Hydrogeochemical Constraints Shape Hot Spring Microbial Community Compositions: Evidence From Acidic, Moderate‐Temperature Springs and Alkaline, High‐Temperature Springs, Southwestern Yunnan Geothermal Areas, China

Abstract

As the most prominent feature of hot springs, springwater temperature is highly related to the heat source, circulation depth, tectonic activity, and reservoir temperatures (Du et al., 2005; Guo et al., 2017). High-temperature hot springs usually have deep circulation depths and emerge from hydrothermal fields with a high frequency of tectonic activities and large terrestrial heat flow values. In contrast, low/moderate-temperature hot springs have shallow circulation depths or mix with shallow cold groundwater (

Local and global chemical shaping of bacterial communities by redox potential

“…The datasets with the lowest ranges of fitted Z C are those for water samples from neutral or alkaline hot springs in Southwestern Yunnan (Guo et al, 2021), the Eastern Tibetan Plateau (Guo et al, 2020) (see also Fig. 4), the circumneutralto-alkaline subset of New Zealand hot springs (Power et al, 2018), and Bison Pool in Yellowstone National Park, USA (Swingley et al, 2012) (A) Z C -Eh7 fits for hot spring datasets using only bacterial abundances, only archaeal abundances, or combined taxonomic abundances for both domains.…”

“…Dashed lines represent fits with a slope of less than 0.01 V -1 . Numbers for datasets are (1) Bison Pool, Yellowstone National Park (unlike the other datasets, DNA was extracted from biofilm samples) (Swingley et al, 2012), (2) acidic and (3) circumneutral to alkaline New Zealand hot springs (Power et al, 2018), (4) Dallol Geothermal Area (hypersaline and moderate to extremely acidic water) (Belilla et al, 2019), (5) Copahue Volcano-Río Agrio (Lopez Bedogni et al, 2020;Massello et al, 2020), (6) Southwestern Yunnan (seven samples with pH > 7 and two moderately acidic samples) (Guo et al, 2021), (7) Eastern Tibetan Plateau (Guo et al, 2020), (8) Uzon Caldera (nine samples for acidic water and sediment and one high-pH sample) (Peltek et al, 2020), (9) Southern Tibetan Plateau (Ma et al, 2021), (10) Japan Hydrothermal Sediment (Omae et al, 2019). See Figure S1 for individual sample values.…”