Vyluhování fosforu z nevyvinutých vysokohorských půd: Biotická nebo abiotická kontrola
Phosphorus leaching from undeveloped alpine soils: Biotic or abiotic control?
We will identify major environmental factors controlling P leaching from undeveloped soils in natural, unmanaged areas. We will evaluate effects of soil recovery from acidification, increasing dust deposition, and climate-accelerated physical erosion of rocks on chemistry and ability of soils to retain/release P. The most pronounced increases in lake water P concentrations (besides USA) have occurred in the Tatra Mountains, mainly in catchments with high proportion of scree and undeveloped till soils. Using local rocks, we will experimentally assess effects of climate change on their physical erosion. Then, we will evaluate effect of increased rock weathering on soil chemistry and P retaining ability. Special attention will be paid to composition of microbial community of till soils, and activity and role of its major components in P mobilization from rock and dust. Using long-term trends in chemistry and biology of lakes, we will evaluate individual and synergetic effects of recovery from acidification and climate change on the ongoing changes in their nutrient status and trophy.
Spoluřešitel PřF: Kaštovská Eva
Katedra biologie ekosystémů
(řešitel: Jiří Kaňa, BC AVČR HBU, 2020–2022 GAČR)
Autor fotografie: Jiří Kaňa