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Effects Of Alternatives To Clearcutting On Invertebrate And Organic Detritus Transport From Headwaters In Southeastern Alaska
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Book Synopsis Effects of Alternatives to Clearcutting on Invertebrate and Organic Detritus Transport from Headwaters in Southeastern Alaska by : Jake Musslewhite
Download or read book Effects of Alternatives to Clearcutting on Invertebrate and Organic Detritus Transport from Headwaters in Southeastern Alaska written by Jake Musslewhite and published by . This book was released on 2004 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: We examined the transport of invertebrates and coarse organic detritus from headwater streams draining timber harvest units in a selective timber harvesting study, alternatives to clearcutting (ATC) in southeastern Alaska. Transport in 17 small streams (mean measured discharge range: 1.2 to 14.6 L/s) was sampled with 250- m-mesh drift nets in spring, summer, and fall near Hanus Bay at an ATC installation on Catherine and Baranof Islands. Samples were taken before (1996) and after (1999, 2000) nine timber harvesting treatments were applied. Invertebrate and organic detritus drift densities and community composition were used to assess treatment effects. A comparison of drift densities before and after treatment showed year-to-year differences comparable to natural variation at other sites in this study, but no clear relationship to intensity or type of timber harvest treatments. Natural variation in drift densities prevented detection of any potential timber harvesting effects. Coefficients of variation showed transport was most variable among streams, followed by seasons and then days. A trend toward an increase in the proportion of true flies (Diptera) and a decrease in the proportion of mayflies (Ephemeroptera) was seen in more intensive treatments. Although transport rates were extremely variable, a mean of 220 mg invertebrate dry mass and 18 g detritus per stream per day was being transported downstream. The transport of this material suggests that headwaters are potential source areas of aquatic and terrestrial invertebrates and detritus, linking upland ecosystems with habitats commonly fish bearing) lower in the catchment.
Book Synopsis General Technical Report PNW-GTR by :
Download or read book General Technical Report PNW-GTR written by and published by . This book was released on 2004 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Balancing Ecosystem Values written by and published by . This book was released on 2005 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: Balancing Ecosystem Values: Innovative Experiments for Sustainable Forestry is a compendium of more than 40 contributions from Asia, Europe, and North America. The theme encompasses experiments implemented at an operational scale to test ecological, social, or economic responses to silvicultural treatments designed to balance the complex set of objectives currently targeted in sustainable forest management. Several invited and plenary papers emphasize the variety of outcomes demanded by the public, as well as the essential role that these long-term studies will play in allowing natural resource managers to make better-informed, science-based decisions. A broad spectrum of silvicultural treatments and systems are covered, as are simulation runs with different types of models and discussion about design challenges for scaling up from stands to landscapes. Diverse forest ecosystems, stand structures and plant, animal, and fungal species are also considered. The conference included 2 days in the field where participants saw several types of the comprehensive field experiments firsthand. The conference concluded with a critique from state, private, and public land managers.
Book Synopsis Density Management in the 21st Century by :
Download or read book Density Management in the 21st Century written by and published by . This book was released on 2013 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since adoption of the Northwest Forest Plan (NWFP) in the early 1990s, there has been a fundamental shift in forest management practices on federal lands in western Oregon and Washington. Commoditydriven clearcut regeneration harvests have given way to thinnings intended to enhance development of late-successional forest habitats and to conserve important aquatic and riparian ecosystems. Density Management in the 21st Century: West Side Story presents abstracts and peer reviewed papers from a regional conference highlighting more than twenty years of research related to forest thinning in the NWFP area. Presentations from the BLM Density Management and Riparian Buffer Study provide a focal point, with presentations from additional studies providing for a more complete overview of the west-side thinning science. The contributions are organized as five topical themes: The Regional and Landscape Context for Density Management in the Northwest Forest Plan Era; Implementation and Influences of Density Management in the Terrestrial Ecosystem; Riparian and Aquatic Ecosystems and their Responses to Thinning and Buffers; Socioeconomics and Operations; and Thinning and Adaptation. Collectively, the contributions summarize many important forest dynamics and ecosystem responses to partial overstory removals. Interactions between aquatic and riparian ecosystem conservation measures and upland harvest are emphasized. Targeting resource management practitioners, decision-makers and researchers, the collected works provide a reference to the current and future roles and issues of density management as a tool for forest ecosystem management.
Book Synopsis Analysis of Coniferous Forest Ecosystems in the Western United States by : Robert L. Edmonds
Download or read book Analysis of Coniferous Forest Ecosystems in the Western United States written by Robert L. Edmonds and published by . This book was released on 1982 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Conservation of Freshwater Fishes by : Gerard P. Closs
Download or read book Conservation of Freshwater Fishes written by Gerard P. Closs and published by Cambridge University Press. This book was released on 2016 with total page 601 pages. Available in PDF, EPUB and Kindle. Book excerpt: A global assessment of the current state of freshwater fish biodiversity and the opportunities and challenges to conservation.
Download or read book Stream Corridor Restoration written by and published by National Technical Info Svc. This book was released on 1998 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document is a cooperative effort among fifteen Federal agencies and partners to produce a common reference on stream corridor restoration. It responds to a growing national and international interest in restoring stream corridors.
