CALCOFI fish larvae at 66 standard stations, 1966 - ongoing

The fish larvae (ichthyoplankton) survey is conducted through the California Cooperative Fisheries Investigations program (CALCOFI, http://www.calcofi.org/). These data are a time series of fish larvae counts (or density, as number per 10 square meter of ocean surface) collected in the area of the California Current between San Diego and Avila Beach, California. Original data were filtered to facilitate consistent comparisons over time and space. The original CalCOFI fish larvae count data is available from the CoastWatch West Coast Regional Node (WCRN) at NOAA’s Pacific Fisheries Environmental Laboratory, http://coastwatch.pfeg.noaa.gov/erddap/tabledap/index.html. The dataset presented here is an aggregation of 31 data files, originally divided alphabetically by taxon (named “CalCOFI Larvae Counts, Scientific Names * to *”). The data were filtered to include only the 66 core stations with a maximum of 1 cruise per season. These 66 core stations have been most frequently sampled in the past and sampling is ongoing. CalCOFI sampling began in 1949. However, the dataset presented here begins in 1966 to include only samples that were analyzed with techniques that apply the most current and accurate identification of larvae to the species level. As the backlog of samples (i.e., before 1966) is re-examined, this dataset will be augmented with that additional, earlier data.

鱼类仔鱼（ichthyoplankton）调查由加州合作渔业调查计划（California Cooperative Fisheries Investigations, CALCOFI，http://www.calcofi.org）牵头实施。该数据集为采集于加利福尼亚州圣迭戈与阿维拉海滩之间的加州海流海域的鱼类仔鱼计数（或密度，即每10平方米洋面的个体数量）时间序列数据。原始数据已经过标准化筛选处理，以保障跨时空对比的一致性与可比性。原始CalCOFI鱼类仔鱼计数数据可从美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）太平洋渔业环境实验室的CoastWatch西海岸区域节点（WCRN，http://coastwatch.pfeg.noaa.gov/erddap/tabledap/index.html）获取。本数据集整合了31份原始数据文件，原始文件按分类单元的字母顺序命名为"CalCOFI Larvae Counts, Scientific Names * to *"。本次数据筛选仅纳入66个核心站位，且每个季节最多包含1次航次采样任务。这66个核心站位是历史上采样频次最高的海域，且当前采样工作仍在持续开展。CalCOFI的采样工作始于1949年，但本数据集的时间范围起始于1966年，仅涵盖采用当前最精准的物种级仔鱼鉴定技术分析过的样本。随着1966年之前积压的样本完成重新检视，本数据集将补充纳入这批更早的历史采样数据。