Fritz Hans Schweingruber – författare

At a meeting of dendrochronologists an American colleague described the effects of volcanic eruptions on annual ring formation in bristlecone pines. I knew very little about either volcanoes or American pines! At the same meeting European scientists spoke on the dendrochronological dating of lakeshore settlements and the effects of larch bud moth attack on trees in the Alps. It is possible that American participants were not in a position to fully appreciate these papers either. In other words, dendrochronology is an extremely interdisciplinary science; its facets range from modern statistics on wood anatomy to the history of art. It is difficult even for dendrochronol­ ogists to keep in touch with the whole spectrum, and even more difficult for the layman to obtain an overall view of the many methods and fields of application. In recent times specialisation has begun to hinder communication be­ tween the various sectors. Archaeologists, for instance, set up their own dendrochronological laboratories and construct independent chronologies to serve their particular interests. The scientific institutions which previously carried out such work are now turning more and more to strongly statistically or biologically-oriented questions. The full wealth of information contained in tree rings, however, will be revealed only when dendrochronologists make a concerted effort to relate the findings of the different fields. In spite of inevitable specialisation, it is necessary that the expert concern himself with the work of his colleagues.

This aesthetically unique book combines ecological, morphological and anatomical, as well as phylogenetic studies on plant material in a largely unexplored dry mountain region above the timberline. It offers the first comparative analysis of hundreds of plants - annuals, perennial herbs and dwarf shrubs - in an area of 87,000 km2 at altitudes from 2600 to 6150 m above sea level in the Western Himalaya. Characteristic landscape pictures of all major vegetation types and maps show at which locations and altitudes the individual species of vascular plants are distributed, while macroscopic plant pictures and plant age are related to high-quality micro-sections and micro-photographs. The anatomical features of 345 dicotyledons were characterized using the published coding systems and those of 155 monocotyledones were characterized on the basis of a newly developed key. The number of annual rings and anatomical features of the xylem and phloem of dicots are compared and related to different ecological conditions within this extremely dry and cold environment. The ecological and anatomical characterization is used to create a phylogenetic tree based on nucleotide sequences, and indicates which features are genetically stable and which ones are modified by environmental factors.The book appeals to scientists in the fields of plant taxonomy, morphology, anatomy and ecology.

This is the first book to provide comprehensive information on the anatomy and ecology of arctic and alpine plants from cold sites around the globe, including representative species from Greenland, Iceland, Svalbard, Himalaya, Japan, Argentina, Ecuador and Western USA.

This is the first book to provide comprehensive information on the anatomy and ecology of arctic and alpine plants from cold sites around the globe, including representative species from Greenland, Iceland, Svalbard, Himalaya, Japan, Argentina, Ecuador and Western USA.

This book represents a response to the action plan for Diospyros and Dalbergia species regarding the establishment of a reference collection and reliable identification system for species listed by CITES, the Convention on International Trade in Endangered Species of Wild Fauna and Flora.

This aesthetically unique book combines ecological, morphological and anatomical, as well as phylogenetic studies on plant material in a largely unexplored dry mountain region above the timberline.

This atlas offers anatomical descriptions of 19 Dalbergia and 31 Diospyros species, most of them endemic to Madagascar. Each species is illustrated with color micrographs of double-stained sections through the xylem, bark, and pith of stems, branches, and twigs. Further, a photograph of each plant and information on its height, DBH, habit, and geographical and elevational distribution in Madagascar are included. Dalbergia and Diospyros species provide highly-priced woods, which are intensively traded across the world and therefore highly endangered by illegal trade and harvesting. This book represents a response to the action plan for Diospyros and Dalbergia species regarding the establishment of a reference collection and reliable identification system for species listed by CITES, the Convention on International Trade in Endangered Species of Wild Fauna and Flora. Bringing together a wealth of material recently collected in different biogeographical regions of Madagascar and identified by the Missouri Botanical Garden, the book will appeal to plant scientists, taxonomists and practitioners involved in wood identification, and will help to safeguard the legacy of precious wood trading through proper identification.

he „Atlas of Woody Plant Stems“ is a com- Naturally, it was impossible to cover completely the Tprehensively illustrated book with short, in- enormous variability of plant life forms. We have formative texts. We chose this layout because plant tried, however, to illustrate the main principles and anatomy and morphology can only be conveyed by features. Many decades of collection and prepa- detailed pictures. In addition, a vivid presentation tion provided the basis for this book. should attract a broader public, not only the s- cialist. We hope that the combination of anatomy Fritz Schweingruber would like to thank the Swiss and morphology will create interest and curiosity. Federal Research Institute WSL, that offered him Amateurs will enjoy the wide range of pictures; hospitality after his retirement. The authors thank all interested readers will be caught by particular chap- the students and colleagues that have, for decades, ters; specialists will delve into aspects and photo- collected and prepared samples, and who helped graphs that may have never been presented before; with the English translations. Thanks to John Kirby teachers may use the pictures for illustrations in who made the fnal English editing. classes with students.

Dendrochronology and wood anatomy developed for decades as two independent scientific fields. It was only in the last decade that it was made clear that the dimension of time is the fourth dimension for both sciences and that it was demonstrated that wood anatomy and dendrochronology are perfect partners. The main aim of this book is to show the hidden ecological richness in stems and roots from trees, shrubs and herbs. It should encourage researchers to consider the anatomic microcosm of wood plants and use it as a retrospective source of information, solving problems related to ecophysiology, competition, site conditions, population biology, earth science, wood quality and even human history.

