Fishing activity in the Amazon basin has been declining in regards to fish production and the diversity of the catch has been altered due to anthropic interferences due to hydro-electric dams built on the main rivers of this region. Data were collected regarding the landings of the fisheries together with the fishing colonies in the Guaporé River basin for the decade before and after 2009. This benchmark is important since it relates to the installation of two hydroelectric dams in the Madeira River in the State of Rondônia, Brazil. We recorded 37 groups of fish species belonging mainly to the orders Siluriformes and Characiformes, which together represented 86.39 % of fish landed. Of this total, 59.46 % showed significant differences in mean production before and after damming of the rivers in the state of Rondônia. The average fish landings between the two periods showed distinct linearities of growth (r² = 0.66) and decline (r² = 0.02) during the study period. The results showed variations in both fishing production and reorganization (trophic plasticity) in the fish diversity of the region.

亚马逊流域的捕鱼活动在鱼类生产方面一直在下降，由于该地区主要河流上建造的水电大坝造成的人为干扰，渔获物的多样性已经改变。收集了有关 2009 年前后十年内瓜波雷河流域渔业和渔区上岸量的数据。该基准很重要，因为它涉及在朗多尼亚州的马德拉河安装两座水电大坝， 巴西。我们记录了 37 组鱼类，主要属于鲶形目和字符形目，占上岸鱼类的 86.39%。其中，59.46% 的朗多尼亚州河流筑坝前后平均产量存在显着差异。在研究期间，两个时期之间的平均鱼上岸量显示出明显的增长 (r² = 0.66) 和下降 (r² = 0.02) 线性。结果表明，该地区鱼类多样性的捕捞产量和重组（营养可塑性）均存在差异。