from different parts of Asia by experts, with a special focus on advances and opportunities in advancing BGI, challenges and constraints, followed by case studies on BGI mainstreaming. It addresses sustainable water management, multiscale environmental design, environmental risk assessment, and finally understanding policy implications and concerns for BGI mainstreaming in growing urban sprawls of the region. There has been growing global momentum and recognition of Blue-Green Infrastructure (BGI) as a multifunctional Nature-based Solution (NbS) with multiple co-benefits. There is strong evidence from many urban centres of Europe, USA, China, and South Africa demonstrating that mainstreaming BGI can help in addressing growing vulnerability of urban areas by ensuring safety, resilience, and sustainability for urban residents in the warming world. This book is a timely contribution for researchers, students, scholars, urban planners, consultants, and policy makers in the fields of environment, resilience, urban planning, climate adaptation, and sustainability science.

Forest Pest and Disease Management in Latin America - Modern Perspectives in Natural Forests and Exotic Plantations (Hardcover,... Forest Pest and Disease Management in Latin America - Modern Perspectives in Natural Forests and Exotic Plantations (Hardcover, 1st ed. 2020)
Sergio A. Estay
R4,029 Discovery Miles 40 290 Ships in 18 - 22 working days

By providing multiple economic goods and ecosystem services, Latin American forests play a key role in the environmental, social and economic welfare of the region's countries. From the tropical forests of Central America to the Mediterranean and temperate vegetation of the southern cone, these forests face a myriad of phytosanitary problems that negatively impact on both conservation efforts and forest industry. This book brings together the perspectives of several Latin American researchers on pest and disease management. Each chapter provides modern views of the status and management alternatives to problems as serious as the impact of introduced exotic insects and diseases on Pinus and Eucalyptus plantations throughout the continent, and the emergence of novel insect outbreaks in tropical and temperate native forests associated with global warming. It is a valuable guide for researchers and practitioners working on forest health in Latin America and around the world.

Ecological Modelling Applied to Entomology (Hardcover, 2014): Claudia P. Ferreira, Wesley A. C. Godoy Ecological Modelling Applied to Entomology (Hardcover, 2014)
Claudia P. Ferreira, Wesley A. C. Godoy
R3,938 R3,407 Discovery Miles 34 070 Save R531 (13%) Ships in 10 - 15 working days

Insects, when studied from the ecological perspective, provide a great opportunity for scientific studies emphasizing population theory. The simple fact of being successful organisms for their ability to colonize different habitats or even for their high reproductive potential, increases the interest of ecologists in conducting studies focused on population and community level. Mathematical models are powerful tools that can capture the essence of many biological systems and investigate ecological patterns associated to ecological stability dependent on endogenous and exogenous factors. This proposal comes from the idea of adding experiences of researchers interested in working at the interface between mathematical and computation theory and problems centered on entomology, showing how mathematical modelling can be an important tool for understanding population dynamics, behavior, pest management, spatial structure and conservation.

The Ecology of Large Herbivores in South and Southeast Asia (Hardcover, 1st ed. 2016): Farshid Ahrestani, Mahesh Sankaran The Ecology of Large Herbivores in South and Southeast Asia (Hardcover, 1st ed. 2016)
Farshid Ahrestani, Mahesh Sankaran
R4,658 Discovery Miles 46 580 Ships in 10 - 15 working days

Large terrestrial mammalian herbivores play critical roles in ecosystems by acting as regulators of energy and nutrient cycles, modulators of plant community composition and grassland-woodland transitions, agents of seed dispersal, and as prey for large carnivores. Though large herbivores represent a prominent component of mammalian assemblages throughout South and Southeast Asia, little is known about their roles in ecosystems in the region. This volume presents, for the first time, a collection of studies on the ecology of the rich and diverse large herbivore assemblages of South and Southeast Asia. Prepared by experts on herbivores of the region, it covers a comprehensive range of topics, including their evolutionary history, behavioural, nutritional, and population ecology, patterns of diversity across environmental gradients, roles as seed dispersers and regulators of plant growth, community compositions, and their conservation in the face of hunting and global change.

