Catalogue Search | MBRL
Are you sure you want to remove the book from the shelf?
{{itemTitle}}
1,626,778
result(s) for
"Populations"
Sort by:
How population change will transform our world
In How Population Will Transform Our World, Sarah Harper looks at fertility rates and age structures of populations in different regions of the world against the backdrop of urbanization and climate change, drawing out the profound implications and challenges for societies, economies, and the environment in the decades to come.
eBook
Population aging : is Latin America ready?
The past half-century has seen enormous changes in the demographic makeup of Latin America and the Caribbean (LAC). In the 1950s, LAC had a small population of about 160 million people, less than today's population of Brazil. Two-thirds of Latin Americans lived in rural areas. Families were large and women had one of the highest fertility rates in the world, low levels of education, and few opportunities for work outside the household. Investments in health and education reached only a small fraction of the children, many of whom died before reaching age five. Since then, the size of the LAC population has tripled and the mostly rural population has been transformed into a largely urban population. There have been steep reductions in child mortality, and investments in health and education have increased, today reaching a majority of children. Fertility has been more than halved and the opportunities for women in education and for work outside the household have improved significantly. Life expectancy has grown by 22 years. Less obvious to the casual observer, but of significance for policy makers, a population with a large fraction of dependent children has evolved into a population with fewer dependents and a very large proportion of working-age adults. This overview seeks to introduce the reader to three groups of issues related to population aging in LAC. First is a group of issues related to the support of the aging and poverty in the life cycle. Second is the question of the health transition. Third is an understanding of the fiscal pressures that are likely to accompany population aging and to disentangle the role of demography from the role of policy in that process.
eBook
Ecological orbits : how planets move and populations grow
The main focus of the book is the presentation of the inertial view of population growth. This view provides a rather simple model for complex population dynamics, and is achieved at the level of the single species without invoking species interactions. An important part of the account is the maternal effect. Investment of mothers in the quality of their daughters makes the rate of reproduction of the current generation depend not only on the current environment, but also on the environment experienced by the previous generation.
eBook
The insect crisis : the fall of the tiny empires that run the world
\"A devastating exploration of how the collapse in insect populations around the world threatens everything from wild birds to the food on our plate. From the ants scurrying under leaf litter to the bees able to fly higher than Mount Kilimanjaro, insects are seemingly everywhere. Three out of four of the planet's known species are insects, but a torrent of recent evidence suggests this kaleidoscopic group of creatures is suffering the greatest existential crisis in its remarkable 400-million-year history. Oliver Milman delves into why insect numbers are plummeting and outlines the dire consequences of losing the tiny empires that hold life aloft on Earth. Along the way, readers encounter a researcher who collects insect guts from the windshields of cars, the bees sent on long-haul truck journeys to prop up our food supply, and a desperate attempt to move trees up mountains to save an iconic butterfly. The mounting losses threaten to unpick the web of life we rely upon. Illuminating and inspiring, The Insect Crisis is a wake-up call for all of us\"-- Provided by publisher.
Book
Monitoring animal populations and their habitats
In the face of so many unprecedented changes in our environment, the pressure is on scientists to lead the way toward a more sustainable future. Written by a team of ecologists, Monitoring Animal Populations and Their Habitats: A Practitioner's Guide provides a framework that natural resource managers and researchers can use to design monitoring programs that will benefit future generations by distilling the information needed to make informed decisions. In addition, this text is valuable for undergraduate- and graduate-level courses that are focused on monitoring animal populations. With the aid of more than 90 illustrations and a four-page color insert, this book offers practical guidance for the entire monitoring process, from incorporating stakeholder input and data collection, to data management, analysis, and reporting. It establishes the basis for why, what, how, where, and when monitoring should be conducted; describes how to analyze and interpret the data; explains how to budget for monitoring efforts; and discusses how to assemble reports of use in decision-making. The book takes a multi-scaled and multi-taxa approach, focusing on monitoring vertebrate populations and upland habitats, but the recommendations and suggestions presented are applicable to a variety of monitoring programs. Lastly, the book explores the future of monitoring techniques, enabling researchers to better plan for the future of wildlife populations and their habitats. Monitoring Animal Populations and Their Habitats: A Practitioner's Guide furthers the goal of achieving a world in which biodiversity is allowed to evolve and flourish in the face of such uncertainties as climate change, invasive species proliferation, land use expansion, and population growth.
eBook
Tenacious beasts : wildlife recoveries that change how we think about animals
\"Conventional wisdom is that wild animals are being wiped out. But conventional wisdom skips some important details. Wildlife is rebounding. Not everywhere. Not every species. But a handful of wildlife populations have reached numbers unimaginable in a century. Red deer in Europe, bison in North America, humpback whales in the Atlantic. They have all seen their populations explode. They are back from the brink, numbering in the tens, or even hundreds, of thousands. Their return thrills those who have rooted for their recovery. It terrifies those who grew comfortable without them. This book tracks-and tries to understand-these dramatic rebounds. It shines a light on species returning to forests and farms, prairies and oceans, rivers and cities. It asks how these transformations can be happening and what they have to teach\"-- Provided by publisher.
Book
Genetic structure and selection in subdivided populations
Various approaches have been developed to evaluate the consequences of spatial structure on evolution in subdivided populations. This book is both a review and new synthesis of several of these approaches, based on the theory of spatial genetic structure. François Rousset examines Sewall Wright's methods of analysis based on F-statistics, effective size, and diffusion approximation; coalescent arguments; William Hamilton's inclusive fitness theory; and approaches rooted in game theory and adaptive dynamics. Setting these in a framework that reveals their common features, he demonstrates how efficient tools developed within one approach can be applied to the others.
Rousset not only revisits classical models but also presents new analyses of more recent topics, such as effective size in metapopulations. The book, most of which does not require fluency in advanced mathematics, includes a self-contained exposition of less easily accessible results. It is intended for advanced graduate students and researchers in evolutionary ecology and population genetics, and will also interest applied mathematicians working in probability theory as well as statisticians.
eBook