Pacific Reef Assessment and Monitoring Program: Stratified Random Surveys (StRS) of Reef Fish, including Benthic Estimate Data of the U.S. Pacific Reefs from 2008-01-27 to 2012-09-13 (NCEI Accession 0162472)

The stationary point count (nSPC) method is used to conduct reef fish surveys in the Hawaiian and Mariana Archipelagos, American Samoa, and the Pacific Remote Island Areas as part of NOAA's Pacific Reef Assessment and Monitoring Program (Pacific RAMP). Raw survey data includes metadata for each survey (where, when, who, area); site characteristics (depth, reef type, habitat, benthic cover); individual reef fish observations identified to the lowest taxonomic level possible (usually species) including size, count, and observation type; and parameters needed to calculate biomass and density. Visual estimates of benthic cover and topographic complexity are also recorded, with benthic organisms grouped into broad functional categories (e.g., 'Hard Coral', 'Macroalgae'). A stratified random sampling (StRS) design is employed to survey the coral reef ecosystems throughout the U.S.-Pacific regions. For all regions, the survey domain encompasses the majority of the mapped area of reef and hard bottom habitats and the stratification includes island, reef zone, and depth, with the exception of the Main Hawaiian Islands that includes habitat structure type as well. Sampling effort is allocated based on strata area.

Stationary Point Counts (nSPC) is a non-invasive underwater-survey method that enumerates the diverse components of diurnally active shallow-water reef fish assemblages. At each REA survey sites, nSPC fish surveys are conducted at 4 stations in conjunction with, but at least 10 m away from 3 consecutively-placed, 25m transect lines to quantify relatively larger (>25 cm Total Length [TL]) and more agile fish species. All fishes >25 cm TL are recorded to species-level that enter a 20 m diameter cylinder (area ~314 m2) during a timed 5-minute count. Individuals or groups are estimated to the nearest 5 cm TL size-class bin. Four replicate, 5-minute cylinder counts are conducted at each station. Care is taken to avoid over-counting large transient or schooling species. Transects lines and stations are typically set at depths of 10-15 m. Reef ledges and holes are visually searched. Stations are completed on all sides of the island/atoll, weather and sea conditions permitting. Raw survey data include species level abundance estimates.

静态点计数（nSPC）方法被应用于夏威夷群岛和马里亚纳群岛、美属萨摩亚以及太平洋偏远岛屿地区的珊瑚礁鱼类调查，作为美国国家海洋和大气管理局（NOAA）太平洋珊瑚礁评估与监测计划（Pacific RAMP）的一部分。原始调查数据包括每次调查的元数据（位置、时间、人员、区域）；场地特征（深度、礁类型、栖息地、底栖覆盖）；对可能达到最低分类级别的单个珊瑚礁鱼类观察结果（通常为物种），包括尺寸、数量和观察类型；以及计算生物量和密度的所需参数。同时记录底栖覆盖和地形复杂性的视觉估计，底栖生物被归类于广泛的功能类别（例如：“硬珊瑚”、“大型藻类”）。在美利坚合众国太平洋地区，采用分层随机抽样（StRS）设计对珊瑚礁生态系统进行考察。对于所有区域，调查区域覆盖了大部分已测绘的礁石和硬质底质栖息地，分层包括岛屿、礁区、深度，但主夏威夷群岛除外，其还包括栖息地结构类型。采样工作量根据层面积分配。

静态点计数（nSPC）是一种非侵入性水下考察方法，用于统计日间活跃的浅水珊瑚礁鱼类群落的多样性成分。在每个REA考察站点，nSPC鱼类调查在4个站点进行，与连续放置的3条25米样带至少相距10米，以量化相对较大的（>25厘米总长度[TL]）和更灵活的鱼类物种。所有>25厘米TL的鱼类均记录至物种级别，并在一个直径20米（面积约为314平方米）的圆柱体内进行定时5分钟的计数。个体或群体被估计到最近的5厘米TL尺寸分类。每个站点进行4次重复的5分钟圆柱体计数。注意避免对大型暂时性或群居物种的重复计数。样带线和站点通常设置在10-15米的深度。通过视觉搜索礁石边缘和洞穴。在天气和海况允许的情况下，在岛屿/环礁的各个方向完成站点。原始调查数据包括物种水平的丰度估计。