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Science, Agriculture, and Food Security
This book examines the differing concepts of food security and the practicalities, policies, and resources that shape issues of food security. It begins with discussion of the nature of food security, its components, and related concepts such as self-sufficiency and global carrying capacity. It then reviews food consumption patterns in developed nations and developing regions, and discusses the complexities of determining what constitutes an adequate diet, taking into account recommended dietary allowances, variability in food composition, dietary balance and imbalance, diet and disease, nutrient deficiencies, intolerances, and food allergies. The book also reviews divergent concepts of sust...
Climate Change and Northern Fish Populations
These documents summarize some of the recent studies of the relationships among climate, the aquatic environment, and the dynamics of fish populations. The studies are mostly from the North Pacific ocean, but there are reports of investigations from the North Atlatic Ocean and from fresh water. Various papers include numerous examples of the relationships between fish abundance trends and the environment.
Methods of Modifying Habitat to Benefit the Great Lakes Ecosystem
This is a compilation of 47 methods of modifying habitat to benefit the Great Lakes ecosystem. The information is intended to raise awareness of Canada-US progress toward restoration objectives in the Great Lakes, and describes methods for rehabilitating, restoring, enhancing, mitigating or preserving habitat. For each project the following information is provided: project title, contact information, agencies involved, restoration goal, project type, background and rationale, regulatory considerations, criteria, project design, implementation, degree of environmental intervention, costs, biological assessment, measures of success, and key references.
Atlantic Halibut (Hippoglossus Hippoglossus) and Pacific Halibut (H. Stenolepis) and Their North American Fisheries
Atlantic halibut and Pacific halibut off the Atlantic and Pacific coasts of North America share many biological characteristics. The conventional separation of the halibut into separate species is not uniformly accepted. Reproduction and early life history are nearly identical, although the extensive drift of Pacific halibut eggs and larvae and countermigration as juveniles have not been demonstrated for the Atlantic halibut. Adult halibut undergo migration from winter spawning grounds along the upper continental slope to summer feeding grounds on the continental shelf. The two halibuts show the same pattern of age and growth. They exhibit different trophic selectivity, as small Atlantic hal...
Flora of the Yukon Territory
This work covers geology and vegetation of the vascular plants of the Yukon Territory. It should be of interest to botanical scientists, students and travellers interested in biodiversity, and for rare and endangered species wildlife management.
Le Golfe Du Saint-Laurent--petit Océan Ou Grand Estuaire?
Proceedings of a workshop, the scientific reviews and the contributed papers presented at the symposium. The document presents a brief historical summary of marine research in the Gulf; reports the discussions, conclusions and recommendations of the different working groups on oceanography (physics, biology, chemistry and sedimentology) and on the fishery (fish and invertebrates); then presents the discussions of each multidisciplinary working group, centered around how the St. Lawrence system may be used as a natural laboratory which will contribute to the solution of major long-term problems of conservation of natural resources and of the quality of the environment.
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