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This is an important reference for anyone interested in exploring or managing the physiological and ecological processes which underlie resource allocation and plant growth in agroforestry systems. The book highlights how recent developments in agroforestry research can contribute to understanding agroforestry system function, and discusses the potential application of agroforestry in addressing a range of land use challenges in both tropical and temperate regions of the world.

References 343 20. J. Zel: Micropropagation of Pinus sylvestris 347 1. Introduction 347 2. Micropropagation from embryos 347 3. Micropropagation from seedling explants 350 4. Conclusions 362 5. Summary 362 References 362 21. M. J. Hutzell and D. J. Durzan: Improved aseptic germination and controlled growth for micropropagation of Douglas fir 367 l. Introduction 367 2. Material and methods 367 3. Results and observations 369 4. Discussion 370 5. Summary 372 References 372 22. D. F. Karnosky, Y Hu...

Comprising about one hundred plates this atlas documents anddescribes the processes concerning the sexual reproductionin higher plants. It is dividedinto three parts:- Anther Development- Pistil Development- Progamic Phase and Fertilization.The scanning, transmission electron and light micrographsare all of immaculate quality and - for the viewer'sorientation - almost each plate is complemented by a schemeshowing a larger area of the plant indicating the site ofthe section.Together with instruct...

Planted forests, from irrigated eucalypts in Brazil to Douglas-fir seedlings in the mountains of Oregon, are described and discussed by international experts. The varieties, purposes, forms, and ecological, economic and social aspects of planted forests are considered in technical details and in case studies from temperate and tropical regions of the world.

PH. BOURDEAU Directorate-General Science. Research and Development. Commission of the European Communities. Brussels. Belgium We are living on a unique planet, the only one in the solar system where life exists. The very existence of life has modified the physical and chemical environment of the earth, its atmosphere and oceans, in a way that makes life sustainable. This system with its complex cybernetic mechanisms has been named GAIA by Lovelock. Man has always interfered with it on a more or...

The Western Australian jarrah forest is unique, contammg some of the most beautiful flora in the world, more than 100 species of birds and some 50 mammals indigenous to this State. This book "The Jarrah Forest - A Complex Mediterranean Ecosystem" is a collection of scholarly essays on every known aspect of the northern part of the jarrah forest extending from south of Collie to the Avon River. All of the work has been researched by members of tertiary institutions, the private sector and governm...

Conifers-pine, fir, and spruce trees-are dominant species in forests around the world. This book focuses on the physiology of conifers and how physiological systems operate. Special consideration is devoted to the means by which ecophysiological processes influence organismal function and distribution. Chapters focus on the genetics of conifers, their growth and geographic distribution and the factors that influence this distribution, the impact of insect herbivory and winter dormancy on ecophys...

It would have been very easy to expand on all the sections of the first edition but I decided to try to retain the relatively short, introductory nature of the book. Some new material has been added, particularly where it has been possible to update data, and there has been some change of emphasis in places, in order to reflect changing world conditions. The book retains its original purpose, however, of introducing systems thinking as applied to agriculture. I am grateful to Angela Hoxey for he...

Dieser Band enthalt alle neuen Erkenntnisse zu den Kafergruppen der Bande 9 bis 11, die nach deren Veroeffentlichung erschienen sind. Der Forschungsstand ist somit das Jahr 1998.