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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.
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.
Remote photography and infrared sensors are widely used in the
sampling of wildlife populations worldwide, especially for cryptic
or elusive species. Guiding the practitioner through the entire
process of using camera traps, this book is the first to compile
state-of-the-art sampling techniques for the purpose of conducting
high-quality science or effective management. Chapters on the
evaluation of equipment, field sampling designs, and data analysis
methods provide a coherent framework for making inferences about
the abundance, species richness, and occupancy of sampled animals.
The volume introduces new models that will revolutionize use of
camera data to estimate population density, such as the newly
developed spatial capture-recapture models. It also includes richly
detailed case studies of camera trap work on some of the world's
most charismatic, elusive, and endangered wildlife species.
Indispensible to wildlife conservationists, ecologists, biologists,
and conservation agencies around the world, the text provides a
thorough review of the subject as well as a forecast for the use of
remote photography in natural resource conservation over the next
few decades.
Remote photography and infrared sensors are widely used in the
sampling of wildlife populations worldwide, especially for cryptic
or elusive species. Guiding the practitioner through the entire
process of using camera traps, this book is the first to compile
state-of-the-art sampling techniques for the purpose of conducting
high-quality science or effective management. Chapters on the
evaluation of equipment, field sampling designs, and data analysis
methods provide a coherent framework for making inferences about
the abundance, species richness, and occupancy of sampled animals.
The volume introduces new models that will revolutionize use of
camera data to estimate population density, such as the newly
developed spatial capture recapture models. It also includes richly
detailed case studies of camera trap work on some of the world s
most charismatic, elusive, and endangered wildlife species.
Indispensible to wildlife conservationists, ecologists, biologists,
and conservation agencies around the world, the text provides a
thorough review of the subject as well as a forecast for the use of
remote photography in natural resource conservation over the next
few decades."
Occupancy Estimation and Modeling is the first book to examine the
latest methods in analyzing presence/absence data surveys. Using
four classes of models (single-species, single-season;
single-species, multiple season; multiple-species, single-season;
and multiple-species, multiple-season), the authors discuss the
practical sampling situation, present a likelihood-based model
enabling direct estimation of the occupancy-related parameters
while allowing for imperfect detectability, and make
recommendations for designing studies using these models.
* Provides authoritative insights into the latest in estimation
modeling
* Discusses multiple models which lay the groundwork for future
study designs
* Addresses critical issues of imperfect detectibility and its
effects on estimation
* Explores the role of probability in estimating in detail
Analysis and Management of Animal Populations deals with the
processes involved in making informed decisions about the
management of animal populations. It covers the modeling of
population responses to management actions, the estimation of
quantities needed in the modeling effort, and the application of
these estimates and models to the development of sound management
decisions. The book synthesizes and integrates in a single volume
the methods associated with these themes, as they apply to
ecological assessment and conservation of animal populations.
Key Features
*Integrates population modeling, parameter estimation and
decision-theoretic approaches to management in a single, cohesive
framework
* Provides authoritative, state-of-the-art descriptions of
quantitative approaches to modeling, estimation and decision-making
* Emphasizes the role of mathematical modeling in the conduct of
science and management
* Utilizes a unifying biological context, consistent mathematical
notation, and numerous biological examples
Occupancy Estimation and Modeling: Inferring Patterns and Dynamics
of Species Occurrence, Second Edition, provides a synthesis of
model-based approaches for analyzing presence-absence data,
allowing for imperfect detection. Beginning from the relatively
simple case of estimating the proportion of area or sampling units
occupied at the time of surveying, the authors describe a wide
variety of extensions that have been developed since the early
2000s. This provides an improved insight about species and
community ecology, including, detection heterogeneity; correlated
detections; spatial autocorrelation; multiple states or classes of
occupancy; changes in occupancy over time; species co-occurrence;
community-level modeling, and more. Occupancy Estimation and
Modeling: Inferring Patterns and Dynamics of Species Occurrence,
Second Edition has been greatly expanded and detail is provided
regarding the estimation methods and examples of their application
are given. Important study design recommendations are also covered
to give a well rounded view of modeling.
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Dispersal (Hardcover)
Jean Clobert, Etienne Danchin, Andre A. Dhondt, James D. Nichols
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R4,553
Discovery Miles 45 530
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Ships in 10 - 15 working days
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Habitat fragmentation and global climate change are the two major
environmental threats to the persistence of species and ecosystems.
The probability of a species surviving such changes is strongly
dependent on its ability to track shifts in the environmental,
either by moving between patches of habitat or by rapidly adapting
to local condition. These 'solutions' to problems posed by
environmental change depend on dispersal propensity, motivating our
desire to better understand this important behavior. This book is a
comprehensive overview of the new developments in the study of
dispersal and the state-of-the-art research on the evolution of
this trait. The causes, mechanisms, and consequences of dispersal
at the individual, population, and species levels are considered.
The promise of new techniques and models for studying dispersal,
drawn from molecular biology and demography is explored.
Perspectives on the study of dispersal are offered from evolution,
conservation biology, and genetics. Throughout the book,
theoretical approaches are combined with empirical data, and
examples are included from as wide a range of species as possible.
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Dispersal (Paperback)
Jean Clobert, Etienne Danchin, Andre A. Dhondt, James D. Nichols
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R2,358
Discovery Miles 23 580
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Ships in 10 - 15 working days
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The ability of species to migrate has interested ecologists for many years. Now that so many species and ecosystems face major environmental change, the ability of species to adapt to these changes by dispersing, migrating, or moving between different patches of habitat can be crucial to ensuring their survival. This book provides a timely and wide-ranging overview of the study of dispersal and incorporates much of the latest research. The causes, mechanisms, and consequences of dispersal at the individual, population, species and community levels are considered. The potential of new techniques and models for studying dispersal, drawn from molecular biology and demography, is also explored. Perspectives and insights are offered from the fields of evolution, conservation biology and genetics. Throughout the book, theoretical approaches are combined with empirical data, and care has been taken to include examples from as wide a range of species as possible.
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Nadine Gordimer
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R398
R330
Discovery Miles 3 300
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