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Mountain ecosystems belong to the most endangered ecosystems in the world. Especially, the treeline ecotone acts as an indicator for environmental change. However, ecological processes in the treeline ecotone are not yet completely understood. The studies provided in this book may contribute to a better understanding of the interactions between vegetation, climate, fauna, and soils in the treeline ecotone. An introductory chapter is given on plants living under extreme conditions, climate change aspects, and methods for characterization of alpine soils. The following articles focus on mountainous areas in America, Europe and Asia. The Working Group on Mountain and Northern Ecosystems at the Insti- te of Landscape Ecology, University of Münster (Germany), has been working on topics related to the treeline ecotone for several decades. This period under the chairmanship of Friedrich-Karl Holtmeier has come to an end now when he retired in 2004. He initiated numerous studies in high mountains and in the North. Many of his students, who became infected by the ‘mountain virus’, will continue these investigations on ecological processes in the altitudinal and northern treeline ecotones. With this compilation of studies in mountain ecosystems we want to thank Friedrich-Karl Holtmeier for his excellent guidance in these cold and fascinating environments.
Mountain ecology. --- Timberline. --- Alpine timberline --- Alpine treeline --- Latitudinal timberline --- Latitudinal treeline --- Timber-line --- Tree line --- Treeline --- Forest ecology --- Mountain ecology --- Vegetation boundaries --- Alpine ecology --- Alpine region ecology --- Alpine regions --- Mountains --- Upland ecology --- Ecology --- Geology. --- Ecology. --- Endangered ecosystems. --- Geography. --- Biogeosciences. --- Geoecology/Natural Processes. --- Ecosystems. --- Geography, general. --- Cosmography --- Earth sciences --- World history --- Threatened ecosystems --- Biotic communities --- Nature conservation --- Balance of nature --- Biology --- Bionomics --- Ecological processes --- Ecological science --- Ecological sciences --- Environment --- Environmental biology --- Oecology --- Environmental sciences --- Population biology --- Geognosy --- Geoscience --- Natural history --- Geobiology. --- Ecology . --- Geoecology. --- Environmental geology. --- Biocenoses --- Biocoenoses --- Biogeoecology --- Biological communities --- Biomes --- Biotic community ecology --- Communities, Biotic --- Community ecology, Biotic --- Ecological communities --- Ecosystems --- Natural communities --- Geoecology --- Environmental protection --- Physical geology --- Biosphere
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Emerging from decades of intensive research into alpine timberlines, Trees at their Upper Limit presents a complete modern synthesis of current knowledge on the ecophysiology of tree growth and survival on high mountains in Europe. Including chapters on soil properties and the role or mycorrhiza, carbon assimilation and allocation, phytopathogens, and the impact of global change on photooxidative stress, the book builds on Tranquillini’s landmark 1979 publication, Physiological Ecology of the Alpine Timberline. By combining new techniques and insights with existing core knowledge the authors explore a range of current hypotheses on tree life limitation to promote a greater understanding of the underlying mechanisms determining the upper timberline. Amid growing realization that high elevation forests have a crucial role to play in protection against natural hazards, this book represents a timely contribution to the current literature on timberline research. Drawing together more than 25 years of work, this unique book sets a new standard on the ecophysiology of trees growing at the alpine timberline. Edited by field leaders Gerhard Wieser and Michael Tausz, the book will appeal to researchers and advanced students in the fields of botany, ecology and plant ecophysiology, as well as to a wider audience interested in understanding the responses of the timberline ecotone to climatic and demographic change.
Timberline --- Trees --- Mountain ecology. --- Ecophysiology --- Alpine ecology --- Alpine region ecology --- Alpine regions --- Mountains --- Upland ecology --- Dendrology --- Nursery stock --- Woody plants --- Arboriculture --- Forests and forestry --- Timber --- Alpine timberline --- Alpine treeline --- Latitudinal timberline --- Latitudinal treeline --- Timber-line --- Tree line --- Treeline --- Forest ecology --- Mountain ecology --- Vegetation boundaries --- Ecology --- Forests and forestry. --- Trees. --- Plant physiology. --- Plant Ecology. --- Forestry. --- Tree Biology. --- Plant Physiology. --- Botany --- Plants --- Forest land --- Forest lands --- Forest planting --- Forest production --- Forest sciences --- Forestation --- Forested lands --- Forestland --- Forestlands --- Forestry --- Forestry industry --- Forestry sciences --- Land, Forest --- Lands, Forest --- Silviculture --- Sylviculture --- Woodlands --- Woods (Forests) --- Agriculture --- Natural resources --- Afforestation --- Logging --- Tree crops --- Physiology --- Phytoecology --- Vegetation ecology --- Plant ecology. --- Floristic ecology
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Alpine treelines mark the low-temperature limit of tree growth and occur in mountains world-wide. Presenting a companion to his book Alpine Plant Life, Christian Körner provides a global synthesis of the treeline phenomenon from sub-arctic to equatorial latitudes and a functional explanation based on the biology of trees. The comprehensive text approaches the subject in a multi-disciplinary way by exploring forest patterns at the edge of tree life, tree morphology, anatomy, climatology and, based on this, modelling treeline position, describing reproduction and population processes, development, phenology, evolutionary aspects, as well as summarizing evidence on the physiology of carbon, water and nutrient relations, and stress physiology. It closes with an account on treelines in the past (palaeo-ecology) and a section on global change effects on treelines, now and in the future. With more than 100 illustrations, many of them in colour, the book shows alpine treelines from around the globe and offers a wealth of scientific information in the form of diagrams and tables. From the reviews of the companion book Alpine Plant Life by Christian Körner (2nd ed. 2003) ‘... well written with plenty of good quality photographs, graphs and diagrams. It hits a happy compromise in being accessible to novices in upland areas and/or plants but with sufficient depth to leave the reader feeling that they have got to grips with the topic. ... A superb textbook that should be read and used by all ecology students.’ Bulletin of the British Ecological Society, Vol. 35(1), 2004.
