This assessment is a summary of the accumulated scientific understanding of the estuary and Gulf of St. Lawrence. It discusses the extent of anthropogenic modifications to this marine environment, points out principal uncertainties that hinder our understanding, and identifies important regional environmental issues. Many assessments attempt to provide easy-to-understand information to a wide, non-specialist audience. Others are directed more specifically to scientists, but include a conclusions section written for non-scientists. This document offers something of a middle approach: it is intended to be understood by a non-specialist audience, albeit one with a general knowledge of contemporary science. At the same time, it gives the professional scientist a broad-scale synthesis of current information.

The largest estuary in the world, the Gulf of St Lawrence is defined broadly by an ecology that stretches from the upper reaches of the St Lawrence River to the Gulf Stream, and by a web of influences that reach from the heart of the continent to northern Europe. For more than a millennium, the gulf's strategic location and rich marine resources have made it a destination and a gateway, a cockpit and a crossroads, and a highway and a home. From Vinland the Good to the novels of Lucy Maud Montgomery, the Gulf has haunted the Western imagination. A transborder collaboration between Canadian and American scholars, The Greater Gulf represents the first concerted exploration of the environmental history – marine and terrestrial – of the Gulf of St Lawrence. Contributors tell many histories of a place that has been fished, fought over, explored, and exploited. The essays' defining themes resonate in today's charged atmosphere of quickening climate change as they recount stories of resilience played against ecological fragility, resistance at odds with accommodation, considered versus reckless exploitation, and real, imagined, and imposed identities. Reconsidering perceptions about borders and the spaces between and across land and sea, The Greater Gulf draws attention to a central place and part of North Atlantic and North American history. Contributors include Rainer Baehre (Memorial University of Newfoundland), Jack Bouchard (Folger Institute), Claire Campbell (Bucknell University), Caitlin Charman (Memorial University of Newfoundland), Jack Little (Simon Fraser University), Edward MacDonald (University of Prince Edward Island), Matthew McKenzie (University of Connecticut), Suzanne Morton (McGill University), Brian Payne (Bridgewater State University), John G. Reid (St. Mary's University), and Daniel Soucier (University of Maine).

Ecological indicators address ecosystems structure and/or function and are commonly used to provide synoptic information about their state. Through quantitative representations of either the forces that steer ecosystems, responses to forcing functions, or of previous, current, or future states of an ecosystem, indicators are expected to reveal conditions and trends that will help in development planning and decision making processes. Ecological indicators combine numerous environmental factors in a single value, which may be useful in terms of management and in the development of ecological concepts, compliant with the general public's understanding. Nevertheless, their application is not exempt of criticisms, the first of which is that aggregation results in an oversimplification of the ecosystem under observation. Ecological indicators must therefore be handled following the right criteria and in situations that are consistent with its intended use and scope; otherwise they may drive to confusing interpretations of data.

This United Nations report examines the current state of knowledge of the world's oceans, for policymakers, and provides a reference for marine science courses.

The North Atlantic coast of North America—commonly known as the Atlantic Coast—extends from Newfoundland and Labrador through the Maritime Provinces and the Northeastern United States south to Cape Hatteras. This North Atlantic region belongs to the sea. The maritime influence on climate, flora, and fauna is dominant — even far inland. Both on land and at sea, this region is where north meets south, where the great northern boreal forests intermingle with the southern coniferous-hardwood forests, and where the icy Labrador Current and the tropical Gulf Stream vie for supremacy and eventually mix. The Atlantic Coast draws upon the best and most up-to-date science on the ecology of the region as well as the author’s lifetime experience as a resident, biologist, and naturalist. The book explores the geological origins of the region, the two major forest realms, and the main freshwater and marine ecosystems, and describes the flora and fauna that characterize each habitat. It ends with a look at what has been lost and how the remaining natural heritage of the region might be conserved for the future.

Estuaries in every country exemplify the same paradox- they are among the most productive ecosystems and also among the most impacted by anthropogenic activities. And although estuarine biodiversity is key to the ecological and economic health of coastal regions, estuaries are exposed to toxic effluents transported by rivers from remote and nearby

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