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Book ELF Communications System Ecological Monitoring Program

Download or read book ELF Communications System Ecological Monitoring Program written by John E. Zapotosky and published by . This book was released on 1996 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Nutrient Cycling and Plant Nutrition in Forest Ecosystems

Download or read book Nutrient Cycling and Plant Nutrition in Forest Ecosystems written by Scott X. Chang and published by MDPI. This book was released on 2018-04-27 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Urban and Periurban Forest Diversity and Ecosystem Services" that was published in Forests

Book Changes in Forest Ecosystem Nutrition

Download or read book Changes in Forest Ecosystem Nutrition written by Friederike Lang and published by Frontiers Media SA. This book was released on 2021-10-18 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Master s Theses Directories

Download or read book Master s Theses Directories written by and published by . This book was released on 1992 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Masters Theses in the Pure and Applied Sciences

Download or read book Masters Theses in the Pure and Applied Sciences written by W. H. Shafer and published by Springer Science & Business Media. This book was released on 1993 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 36 reports (for thesis year 1991) a total of 11,024 thesis titles from 23 Canadian and 161 US universities. The organization of the volume, as in past years, consists of thesis titles arranged by discipline, and by university within each discipline. The titles are contributed by any and all a

Book Nutrient Cycling in Forest Ecosystems

Download or read book Nutrient Cycling in Forest Ecosystems written by Robert G. Qualls and published by MDPI. This book was released on 2020-12-03 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: The long-term productivity of forest ecosystems depends on the cycling of nutrients. The effect of carbon dioxide fertilization on forest productivity may ultimately be limited by the rate of nutrient cycling. Contemporary and future disturbances such as climatic warming, N-deposition, deforestation, short rotation sylviculture, fire (both wild and controlled), and the invasion of exotic species all place strains on the integrity of ecosystem nutrient cycling. Global differences in climate, soils, and species make it difficult to extrapolate even a single important study worldwide. Despite advances in the understanding of nutrient cycling and carbon production in forests, many questions remain. The chapters in this volume reflect many contemporary research priorities. The thirteen studies in this volume are arranged in the following subject groups: • N and P resorption from foliage worldwide, along chronosequences and along elevation gradients; • Litter production and decomposition; • N and P stoichiometry as affected by N deposition, geographic gradients, species changes, and ecosystem restoration; • Effects of N and P addition on understory biomass, litter, and soil; • Effects of burning on soil nutrients; • Effects of N addition on soil fauna.

Book Environmental Protection Research Catalog Indexes

Download or read book Environmental Protection Research Catalog Indexes written by Smithsonian Science Information Exchange and published by . This book was released on 1972 with total page 1478 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Snow Ecology

    Snow Ecology

    Book Details:
  • Author : H. G. Jones
  • Publisher : Cambridge University Press
  • Release : 2001-01-15
  • ISBN : 9780521584838
  • Pages : 272 pages

Download or read book Snow Ecology written by H. G. Jones and published by Cambridge University Press. This book was released on 2001-01-15 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: A multidisciplinary 2001 overview of life in, on and under snow for anyone interested in the cryosphere.

Book Trends in Growth and Soil Nutrients Following Fire and Logging

Download or read book Trends in Growth and Soil Nutrients Following Fire and Logging written by Alexandra Morley Hume and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the impact of natural and anthropogenic disturbance on soil fertility and tree growth is critical to the sustainability of forest management, yet there remains much uncertainty regarding how both harvesting and wildfire affect soil nutrient dynamics, espe-cially over several decades and in varying overstory types. Historically, wildfire has been the dominant stand-replacing disturbance and an important mechanism of ecosystem renewal. However, intensive forest harvesting is replacing fire as the primary disturbance in many parts of the world, sparking concerns about nutrient depletion and decreased site productivity associated with biomass removals. I conducted a global meta-analysis of northern forest ecosystems to examine the ef-fects of forest harvesting on total concentrations and stoichiometric ratios of soil carbon ([C]), nitrogen ([N]), and phosphorus ([P]) relative to natural, uncut control stands, and whether these effects differed as a function of harvest intensity, soil depth, overstory type, and time since harvesting. I then used an age chronosequence from 7- to 33-years-old to ex-amine and compare the effects of clearcut harvesting and fire on soil nutrient concentrations and tree growth in three predominant upland boreal stand types (dominated by deciduous or coniferous trees, or a combination of both) during early stand development. The results of the meta-analysis indicated that harvesting negatively affects [C], [N], and [P] in the forest floor soil layer, but has positive or neutral effects on the mineral soils layer, except for when it is coupled with fire disturbance (through post-fire salvage logging or prescribed burn following harvest), which resulted in strong, negative effects on mineral soil [C] and [N]. The negative effect of harvesting on forest floor nutrients increased with harvesting intensity. Time since harvesting had a positive effect on soil [C] and [N], but less so for [P], which likely requires more time to recover given its reliance on inputs from min-eral weathering. Our chronosequence study also highlighted the important role of stand age (i.e. time since disturbance). Although fire resulted in more dramatic effects on soil nutrient concentra-tions and stand basal area than harvesting in the 7-year-old stands, these differences con-verged in the 15- and 33-year-old stands. Similar to the meta-analysis, the effects of disturb-ance were most profound in the forest floor layer, and temporal trends differed between bio-logically controlled nutrients (C and N), which recovered rapidly and linearly, and nutrients that are more geochemically controlled (P, K, and Ca). The results of both studies indicated that conifer stands are more sensitive to nutrient loss following disturbance than deciduous stands, and mixedwood stands are intermediate. Our findings highlight the importance of harvest intensity and rotation length on long-term soil nutrient health when managing northern forest ecosystems, particularly in conifer stands.

Book Bibliography of Agriculture

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1976 with total page 1732 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Forest Management for Climate Change Mitigation

Download or read book Forest Management for Climate Change Mitigation written by Yixiang Wang and published by Springer Nature. This book was released on with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Forest and Rangeland Soils of the United States Under Changing Conditions

Download or read book Forest and Rangeland Soils of the United States Under Changing Conditions written by Richard V. Pouyat and published by Springer Nature. This book was released on 2020-09-02 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book synthesizes leading-edge science and management information about forest and rangeland soils of the United States. It offers ways to better understand changing conditions and their impacts on soils, and explores directions that positively affect the future of forest and rangeland soil health. This book outlines soil processes and identifies the research needed to manage forest and rangeland soils in the United States. Chapters give an overview of the state of forest and rangeland soils research in the Nation, including multi-decadal programs (chapter 1), then summarizes various human-caused and natural impacts and their effects on soil carbon, hydrology, biogeochemistry, and biological diversity (chapters 2–5). Other chapters look at the effects of changing conditions on forest soils in wetland and urban settings (chapters 6–7). Impacts include: climate change, severe wildfires, invasive species, pests and diseases, pollution, and land use change. Chapter 8 considers approaches to maintaining or regaining forest and rangeland soil health in the face of these varied impacts. Mapping, monitoring, and data sharing are discussed in chapter 9 as ways to leverage scientific and human resources to address soil health at scales from the landscape to the individual parcel (monitoring networks, data sharing Web sites, and educational soils-centered programs are tabulated in appendix B). Chapter 10 highlights opportunities for deepening our understanding of soils and for sustaining long-term ecosystem health and appendix C summarizes research needs. Nine regional summaries (appendix A) offer a more detailed look at forest and rangeland soils in the United States and its Affiliates.