The Amazon Basin is the largest in the world and for many of its inhabitants fishing is a crucially important source of food and income. However, the benefits derived from mostly informal, part time, seasonal, and subsistence-based activities such as fishing are largely invisible to policy-makers, and addressing the threats to aquatic habitats, ecosystem functioning, and fisheries is frequently given low priority in national development agendas. To estimate the total extraction of fish in the Amazon Basin, we reviewed various publications and databases with quantitative data related to the landings, trade, and consumption of fish. We estimated the total landings to be between 422,000 and 473,000 t yr-1 in live weight, near to previous estimates. Almost 75%, however, represented landings in the Brazilian part of the basin, and there is a very large margin of uncertainty given that, among other issues, there are no recent official statistics on commercial landings. Conversely, landings in Bolivia, Colombia, and Ecuador seem to be considerably higher than previously thought. In all Amazonian countries, from 50% up to almost 100% of the fishing takes place for personal consumption, implying that it is not recorded in official landing statistics. Available time series data indicate that fish consumption in Brazil, as well as commercial fish landings in Peru and Colombia, have declined in recent years. Local case studies, national household consumption and expenditure surveys (HCES), and market surveys, all have their benefits and drawbacks. Some minor modifications of HCES procedures could considerably improve their usefulness for estimating fish landings in the Amazon Basin. To improve such estimates, we propose that local case studies be used to calibrate HCES data, thus combining the high precision of local case studies with the wide coverage and representativity of HCES data

中文翻译：

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量化亚马逊流域的渔获量和鱼类消费量

亚马逊盆地是世界上最大的盆地，对许多居民来说，捕鱼是至关重要的食物和收入来源。然而，政策制定者在很大程度上看不到来自大多数非正式、非全日制、季节性和以生计为基础的活动（如捕鱼）所带来的好处，解决对水生栖息地、生态系统功能和渔业的威胁在国家层面往往处于低优先级。发展议程。为了估计亚马逊流域鱼类的总开采量，我们审查了各种出版物和数据库，其中包含与鱼类上岸量、贸易和消费量相关的定量数据。我们估计总上岸量在 422,000 到 473,000 吨 yr-1 之间，接近之前的估计。然而，近 75% 代表在盆地的巴西部分登陆，鉴于除其他问题外，最近没有关于商业登陆的官方统计数据，因此存在很大的不确定性。相反，在玻利维亚、哥伦比亚和厄瓜多尔的登陆似乎比以前想象的要高得多。在所有亚马逊国家，从 50% 到几乎 100% 的捕捞活动都是为了个人消费，这意味着官方登陆统计数据中没有记录。可用的时间序列数据表明，巴西的鱼品消费量以及秘鲁和哥伦比亚的商业鱼品上岸量近年来有所下降。地方案例研究、全国家庭消费和支出调查 (HCES) 以及市场调查都有其优点和缺点。对 HCES 程序进行一些小的修改可以大大提高它们在估计亚马逊流域鱼类上岸量方面的有用性。为了改进这种估计，我们建议使用本地案例研究来校准 HCES 数据，从而将本地案例研究的高精度与 HCES 数据的广泛覆盖和代表性相结合