Changes in surface water chemistry caused by natural forest dieback in an unmanaged mountain catchment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F17%3A43895539" target="_blank" >RIV/60076658:12310/17:43895539 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60077344:_____/17:00479714

Výsledek na webu

<a href="https://ac.els-cdn.com/S0048969717301584/1-s2.0-S0048969717301584-main.pdf?_tid=2465af6c-eccf-11e7-a6fd-00000aab0f01&acdnat=1514576187_aae55bea0ba4f0ab14cfab80ac2ec2af" target="_blank" >https://ac.els-cdn.com/S0048969717301584/1-s2.0-S0048969717301584-main.pdf?_tid=2465af6c-eccf-11e7-a6fd-00000aab0f01&acdnat=1514576187_aae55bea0ba4f0ab14cfab80ac2ec2af</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.scitotenv.2017.01.148" target="_blank" >10.1016/j.scitotenv.2017.01.148</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Changes in surface water chemistry caused by natural forest dieback in an unmanaged mountain catchment

Popis výsledku v původním jazyce

Ionic and nutrient compositions of throughfall, tributaries and lake outlet were analysed in the Plegne catchment lake system (an unmanaged mountain forest in Central Europe) from 1997 to 2016. The aim was to evaluate changes in surface water chemistry after natural forest dieback. In the 2004-2008, 93% of the Norway spruce trees were killed by bark beetle outbreak, and all dead biomass remained in the catchment. Forest dieback changed the chemistry of all water fluxes, and the magnitude, timing, and duration of these changes differed for individual water constituents. The most pronounced decreases in throughfall concentrations occurred for K+, dissolved organic carbon (DOC), Ca2+ and Mg2+, i.e. elements mostly originating from canopy leaching, while concentrations of NH4+ and soluble reactive phosphorus (SRP) remained almost unaffected. In tributaries, the most rapid changes were increases in NO3-, K+, H+ and ionic aluminium (Al-i) concentrations, while terrestrial export of DOC and P forms started more slowly. Immediately after the forest dieback, increase in NO-3 concentrations was delayed by elevated DOC availability in soils. NO3- became the dominant anion, with maximuni concentrations up to 346 mu eq L-1 within 5-7 years after the bark beetle outbreak, and then started to decrease. Terrestrial exports of All, K+, H+, me, and Ca2+ accompanied NO3- leaching, but their trends differed due to their different sources. Elevated losses of SRP, DOC, and dissolved organic nitrogen continued until the end of the study. In the lake, microbial processes significantly decreased concentrations of NO3-, organic add anions, H+ and Ali(,), and confounded the chemical trends observed in tributaries. Our results suggest that terrestrial losses of elements and the deterioration of waters after forest dieback are less pronounced in unmanaged than managed (clear-cut) catchments.

Název v anglickém jazyce

Changes in surface water chemistry caused by natural forest dieback in an unmanaged mountain catchment

Popis výsledku anglicky

Ionic and nutrient compositions of throughfall, tributaries and lake outlet were analysed in the Plegne catchment lake system (an unmanaged mountain forest in Central Europe) from 1997 to 2016. The aim was to evaluate changes in surface water chemistry after natural forest dieback. In the 2004-2008, 93% of the Norway spruce trees were killed by bark beetle outbreak, and all dead biomass remained in the catchment. Forest dieback changed the chemistry of all water fluxes, and the magnitude, timing, and duration of these changes differed for individual water constituents. The most pronounced decreases in throughfall concentrations occurred for K+, dissolved organic carbon (DOC), Ca2+ and Mg2+, i.e. elements mostly originating from canopy leaching, while concentrations of NH4+ and soluble reactive phosphorus (SRP) remained almost unaffected. In tributaries, the most rapid changes were increases in NO3-, K+, H+ and ionic aluminium (Al-i) concentrations, while terrestrial export of DOC and P forms started more slowly. Immediately after the forest dieback, increase in NO-3 concentrations was delayed by elevated DOC availability in soils. NO3- became the dominant anion, with maximuni concentrations up to 346 mu eq L-1 within 5-7 years after the bark beetle outbreak, and then started to decrease. Terrestrial exports of All, K+, H+, me, and Ca2+ accompanied NO3- leaching, but their trends differed due to their different sources. Elevated losses of SRP, DOC, and dissolved organic nitrogen continued until the end of the study. In the lake, microbial processes significantly decreased concentrations of NO3-, organic add anions, H+ and Ali(,), and confounded the chemical trends observed in tributaries. Our results suggest that terrestrial losses of elements and the deterioration of waters after forest dieback are less pronounced in unmanaged than managed (clear-cut) catchments.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10619 - Biodiversity conservation

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Science of the Total Environment

ISSN

0048-9697

e-ISSN

—

Svazek periodika

584

Číslo periodika v rámci svazku

APR 15 2017

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

971-981

Kód UT WoS článku

000399358500094

EID výsledku v databázi Scopus

—