Book Synopsis Biodiversity and Coarse Woody Debris in Southern Forests by :
Download or read book Biodiversity and Coarse Woody Debris in Southern Forests written by and published by DIANE Publishing. This book was released on 1996 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Ecological Characterization of Rocky Mountain Montane and Subalpine Wetlands by :
Download or read book An Ecological Characterization of Rocky Mountain Montane and Subalpine Wetlands written by and published by . This book was released on 1986 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Riparian Areas by : National Research Council
Download or read book Riparian Areas written by National Research Council and published by National Academies Press. This book was released on 2002-10-10 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Clean Water Act (CWA) requires that wetlands be protected from degradation because of their important ecological functions including maintenance of high water quality and provision of fish and wildlife habitat. However, this protection generally does not encompass riparian areasâ€"the lands bordering rivers and lakesâ€"even though they often provide the same functions as wetlands. Growing recognition of the similarities in wetland and riparian area functioning and the differences in their legal protection led the NRC in 1999 to undertake a study of riparian areas, which has culminated in Riparian Areas: Functioning and Strategies for Management. The report is intended to heighten awareness of riparian areas commensurate with their ecological and societal values. The primary conclusion is that, because riparian areas perform a disproportionate number of biological and physical functions on a unit area basis, restoration of riparian functions along America's waterbodies should be a national goal.
Book Synopsis Managing Young Upland Forests in Southeast Alaska for Wood Products, Wildlife, Aquatic Resources and Fishes by : Mark Steven Wipfli
Download or read book Managing Young Upland Forests in Southeast Alaska for Wood Products, Wildlife, Aquatic Resources and Fishes written by Mark Steven Wipfli and published by . This book was released on 2002 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CWE written by and published by . This book was released on 1998 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Methods in Stream Ecology by : F. Richard Hauer
Download or read book Methods in Stream Ecology written by F. Richard Hauer and published by Academic Press. This book was released on 2011-04-27 with total page 894 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methods in Stream Ecology, Second Edition, provides a complete series of field and laboratory protocols in stream ecology that are ideal for teaching or conducting research. This updated edition reflects recent advances in the technology associated with ecological assessment of streams, including remote sensing. In addition, the relationship between stream flow and alluviation has been added, and a new chapter on riparian zones is also included. The book features exercises in each chapter; detailed instructions, illustrations, formulae, and data sheets for in-field research for students; and taxanomic keys to common stream invertebrates and algae. With a student-friendly price, this book is key for all students and researchers in stream and freshwater ecology, freshwater biology, marine ecology, and river ecology. This text is also supportive as a supplementary text for courses in watershed ecology/science, hydrology, fluvial geomorphology, and landscape ecology. Exercises in each chapter Detailed instructions, illustrations, formulae, and data sheets for in-field research for students Taxanomic keys to common stream invertebrates and algae Link from Chapter 22: FISH COMMUNITY COMPOSITION to an interactive program for assessing and modeling fish numbers
Book Synopsis Successes, Limitations, and Frontiers in Ecosystem Science by : Michael L. Pace
Download or read book Successes, Limitations, and Frontiers in Ecosystem Science written by Michael L. Pace and published by Springer Science & Business Media. This book was released on 2013-12-01 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecosystem research has emerged in recent decades as a vital, successful, and sometimes controversial approach to environmental science. This book emphasizes the idea that much of the progress in ecosystem research has been driven by the emergence of new environmental problems that could not be addressed by existing approaches. By focusing on successes and limitations of ecosystems studies, the book explores avenues for future ecosystem-level research.
Author :Food and Agriculture Organization of the United Nations Publisher :Food & Agriculture Org. ISBN 13 :9251348510 Total Pages :184 pages Book Rating :4.2/5 (513 download)
Book Synopsis A guide to forest–water management by : Food and Agriculture Organization of the United Nations
Download or read book A guide to forest–water management written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2021-08-24 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many people worldwide lack adequate access to clean water to meet basic needs, and many important economic activities, such as energy production and agriculture, also require water. Climate change is likely to aggravate water stress. As temperatures rise, ecosystems and the human, plant, and animal communities that depend on them will need more water to maintain their health and to thrive. Forests and trees are integral to the global water cycle and therefore vital for water security – they regulate water quantity, quality, and timing and provide protective functions against (for example) soil and coastal erosion, flooding, and avalanches. Forested watersheds provide 75 percent of our freshwater, delivering water to over half the world’s population. The purpose of A Guide to Forest–Water Management is to improve the global information base on the protective functions of forests for soil and water. It reviews emerging techniques and methodologies, provides guidance and recommendations on how to manage forests for their water ecosystem services, and offers insights into the business and economic cases for managing forests for water ecosystem services. Intact native forests and well-managed planted forests can be a relatively cheap approach to water management while generating multiple co-benefits. Water security is a significant global challenge, but this paper argues that water-centered forests can provide nature-based solutions to ensuring global water resilience.
Book Synopsis Impacts of Construction Activities in Wetlands of the United States by : Rezneat M. Darnell
Download or read book Impacts of Construction Activities in Wetlands of the United States written by Rezneat M. Darnell and published by . This book was released on 1976 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Impacts of Sediment and Nutrients on Biota in Surface Waters of the United States by : Edward G. Farnworth
Download or read book Impacts of Sediment and Nutrients on Biota in Surface Waters of the United States written by Edward G. Farnworth and published by . This book was released on 1979 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