The Ecology of Playful Childhood - The Diversity and Resilience of Caregiver-Child Interactions  among the San of Southern... The Ecology of Playful Childhood - The Diversity and Resilience of Caregiver-Child Interactions among the San of Southern Africa (Hardcover, 1st ed. 2020)
Akira Takada
R2,658 Discovery Miles 26 580 Ships in 18 - 22 working days

While studies of San children have attained the peculiar status of having delineated the prototype for hunter-gatherer childhood, relatively few serious ethnographic studies of San children have been conducted since an initial flurry of research in the 1960s and 1970s. Based on the author's long-term field research among several San groups of Southern Africa, this book reconsiders hunter-gatherer childhood using "play" as a key concept. Playfulness pervades the intricate practices of caregiver-child interactions among the San: immediately after birth, mothers have extremely close contact with their babies. In addition to the mother's attentions, other people around the babies actively facilitate gymnastic behavior to soothe them. These distinctive caregiving behaviors indicate a loving, indulgent attitude towards infants. This also holds true for several language genres of the San that are used in early vocal communication. Children gradually become involved in various playful activities in groups of children of multiple ages, which is the major locus of their attachment after weaning; these playful activities show important similarities to the household and subsistence activities carried out by adults. Rejuvenating studies of San children and hunter-gatherer childhood and childrearing practices, this book aims to examine these issues in detail, ultimately providing a new perspective for the understanding of human sociality.

Ecology of Ungulates - A Handbook of Species in Eastern Europe and Northern and Central Asia (Hardcover, 2003 ed.): Leonid M.... Ecology of Ungulates - A Handbook of Species in Eastern Europe and Northern and Central Asia (Hardcover, 2003 ed.)
Leonid M. Baskin, Kjell Danell
R5,385 Discovery Miles 53 850 Ships in 18 - 22 working days

This handbook presents an up-to-date review of the ecology and behavior of ungulates inhabiting eastern Europe and northern and central Asia, a vast area covering one sixth of the Earth. It provides detailed descriptions of 26 ungulate species focusing on quantitative data and condensing presentations of the autecology of the species, in order to facilitate comparisons between species, including data from several areas. Each species description includes data on geographical range and variability of body measurements over its range; preferred biotopes and evaluations of limiting factors of the abiotic environment; descriptions of social and territorial behavior; feeding features including lists of used plants; parameters of breeding in different parts of the range; factors of mortality with information on predators, diseases and parasites; and dynamics of numbers and harvesting in all parts of the range.

Jungle - How Tropical Forests Shaped World History - and Us (Hardcover): Patrick Roberts Jungle - How Tropical Forests Shaped World History - and Us (Hardcover)
Patrick Roberts
R655 Discovery Miles 6 550 Ships in 10 - 15 working days

'A bold, ambitious and truly wonderful history of the world' Peter Wohlleben, author of The Hidden Life of Trees 'A fascinating story and a crucial revision of the momentous importance of tropical forests to human history' Lewis Dartnell, author of Origins _________________________ Jungle tells the remarkable story of the world's tropical forests, from the arrival of the first plants millions of years ago to the role of tropical forests in the evolution of the world's atmosphere, the dinosaurs, the first mammals and even our own species and ancestors. Highlighting provocative new evidence garnered from cutting-edge research, Dr Roberts shows, for example, that our view of humans as 'savannah specialists' is wildly wrong, and that the 'Anthropocene' began not with the Industrial Revolution, but potentially as early as 6,000 years ago in the tropics. We see that the relationship between humankind and 'jungles' is deep-rooted, that we are all connected to their destruction, and that we must all act to save them. Urgent, clear-sighted and original, Jungle challenges the way we think about the world - and ourselves. _________________________ 'Welcome to the "Jungle" - a breathtaking book' Mark Maslin, author of How to Save Our Planet 'Timely, readable and highly relevant' Steve Brusatte, author of The Rise and Fall of the Dinosaurs 'Its revelations and stories will stir, rearrange and populate your mind for years to come' Paul Hawken, editor of Drawdown 'Brilliant ... it delivers a timely warning about our abuse of the environment' David Abulafia, author of The Great Sea 'Finally, a book on rainforests that does justice to their majesty and importance' Simon Lewis, co-author of The Human Planet

