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502.7 --- 574.472 --- 574.5 --- Protection of animate nature. Wildlife conservation and protection --- Biodiversity --- Hydrobiology. Aquatic biocoenoses and ecosystems. Food chains --- Biodiversity conservation. --- Biodiversity. --- Wetland ecology. --- Environmental Sciences and Forestry. Nature Management --- 574.5 Hydrobiology. Aquatic biocoenoses and ecosystems. Food chains --- 574.472 Biodiversity --- 502.7 Protection of animate nature. Wildlife conservation and protection

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Plant ecology. Plant sociology --- Phytomorphology. Phytoanatomy --- Ecologie --- Ecosystemen --- Ecosystèmes --- Forêt feuillue sempervirente --- Broadleaved evergreen forests --- Couverture végétale --- Plant cover --- Écosystème --- ecosystems --- Écologie forestière --- forest ecology --- Composition botanique --- Botanical composition --- Zambèze --- Zambezi River --- 630*23 --- 504.05 --- 574.472 --- 632.151 --- 581.54 --- Regeneration and formation of stands --- Unfavourable influences of human activities on the environment. Ecotoxicology --- Biodiversity --- Smoke. Smog. Gases --- Climatic conditions. Seasons. Cosmic factors in plant ecology. Phenology --- ONLY SEPARATES (no collection) --- 581.54 Climatic conditions. Seasons. Cosmic factors in plant ecology. Phenology --- 632.151 Smoke. Smog. Gases --- 574.472 Biodiversity --- 504.05 Unfavourable influences of human activities on the environment. Ecotoxicology --- 630*23 Regeneration and formation of stands

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The diversity of crop plants is one of our most important biological resources, and the most important source of crop genes are the fields of peasant farmers in regions where crop domestication and evolution have occurred. Today, however, crop genes are threatened by social and technological change such as human population growth, the use of new agricultural technologies, the development of new varieties, and the commercialization of agriculture. Gene banks have been successful in capturing much of the genetic diversity of crop species, but it is also essential that the environmental systems w

Agricultural techniques --- Crops --- Germplasm resources conservation --- Germplasm resources, Plant --- 574.472 --- 631.526 --- 633/635 --- 631.526 Groups and types of cultivated plants. Genetic resources --- Groups and types of cultivated plants. Genetic resources --- 574.472 Biodiversity --- Biodiversity --- 633/635 Agronomy. Crop science --- Agronomy. Crop science --- Conservation of plant genetic resources --- Conservation of plant germplasm resources --- Plant genetic resources --- Plant germplasm resources --- Plants, Cultivated --- Germplasm resources --- Conservation of germplasm resources --- Genetic resources conservation --- Germplasm conservation --- Germplasm resource conservation --- Conservation of natural resources --- Crops - Germplasm resources. --- Agriculture. --- Varieties --- genetic resources --- population genetics --- Ethiopia --- Andean region --- Zimbabwe --- Plant genetic engineering --- Genetic engineering. --- Germplasm resources. --- Germplasm resources conservation. --- Germplasm resources, Plant.

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It is a distressing truism that the human race during the last millennium has caused the exponential loss of plant genetic diversity throughout the world. This has had direct and negative economic, political and social consequences for the human race, which at the same time has failed to exploit fully the positive benefits that might result from conserving and exploiting the world's plant genetic resources. However, a strong movement to halt this loss of plant diversity and enhance its utilisation for the benefit of all humanity has been underway since the 1960's (Frankel and Bennett, 1970; Frankel and Hawkes, 1975). This initiative was taken up by the Convention on Biological Diversity (CBD, 1992) that not only expounds the need to conserve biological diversity but links conservation to exploitation and development for the benefit of all. Article 8 of the Convention clearly states the need to develop more effective and efficient guidelines to conserve biological diversity, while Article 9, along with the FAO International Undertaking on Plant Genetic Resources, promotes the adoption of a complementary approach to conservation that incorporates both ex situ and in situ techniques.

Ressource végétale --- Plant resources --- Biodiversité --- Biodiversity --- Plante sauvage --- Wild plants --- Plante de culture --- Crops --- Conservation des ressources --- Resource conservation --- Germplasm --- Pool de gènes --- Gene pools --- Évaluation --- evaluation --- Contexte économique --- economic environment --- Traitement des données --- Data processing --- Analyse de données --- Data analysis --- Étude de cas --- case studies --- Oryza --- Triticum --- Solanum --- Musa --- Coffea --- Trifolium --- Leucaena --- Orchidaceae --- 631.526 --- 502.753 --- 574.472 --- Groups and types of cultivated plants. Genetic resources --- Protection of individual plant species from extinction, extermination --- CON Bioconservation --- bioconservation --- conservation --- ex situ conservation --- genebanks --- nature conservation --- plant genetic resources --- 574.472 Biodiversity --- 502.753 Protection of individual plant species from extinction, extermination --- 631.526 Groups and types of cultivated plants. Genetic resources --- Germplasm resources conservation --- Germplasm resources, Plant --- Conservation of plant genetic resources --- Conservation of plant germplasm resources --- Plant genetic resources --- Plant germplasm resources --- Plants, Cultivated --- Germplasm resources --- Conservation of germplasm resources --- Genetic resources conservation --- Germplasm conservation --- Germplasm resource conservation --- Conservation of natural resources --- evaluation. --- Plant ecology. --- Evolutionary biology. --- Human genetics. --- Plant science. --- Botany. --- Plant Ecology. --- Evolutionary Biology. --- Human Genetics. --- Plant Sciences. --- Botanical science --- Phytobiology --- Phytography --- Phytology --- Plant biology --- Plant science --- Biology --- Natural history --- Plants --- Genetics --- Heredity, Human --- Human biology --- Physical anthropology --- Animal evolution --- Animals --- Biological evolution --- Darwinism --- Evolutionary biology --- Evolutionary science --- Origin of species --- Evolution --- Biological fitness --- Homoplasy --- Natural selection --- Phylogeny --- Botany --- Phytoecology --- Vegetation ecology --- Ecology --- Floristic botany --- Floristic ecology