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Both in Ethiopia and in the countries of East Africa, the continuing proliferation and spread of invasive alien species (IAS) is now recognized as a serious problem, which needs to be addressed. While this situation has improved dramatically over the past 10 years, further progress has been hampered by the absence, hitherto, of a comprehensive IAS database for the region. Countries in the region have repeatedly expressed the need for such a database, as a tool to assist in the identification of naturalized and invasive alien plant species, and in understanding their impacts, both existing and potential, while also providing pointers on what can be done to manage such species. This information is seen as essential, not only in enabling countries to develop effective IAS management strategies, but also in helping them to meet their obligations under various international agreements and treaties, including Article 8 (h) of the Convention on Biological Diversity (CBD) and Target 9 of the 2020 Aichi Biodiversity Targets. In providing such a database, this Guide is intended to give the countries of eastern Africa the information they require, in order to be able to develop effective strategies for combating the growing menace posed by invasive alien plants. It is further hoped that this Guide will foster increased regional collaboration, in responding to the challenges of managing shared invasive plant species. The Guide is based on the findings of extensive roadside surveys, carried out throughout the region, and on a review of the literature pertaining to naturalization and/or invasiveness among alien plants in eastern Africa. By this means, scores of exotic plant species were found to have escaped from cultivation, and to have established populations in the 'wild', to the detriment of natural resources and the millions of people in the region who depend on these resources. Included in the Guide are descriptions of roughly 200 exotic plant species which are either invasive already or which are deemed to have the potential to become invasive in the region. The profiled species include aquatic invasive plants or waterweeds (seven species); vines, creepers or climbers (20 species); terrestrial herbs, shrubs, and succulents (more than 30 species of each), and trees (more than 60 species). Also profiled in this Guide are many exotic plant species which, although their current distribution in the region may still be relatively localized, nevertheless have the potential to become considerably more widespread and problematic. The wide range of habitats and climatic conditions found within Ethiopia and across East Africa make the region as a whole particularly prone to invasions by a host of introduced plant species. Such invasions are being facilitated by increased land degradation, especially through overgrazing and deforestation, and also by climate change.

Plant introduction --- Introduction of plants --- Botany, Economic --- Phytogeography --- Alien plants --- Exotic plants --- Pest introduction --- invasives --- nonindigenous species --- climatic change --- weed control --- aquatic species --- data banks --- aquatic organisms --- exotic species --- weeds --- aquatic plants --- climate change --- invasive organisms --- eukaryotes --- databases --- introduced organisms --- nonindigenous organisms --- Africa --- Plants --- invasive species --- non-native species --- Africa South of Sahara --- invasive alien species --- exotic organisms --- subsaharan Africa --- alien invasive species --- introduced species --- East Africa --- aquatic weeds --- non-indigenous organisms --- non-indigenous species --- non-native organisms

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This book introduces readers to nearly 600 common weeds. In addition to essential information, each chapter includes photos for a specific type of weed to show its morphology in different growth periods, such as seedling, root, flower, fruit, and mature plant. The book also discusses control measures, including agricultural, chemical, physical, biological, and comprehensive methods. The Volume1 mainly focuses on 126 species of grass weeds and 34 species of sedge weeds. With the development of society and economics, weeds have become a recurring problem. In particular, the exotic, invasive, and quarantine weeds have spread dramatically and rapidly. On the other hand, many people, even those who are engaged in weed control, do not (or cannot) distinguish between weeds. Thus there is significant demand for illustrations of weed morphologies, as well as information on their control measures. This book offers a valuable, practical guide for all those working in the fields of crop cultivation, plant protection and quarantine management.

Life sciences. --- Agriculture. --- Forestry management. --- Life Sciences. --- Plant Systematics/Taxonomy/Biogeography. --- Forestry Management. --- Weeds --- Control. --- Crops --- Eradication of weeds --- Suppression, Weed --- Weed control --- Weed eradication --- Weed management --- Weed suppression --- Vegetation management --- Herbicides --- Eradication --- Management --- Forests and forestry. --- 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 --- Farming --- Husbandry --- Industrial arts --- Life sciences --- Food supply --- Land use, Rural --- Plant systematics. --- Plant taxonomy. --- Forest administration --- Forest plants --- Forest resource administration --- Forest resource management --- Forest stewardship --- Forest vegetation management --- Forestry management --- Forests and forestry --- Stewardship, Forest --- Vegetation management, Forest --- Ecosystem management --- Botanical classification --- Botanical systematics --- Botanical taxonomy --- Botany --- Classification --- Plant biosystematics --- Plant classification --- Plant systematics --- Plant taxonomy --- Systematic botany --- Systematics (Botany) --- Taxonomy, Plant --- Plant taxonomists --- Administration --- Control --- Plants