Recovery of brown trout populations in streams exposed to atmospheric acidification in the Bohemian Forest

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F17%3A43895575" target="_blank" >RIV/60076658:12310/17:43895575 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60077344:_____/17:00479373

Výsledek na webu

<a href="http://www.bioone.org/doi/pdf/10.25225/fozo.v66.i1.a2.2017" target="_blank" >http://www.bioone.org/doi/pdf/10.25225/fozo.v66.i1.a2.2017</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Recovery of brown trout populations in streams exposed to atmospheric acidification in the Bohemian Forest

Popis výsledku v původním jazyce

Water chemistry and fish occurrence in outflows from two lakes recovering from acidification were studied during 2005-2010. The two lakes represented the regional extremes: while Lake Laka (LA) was the least acidified among the Bohemian Forest lakes, Lake Certovo (CT) was the most acidified. Water chemistry improved downstream in either outlet due to mixing with less acidic water from tributaries. While pH of the LA stream was circumneutral and concentrations of ionic aluminium (Al-i) were low (&lt; 50 mu g.l(-1)) except for temporary acidic episodes during snowmelt, the CT stream remained permanently acidified with Al-i concentrations (&gt; 200 mu g.l(-1)) throughout the year and was considered as a reference site. Brown trout (Salmo trutta s.l.) survived in the LA stream already at 0.7 km from the lake. A stable trout population, including young-of-the-year fish increasing in numbers, was found in the LA stream between 2005 and 2010 despite the spring short-term acid episodes. Any recovery of the CT stream is unlikely as the outflow continued to be acidic at 1.5 km from the lake and Al-i concentrations were still by one order of magnitude higher than the limit acceptable by trout.

Název v anglickém jazyce

Recovery of brown trout populations in streams exposed to atmospheric acidification in the Bohemian Forest

Popis výsledku anglicky

Water chemistry and fish occurrence in outflows from two lakes recovering from acidification were studied during 2005-2010. The two lakes represented the regional extremes: while Lake Laka (LA) was the least acidified among the Bohemian Forest lakes, Lake Certovo (CT) was the most acidified. Water chemistry improved downstream in either outlet due to mixing with less acidic water from tributaries. While pH of the LA stream was circumneutral and concentrations of ionic aluminium (Al-i) were low (&lt; 50 mu g.l(-1)) except for temporary acidic episodes during snowmelt, the CT stream remained permanently acidified with Al-i concentrations (&gt; 200 mu g.l(-1)) throughout the year and was considered as a reference site. Brown trout (Salmo trutta s.l.) survived in the LA stream already at 0.7 km from the lake. A stable trout population, including young-of-the-year fish increasing in numbers, was found in the LA stream between 2005 and 2010 despite the spring short-term acid episodes. Any recovery of the CT stream is unlikely as the outflow continued to be acidic at 1.5 km from the lake and Al-i concentrations were still by one order of magnitude higher than the limit acceptable by trout.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10613 - Zoology

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

Folia Zoologica

ISSN

0139-7893

e-ISSN

—

Svazek periodika

66

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

10

Strana od-do

1-10

Kód UT WoS článku

000402224100001

EID výsledku v databázi Scopus

—