Overfishing. For the world’s oceans, it’s long been a worrisome problem with few answers. Many of the global fish stocks are at a dangerous tipping point, some spiraling toward extinction. But as older fishing fleets retire and new technologies develop, a better, more sustainable way to farm this popular protein has emerged to profoundly shift the balance. The Blue Revolution tells the story of the recent transformation of commercial fishing: an encouraging change from maximizing volume through unrestrained wild hunting to maximizing value through controlled harvesting and farming. Entrepreneurs applying newer, smarter technologies are modernizing fisheries in unprecedented ways. In many parts of the world, the seafood on our plates is increasingly the product of smart decisions about ecosystems, waste, efficiency, transparency, and quality. Nicholas P. Sullivan presents this new way of thinking about fish, food, and oceans by profiling the people and policies transforming an aging industry into one that is “post-industrial”—fueled by “sea-foodies” and locavores interested in sustainable, traceable, quality seafood. Catch quotas can work when local fishers feel they have a stake in the outcome; shellfish farming requires zero inputs and restores nearshore ecosystems; new markets are developing for kelp products, as well as unloved and “underutilized” fish species. Sullivan shows how the practices of thirty years ago that perpetuated an overfishing crisis are rapidly changing. In the book’s final chapters, Sullivan discusses the global challenges to preserving healthy oceans, including conservation mechanisms, the impact of climate change, and unregulated and criminal fishing in international waters. In a fast-growing world where more people are eating more fish than ever before, The Blue Revolution brings encouraging news for conservationists and seafood lovers about the transformation of an industry historically averse to change, and it presents fresh inspiration for entrepreneurs and investors eager for new opportunities in a blue-green economy.

The seemingly inexhaustible oceans have proved to be finite after all. Landings of wild fish have leveled off since the mid-1980s, and many stocks of fish are fished so heavily that their future is threatened. And yet the world’s appetite for fish has continued to increase, particularly as urban populations and incomes grow in developing countries. Aquaculture—fish farming—has arrived to meet this increased demand. Production of fish from aquaculture has exploded in the past 20 years and continues to expand around the world. But will aquaculture be sufficient to provide affordable fish to the world over the next 20 years? And what environmental and poverty problems will aquaculture face as it expands? Using a global model of supply and demand for food and feed commodities, this report projects the likely changes in the fisheries sector over the next two decades given present trends. As prices for most food commodities fall, fish prices are expected to rise, reflecting demand for fish that outpaces the ability of the world to supply it. Alternative scenarios using different assumptions are also investigated. The model shows that developing countries will consume and produce a much greater share of the world’s fish in the future, and trade in fish commodities will also increase. As aquaculture expands, especially in developing countries, environmental concerns such as effluent pollution, escaped farmed fish, land conversion, and pressure on stocks from fishmeal demand will only increase with time unless technologies and policies promote sustainable intensification. And small, poor producers are at risk of being excluded from rapidly growing export markets unless ways can be found to facilitate affordable certification of food safety and environmentally sound production.

Fifty years have passed since the first Earth Day, on 22 April 1970. This accessible, incisive and timely collection of essays brings together a diverse set of expert voices to examine how the Earth’s environment has changed over this past half century, and what lies in store for our planet over the coming fifty years. Earth 2020: An Insider’s Guide to a Rapidly Changing Planet responds to a public increasingly concerned about the deterioration of Earth’s natural systems, offering readers a wealth of perspectives on our shared ecological past, and on the future trajectory of planet Earth. Written by world-leading thinkers on the front-lines of global change research and policy, this multi-disciplinary collection maintains a dual focus: some essays investigate specific facets of the physical Earth system, while others explore the social, legal and political dimensions shaping the human environmental footprint. In doing so, the essays collectively highlight the urgent need for collaboration across diverse domains of expertise in addressing one of the most significant challenges facing us today. Earth 2020 is essential reading for everyone seeking a deeper understanding of the past, present and future of our planet, and the role of humanity in shaping this trajectory.

Papers presented to the IXth International Congress of Anthropological and Ethnological Sciences, Chicago, 1973.

Human-induced environmental change currently represents the single greatest threat to global biodiversity. Species are typically adapted to the local environmental conditions in which they have evolved. Changes in environmental conditions initially influence behaviour, which in turn affects species interactions, population dynamics, evolutionary processes and, ultimately, biodiversity. How animals respond to changed conditions, and how this influences population viability, is an area of growing research interest. Yet, despite the vital links between environmental change, behaviour, and population dynamics, surprisingly little has been done to bridge these areas of research. Behavioural Responses to a Changing World is the first book of its kind devoted to understanding behavioural responses to environmental change. The volume is comprehensive in scope, discussing impacts on both the mechanisms underlying behavioural processes, as well as the longer-term ecological and evolutionary consequences. Drawing on international experts from across the globe, the book covers topics as diverse as endocrine disruption, learning, reproduction, migration, species interactions, and evolutionary rescue.