Sphagnum bleaching: Bicarbonate 'toxicity' and tolerance for seven Sphagnum species.

ABSTRACT: Growth and functioning of Sphagnum mosses are closely linked to water level and chemistry. Sphagnum mosses occur in wet, generally acidic conditions, and when buffered, alkaline water is known to negatively impact Sphagnum. The effects of time, dose and species-specific responses of buffered, alkaline water on Sphagnum are largely unknown. We investigated the effects of bicarbonate and calcium on the survival, growth and physiological functioning of seven Sphagnum species occurring in contrasting environments, from raised bogs to (rich) fens. Mosses were submerged in different concentrations of bicarbonate and calcium solutions for 10 weeks under climate-controlled circumstances. After 2 weeks, all species exposed to the high bicarbonate treatment (2.0 mM) showed severe potassium leakage a

SUBMITTER: Koks AHW 

PROVIDER: S-EPMC9544146 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature