Seawater carbonate chemistry and palatability of two Antarctic macroalgae and the consumption of a grazer

Two common and ecologically important macroalgal species from the western Antarctic Peninsula, the unpalatable Desmarestia menziesii and the palatable Palmaria decipiens, were maintained under three pH treatments: ambient (pH 8.1), near future (7.7) and distant future (7.3) for 52 days and 18 days, respectively. Discs of P. decipiens or artificial foods containing extracts of D. menziesii from each treatment were presented to the amphipod Gondogeneia antarctica in feeding choice experiments. Additionally, G. antarctica exposed to the different treatments for 55 days were used in a feeding assay with untreated P. decipiens.This dataset is included in the OA-ICC data compilation maintained in the framework of the IAEA Ocean Acidification International Coordination Centre (see https://oa-icc.ipsl.fr). Original data were downloaded from U.S. Antarctic Program (USAP) Data Center (see Source) by the OA-ICC data curator. In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2024) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2025-03-13.

来自南极半岛西部的两种常见且具有重要生态意义的大型藻类（macroalgal）物种——不可食的Desmarestia menziesii和可食的Palmaria decipiens——分别在环境pH（8.1）、近未来（7.7）和远未来（7.3）三种pH处理条件下培养52天和18天。在摄食选择实验中，将各处理组的P. decipiens圆片或含D. menziesii提取物的人工饲料提供给端足类（amphipod）Gondogeneia antarctica。此外，将暴露于不同处理条件55天的G. antarctica用于未处理P. decipiens的摄食分析。本数据集包含在国际原子能机构（IAEA）海洋酸化国际协调中心（Ocean Acidification International Coordination Centre）框架下维护的OA-ICC数据汇编中（详见https://oa-icc.ipsl.fr）。原始数据由OA-ICC数据管理员从美国南极计划（U.S. Antarctic Program，USAP）数据中心下载（详见来源）。为确保与其他海洋酸化数据集的完全可比性，使用R包seacarb（Gattuso等，2024）计算了一套完整且一致的碳酸盐系统变量，方法如Nisumaa等（2010）所述。本数据集中除存档原始值外，还包含重新计算的参数（详见相关项目负责人（PI））。使用seacarb进行碳酸盐化学计算的日期为2025-03-13。