Censuses of the native prey fish populations during lionfish surveys in Eleuthera, Bahamas from July to August in 2012

<p>This was an observational field study on natural patch reefs with varying lionfish densities to determine if lionfish behavior and movements change at different local lionfish and prey fish densities. &nbsp;Each reef was visited at three times of day: dawn, midday, and dusk, and two focal lionfish were observed during each visit at each reef. Behaviors of all lionfish were recorded the moment they were first sighted (\"Initial behaviors\").&nbsp;One or two focal lionfish were observed for 10 minute intervals and all activity was recorded (\"Focal behaviors\"). &nbsp;The number of lionfish on each reef that arrived at or departed from each reef to/from the surrounding seagrass habtiat was recorded throughout each visit (\"Movement\"). &nbsp;Censuses of the native prey fish populations were conducted at the end of every visit (\"Native fish surveys\").</p> <p><span style=\"font-size:14px\"><strong>Related Manuscripts: Benkwitt, C.E. (2016)</strong></span></p> <p><span style=\"font-size:14px\"><strong>Species key for all individuals identified in this dataset - DOI:</strong> <strong>10.1575/1912/bco-dmo.655195.2</strong></span></p>本研究为一项针对不同蓑鲉（lionfish）密度的自然斑块礁开展的野外原位观测研究，旨在探究蓑鲉的行为与移动模式是否会随当地蓑鲉及猎物鱼类的密度变化而发生改变。研究人员会在一日中的三个时段对每座斑块礁开展调查：黎明、正午与黄昏，且每座礁的每次调查中都会观测2尾目标蓑鲉。所有蓑鲉在首次被观测到时的行为会被即刻记录，此部分记为“初始行为（Initial behaviors）”。选取1至2尾目标蓑鲉开展10分钟时长的连续观测，并记录其所有活动，此部分记为“目标行为（Focal behaviors）”。每次调查全程记录每座礁上进出该礁、往来于周边海草栖息地的蓑鲉数量，此部分记为“移动记录（Movement）”。每次调查结束后开展本土猎物鱼类种群普查，此部分记为“本土鱼类调查（Native fish surveys）”。 相关研究论文：Benkwitt, C.E.（2016） 本数据集所有已识别个体的物种分类检索表——数字对象标识符（DOI）：10.1575/1912/bco-dmo.655195.2