Download or read book Plant Taxonomy and Biosystematics written by Clive A. Stace and published by Cambridge University Press. This book was released on 1989 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: A concise, up-to-date and fully-integrated discussion of present-day plant taxonomy.

Download or read book The Origin Expansion and Demise of Plant Species written by Donald A. Levin and published by Oxford University Press. This book was released on 2000-05-04 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combining insights from observation, experimentation, and theory, The Origin, Expansion, and Demise of Plant Species offers a broad overview of species as dynamic entities that arise, have unique evolutionary histories, and ultimately go extinct. It begins with a review of species concepts and the exposition of a new concept; it then addresses plant speciation, the expansion of species from their narrow centers of origin, intraspecific differentiation, and contact zones between differentiated population systems. Special attention is given to the breakdown of cohesion among populations by reproductive and spatial barriers. Also, the ecological and genetic properties of small populations and fragmented population systems are discussed with a focus on the role of hybridization in the demise of species. It ends with an exploration of the longevity of species and the tempo of diversification, contrasting different groups of plants in these respects as well as in rates of chromosomal differentiation. This book provides a new synthesis of evolutionary biology and ecology. It examines species from their origins, then follows them through their expansion, differentiation and loss of cohesion, and decline and extinction. The stages in the lives of species are viewed through ecological and genetic theory, and topics typically addressed independently are woven into a continuous fabric. As the first synthetic treatment of the stages through which plant species pass, this book is very useful for botanists, evolutionary biologists, conservation biologists, as well as all curious students of the biological sciences.

Download or read book Gene Flow from GM Plants written by Guy M. Poppy and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gene flow is not unique to genetically modified (GM) crops, but the possibility of the spread of transgenic DNA to wild and domesticated relatives raises a new set of issues for scientists and policymakers to consider. Unfortunately, we are still too often unable to quantify the risks of ecological damage associated with gene flow. This is due partly to the huge breadth of knowledge required to assemble a comprehensive risk assessment. For example, many scientists active in research on the mechanics of gene flow nevertheless lack a deep understanding of what is required to identify, characterise and assess ecological risk, and many of those who are aware of the risk assessment process and the framework used for legislation have insufficient knowledge of the reproductive biology, agricultural systems, modelling and ecological literature required to compile a balanced risk assessment. This book, set in the context of gene flow in general, considers the assessment, measurement and management of the risks of gene flow from GM plants, combining the expertise of all the various stakeholders. It is directed at researchers and professionals in plant molecular genetics and plant ecology, in both the academic and industrial sectors.

Download or read book Plant Evolution in the Mediterranean written by John D. Thompson and published by Oxford University Press. This book was released on 2020-08-21 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the first edition of this book published in 2005, there has been an immense amount of new and fascinating work on the history, ecology, and evolution of the Mediterranean flora. During this time, human impacts have continued to increase dramatically, significantly influencing both the ecology and evolution of the region's biota. This timely and comprehensive update of the original text integrates a diverse and scattered literature to produce a synthetic account of Mediterranean plant evolutionary ecology. It maintains the accessible style of its previous version whilst incorporating recent work in a new structural framework. This is not a traditional "plant science" book per se, but a novel integration of history, ecology, biogeography, and evolution, all set in the context of a dramatically increasing human footprint. There is a particular emphasis on the role of human activities as an ecological factor and their subsequent impact on plant evolution. Conversely, it demonstrates how an understanding of the evolutionary ecology of the region's flora can be used to provide insights into its future conservation and management. Plant Evolution in the Mediterranean is aimed at all those who are interested in the biology of the Mediterranean region, whether it is taxonomy, ecology, evolution, conservation policy and management, or the regional history of its biodiversity in general. It will be of relevance and use to all graduate students and researchers of Mediterranean-type ecosystem ecology and geography, as well as professional ecologists, evolutionary biologists, conservation biologists, and environmental practitioners requiring a concise, authoritative overview of the topic.

