Fairy basslet censuses at control and experimental reefs near Lee Stocking Island, Bahamas from 2009-2012 (Lionfish Invasion project)

<p>This dataset contains counts of fairy basslet censused as part of a a controlled field experiment at reefs near Lee Stocking Island, Bahamas. (Part of sub-project titled, \"Lionfish effects on fairy basslet population dynamics\".)</p> <p>To quantify to what extent patterns in prey mortality have changed since the arrival of lionfish, the investigators replicated an in situ field manipulation of prey density that was originally conducted prior to the invasion using the same study sites. A controlled field experiment was conducted at two reefs near Lee Stocking Island, Bahamas, inhabited by 16 local populations of fairy basslet: eight with artificially enhanced recruitment versus eight with natural recruitment. Ledges were paired by habitat structure and one ledge from each pair was randomly assigned to receive artificially increased density of new basslet recruits, with the other in each pair left as a control.</p>本数据集收录了在巴哈马李斯托金岛（Lee Stocking Island）附近珊瑚礁开展的一项受控野外实验中统计得到的仙女 basslet（Fairy Basslet）数量。该实验隶属于题为“蓑鲉（Lionfish）对仙女 basslet种群动态的影响”的子研究项目。 为量化蓑鲉入侵后猎物死亡率模式的变化幅度，研究人员沿用相同的研究样地，复刻了入侵前开展的原位（in situ）猎物密度野外操控实验。本次受控野外实验在巴哈马李斯托金岛附近的两处珊瑚礁开展，该区域栖息着16个本地仙女 basslet种群：其中8个种群实施人工幼体补充，另外8个种群维持自然补充。研究人员根据栖息地结构对礁架进行配对，每对礁架中随机选取一个进行新仙女 basslet幼体密度的人工提升处理，另一礁架则作为对照。