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Abstract. This book focuses on 2 dominant global stresses: climatic change and landscape change and their implications. The book is divided into 6 sections and includes synthetic literature reviews, critical commentaries, arguments for particular research directions and the results of original research. The 1st section introduces the scale and scope of global change, and provides an overview of the connection between ecological processes, especially in terrestrial ecosystems, and the physical changes emphasized by atmospheric scientists concerned with climate warming. The next 4 sections explore the ecological and evolutionary processes that might act as key control points in the response of the biotic systems to global change. The 2nd section is concerned with physiological and population responses to environmental change and the 3rd section considers the many ways in which evolutionary genetics constrain or facilitate the adjustment of species to new environments and landscapes. The 4th section of the book embraces the perspectives of community and ecosystem ecology. The subsequent section on landscape change and habitat fragmentation includes a chapter in which classic insect host-parasitoid models are elaborated to illustrate how the details of climate and landscapes can alter species interactions. The final section addresses the context for population and community research on global change.