Carbon exchange responses of rehydrated and incubated biological soil crust samples from White Sands National Park in 2020-2022

This dataset contains photosynthetic light response data from biological soil crusts collected from a gypsum sand sheet at White Sands National Park, NM, USA in three different seasons. This study aims to 1) assess the carbon fixation capacity of biocrust types; 2) assess biocrust carbon fixation response under varying incubation times; 3) and understand variability in carbon fixation response in different seasons. Sample collection occurred in July 2020 (summer), September 2021 (fall), and March 2022 (winter). The biocrust types of interest were light cyanobacterial, dark cyanobacterial, Peltula lichen, Clavascidium lichen, and moss crusts. Samples were collected with the intention of taking carbon fixation measurements after different incubation periods (30 min, 2 hr, 6 hr, 12hr, or 24 hr in 2020, and 30 min, 2 hr, 6 hr, 12hr, 24 hr, or 36 hr in 2021 and 2022). For each condition (biocrust type and incubation time) there were five replicates in 2020 (total n=125) and ten replicates in 2021 and 2022 (total n=300). After collection, the intact samples were re-wetted and subjected to their respective incubation period and measured for photosynthetic response. The resulting light response curves and photosynthetic information was be used for comparing biocrust type, incubation time response differences, and seasonal variation to understand variability of biocrust carbon flux response at a single site. This data set includes the light response curve values and photosynthetic data calculated from these curves and raw LICOR output files compiled into 3 spreadsheet files. The included 2020 data is also associated with the White Sands National Park data from Jornada Study 549. This dataset accompanies the in-press article by Hoellrich et al. (2023) cited below, and the study is now complete. Hoellrich, Mikaela R., Darren K. James, David Bustos, Anthony Darrouzet-Nardi, Louis S. Santiago, and Nicole Pietrasiak. "Biocrust carbon exchange varies with crust type and time on Chihuahuan Desert gypsum soils." Frontiers in Microbiology 14:1128631.本数据集收录了采自美国新墨西哥州白沙国家公园石膏砂质荒漠的生物土壤结皮（biological soil crusts）光合光响应数据，样本采集覆盖三个不同季节。本研究旨在达成三项目标：1）评估不同类型生物土壤结皮的固碳能力；2）解析不同培养时长下生物土壤结皮的固碳响应特征；3）阐明不同季节中固碳响应的变异规律。样本采集分别于2020年7月（夏季）、2021年9月（秋季）及2022年3月（冬季）完成。本研究关注的生物土壤结皮类型包括浅蓝藻结皮、深蓝藻结皮、Peltula属地衣（Peltula lichen）、Clavascidium属地衣（Clavascidium lichen）以及苔藓结皮。样本采集后将开展不同时长的培养以进行固碳量测定：2020年的培养时长为30 min、2 h、6 h、12 h、24 h；2021年与2022年的培养时长为30 min、2 h、6 h、12 h、24 h、36 h。各处理组合（生物土壤结皮类型+培养时长）的生物学重复数为：2020年每组5次重复，总样本量n=125；2021年与2022年每组10次重复，总样本量n=300。采集得到的完整样本经复水处理后，按对应培养时长进行培养，并测定其光合响应。所得光响应曲线与光合相关数据可用于对比不同生物土壤结皮类型、培养时长的响应差异及季节变异特征，从而解析单一站点下生物土壤结皮碳通量响应的变异规律。本数据集包含光响应曲线数值、基于曲线计算得到的光合相关数据，以及整理为3个电子表格文件的LICOR原始输出文件。其中2020年数据集同时关联自Jornada研究项目549的白沙国家公园相关数据。本数据集配套Hoellrich等人（2023）即将发表的研究论文，该研究现已完成。引用信息如下：Hoellrich, Mikaela R., Darren K. James, David Bustos, Anthony Darrouzet-Nardi, Louis S. Santiago, and Nicole Pietrasiak. "Biocrust carbon exchange varies with crust type and time on Chihuahuan Desert gypsum soils." Frontiers in Microbiology 14:1128631.