Download or read book Sediment Dynamics and Southern Steelhead Habitat Oncorhynchus Mykiss in the Mitilija Creek Watershed Southern California written by Justin Toby Minear and published by . This book was released on 2003 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book California Water Resources Center written by California Water Resources Center and published by . This book was released on 2003 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Resources Center Report written by and published by . This book was released on 1994 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Report written by California Water Resources Center and published by . This book was released on 2000 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Implications of Current Restoration Practices and Regulatory Policy for Recovery of the Federally Endangered Southern California Steelhead written by Stacie Michelle Fejtek and published by . This book was released on 2017 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: Policy, management, and restoration practices focused on the federally endangered southern California steelhead (Oncorhyncus mykiss) were reviewed, tested, and compiled to provide opportunities to capitalize on already existing tools for steelhead recovery and other protected species inhabiting southern California coastal watersheds. Review of the Similarity of Appearance Clause, a rarely used portion of the Endangered Species Act, could provide southern steelhead's landlocked resident form (native rainbow trout) with greater protection from take based on the difficulty in differentiating between the two life history stages. Southern steelhead meets inclusion criteria set forth by the act, but more importantly fills the need for a precautionary approach in managing a highly endangered species. Despite being a priority recovery action small dam removal is still subject to environmental review, but recent streamlining efforts through programmatic permitting could reduce the burden on restoration partners. In the absence of examples of small dam removal monitoring data National Marine Fisheries Service programmatic biological opinion for southern California was forced to implement precautionary thresholds on the amount of impounded sediment to avoid prolonged effects of sediment bleeding and loss of downstream habitat quality that may result under extended drought conditions. This research utilized low-cost, longstanding techniques to meet the monitoring requirements set forth in the programmatic opinion and added six small dam removal cases to support the finding of limited effects by impounded sediment on habitat quality downstream of dam removal sites. This study highlights the greater influence of upstream watershed inputs (land-use practices, roads, fires, etc.) on habitat quality rather than small dam removal impacts. Consideration of impacts and drivers on a watershed-wide scale (headwaters to ocean) is important for restoration targeting anadromous species like southern steelhead. A comparison of stream and wetland restoration issues identified common problems: climate change and process organization. Differences in permitting issues for streams and design concerns for wetlands are discussed in relation to the scale and geographical extent of habitat type in southern California. These are just a few examples of how rethinking lessons learned and reexamining already existing tools could aid in recovery of endangered species and maximize restoration dollars.
Download or read book The Big Five written by Clare Kathryn O'Reilly and published by . This book was released on 2010 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ecology of Juvenile Steelhead Oncorhynchus Mykiss written by Knut Marius Myrvold and published by . This book was released on 2014 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Identifying the processes by which populations are governed and the conditions under which they are operant is a primary interest in ecology and has obvious relevance for management. Anadromous Pacific salmonids represent a particularly imperiled taxon with large conservation interest, especially in the Columbia River Basin, USA. This project concerned the juvenile rearing stage of a population of threatened Snake River steelhead (Oncorhynchus mykiss) in the Lapwai Creek watershed, Idaho. The system is characterized by hot and dry summers, heterogeneous habitat conditions, and substantial differences in densities both within and among tributary streams. The primary goal of this research was to identify mechanistic linkages between individual- and population-level demographic parameters and their environment, and to understand how population processes operate to shape individual performance. The results showed that temperature-induced energetic costs posed constraints on individual growth, suggesting that energetic cost can offset the competitive advantages of large body size when food is a limiting factor. Secondly, density-dependent regulation of cohort size occurred under certain conditions but was not ubiquitous, suggesting population sizes below carrying capacity. The strength of the regulation was explained by environmental conditions and temperature. Thirdly, despite overall low densities, density dependence was manifested in depressed individual growth rates. Growth rates in both cohorts were negatively related to the total population densities, but were inconsistently affected by the densities of the other cohort. Fourthly, habitat-based controls on densities were operant across spatial scales. Whereas watershed topography and discharge regime best described the variation in subyearling densities, yearlings were better described by channel hydraulics. Finally, site fidelity was overall low, suggesting that a large proportion of the individuals were not territorial, and that the propensity to stay was better predicted by habitat factors than biotic factors. In conclusion, these results show an overall strong abiotic control on juvenile steelhead abundance in the study system, but the strength of these controls to vary substantially across time and space. The subsequent strength of the density-dependent processes depended on these abiotic controls. The combined effects of these abiotic and density-dependent controls constrained and shaped individual growth performance and movement decisions.