Dendrochronology and wood anatomy developed for decades as two independent scientific fields. It was only in the last decade that it was made clear that the dimension of time is the fourth dimension for both sciences and that it was demonstrated that wood anatomy and dendrochronology are perfect partners. The main aim of this book is to show the hidden ecological richness in stems and roots from trees, shrubs and herbs. It should encourage researchers to consider the anatomic microcosm of wood plants and use it as a retrospective source of information, solving problems related to ecophysiology, competition, site conditions, population biology, earth science, wood quality and even human history.

The global perspective of the findings is underlined by the analysis of 500 species from the Caucasus, the Rocky Mountains and Andes, the subtropical zone on the Canary Islands, the arid zones in the Sahara, in Eurasia, Arabia and Southwest North America, and the boreal and arctic zones in Eurasia and Canada.

This work, published in two volumes, contains descriptions of the wood and bark anatomies of 3000 dicotyledonous plants of 120 families, highlighting the anatomical and phylogenetic diversity of dicotyledonous plants of the Northern Hemisphere. The first volume principally treats families of the Early Angiosperms, Eudicots, Core Eudicots and Rosids, while the second concentrates on the Asterids. Presented in Volume 2 are microsections of the xylem and phloem of herbs, shrubs and trees of 1000 species and ca. 35 families of various life forms of the temperate zone along altitudinal gradients from the lowland at the Mediterranean coast to the alpine zone in Western Europe. Special attention is given to the very diverse family of Asteraceae. The global perspective of the findings is underlined by the analysis of 400 species from the Caucasus, the Rocky Mountains and Andes, the subtropical zone on the Canary Islands, the arid zones in the Sahara, in Eurasia, Arabia and Southwest North America, New Zealand and the boreal and arctic zones in Eurasia and Canada. The presence of annual rings in all life forms demonstrates that herbs and dwarf shrubs are an excellent tool for the reconstruction of annual biomass production and the interannual dynamic of plant associations. The common principle of the anatomical expression of secondary growth is a key factor in understanding evolution and adaptation processes in all life forms, from the 3 cm tall crepide pigmea (Crepis pygmaea) in the alpine zone to the 40 m tall ash (Fraxinus excelsior) in Central European riparian forests. The study opens vast fields of research for dendrochronology, wood anatomy, taxonomy and ecology.

Atlas of Wood, Bark and Pith Anatomy of Eastern Mediterranean Trees and Shrubs

he „Atlas of Woody Plant Stems“ is a com- Naturally, it was impossible to cover completely the Tprehensively illustrated book with short, in- enormous variability of plant life forms. We have formative texts. We chose this layout because plant tried, however, to illustrate the main principles and anatomy and morphology can only be conveyed by features. Many decades of collection and prepa- detailed pictures. In addition, a vivid presentation tion provided the basis for this book. should attract a broader public, not only the s- cialist. We hope that the combination of anatomy Fritz Schweingruber would like to thank the Swiss and morphology will create interest and curiosity. Federal Research Institute WSL, that offered him Amateurs will enjoy the wide range of pictures; hospitality after his retirement. The authors thank all interested readers will be caught by particular chap- the students and colleagues that have, for decades, ters; specialists will delve into aspects and photo- collected and prepared samples, and who helped graphs that may have never been presented before; with the English translations. Thanks to John Kirby teachers may use the pictures for illustrations in who made the fnal English editing. classes with students.

The global perspective of the findings is underlined by the analysis of 500 species from the Caucasus, the Rocky Mountains and Andes, the subtropical zone on the Canary Islands, the arid zones in the Sahara, in Eurasia, Arabia and Southwest North America, and the boreal and arctic zones in Eurasia and Canada.

This work, published in two volumes, contains descriptions of the wood and bark anatomies of 3000 dicotyledonous plants of 120 families, highlighting the anatomical and phylogenetic diversity of dicotyledonous plants of the Northern Hemisphere. The first volume principally treats families of the Early Angiosperms, Eudicots, Core Eudicots and Rosids, while the second concentrates on the Asterids. Presented in Volume 2 are microsections of the xylem and phloem of herbs, shrubs and trees of 1000 species and ca. 35 families of various life forms of the temperate zone along altitudinal gradients from the lowland at the Mediterranean coast to the alpine zone in Western Europe. Special attention is given to the very diverse family of Asteraceae. The global perspective of the findings is underlined by the analysis of 400 species from the Caucasus, the Rocky Mountains and Andes, the subtropical zone on the Canary Islands, the arid zones in the Sahara, in Eurasia, Arabia and Southwest North America, New Zealand and the boreal and arctic zones in Eurasia and Canada. The presence of annual rings in all life forms demonstrates that herbs and dwarf shrubs are an excellent tool for the reconstruction of annual biomass production and the interannual dynamic of plant associations. The common principle of the anatomical expression of secondary growth is a key factor in understanding evolution and adaptation processes in all life forms, from the 3 cm tall crepide pigmea (Crepis pygmaea) in the alpine zone to the 40 m tall ash (Fraxinus excelsior) in Central European riparian forests. The study opens vast fields of research for dendrochronology, wood anatomy, taxonomy and ecology.