Forest ecology. --- Mountain ecology. --- Timberline. --- Botany --- Earth & Environmental Sciences --- Plant Ecology --- Alpine ecology --- Alpine region ecology --- Alpine regions --- Mountains --- Forests and forestry --- Alpine timberline --- Alpine treeline --- Latitudinal timberline --- Latitudinal treeline --- Timber-line --- Tree line --- Treeline --- Ecology --- Life sciences. --- Physical geography. --- Plant ecology. --- Forestry. --- Trees. --- Plant physiology. --- Geoecology. --- Environmental geology. --- Life Sciences. --- Plant Ecology. --- Plant Physiology. --- Tree Biology. --- Earth System Sciences. --- Geoecology/Natural Processes. --- Upland ecology --- Forest ecology --- Mountain ecology --- Vegetation boundaries --- Forests and forestry. --- Ecology. --- Balance of nature --- Biology --- Bionomics --- Ecological processes --- Ecological science --- Ecological sciences --- Environment --- Environmental biology --- Oecology --- Environmental sciences --- Population biology --- Forest land --- Forest lands --- Forest planting --- Forest production --- Forest sciences --- Forestation --- Forested lands --- Forestland --- Forestlands --- Forestry --- Forestry industry --- Forestry sciences --- Land, Forest --- Lands, Forest --- Silviculture --- Sylviculture --- Woodlands --- Woods (Forests) --- Agriculture --- Natural resources --- Afforestation --- Arboriculture --- Logging --- Timber --- Tree crops --- Trees --- Dendrology --- Nursery stock --- Woody plants --- Plants --- Physiology --- Phytoecology --- Vegetation ecology --- Geoecology --- Environmental protection --- Physical geology --- Geography --- Floristic ecology
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Mountain Timberlines is published as part of the broad area of research on the changing global climate and its impact on the environment. The upper timberline is the most conspicuous vegetation limit in high-mountain areas of all continents and islands, except for the Antarctic. The dynamics of timberline establishment and maintenance is being affected by global warming in a number of ways. From a global view point, the present timberline is far from being caused only by the current climate, but instead reflects also history of climate, human impact and local site conditions. It is the objective of the book to highlight the physiognomic and ecological variety of mountain timberlines as well as their regionally and locally varying heterogeneity and temporal dynamics thus giving a complex view of the global timberline pattern. After an introduction into the complexities of the subject, the history and present state of timberline research are outlined. Chapters on the tree species at timberline and on the relationship of timberline elevation to marcroclimate, climate character and the mass-elevation effect follow. The main chapter deals with the physiognomic and ecological differentiation of altitudinal timberlines, in particular with the timberline controlling physical and biological factors, their interactions and their influence on the spatial structures and temporal dynamics in the timberline ecotone. Also, the feedbacks of trees and tree stands on the timberline environment are considered. This is the base for understanding the response of timberlines to climatically driven changes, which are considered in the last chapters.
Forest ecology. --- Plant ecology. --- Timberline. --- Timberline --- Forest ecology --- Mountain plants --- Mountain ecology --- Botany --- Earth & Environmental Sciences --- Ecology --- Plant Ecology --- Ecophysiology --- Forests and forestry --- Alpine timberline --- Alpine treeline --- Latitudinal timberline --- Latitudinal treeline --- Timber-line --- Tree line --- Treeline --- Life sciences. --- Physical geography. --- Ecology. --- Landscape ecology. --- Trees. --- Climate change. --- Life Sciences. --- Landscape Ecology. --- Climate Change. --- Physical Geography. --- Tree Biology. --- Changes, Climatic --- Climate change --- Climate changes --- Climate variations --- Climatic change --- Climatic changes --- Climatic fluctuations --- Climatic variations --- Global climate changes --- Global climatic changes --- Climatology --- Climate change mitigation --- Teleconnections (Climatology) --- Dendrology --- Nursery stock --- Woody plants --- Arboriculture --- Timber --- Balance of nature --- Biology --- Bionomics --- Ecological processes --- Ecological science --- Ecological sciences --- Environment --- Environmental biology --- Oecology --- Environmental sciences --- Population biology --- Geography --- Biosciences --- Sciences, Life --- Science --- Environmental aspects --- Vegetation boundaries --- Climatic changes. --- Changes in climate --- Climate change science --- Ecology . --- Global environmental change
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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.
