Related items
Showing items related by metadata.
-
-
-
MeetingMeeting documentSituation des Forêts du Monde 2014 et Prochaine Étude Prospective du Secteur Forestier en Afrique
Commission des Forêts et de la Faune Sauvage pour l’Afrique, Dix-neuvième session, Troisième Semaine Africaine des Forêts et de la Faune Sauvage, Windhoek, République de Namibie, 30 septembre - 4 octobre 2013
2013Also available in:
Users also downloaded
Showing related downloaded files
-
No Thumbnail AvailableProjectProgramme / project reportLa technologie de construction des cages d'elevage de Tilapia nilotica (L.) dans le lac de Kossou, Cote d'Ivoire
Developpement de la Peche du Lac de Kossou, Cote d'Ivoire
1978Also available in:
No results found.Les résultats des essais sur la construction des cages d'élévage de Tilapia nilotica (L) y sont décrits. Les cages sont divisées en deux catégories, celles adaptées à l'élévage des petits alevins de taille de 15 à 30 g, et celles pour le grossissement des individus de ce dernier poids à la taille marchande. Le modèle de cage d'alevins utilisé à Kossou est acceptable, pourtant le cadre en bois peut être supprimé où remplacé par le métal pour prolonger la vie de la cage dans l'eau. L'introductio n d'une maille plus fine que 8 mm de côté sera avantageuse dans la production des quantités très importantes d'alevins. Les cages de grossissement sont divisées en deux parties: le cadre rigide flottant et le treillis submergé. Pour le cadre rigide flottant le tuyau en acier dure 10 ans, le bois environ 5 ans, et le bambou de chine 1 an. La flottaison est effectuée par les fûts plastiques vides au lieu de polystyrène. Pour la partie treillis submergé, le grillage plastique de mailles 18 à 25 mm de côté est le meilleur matériel; il résiste environ 10 ans. Le filet nylon de fil 210/18 et maille 14 à 20 mm de côté est acceptable; pourtant la circulation d'eau est diminuée. Ce filet resiste 5 ans dans l'eau. Le filet fait avec le fil 210/9 n'est pas assez resistant et n'est pas recommandé. Les dimensions de cages de grossissement varient selon l'oxygène dissous disponible, le courant d'eau, l'ouverture du treillis, la charge maximale des poissons necessaires et les moyens disponibles au pisciculteur. La taille minimale est de 6 m3 pour assurer une bonne consommation de la nourriture; la taille maximale dépend des considérations ci-dessus mentionnées. Le placement des cages est très important; pour le lac de Kossou, une profondeur minimale de 5 mètres est necessaire pour assurer le meilleur approvisionnement d'oxygène dissous. -
Book (series)FlagshipThe State of Food Security and Nutrition in the World 2021
Transforming food systems for food security, improved nutrition and affordable healthy diets for all
2021In recent years, several major drivers have put the world off track to ending world hunger and malnutrition in all its forms by 2030. The challenges have grown with the COVID-19 pandemic and related containment measures. This report presents the first global assessment of food insecurity and malnutrition for 2020 and offers some indication of what hunger might look like by 2030 in a scenario further complicated by the enduring effects of the COVID-19 pandemic. It also includes new estimates of the cost and affordability of healthy diets, which provide an important link between the food security and nutrition indicators and the analysis of their trends. Altogether, the report highlights the need for a deeper reflection on how to better address the global food security and nutrition situation.To understand how hunger and malnutrition have reached these critical levels, this report draws on the analyses of the past four editions, which have produced a vast, evidence-based body of knowledge of the major drivers behind the recent changes in food security and nutrition. These drivers, which are increasing in frequency and intensity, include conflicts, climate variability and extremes, and economic slowdowns and downturns – all exacerbated by the underlying causes of poverty and very high and persistent levels of inequality. In addition, millions of people around the world suffer from food insecurity and different forms of malnutrition because they cannot afford the cost of healthy diets. From a synthesized understanding of this knowledge, updates and additional analyses are generated to create a holistic view of the combined effects of these drivers, both on each other and on food systems, and how they negatively affect food security and nutrition around the world.In turn, the evidence informs an in-depth look at how to move from silo solutions to integrated food systems solutions. In this regard, the report proposes transformative pathways that specifically address the challenges posed by the major drivers, also highlighting the types of policy and investment portfolios required to transform food systems for food security, improved nutrition, and affordable healthy diets for all. The report observes that, while the pandemic has caused major setbacks, there is much to be learned from the vulnerabilities and inequalities it has laid bare. If taken to heart, these new insights and wisdom can help get the world back on track towards the goal of ending hunger, food insecurity, and malnutrition in all its forms. -
BookletCorporate general interestEmissions due to agriculture
Global, regional and country trends 2000–2018
2021Also available in:
No results found.The FAOSTAT emissions database is composed of several data domains covering the categories of the IPCC Agriculture, Forestry and Other Land Use (AFOLU) sector of the national GHG inventory. Energy use in agriculture is additionally included as relevant to emissions from agriculture as an economic production sector under the ISIC A statistical classification, though recognizing that, in terms of IPCC, they are instead part of the Energy sector of the national GHG inventory. FAO emissions estimates are available over the period 1961–2018 for agriculture production processes from crop and livestock activities. Land use emissions and removals are generally available only for the period 1990–2019. This analytical brief focuses on overall trends over the period 2000–2018.