Theory-Based Ecology - A Darwinian approach (Hardcover): Liz Pasztor, Zoltan Botta-Dukat, Gabriella Magyar, Tamas Czaran, Geza... Theory-Based Ecology - A Darwinian approach (Hardcover)
Liz Pasztor, Zoltan Botta-Dukat, Gabriella Magyar, Tamas Czaran, Geza Meszena
R3,522 Discovery Miles 35 220 Ships in 10 - 15 working days

Ecology is in a challenging state as a scientific discipline. While some theoretical ecologists are attempting to build a definition of ecology from first principles, many others are questioning even the feasibility of a general and universal theory. At the same time, it is increasingly important that ecology is accurately and functionally defined for a generation of researchers tackling escalating environmental problems in the face of doubt and disagreement. The authors of Theory-Based Ecology have written a textbook that presents a robust, modern, and mathematically sound theory of ecology, maintaining a strong link between empirical data, models, and theory. It is firmly based in Darwinian thought, since it was Darwin who first revealed the ecological principles of the origin of species, and gave the evolution of diversity a process-based, mechanistic explanation. The authors base their synthetic theory of Darwinian ecology on seven key principles: exponential growth, growth regulation, inherited individual differences, finiteness and stochasticity, competitive exclusion, robust coexistence, and constraints and trade-offs. Within this solid conceptual framework, they integrate classic and actual empirical knowledge from ecology and evolutionary biology, clarifying methodological and mathematical detail in clear and helpful text boxes. A wealth of illustrated examples pertaining to different organisational levels (alleles, clones and species) helps to explain how the principles operate. This is an invaluable resource for graduate level students as well as professional researchers in the fields of ecology, genetics, evolutionary ecology, and mathematical biology.

The Book of Vanishing Species - Illustrated Lives (Hardcover): Beatrice Forshall The Book of Vanishing Species - Illustrated Lives (Hardcover)
Beatrice Forshall
R747 R653 Discovery Miles 6 530 Save R94 (13%) Ships in 9 - 17 working days

__________________ Our Earth is more beautiful and more diverse than we can possibly conceive of. The Book of Vanishing Species is a stunning homage to the planet's most mysterious, bizarre and wondrous creatures and plants. Their stories are captivating, from the eyeless and tiny dragonlike olm to the hawksbill turtle, whose gender will be determined by the temperature of the sand it is born in. These species may have survived for hundreds of thousands of years by cleverly adapting to their environments, but their future remains far from certain. The book brings to life red cranes as they dance and bow for the sheer joy of movement, trees that breathe out a haze of misty atmosphere for insects that only feast on one kind of flower, a deep-ocean snail quietly building its shell from iron... and each one of them is illuminated with an exquisite illustration. As you turn the pages, there emerges a network of life that stretches across and around the planet in a dazzling web of existence. This is both a love letter to life on Earth, and an urgent summons to protect what is precious and lovely in this world.

