Search Results - "Jiří Kaňa"

Soil warming during winter period enhanced soil N and P availability and leaching in alpine grasslands: A transplant study by Kastovská, Eva, Choma, Michal, Capek, Petr, Kana, Jirí, Tahovská, Karolina, Kopácek, Jirí

“…Alpine meadows are strongly affected by climate change. Increasing air temperature prolongs the growing season and together with changing precipitation…”
Get full text

Factors Affecting the Leaching of Dissolved Organic Carbon after Tree Dieback in an Unmanaged European Mountain Forest by Kopáček, Jiří, Evans, Christopher D, Hejzlar, Josef, Kaňa, Jiří, Porcal, Petr, Šantrůčková, Hana

“…Forest disturbances affect ecosystem biogeochemistry, water quality, and carbon cycling. We analyzed water chemistry before, during, and after a dieback event…”
Get full text

Effects of Acidic Deposition on in-Lake Phosphorus Availability: A Lesson from Lakes Recovering from Acidification by Kopáček, Jiří, Hejzlar, Josef, Kaňa, Jiří, Norton, Stephen A, Stuchlík, Evžen

“…Lake water concentrations of phosphorus (P) recently increased in some mountain areas due to elevated atmospheric input of P rich dust. We show that increasing…”
Get full text

Undeveloped till soils in scree areas are an overlooked important phosphorus source for waters in alpine catchments by Kaňa, Jiří, Kaštovská, Eva, Choma, Michal, Čapek, Petr, Tahovská, Karolina, Kopáček, Jiří

“…Scree deposits in alpine catchments contain undeveloped till soils that are “hidden” between and under stones. These scree areas have no vegetation except for…”
Get full text

Changes in microclimate and hydrology in an unmanaged mountain forest catchment after insect-induced tree dieback by Kopáček, Jiří, Bače, Radek, Hejzlar, Josef, Kaňa, Jiří, Kučera, Tomáš, Matějka, Karel, Porcal, Petr, Turek, Jan

“…Hydrological and microclimatic changes after insect-induced tree dieback were evaluated in an unmanaged central European mountain (Plešné, PL) forest and…”
Get full text

Excess of Organic Carbon in Mountain Spruce Forest Soils after Bark Beetle Outbreak Altered Microbial N Transformations and Mitigated N-Saturation by Kaňa, Jiří, Tahovská, Karolina, Kopáček, Jiří, Šantrůčková, Hana

“…Mountain forests in National park Bohemian Forest (Czech Republic) were affected by bark beetle attack and windthrows in 2004-2008, followed by an extensive…”
Get full text

Climate Change Increasing Calcium and Magnesium Leaching from Granitic Alpine Catchments by Kopáček, Jiří, Kaňa, Jiří, Bičárová, Svetlana, Fernandez, Ivan J, Hejzlar, Josef, Kahounová, Marie, Norton, Stephen A, Stuchlík, Evžen

“…Climate change can reverse trends of decreasing calcium and magnesium [Ca + Mg] leaching to surface waters in granitic alpine regions recovering from…”
Get full text

Increased Saprotrophic Activity and Phosphate Leaching Following Forest Soil Decomposition without Root Access by Karolina Tahovská, Michal Choma, Petr Čapek, Eva Kaštovská, Jiří Kaňa, Jiří Kopáček

“…By incubating the soil without living roots in situ at two spruce forest sites, we simulated the effects of tree dieback and interrupted mycorrhizal…”
Get full text

Microbial N immobilization is of great importance in acidified mountain spruce forest soils by Tahovská, Karolina, Kaňa, Jiří, Bárta, Jiří, Oulehle, Filip, Richter, Andreas, Šantrůčková, Hana

“…The prevailing N saturation paradigm still considers microbial N immobilization as a less important process of ecosystem N retention. On the contrary, we…”
Get full text

Phosphate Sorption Characteristics of European Alpine Soils by Kaňa, Jiří, Kopacek, Jiri, Camarero, Lluis, Garcia-Pausas, Jordi

“…We evaluated the chemical properties controlling phosphate (PO4–P) sorption characteristics of alpine soils at elevations of 1725 to 2900 m above sea level in…”
Get full text

