Shellfish stable isotopes data regionally in the Gulf of Alaska in April and May 2024

Samples were collected from five sites across the Gulf of Alaska during April and May 2024: Spinnaker Sea Farms (59.4603, -151.5190) in Jakolof Bay on April 24, Bootleggers Cove Farm (59.4682, -151.5175) in Bootleggers Cove on April 23, Moss Island Oyster Farm (59.5736, -151.2745) on April 23 in Peterson Bay, Simpson Bay Oyster Co (60.6591, -145.8836) in Simpson Bay on May 7, and Salty Lady Seafood Company (58.6353, -134.9535) in Bridget Cove on May 21. Fifteen individuals of Pacific oysters (Crassostrea gigas) and 10 to 15 individuals of Pacific blue mussels (Mytilus trossulus) were obtained from each farm. In Jakolof Bay, 5 Weathervane scallops (Patinopecten caurinus) were obtained from the farm and 4 clam species were unearthed from the nearby mudflat: 15 bent-nose clams (Macoma nasuta), 4 softshell clams (Mya arenaria), 1 butter clam (Saxidomus gigantea), and 1 basket cockle (Clinocardium nuttallii). Triplicate particulate organic matter samples (2 Liters) were taken in the farm during each field collection to estimate the availability of food sources to the shellfish. Dominant macroalgae and terrestrial organic matter were collected in each timepoint. We trawled for zooplankton around the farm using a plankton net and extracted the copepods to use as a zooplankton endmember, and converted it to a phytoplankton endmember after deducting a trophic discrimination factor. All of this data is included in a .csv file with the carbon and nitrogen bulk stable isotopes and concentrations of all samples, as well as the shell size and dry weight of the shellfish.
These data are part of the Mariculture Research and Restoration Consortium (Mariculture ReCon) Component of the Exxon Valdez Oil Spill Trustee Council. Gulf Watch Alaska is the long-term ecosystem monitoring program of the Exxon Valdez Oil Spill Trustee Council for the marine ecosystem affected by the 1989 oil spill.

本数据集的样本采集于2024年4月至5月的阿拉斯加湾5处采样位点：分别为4月24日于雅科洛夫湾（Jakolof Bay）的斯皮纳克里海水养殖场（Spinnaker Sea Farms，坐标：59.4603, -151.5190）、4月23日于布特莱格湾（Bootleggers Cove）的布特莱格湾养殖场（Bootleggers Cove Farm，坐标：59.4682, -151.5175）、4月23日于彼得森湾（Peterson Bay）的莫斯岛牡蛎养殖场（Moss Island Oyster Farm，坐标：59.5736, -151.2745）、5月7日于辛普森湾（Simpson Bay）的辛普森湾牡蛎公司（Simpson Bay Oyster Co，坐标：60.6591, -145.8836），以及5月21日于布里奇特湾（Bridget Cove）的萨尔蒂·莱迪海鲜公司（Salty Lady Seafood Company，坐标：58.6353, -134.9535）。每个养殖场均采集了15只太平洋牡蛎（Pacific oyster, *Crassostrea gigas*）以及10至15只太平洋蓝贻贝（Pacific blue mussel, *Mytilus trossulus*）。在雅科洛夫湾的养殖场中，额外采集了5只气象扇贝（Weathervane scallop, *Patinopecten caurinus*），并从附近潮间带泥滩采集得到4种蛤类：15只歪形蛤蜊（bent-nose clam, *Macoma nasuta*）、4只软壳蛤（softshell clam, *Mya arenaria*）、1只黄油蛤（butter clam, *Saxidomus gigantea*）以及1只努氏篮蛤（basket cockle, *Clinocardium nuttallii*）。每次野外采样期间，均在各养殖场采集三份2升的颗粒有机质样本，以评估贝类可获取的食物源丰度。每个采样时间点均采集优势大型藻类与陆生有机质样本。研究团队使用浮游生物网在养殖场周边拖网采集浮游动物，提取桡足类作为浮游动物端元；通过扣除营养分馏系数，将其转换为浮游植物端元。所有数据均收录于单个.csv文件中，包含所有样本的碳、氮体相稳定同位素比值与浓度，以及贝类的壳长与干重。
本数据集属于埃克森·瓦尔迪兹溢油信托委员会（Exxon Valdez Oil Spill Trustee Council）下属的海水养殖研究与修复联盟（Mariculture Research and Restoration Consortium, Mariculture ReCon）项目组成部分。阿拉斯加海湾监测计划（Gulf Watch Alaska）是埃克森·瓦尔迪兹溢油信托委员会针对1989年溢油事故受影响海域开展的长期生态系统监测项目。