Humans as Components of Ecosystems

Highlighting the importance to ecological studies of incorporating humans and their effects on ecosystems, leading experts from a variety of disciplines address a number of important issues, including:* the prominent role of humans in the function of ecosystems on Earth* why humans have been ignored in ecological studies* approaches taken by social scientists, historians, geographers, economists, and anthropologists in the study of human activities* the emergence of a new ecological paradigm accommodating human activities* methods for studying subtle human effects, and human- populated ecosystems * future research and training required to include humans effectively as components of ecological systems. Of interest to students and researchers in ecology, and to policy-makers and environmental managers. In addition, it makes social scientists aware of new opportunties for integrating their ideas with those of ecologists.

1 Introduction: Scope and Need for an Ecology of Subtle Human Effects and Populated Areas.- Section I The Human Factor: Perception and Processes.- 2 The History and Present Entanglements of Some General Ecological Perspectives.- 3 An Exceptionally Powerful Biotic Factor.- 4 Environmental Change: The Human Factor.- 5 The Iceberg and the Titanic: Human Economic Behavior in Ecological Models.- 6 Ecosystems and Human Actions.- 7 The Human Component of Ecosystems.- Section II Approaches to the Study of Humans as Components of Ecosystems.- 8 Discovery of the Subtle.- 9 Land-use History and Forest Transformations in Central New England.- 10 Variability in Lake Ecosystems: Complex Responses by the Apical Predator.- 11 Humans as a Component of the Lake Titicaca Ecosystem: A Model System for the Study of Environmental Deterioration.- 12 Nitrogen Loading of Rivers as a Human-Driven Process.- 13 Humans: Capstone Strong Actors in the Past and Present Coastal Ecological Play.- 14 Modification of Nitrogen Cycling at the Regional Scale: The Subtle Effects of Atmospheric Deposition.- 15 The Application of the Ecological Gradient Paradigm to the Study of Urban Effects.- 16 The Process of Plant Colonization in Small Settlements and Large Cities.- 17 Ecological Implications of Landscape Fragmentation.- Section III Implications for Ecosystem Management and Construction.- 18 Integration of Social and Ecological Factors: Dynamic Area Models of Subtle Human Influences on Ecosystems.- 19 Human Influences on Ecosystems: Dealing With Biodiversity.- 20 "Natural" or "Healthy" Ecosystems: Are U.S. National Parks Providing Them?.- 21 Restoration as a Technique for Identifying and Characterizing Human Influences on Ecosystems.- 22 Biosphere 2 and the Study of Human/Ecosystem Dynamics.- SectionIV Overview.- 23 Part I: A Social Scientist's Perspective.- II: A Human Ecologist's Perspective.- III: A Marine Ecologist's Perspective-Humans as Capstone-Species.- IV: A Theoretical Ecologist's Perspective: Toward a Unified Paradigm for Subtle Human Effects and an Ecology of Populated Areas.- 24 Humans as Components of Ecosystems: A Synthesis.