Download or read book Opera Botanica written by and published by . This book was released on 1979 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Resources of Mediterranean Pasture and Forage Legumes written by Sarita Jane Bennett and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetic Resources of Mediterranean Pasture and Forage Legumes is a comprehensive review of grassland improvement in Mediterranean areas using legume species. The book includes a detailed account of the processes involved in understanding the ecology of legumes and their collection in the Mediterranean, through to their preliminary evaluation and storage at various Genetic Resource Centres. A generic conspectus and key to the forage legumes of the Mediterranean basin is also included. These proceedings are truly international with examples on the collection and use of Mediterranean genetic resources being illustrated by Genetic Resource Centres in Australia, Cyprus, France, Greece, Syria, Turkey and Tunisia. Current important issues such as the sustainability of Mediterranean grasslands, the risk of genetic erosion and the principles of population genetics employed during a collecting mission are discussed. The book will be of value to researchers working in the fields of grassland and rangeland improvement, Mediterranean farming systems, genetic resources, and pasture and forage ecology.

Download or read book Commentaries in Plant Science written by Harry Smith and published by Elsevier. This book was released on 2013-10-22 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Commentaries in Plant Science, Volume 2 is a collection of papers that reviews developments in the pure and applied science of plants. One paper discusses the role of supercooling in the winter survival mechanism of and ecological distribution of many plant communities. Another paper evaluates the Cholodny-Went theory of shoot geotropism that there is strong evidence in auxin redistribution occurring in a rapid manner to cause geotropic curvature. The magnitude of auxin redistribution is too rare to cause differential growth. Some insect pests have specific nutritional requirements and well-developed mechanisms for selecting their plant host. One paper enumerates the benefits of using insect-resistant host plant varieties, such as the non-incurrence of extra costs, these are environmentally safe, and are compatible with most other methods of pest control. Another paper discusses the nature and possible genetic manipulation of a complex bacteria, the actinomycetes, as well as its role as antibiotic producer. Another paper examines the nature of seed storage proteins and of the cellular processes that are related in their synthesis and deposition especially in cereals and legume. This collection is suitable for botanists, genecologists, taxonomists, biologists, and investigators whose works involve cell membrane research.

Download or read book Edinburgh Journal of Botany written by and published by . This book was released on 1990 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Atlas Florae Europaeae written by Jaakko Jalas and published by . This book was released on 1989 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Davis Hedge Festschrift Commemorating the Seventieth Birthday of Peter Hadland Davis and the Sixtieth Birthday of Ian Charleson Hedge written by Kit Tan and published by . This book was released on 1989 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book devoted exclusively to the analysis of the Nazis' radio effort against the United Kingdom during the Second World War. Propaganda is presented in context: the purposes behind it, the changing patterns, themes, styles, and techniques employed, and the impact upon the target audience and its morale. An analysis of the Nazi wireless broadcasts to Britain for the whole of the Second World War reveals a sophisticated and intelligent propaganda assault on the social and economic fabric of British society. In the end the British failed to succumb to the stupefying effects of Nazi propaganda and they traditionally congratulate themselves upon the national unity which immunised them against it. The author argues that this traditional view disguises a more complex, less appealing reality.

Download or read book Cytotaxonomical Atlas of the Slovenian Flora written by Áskell Löve and published by . This book was released on 1974 with total page 1276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin of the British Museum Natural History written by and published by . This book was released on 1992 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book BSBI Abstracts written by and published by . This book was released on 1973 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Plant Variation and Evolution written by David Briggs and published by Cambridge University Press. This book was released on 2016-06-30 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: We are in the midst of a biological revolution. Molecular tools are now providing new means of critically testing hypotheses and models of microevolution in populations of wild, cultivated, weedy and feral plants. They are also offering the opportunity for significant progress in the investigation of long-term evolution of flowering plants, as part of molecular phylogenetic studies of the Tree of Life. This long-awaited fourth edition, fully revised by David Briggs, reflects new insights provided by molecular investigations and advances in computer science. Briggs considers the implications of these for our understanding of the evolution of flowering plants, as well as the potential for future advances. Numerous new sections on important topics such as the evolutionary impact of human activities, taxonomic challenges, gene flow and distribution, hybridisation, speciation and extinction, conservation and the molecular genetic basis of breeding systems will ensure that this remains a classic text for both undergraduate and graduate students in the field.

