Abundance of fish eggs and larvae in the northen and central Benguela upwelling region during the "SNEC" surveys (September 1995 and April 1996) [Dataset]

This dataset provides information on the diversity, distribution and abundance of ichthyoplankton in the northen and Central Benguela Current region (southeastern Atlantic) during intense upwelling (September 1995) and quiescent upwelling (April 1996) months. The number of eggs and larvae correspond to abundances integrated through the first 200 m of the water column. During intense upwelling season there was a clear segregation of coast and oceanic taxa. Two species, the lanternfish Lampanyctodes hectoris and the lightfish Maurolicus muelleri, dominated the oceanic area, while in the coastal area, the most abundant species was Sufflogobius bibarbatus. During the quiescent season and in the northern Benguela zone, eggs and larval samples were dominated by horse mackerel (Trachurus trachurus), anchovy (Engraulis capensis) and pilchard (Sardinops ocellatus, now accepted as S. sagax)

本数据集提供了北大西洋东南部本格拉海流（Benguela Current）中北部及中部海域内鱼类浮游生物（ichthyoplankton）的多样性、分布与丰度信息，涵盖1995年9月（强上升流月份）与1996年4月（静息上升流月份）两个采样时段。本次统计的鱼卵与仔鱼丰度为水柱前200米的积分丰度。强上升流季期间，近岸类群与远洋类群呈现出清晰的分布分隔：远洋海域的优势类群为赫氏灯笼鱼（Lampanyctodes hectoris）与缪氏光鱼（Maurolicus muelleri）两种发光鱼类；而近岸海域的优势物种为多棘缟虾虎鱼（Sufflogobius bibarbatus）。在静息上升流季的本格拉海流北部海域，鱼卵与仔鱼样本的优势类群为竹荚鱼（Trachurus trachurus）、南非鳀（Engraulis capensis）以及沙丁鱼（Sardinops ocellatus，现分类学上接受为S. sagax）