Download or read book Managing California s Water written by Ellen Hanak and published by Public Policy Instit. of CA. This book was released on 2011 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Los Angeles River written by Blake Gumprecht and published by JHU Press. This book was released on 2001-04-30 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Winner of the J. B. Jackson Prize from the Association of American Geographers Three centuries ago, the Los Angeles River meandered through marshes and forests of willow and sycamore. Trout spawned in its waters and grizzly bears roamed its shores. The bountiful environment the river helped create supported one of the largest concentrations of Indians in North America. Today, the river is made almost entirely of concrete. Chain-link fence and barbed wire line its course. Shopping carts and trash litter its channel. Little water flows in the river most of the year, and nearly all that does is treated sewage and oily street runoff. On much of its course, the river looks more like a deserted freeway than a river. The river's contemporary image belies its former character and its importance to the development of Southern California. Los Angeles would not exist were it not for the river, and the river was crucial to its growth. Recognizing its past and future potential, a potent movement has developed to revitalize its course. The Los Angeles River offers the first comprehensive account of a river that helped give birth to one of the world's great cities, significantly shaped its history, and promises to play a key role in its future.
Download or read book Inland Fishes of California written by Peter B. Moyle and published by Univ of California Press. This book was released on 2002-05-21 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: Table of contents
Download or read book Trout and Salmon of North America written by Robert Behnke and published by Simon and Schuster. This book was released on 2010-07-06 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This beautiful and definitive guide brings together the world's lead leading expert on North American trout and salmon, Robert Behnke, and the foremost illustrator in the field, Joseph Tomelleri. North America is graced with the greatest diversity of trout and salmon on earth. From tiny brook trout in mountain streams of the Northeast, to cutthroat trout in the rivers of the Rockies, to Chinook salmon of the Pacific, the continent is home to more than 70 types of trout and salmon. How this came to be, how they are related, and what makes them unique -- and so breathtaking -- is the story of Trout and Salmon of North America. The more than 100 illustrations of trout and salmon by Joseph Tomelleri showcased here exhibit a genius for detail, coloration, and proportion. Each portrait is made from field notes, streamside observations, photographs, and specimens collected by the artist. The result is a set of the most accurate and stunning illustrations of fish ever created. Robert Behnke has distilled 50 years of his research and writing about trout and salmon in completing this book. No one understands better than Behnke the diversity and conservation issues concerning these fishes or communicates so lucidly the biological wonders and complexities of their particular beauty. Also included are more than 40 richly detailed maps that clearly show the ranges of populations of trout and salmon throughout North America. An irresistible delight for anyone who appreciates natural history, Trout and Salmon of North America is a master guide to the natural elegance of our native fishes.
Download or read book Ecology Conservation and Restoration of Tidal Marshes written by Arnas Palaima and published by Univ of California Press. This book was released on 2012-09-08 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: The San Francisco Bay, the biggest estuary on the west coast of North America, was once surrounded by an almost unbroken chain of tidal wetlands, a fecund sieve of ecosystems connecting the land and the Bay. Today, most of these wetlands have disappeared under the demands of coastal development, and those that remain cling precariously to a drastically altered coastline. This volume is a collaborative effort of nearly 40 scholars in which the wealth of scientific knowledge available on tidal wetlands of the San Francisco Estuary is summarized and integrated. This book addresses issues of taxonomy, geomorphology, toxicology, the impact of climate change, ecosystem services, public policy, and conservation, and it is an essential resource for ecologists, environmental scientists, coastal policymakers, and researchers interested in estuaries and conserving and restoring coastal wetlands around the world.
Download or read book Environmental Flows written by Angela Arthington and published by Univ of California Press. This book was released on 2012-10-15 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental Flows describes the timing, quality, and quantity of water flows required to sustain freshwater and estuarine ecosystems and the human well-being and livelihoods that depend upon them. It answers crucial questions about the flow of water within and between different kinds of ecosystems. What happens when the flow or the availability of water is curtailed or diverted, either naturally or by human activity? How will climate change alter the availability of water and impact aquatic ecosystems? Methodological developments from the simplest hydrological formulas to large-scale frameworks that inform water management make this book a must-read for water managers and freshwater and estuarine ecologists contending with ever-changing conditions influencing the flow of water.
