John Waldman, a professor of biology at Queens College, New York, works on the ecology and evolution of anadromous fishes, historical ecology, and urban waterways. Before joining Queens College, he worked for 20 years at the Hudson River Foundation for Science and Environmental Research. Waldman's books include Running Silver: Restoring Atlantic Rivers and Their Great Fish Migrations
, Heartbeats in the Muck: A Dramatic Look at the History, Sea Life, and Environment of New York Harbor
and The Dance of the Flying Gurnards: America's Coastal Curiosities and Beachside Wonders
More from John Waldman
Many hydroelectric dams produce modest amounts of power yet do enormous damage to rivers and fish populations. Why not take down these aging structures, build solar farms in the drained reservoirs, and restore the natural ecology of the rivers?
The prime cod fishing grounds of North America have been depleted or wiped out by overfishing and poor management. But in Arctic waters, Norway and Russia are working cooperatively to sustain a highly productive — and profitable — cod fishery.
Fishways on rivers in the U.S. Northeast are failing, with less than 3 percent of one key species making it upriver to their spawning grounds, according to a new study. The researchers’ findings provide a cautionary tale for other nations now planning big dam projects.
As agriculture and energy production have made strides toward becoming more sustainable, the world’s fisheries have lagged behind. But restoring our beleaguered oceans to health will require an emphasis on diversification and conservation — and a more sensible mix of fishing practices.
Once, on both sides of the Atlantic, fish such as salmon, eels, and, shad were abundant and played an important role in society, feeding millions and providing a livelihood for tens of thousands. But as these fish have steadily dwindled, humans have lost sight of their significance, with each generation accepting a diminished environment as the new norm.
They’re calling it “global weirding” – the way in which rising temperatures are causing species to change their ranges, the timing of their migrations, and the way they interact with other living things. And the implications of all this are only beginning to be understood.
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Photographer Robert Wintner documents the exquisite beauty and biodiversity of Cuba’s unspoiled coral reefs. View the gallery.
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The Warriors of Qiugang
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A three-part series Tainted Harvest
looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup. Read the series.