Counts of fairy basslet and predator species at reefs near Eleuthera, Bahamas following the establishment of experiment treatments in 2012 (Lionfish Invasion project)

<p>This dataset contains counts of fairy basslet and predator species at reefs near Eleuthera, Bahamas following the establishment of experiment treatments.</p>

<p>To rigorously test whether and how lionfish have altered prey density-dependent dynamics, a manipulation was conducted of both basslet and lionfish densities in a cross-factored design, such that differences in patterns of mortality between treatments could be attributable to lionfish predation alone. Because density-dependent basslet mortality was attributed to predators aggregating preferentially near high prey concentrations, predatory behavior of both native and invasive predators was also examined in order to determine whether differences in any aggregative response could explain different patterns of prey mortality.</p>

<p>Related Datasets from sub-project \"Lionfish alter density dependence in fairy basslet\":<br />
<a href=\"http://osprey.bco-dmo.org/dataset.cfm?id=14320&amp;flag=view\" target=\"_blank\">fairy basslet baseline density</a><br />
<a href=\"http://osprey.bco-dmo.org/dataset.cfm?id=14321&amp;flag=view\" target=\"_blank\">predator surveys Eleuthera</a></p>

本数据集记录了巴哈马埃卢塞拉附近海域珊瑚礁在实验处理设置完成后，仙女鲈（fairy basslet）与捕食者物种的种群计数数据。

为严格验证狮子鱼（lionfish）是否以及如何改变猎物的密度依赖动态，本研究采用析因实验设计对仙女鲈与狮子鱼的种群密度进行操控，确保各组间死亡率模式的差异仅可归因于狮子鱼的捕食作用。鉴于此前研究将仙女鲈的密度依赖型死亡归因于捕食者优先聚集于高猎物浓度区域，本研究同时观测了本地与入侵捕食者的捕食行为，以探究聚集响应的差异是否能够解释猎物死亡率模式的差异。

来自子项目「狮子鱼改变仙女鲈密度依赖关系」的关联数据集：<br />
<a href="http://osprey.bco-dmo.org/dataset.cfm?id=14320&amp;flag=view" target="_blank">仙女鲈基线密度</a><br />
<a href="http://osprey.bco-dmo.org/dataset.cfm?id=14321&amp;flag=view" target="_blank">埃卢塞拉捕食者调查</a>