How Life Increases Biodiversity - An Autocatalytic Hypothesis (Hardcover): David Seaborg How Life Increases Biodiversity - An Autocatalytic Hypothesis (Hardcover)
David Seaborg
R5,067 Discovery Miles 50 670 Ships in 10 - 15 working days

Describes a hypothesis that ecosystems maximize biodiversity Suggests modified version of the dominant paradigm in population biology and evolution Discusses specific examples of events and phenomena that positively affect the diversity of life Presents a new view likely to elicit deeper discussions of biodiversity

Aquatic Animal Nutrition - Organic Macro- and Micro-Nutrients (Hardcover, 1st ed. 2022): Christian E.W. Steinberg Aquatic Animal Nutrition - Organic Macro- and Micro-Nutrients (Hardcover, 1st ed. 2022)
Christian E.W. Steinberg
R6,017 Discovery Miles 60 170 Ships in 10 - 15 working days

As sequel to Aquatic Animal Nutrition - A Mechanistic Perspective from Individuals to Generations, the present treatise on organic macro- and micronutrients continues the unique cross fertilization of aquatic ecology/ecophysiology and aquaculture. This treatise considers proteins and their constituents, carbohydrates from mono- to polysaccharides, fatty acids from free acids to fat, and waxes. It becomes obvious that these organic nutrients are more than only simple fuel for the metabolism of animals; rather, their constituents have messenger and controlling function for the actual consuming individual and even for succeeding generations. This aspect will become particularly clear by putting the organisms under consideration back into their ecosystem with their interrelationships and interdependencies. Furthermore, micronutrients, such as vitamins and nucleotides as well as exogenous enzymes, are in the focus of this volume with known and still-to-be-discovered controlling physiological and biomolecular functions. Aquatic Animal Nutrition - Organic Macro and Micro Nutrients addresses se veral gaps in nutritional research and practice. One major gap is the lack of com mon research standards and protocols for nutritional studies so that virtually incomparable approaches have to be compared. This applies also to the studied animals, since most approaches disregard intraspecific variabilities and the existence of epimutations in farmed individuals. Furthermore, recalling the Mechanistic Perspective from Individuals to Generations, dietary benefits and deficiencies have effects on succeeding generations. In most studies, this long-term and sustainable aspect is overruled by pure short-term production aspects. By comparing nutritional behavior and success of fishes and invertebrates, Aqua tic Animal Nutrition points out different metabolic pathways in these animal groups and discusses how, for instance, fishes would benefit when having some successful metabolic pathway of invertebrates. Application of novel ge ne tic techniques will help turn this vision into reality. However, a widely missing link in the current nutritional research is epigenetics regarding transgenerational heritages of acquired morphological and physiological properties. To in crease public acceptance, nutritional optimization of farmed animals based on this mechanism, rather than genetical engineering, appears promising.

Ecology of Atlantic Salmon and Brown Trout - Habitat as a template for life histories (Hardcover, Edition.): Bror Jonsson, Nina... Ecology of Atlantic Salmon and Brown Trout - Habitat as a template for life histories (Hardcover, Edition.)
Bror Jonsson, Nina Jonsson
R9,857 Discovery Miles 98 570 Ships in 10 - 15 working days

Destruction of habitat is the major cause for loss of biodiversity including variation in life history and habitat ecology. Each species and population adapts to its environment, adaptations visible in morphology, ecology, behaviour, physiology and genetics. Here, the authors present the population ecology of Atlantic salmon and brown trout and how it is influenced by the environment in terms of growth, migration, spawning and recruitment. Salmonids appeared as freshwater fish some 50 million years ago. Atlantic salmon and brown trout evolved in the Atlantic basin, Atlantic salmon in North America and Europe, brown trout in Europe, Northern Africa and Western Asia. The species live in small streams as well as large rivers, lakes, estuaries, coastal seas and oceans, with brown trout better adapted to small streams and less well adapted to feeding in the ocean than Atlantic salmon. Smolt and adult sizes and longevity are constrained by habitat conditions of populations spawning in small streams. Feeding, wintering and spawning opportunities influence migratory versus resident lifestyles, while the growth rate influences egg size and number, age at maturity, reproductive success and longevity. Further, early experiences influence later performance. For instance, juvenile behaviour influences adult homing, competition for spawning habitat, partner finding and predator avoidance.
The abundance of wild Atlantic salmon populations has declined in recent years; climate change and escaped farmed salmon are major threats. The climate influences through changes in temperature and flow, while escaped farmed salmon do so through ecological competition, interbreeding and the spreading of contagious diseases. The authors pinpoint essential problems and offer suggestions as to how they can be reduced. In this context, population enhancement, habitat restoration and management are also discussed. The text closes with a presentation of what the authors view as major scientific challenges in ecological research on these species."

