Soil biota counts from the Biotic Effects Experiment (BEE), McMurdo Dry Valleys, Antarctica (1999-2023, ongoing)

Increases in soil temperature and moisture may change the bioavailability of essential elements by altering solubility and diffusion rates in soils, or by changing the amounts of organic compounds. Long-term experiments in the Bonney, Hoare and Fryxell basins have been established with three treatments: 1) increased moisture, 2) soil warming (ITEX chambers), and 3) soil warming + increased moisture. The identification and abundance of soil biota are reported. Only control treatments have been measured since the 2014-2015 austral summer.

土壤温度与湿度的升高，可通过改变土壤中必需元素的溶解度与扩散速率，或调整有机化合物的含量，进而改变其生物可利用性。研究团队在邦尼（Bonney）、霍尔（Hoare）与弗莱克塞尔（Fryxell）盆地建立了长期控制实验，共设置三种处理方式：1）增湿处理；2）土壤增温处理（采用ITEX增温箱）；3）土壤增温与增湿复合处理。本数据集记录了土壤生物群落的种类鉴定结果与丰度数据。自2014-2015年南半球夏季起，仅对对照组处理开展了测定。