C, N Stable Isotope (delta) values for Rio Grande fishes from 1939-2002

Isotopic ratios for carbon and nitrogen reported in delta values (per mil) for fishes obtained from the Museum of Southwestern Biology (MSB) at the University of New Mexico for study of aquatic food web change over time. Sample No.= sequential number to track and count samples, Catalog No. = MSB catalog number, Field No. = number linking to field notes of Melanie S. Edwards, Species = taxonomic name, Date Range = years pooled for comparison, Location = sample site on the Rio Grande, New Mexico,delta 15N, delta 13C, Day, Month, Year. CORRECTED DATA: 1.0 per mil HAS BEEN ADDED TO CARBON, 0.5 SUBTRACTED FROM NITROGEN FOR SAMPLES WITH MSB CATALOG NUMBER. 2002 DATA ARE UNCORRECTED.

本数据集收录了从新墨西哥大学西南生物学博物馆（Museum of Southwestern Biology, MSB）获取的鱼类样本的碳、氮同位素比值，以δ值（单位为千分比）形式报告，用于开展水生食物网随时间变化的相关研究。各字段含义如下：样本编号（Sample No.）：用于追踪与计数样本的连续编号；馆藏编号（Catalog No.）：西南生物学博物馆的官方馆藏编号；野外编号（Field No.）：与梅兰妮·S.爱德华兹（Melanie S. Edwards）的野外记录相关联的编号；物种（Species）：样本的分类学名称；时间范围（Date Range）：用于对比分析的合并采样年份；采样地点（Location）：新墨西哥州格兰德河（Rio Grande）上的具体采样位点；数据集同时包含δ¹⁵N、δ¹³C、采样日、采样月、采样年的相关数据。数据校正说明：对于带有西南生物学博物馆馆藏编号的样本，其碳同位素数值需增加1.0千分比，氮同位素数值需减少0.5千分比；2002年的所有样本数据未进行上述校正。