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در هنگام آماده کردن وعده های غذایی، دست ها، ابزار آلات و سطوح آشپزخانه را تمیز کنید

jun/20












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    Meeting
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    Global Symposium on Soil Erosion - Concept Note
    Rome, Italy, 15-17 May 2018
    2019
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    Document
    Other document
    Global trade statistical update - Small Pelagics
    FAO GLOBEFISH, April 2019
    2019
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    This update focuses on trends in trade flows for the major product groups and most important traders using the most recently available data. Data is sourced from the relevant trade statistics agency of the respective reporting country or territory. Due to differences in reporting lag, global level data will exclude any trade that had not been reported by the relevant reporting body as of the last month specified for year-to-date aggregation. Product groups are aggregated at the 6-digit Harmonized System (HS) level and will exclude any trade that is reported under other 6-digit HS codes whose commodity descriptions are insufficiently specific.
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    Technical study
    Deep-ocean climate change impacts on habitat, fish and fisheries
    FAO Fisheries and Aquaculture Technical Paper No. 638
    2019
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    This publication presents the outcome of a meeting between the FAO/UNEP ABNJ Deep-seas and Biodiversity project and the Deep Ocean Stewardship Initiative. It focuses on the impacts of climatic changes on demersal fisheries, and the interactions of these fisheries with other species and vulnerable marine ecosystems. Regional fisheries management organizations rely on scientific information to develop advice to managers. In recent decades, climate change has been a focus largely as a unidirectional forcing over decadal timescales. However, changes can occur abruptly when critical thresholds are crossed. Moreover, distribution changes are expected as populations shift from existing to new areas. Hence, there is a need for new monitoring programmes to help scientists understand how these changes affect productivity and biodiversity. The principal cause of climate change is rising greenhouse gases and other compounds in the atmosphere that trap heat causing global warming, leading to deoxygenation and acidification in the oceans. Three-dimensional fully coupled earth system models are used to predict the extent of these changes in the deep oceans at 200–2500 m depth. Trends in changes are identified in many variables, including temperature, pH, oxygen and supply of particulate organic carbon (POC). Regional differences are identified, indicating the complexity of the predictions. The response of various fish and invertebrate species to these changes in the physical environment are analysed using hazard and suitability modelling. Predictions are made to changes in distributions of commercial species, though in practice the processes governing population abundance are poorly understood in the deep-sea environment, and predicted