The subtropical region of the Southeast Pacific exhibits a strong onshore-offshore gradient in hydrographic conditions and biological production from the eutrophic upwelling zone to the ultra-oligotrophic oceanic area in the central South Pacific gyre (SPG). Across this gradient, zooplankton must cope with either gradual or abrupt changes in environmental conditions. Here, the distribution and diversity of hyperiid amphipods were assessed over this gradient in the upper 1000 m in relation to temperature, salinity, oxygen, chlorophyll-a, sea level anomalies, the bulk of mesozooplankton biomass and the biomass of salps, siphonophores, and other hydrozoans during October/November 2015 from the coastal zone off Chile (27° 00‵ S, 70° 52‵ W) to near Easter Island within the SPG (27° 10‵ S, 109° 20‵ W). The most frequent and abundant species were Hyperioides longipes Chevreux, 1900, Eupronoe minuta Claus, 1879, and Hyperioides sibaginis (Stebbing, 1888). Significant changes in abundance and community structure across the gradient with respect to the evaluated environmental variables and significant correlations of 17 hyperiid species with the gelatinous category other hydrozoans were found. These changes were closely linked to previously defined zonation patterns, which contained distinct species assemblages and a unique dominant species per zone. These zones represented ecoregions based on diversity patterns of hyperiids and other shared species among such ecoregions suggesting a possible ecological connectivity among the zones, promoted by mesoscale eddies travelling westward from the coastal upwelling zone to offshore waters. Environmentally forced zonation and the interactions with mesoscale features are thus suggested as the driving processes maintaining spatial patterns of diversity of the hyperiid community in the Southeast Pacific.

东南太平洋的亚热带地区在水文条件和从富营养化上升流区到南太平洋中部回旋区（SPG）的超贫营养海洋区的生物生产方面表现出强烈的陆上-近海梯度。跨越这个梯度，浮游动物必须应对环境条件的逐渐变化或突然变化。在这里，在温度梯度，盐度，氧气，叶绿素a的上限1000 m范围内，评估了双节肢动物脚纲的分布和多样性。2015年10月/ 11月从智利沿海沿岸地区（南纬27°00，南纬70°52°）到复活节岛附近的海平面异常，中层浮游生物的大部分生物量以及sal，虹吸虫和其他水生动物的生物量SPG（27°10‵ S，109°20‵ W）。最常见的和丰富的物种是Hyperioides长柄Chevreux，1900年，Eupronoe小粒克劳斯，1879年，和Hyperioides sibaginis（斯特宾，1888年）。相对于所评估的环境变量，整个梯度的丰度和群落结构发生了显着变化，并且发现了17种超有丝虫物种与其他水生动物的凝胶状物种之间的显着相关性。这些变化与先前定义的分区模式密切相关，分区模式包含不同的物种组合和每个区域独特的优势物种。这些区域代表了生态区域，这是根据超生物体和其他共享物种在这些生态区域中的多样性模式提出的，表明这些区域之间可能存在生态联系，这是由于中尺度涡旋从沿海上升流区向西移动到近海水域所推动的。