Jack Ahern – författare

The current literature compartmentalizes the complex issue of water and wastewater into its discrete components; technology, planning, policy, construction, economics, etc.  Considered from the perspective of sustainability, however, water in the urban environment must be approached as a single resource that can be continuously reused and recycled.  This book will be the first to capture all of the current work on this idea in a single, integrated, plan for designing the water-centric cities of the future.  From new construction to the retrofitting of existing systems, this book presents the case for a new urban relationship to water, one with a more sustainable connection to the environment and the hydrological cycle.  Through case studies of successfully planned and built systems around the world, the book will educate the reader about the need for a new approach to urban water management, and make the case that these changes are not only possible but imperative.

This practical handbook bridges the gap between those scientists who study landscapes and the planners and conservationists who must then decide how best to preserve and build environmentally-sound habitats. Until now, only a small portion of the relevant science has influenced the decision-making arenas where the future of our landscapes is debated and decided. The authors explain specific tools and concepts to measure a landscape's structure, form, and change over time. Metrics studied include patch richness, class area proportion, patch number and density, mean patch size, shape, radius of gyration, contagion, edge contrast, nearest neighbor distance, and proximity. These measures will help planners and conservationists make better land use decisions for the future.

How do you measure biodiversity, and why should landscape architects and planners care? What are the essential issues, the clearest terminology, and the most effective methods for biodiversity planning and design? How can they play a role in biodiversity conservation in a manner compatible with other goals? These are critical questions that Jack Ahern answers in this timely and useful book. Real-world case studies showcase biodiversity protection and restoration projects, both large and small, across the U.S.: the Woodland Park Zoo in Seattle, Washington; the Crosswinds Marsh Wetlands Mitigation Project in Wayne County, Michigan; the Florida Statewide Greenway System; and the Fort Devens Stormwater Project in Ayer, Massachusetts. Ahern shows how an interdisciplinary approach led by planners and designers with conservation biologists, restoration ecologists, and natural and social scientists can yield successful results and sustainable practices.Minimizing habitat loss and degradation - the principal causes of biodiversity decline - are at the heart of the planning and design processes and provide landscape architects and planners a chance to achieve their professional goals while taking a leading role in the environmental community.