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How Many People Can the Earth Support?
Discusses how many people the earth can support in terms of economic, physical, and environmental aspects.
Food Webs and Niche Space. (MPB-11), Volume 11
What is the minimum dimension of a niche space necessary to represent the overlaps among observed niches? This book presents a new technique for obtaining a partial answer to this elementary question about niche space. The author bases his technique on a relation between the combinatorial structure of food webs and the mathematical theory of interval graphs. Professor Cohen collects more than thirty food webs from the ecological literature and analyzes their statistical and combinatorial properties in detail. As a result, he is able to generalize: within habitats of a certain limited physical and temporal heterogeneity, the overlaps among niches, along their trophic (feeding) dimensions, can...
Community Food Webs
Food webs hold a central place in ecology. They describe which organisms feed on which others in natural habitats. This book describes recently discovered empirical regularities in real food webs: it proposes a novel theory unifying many of these regularities, as well as extensive empirical data. After a general introduction, reviewing the empirical and theoretical discoveries about food webs, the second portion of the book shows that community food webs obey several striking phenomenological regularities. Some of these unify, regardless of habitat. Others differentiate, showing that habitat significantly influences structure. The third portion of the book presents a theoretical analysis of ...
How Many People Can the Earth Support?
Examines the problem of the unprecedented rise in the world's population, showing how overpopulation will force future generations to make difficult choices among the competing values of economic development, environmental quality, and procreative freedom.
Science Magazine's State of the Planet 2006-2007
How often in today's environmental debates have you read that "the science is in dispute"-even when there is overwhelming consensus among scientists? Too often, the voice of science is diminished or diluted for the sake of politics, and the public is misled. Now, the most authoritative voice in U.S. science, Science magazine, brings you current scientific knowledge on today's most pressing environmental challenges, from population growth to climate change to biodiversity loss. Science Magazine's State of the Planet 2006-2007 is a unique contribution that brings together leading environmental scientists and researchers to give readers a comprehensive yet accessible overview of current issues....
Patch Dynamics
From the preface by Joel E. Cohen: "A century from now humanity will live in a managed - or mismanaged - global garden. We are debating the need to preserve tropical forests. Farming of the sea is providing an increasing part of our fish supply. We are beginning to control atmospheric emissions. In 100 years, we shall use novel farming practices and genetic engineering of bacteria to manipulate the methane production of rice fields. The continental shelf will be providing food, energy, possibly even living space. To make such intensive management possible will require massive improvements in data collection and analysis, and especially in our concepts. A century hence we will live on a wired...
