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Cyanobacteria make a major contribution to world photosynthesis and nytrogen fixation, but are also notorious for causing nuisances such as dense and often toxic "blooms" in lakes and the ocean. this book focuses on ecological aspects of these o[...]ouvrage
Elms occur, both naturally and cultivated, throughout much of the temperate world. Because of their high tolerance to extreme growing conditions and their widespread distribution, elms have been widely planted in cities, towns and rural areas th[...]ouvrage
This book provides a practical and theoretical overview of the ex situ techniques used to conserve plant genetic resources. The thirteen chapters review : germplasm collection, seed storage, field gene banks, botanic gardens, and in vitro and po[...]ouvrage
M. Bos | Dordrecht, NLD : Kluwer Academic Publishers | NATO ASI Series, 2. Environment - vol.22 | 1996The irrigated area in the Aral Sea Basin totals about 7.5 million ha. Part of the water supplied to this area is consumed by the irrigated crops ; the remainder drains into the groundwater basin, downstream depressions, or back into the rivers. [...]ouvrage
Cet ouvrage est le compte rendu d'un atelier de l'OTAN sur les écoulements non saturés en modélisation hydrologique qui s'est tenu aux "Villages du soleil", près d'Arles en France, du 13 au 17 juin 1988. Cet ouvrage multi-auteurs apporte une con[...]