Invasive Predators in New Zealand - Disaster on Four Small Paws (Hardcover, 1st ed. 2019): Carolyn M. King Invasive Predators in New Zealand - Disaster on Four Small Paws (Hardcover, 1st ed. 2019)
Carolyn M. King
R2,709 Discovery Miles 27 090 Ships in 18 - 22 working days

The story of invasive species in New Zealand is unlike any other in the world. By the mid-thirteenth century, the main islands of the country were the last large landmasses on Earth to remain uninhabited by humans, or any other land mammals. New Zealand's endemic fauna evolved in isolation until first Polynesians, and then Europeans, arrived with a host of companion animals such as rats and cats in tow. Well-equipped with teeth and claws, these small furry mammals, along with the later arrival of stoats and ferrets, have devastated the fragile populations of unique birds, lizards and insects. Carolyn M. King brings together the necessary historical analysis and recent ecological research to understand this long, slow tragedy. As a comprehensive historical perspective on the fate of an iconic endemic fauna, this book offers much-needed insight into one of New Zealand's longest-running national crises.

Bat Evolution, Ecology, and Conservation (Hardcover, 2013 ed.): Rick A. Adams, Scott C. Pedersen Bat Evolution, Ecology, and Conservation (Hardcover, 2013 ed.)
Rick A. Adams, Scott C. Pedersen
R6,589 Discovery Miles 65 890 Ships in 10 - 15 working days

Recent advances in the study of bats have changed the way we understand this illusive group of mammals. This volume consist of 25 chapters and 57 authors from around the globe all writing on the most recent finding on the evolution, ecology and conservation of bats. The chapters in this book are not intended to be exhaustive literature reviews, but instead extended manuscripts that bring new and fresh perspectives. Many chapters consist of previously unpublished data and are repetitive of new insights and understanding in bat evolution, ecology and conservation. All chapters were peer-reviewed and revised by the authors. Many of the chapters are multi-authored to provide comprehensive and authoritative coverage of the topics.

Spatial Dynamics and Ecology of Large Ungulate Populations in Tropical Forests of India (Hardcover, 1st ed. 2021): N. Samba... Spatial Dynamics and Ecology of Large Ungulate Populations in Tropical Forests of India (Hardcover, 1st ed. 2021)
N. Samba Kumar, K. Ullas Karanth, James D. Nichols, Srinivas Vaidyanathan, Beth Gardner, …
R2,662 Discovery Miles 26 620 Ships in 18 - 22 working days

Large ungulates in tropical forests are among the most threatened taxa of mammals. Excessive hunting, degradation of and encroachments on their natural habitats by humans have contributed to drastic reductions in wild ungulate populations in recent decades. As such, reliable assessments of ungulate-habitat relationships and the spatial dynamics of their populations are urgently needed to provide a scientific basis for conservation efforts. However, such rigorous assessments are methodologically complex and logistically difficult, and consequently many commonly used ungulate population survey methods do not address key problems. As a result of such deficiencies, key parameters related to population distribution, abundance, habitat ecology and management of tropical forest ungulates remain poorly understood. This book addresses this critical knowledge gap by examining how population abundance patterns in five threatened species of large ungulates vary across space in the tropical forests of the Nagarahole-Bandipur reserves in southwestern India. It also explains the development and application of an innovative methodology - spatially explicit line transect sampling - based on an advanced hierarchical modelling under the Bayesian inferential framework, which overcomes common methodological deficiencies in current ungulate surveys. The methods and results presented provide valuable reference material for researchers and professionals involved in studying and managing wild ungulate populations around the globe.

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