By Carl Safina
Part odyssey, half pilgrimage, this epic own narrative follows the author's exploration of coasts, islands, reefs, and the sea's abyssal depths. Scientist and fisherman Carl Safina takes readers on a world trip of discovery, probing for fact concerning the world's altering seas, deftly weaving experience, technological know-how, and political analysis.
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Extra resources for Song for the Blue Ocean: Encounters Along the World's Coasts and Beneath the Seas
The relatively battered runs are to the south. at the primary coast and within the southern a part of the province, hundreds of thousands of small breeding populations were extinguished and over 600 runs are faltering and in danger; and in japanese B. C. all salmon populations within the Canadian reaches of the Columbia River have been thoroughly bring to an end through U. S. dams and are actually extinct. In Washington, Oregon, California, and Idaho, greater than 300 salmon populations are at reasonable to excessive threat of extinction within the area, and 100 significant populations of salmon and anadromous trout have already been snuffed. purely sixteen percentage of the runs are usually not recognized to be declining. Reflective of ways undesirable issues have got, a contemporary research outlined salmon runs as “healthy” whether that they had declined by means of as much as two-thirds yet have been now strong. yet the majority of the hundred or so “healthy” populations face habitat degradation. there's a trend. styles, really. One, the summer season runs—those that come in the course of low flows and look forward to months to spawn—are faring worst. , the location ordinarily deteriorates the farther south you cross. Alaskan runs are healthiest. California is hurting the main, with just one “healthy” run. A wave of extinctions is spreading up the West Coast of North American from the southern a part of the diversity, touring in a northerly path like a foul an infection. extra styles: Populations breeding close to the coast are typically than these working into the a ways inside. Populations from greater rivers, just like the San Joaquin—Sacramento, California’s Klamath, and the Columbia-Snake, are extinct in a better percent in their former diversity than these from shorter, smaller rivers. Populations the place juveniles remain for prolonged sessions in freshwater are worse off than those who move quick to sea after hatching. Efforts to opposite the declines were a variety of, dear, and customarily useless. Many “interlocking units of debilitating causes,” because the Canadian fisheries scientist J. R. Brett acknowledged, devastated the Columbia River’s nice salmon runs. Overfishing used to be the 1st. quickly, river diversions for irrigation all started not just competing for water yet drawing 1000's of thousands of salmon onto farm fields (some farmers beloved the loose fertilizer). This keeps even this day. Then there are dams, such a lot particularly those who remade the Columbia Basin. Pollution—from pulp turbines, agricultural insecticides, silt, and stream-putrefying cattle—and vast wooded area destruction around out the salmon’s significant difficulties. for this reason, efforts to revive, reestablish, or perhaps simply preserve salmon runs confront the preeminent big-money pursuits of the sector. now not strangely, the chance that individuals could hotel to the Endangered Species Act to aid stability the present development for salmon has spawned loads of, let's imagine, anger, over the act itself. the most challenge with the Endangered Species Act and our general mind set is that the majority recognition and funds visit saving the main at-risk populations.