Carbon and nutrient pools and fluxes in unmanaged mountain Norway spruce forests, and losses after natural tree dieback by Kopáček, Jiří, Bače, Radek, Choma, Michal, Hejzlar, Josef, Kaňa, Jiří, Oulehle, Filip, Porcal, Petr, Svoboda, Miroslav, Tahovská, Karolina

“…Forest areas infected by insects are increasing in Europe and North America due to accelerating climate change. A 2000-2020 mass budget study on major elements…”
Get full text

Diverse effects of accelerating climate change on chemical recovery of alpine lakes from acidic deposition in soil-rich versus scree-rich catchments by Kopáček, Jiří, Kaňa, Jiří, Porcal, Petr, Stuchlík, Evžen

“…The current recovery of mountain lakes from atmospheric acidification is increasingly affected (both accelerated and/or delayed) by climate change. We…”
Get full text

The concentration of organic nitrogen in mountain lakes is increasing as a result of reduced acid deposition and climate change by Kopáček, Jiří, Brahney, Janice, Kaňa, Jiří, Kopáček, Marek, Porcal, Petr, Stuchlík, Evžen

“…The ionic and nutrient composition of mountain lakes recovering from atmospheric acidification is increasingly influenced by climate change (increasing air…”
Get full text

The chemical composition of forest soils and their degree of acidity in Central Europe by Šantrůčková, Hana, Cienciala, Emil, Kaňa, Jiří, Kopáček, Jiří

“…We conducted an extensive screening of forest soils in the whole area of the Czech Republic to determine their degree of acidification and potential…”
Get full text

Dynamics and variability of microclimate in an unmanaged mountain forest after a bark beetle outbreak by Kopáček, Jiří, Bače, Radek, Grill, Stanislav, Hejzlar, Josef, Kaňa, Jiří, Porcal, Petr, Turek, Jan

Get full text

Effects of Bark Beetle Disturbance on Soil Nutrient Retention and Lake Chemistry in Glacial Catchment by Oulehle, Filip, Wright, Richard F., Svoboda, Miroslav, Bace, Radek, Matějka, Karel, Kaňa, Jiří, Hruška, Jakub, Couture, Raoul-Marie, Kopáček, Jiří

“…Forest ecosystems worldwide are subjected to human-induced stressors, including eutrophication and acidification, and to natural disturbances (for example,…”
Get full text

Coupling the resource stoichiometry and microbial biomass turnover to predict nutrient mineralization and immobilization in soil by Čapek, Petr, Choma, Michal, Tahovská, Karolina, Kaňa, Jiří, Kopáček, Jiří, Šantrůčková, Hana

“…•Stoichiometry-based relationship fails to predict nutrient mineralization in soil.•Soil microbes use decaying microbial biomass as a nitrogen source.•The…”
Get full text

Effects of tree dieback on lake water acidity in the unmanaged catchment of Plešné Lake, Czech Republic by Kopáček, Jiří, Kaňa, Jiří, Porcal, Petr, Vrba, Jaroslav, Norton, Stephen A.

“…Terrestrial exports of protons (H⁺), nitrate (NO₃⁻), dissolved organic carbon including organic acid anions (A⁻), phosphorus (P), base cations, and ionic…”
Get full text

Surviving trees are key elements in the fate of ectomycorrhizal community after severe bark-beetle forest disturbance by Choma, Michal, Bače, Radek, Čapek, Petr, Kaňa, Jiří, Kaštovská, Eva, Tahovská, Karolina, Kopáček, Jiří

“…Abstract Bark beetle disturbances are a critical event in the life cycle of Norway spruce forests. However, our knowledge of their effects on ectomycorrhizal…”
Get full text

Tree dieback and related changes in nitrogen dynamics modify the concentrations and proportions of cations on soil sorption complex by Kaňa, Jiří, Kopáček, Jiří, Tahovská, Karolina, Šantrůčková, Hana

“…•Tree dieback in an unmanaged forest significantly affected soil and water chemistry.•Soil base cations doubled, and replaced 30% of exchangeable acidity…”
Get full text