Download or read book Flora of the Cretan Area written by Robert Ralph and published by . This book was released on 1993 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Crete, Karpathos and the nearby Islands in the South Aegean region have a rich and varied flora with approximately 1750 species, including a significant proportion of endemics. This checklist is the first work to provide, in a single volume, detailed information on all these vascular plants. In addition, and also for the first time, most of the taxa ae mapped."--Publisher description

Download or read book Plant Systematics written by Tod F. Stuessy and published by . This book was released on 2001 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evolutionary Biology written by Max K. Hecht and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first volume of Evolutionary Bio/ogy was published eleven years ago. Since that time eleven volumes and one supplement have appeared. As stated in earlier prefaces, we are continuing the focus of this series on critical reviews, commentaries, original papers, and controversies in evolu tionary biology. lt is our aim to publish papers primarily of greater length than normally published by society journals and quarterlies. We therefore invite colleagues to submit chapters that fall within the focus and standards of Evolutionary Bio/ogy. The Editors vii Contents 1. Precambrian Evolution of Photosynthetic and Respiratory Organisms lohn M. 0/son Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Basic Assumptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Photosynthetic Energy Conversion and Electron Transport . . . . . . . 6 Oxygen-Evolving Organisms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Photosynthetic Bacteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Photoassimilation and Cyclic Electron Flow . . . . . . . . . . . . . . 13 . . . . . Acetate Assimilation . . . . . . . . . . . . . . . . . . . . . . . . . . 15 . . . . . . . . . . . The Common Ancestor . . . . . . . . . . . . . . . . . . . . . . . . . . 17 . . . . . . . . . . . Chlorophyll. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 . . . . . . . . . . . . . Quinone................................................ 19 Linear Electron Transport . . . . . . . . . . . . . . . . . . . . . . . 22 . . . . . . . . . Light-Harvesting Systems. . . . . . . . . . . . . . . . . . . . . . . . 22 . . . . . . . . . Evolution of Photosynthetic Bacteria . . . . . . . . . . . . . . . . . . 22 . . . . . . . Purpie and Green Bacteria . . . . . . . . . . . . . . . . . . . . . . . 23 . . . . . . . . . Evolution of Blue-Green Algae . . . . . . . . . . . . . . . . . . . . . . 24 . . . . . . . . Weak Electron Donors for the Protoalgae . . . . . . . . . . . . . . 25 . . . . . Evolution of Respiration . . . . . . . . . . . . . . . . . . . . . . . . . . 29 . . . . . . . . . . General Remarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 . . . . . . . . . . . . . References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 . . . . . . . . . . . . . . 2. Molecular Structure and Protein Variation within and among Populations Richard K. Koehn and Waller F. Eanes Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 . . . . . . . . . . . . . . Molecular Properlies and Structural Variation . . . . . . . . . . . . . 45 . . . . Amino Acid Composition and Quaternary Structure . . . . . . . . 46 . . Protomer Size and Quaternary Structure . . . . . . . . . . . . . . . 47 . . . . . ix X Contents Enzyme Polymorphism and Quaternary Structure . . . . . . . . . . . 50 . . . Enzyme Polymorphism and Subunit Size . . . . . . . . . . . . . . . . 53 . . . . . . Data and Analyses . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 . . . . . . . . . . . Drosophila Enzyme Polymorphism . . . . . . . . . . . . . . . . . . 60 . . . . . . . Human Enzyme Polymorphism . . . . . . . . . . . . . . . . . . . . 63 . . . . . . . . Enzyme Polymorphism: Structure and Size . . . . . . . . . . . . . . . 67 . . . . .