Research & information: general --- Biology, life sciences --- Forestry & related industries --- leaf stoichiometry --- Cyclocarya paliurus --- geographic variations --- natural populations --- climate variables --- nitrogen --- phosphorus --- N:P ratio --- soil stoichiometry --- soil nutrient --- nutrient limitations --- natural grassland --- natural forest --- soil fauna --- N addition --- soil profile --- community structure --- food resources --- poplar plantations --- experimental nitrogen addition --- understory plant growth --- plant nutrient --- nonstructural carbohydrates --- Alpine treeline --- Nitrogen --- Non-structural carbohydrates --- Phosphorus --- Potassium --- Remobilization --- Storage --- Upper limits --- nutrient resorption --- nitrogen and phosphorous --- planted forests --- climate zones --- plant functional types --- precipitation --- green leaf nutrient --- nitrogen deposition --- N and P colimitation --- leaf N:P stoichiometry --- soil N:P stoichiometry --- seasonal variations --- nutrition resorption --- ecological stoichiometry --- plant-soil feedback --- stand age --- Robinia pseudoacacia L. --- forests --- nutrients --- disturbance --- management --- diversity --- biomass --- soil properties --- experimental fires --- UV-spectroscopy analysis --- thermal infrared thermometer --- nitrogen and phosphorus addition --- understory plants --- stoichiometric ratio --- litter decomposition --- litter standing crop carbon --- conversion coefficient --- climatic factors --- Tibetan Plateau --- shrublands --- Cunninghamia lanceolata --- mixture effect --- nutrient cycling --- rhizosphere effect --- species competition
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Concerns have been raised with respect to the state of high-altitude and high-latitude treelines, as they are anticipated to undergo considerable modifications due to global changes, and especially due to climate warming. As high-elevation treelines are temperature-limited vegetation boundaries, they are considered to be sensitive to climate warming. As a consequence, in this future, warmer environment, an upward migration of treelines is expected because low air and root-zone temperatures constrain their regeneration and growth. Despite the ubiquity of climate warming, treeline advancement is not a worldwide phenomenon: some treelines have been advancing rapidly, others have responded sluggishly or have remained stable. This variation in responses is attributed to the potential interaction of a continuum of site-related factors that may lead to the occurrence of locally conditioned temperature patterns. Competition amongst species and below-ground resources have been suggested as additional factors explaining the variability in the movement of treelines. This Special Issue (book) is dedicated to the discussion of treeline responses to changing environmental conditions in different areas around the globe.
n/a --- tree seedling recruitment --- shrubline --- light quality --- higher altitude --- precipitation --- experimental rain exclusion --- Pinus cembra --- Changbai Mountain --- treeline dynamics --- fungal ecology --- thermal continentality --- tree regeneration --- elevational transect --- monitoring --- conifer shrub --- plant water availability --- permafrost --- foehn winds --- treeline --- Holocene --- nitrogen cycling --- carotenoids --- timberline --- 15N natural abundance --- spectrometer --- basal area increment --- palynology --- xylem embolism --- diversity --- elevational treeline --- European Alps --- temperature --- tree line --- winter stress --- photosynthetic pigments --- Pinus sibirica --- westerly winds --- relative air humidity --- ecosystem manipulation --- Larix decidua --- microsite --- polar treeline --- Central Austrian Alps --- Switzerland --- multi-stemmed growth form --- conifers --- forest edge --- history of treeline research --- soil drought --- dendroclimatology --- knowledge engineering --- Rocky Mountains --- apical control --- cloud --- postglacial --- alpine timberline --- space-for-time substitution --- climate change --- expert elicitation --- shoot elongation --- pit aspiration --- climate warming --- climate zone --- alpine treeline --- refilling --- Abies sibirica --- growth trend --- western Montana --- light quantity --- Picea abies --- Mediterranean climate --- forest climatology --- altitude --- environmental stress --- sub-Antarctic --- Erman’s birch --- photoinhibition --- tocopherol --- elevational gradients --- NDVI --- long-term trends --- sap flow --- peat --- tree seedlings --- Southern Ocean --- chlorophyll --- non-structural carbohydrates (NSCs) --- drought --- upward advance --- remote sensing data --- Erman's birch
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