Download or read book King of Fish written by David Montgomery and published by Basic Books. This book was released on 2009-04-28 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: The salmon that symbolize the Pacific Northwest's natural splendor are now threatened with extinction across much of their ancestral range. In studying the natural and human forces that shape the rivers and mountains of that region, geologist David Montgomery has learned to see the evolution and near-extinction of the salmon as a story of changing landscapes. Montgomery shows how a succession of historical experiences -first in the United Kingdom, then in New England, and now in the Pacific Northwest -repeat a disheartening story in which overfishing and sweeping changes to rivers and seas render the world inhospitable to salmon. In King of Fish , Montgomery traces the human impacts on salmon over the last thousand years and examines the implications both for salmon recovery efforts and for the more general problem of human impacts on the natural world. What does it say for the long-term prospects of the world's many endangered species if one of the most prosperous regions of the richest country on earth cannot accommodate its icon species? All too aware of the possible bleak outcome for the salmon, King of Fish concludes with provocative recommendations for reinventing the ways in which we make environmental decisions about land, water, and fish.
Download or read book Upstream written by Langdon Cook and published by Ballantine Books. This book was released on 2017-05-30 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Finalist for the Washington State Book Award • From the award-winning author of The Mushroom Hunters comes the story of an iconic fish, perhaps the last great wild food: salmon. For some, a salmon evokes the distant wild, thrashing in the jaws of a hungry grizzly bear on TV. For others, it’s the catch of the day on a restaurant menu, or a deep red fillet at the market. For others still, it’s the jolt of adrenaline on a successful fishing trip. Our fascination with these superlative fish is as old as humanity itself. Long a source of sustenance among native peoples, salmon is now more popular than ever. Fish hatcheries and farms serve modern appetites with a domesticated “product”—while wild runs of salmon dwindle across the globe. How has this once-abundant resource reached this point, and what can we do to safeguard wild populations for future generations? Langdon Cook goes in search of the salmon in Upstream, his timely and in-depth look at how these beloved fish have nourished humankind through the ages and why their destiny is so closely tied to our own. Cook journeys up and down salmon country, from the glacial rivers of Alaska to the rainforests of the Pacific Northwest to California’s drought-stricken Central Valley and a wealth of places in between. Reporting from remote coastlines and busy city streets, he follows today’s commercial pipeline from fisherman’s net to corporate seafood vendor to boutique marketplace. At stake is nothing less than an ancient livelihood. But salmon are more than food. They are game fish, wildlife spectacle, sacred totem, and inspiration—and their fate is largely in our hands. Cook introduces us to tribal fishermen handing down an age-old tradition, sport anglers seeking adventure and a renewed connection to the wild, and scientists and activists working tirelessly to restore salmon runs. In sharing their stories, Cook covers all sides of the debate: the legacy of overfishing and industrial development; the conflicts between fishermen, environmentalists, and Native Americans; the modern proliferation of fish hatcheries and farms; and the longstanding battle lines of science versus politics, wilderness versus civilization. This firsthand account—reminiscent of the work of John McPhee and Mark Kurlansky—is filled with the keen insights and observations of the best narrative writing. Cook offers an absorbing portrait of a remarkable fish and the many obstacles it faces, while taking readers on a fast-paced fishing trip through salmon country. Upstream is an essential look at the intersection of man, food, and nature. Praise for Upstream “Invigorating . . . Mr. Cook is a congenial and intrepid companion, happily hiking into hinterlands and snorkeling in headwaters. Along the way we learn about filleting techniques, native cooking methods and self-pollinating almond trees, and his continual curiosity ensures that the narrative unfurls gradually, like a long spey cast. . . . With a pedigree that includes Mark Kurlansky, John McPhee and Roderick Haig-Brown, Mr. Cook’s style is suitably fluent, an occasional phrase flashing like a flank in the current. . . . For all its rehearsal of the perils and vicissitudes facing Pacific salmon, Upstream remains a celebration.”—The Wall Street Journal
Download or read book Secrets of the Oak Woodlands written by Kate Marianchild and published by Heyday Books. This book was released on 2013-08-15 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Californian may vacation in Yosemite, Big Sur, or Death Valley, but many of us come home to an oak woodland. Yet, while common, oak woodlands are anything but ordinary. In a book rich in illustration and suffused with wonder, author Kate Marianchild combines extensive research and years of personal experience to explore some of the marvelous plants and animals that the oak woodlands nurture. Acorn woodpeckers unite in marriages of up to ten mates and raise their young cooperatively. Ground squirrels roll in rattlesnake skins to hide their scent from hungry snakes. Manzanita's rust-colored, paper-thin bark peels away in time for the summer solstice, exposing sinuous contours that are cool to the touch even on the hottest day. Conveying up-to-the-minute scientific findings with a storyteller's skill, Marianchild introduces us to a host of remarkable creatures in a world close by, a world that "rustles, hums, and sings with the sounds of wild things."
Download or read book Aerial Photographic Coverage written by United States and published by . This book was released on 1977 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
