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North American deserts—lands of little water—have long been home to a surprising diversity of aquatic life, from fish to insects and mollusks. With European settlement, however, water extraction, resource exploitation, and invasive species set many of these native aquatic species on downward spirals. In this book, conservationists dedicated to these creatures document the history of their work, the techniques and philosophies that inform it, and the challenges and opportunities of the future. A precursor to this book, Battle Against Extinction, laid out the scope of the problem and related conservation activities through the late 1980s. Since then, many nascent conservation programs have...
Many salmonids inhabit streams during the whole, or a substantial part of their lifetime. Streams, as networks of cold waters running over rifles, pools and tables of gravel, pebble and stony substratum, are fed by rainfall and snowmelt and may be subject to spates and droughts. Hence, these lotic systems are heterogeneous by nature and vary substantially in temperature and discharge along their environmental gradients. In these habitats, salmonids encounter suitable reproductive and feeding habitats where they exhibit a dizzying array of life‐history traits and an overwhelming variability in size, growth and density. Essentially predators upon organisms drifting across the water column, t...
The Devils Hole pupfish is one of the rarest vertebrate animals on the planet; its only natural habitat is a ten-by-sixty-foot pool near Death Valley, on the Nevada—California border. Isolation in Devils Hole made the fish different from its close genetic relatives, but as Devils Hole Pupfish explores, what has made the species a survivor is its many surprising connections to the people who have studied, ignored, protested or protected it.
Field guide of Freshwater fish.
In Rewilding North America, Dave Foreman takes on arguably the biggest ecological threat of our time: the global extinction crisis. He not only explains the problem in clear and powerful terms, but also offers a bold, hopeful, scientifically credible, and practically achievable solution. Foreman begins by setting out the specific evidence that a mass extinction is happening and analyzes how humans are causing it. Adapting Aldo Leopold's idea of ecological wounds, he details human impacts on species survival in seven categories, including direct killing, habitat loss and fragmentation, exotic species, and climate change. Foreman describes recent discoveries in conservation biology that call f...