Recovery of benthic algal assemblages from acidification: how long does it take, and is there a link to eutrophication?

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F18%3A00484858" target="_blank" >RIV/86652079:_____/18:00484858 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00025798:_____/18:00000272

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10750-017-3254-8" target="_blank" >http://dx.doi.org/10.1007/s10750-017-3254-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10750-017-3254-8" target="_blank" >10.1007/s10750-017-3254-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Recovery of benthic algal assemblages from acidification: how long does it take, and is there a link to eutrophication?

Popis výsledku v původním jazyce

Acidification has adversely affected freshwater ecosystems in many areas, and recovery from acidification is often interrupted by acidic events. We lack detailed information about how benthic algae react to short-term acidic events and long-term recovery from acidification. We sampled 15 stream sites in the Czech Republic to study the effects of (a) water pH, aluminium and lead concentrations, (b) short-term acidic events, (c) 20 years of recovery from acidification and (d) high phosphorus concentrations combined with low pH on soft-bodied benthic algae. Water pH and aluminium concentrations affected benthic algal assemblages, but the acidification index periphyton (AIP) mainly reflected pH. Benthic algal assemblages reflected recent acidic events more closely than maximum or average pH. Our results indicate that the reaction of benthic algae to pH results from a fast effect of pH minima that cause sensitive species to disappear within a few months, and a slower process of dispersal and competition for resources during periods of higher pH. After an acidic event, recolonization of stream sites by sensitive species had started within 2 years, and was largely completed after 9 years. Our data indicate that acidification may mask the effect of enhanced phosphorus concentrations on benthic algal eutrophication indices.

Název v anglickém jazyce

Recovery of benthic algal assemblages from acidification: how long does it take, and is there a link to eutrophication?

Popis výsledku anglicky

Acidification has adversely affected freshwater ecosystems in many areas, and recovery from acidification is often interrupted by acidic events. We lack detailed information about how benthic algae react to short-term acidic events and long-term recovery from acidification. We sampled 15 stream sites in the Czech Republic to study the effects of (a) water pH, aluminium and lead concentrations, (b) short-term acidic events, (c) 20 years of recovery from acidification and (d) high phosphorus concentrations combined with low pH on soft-bodied benthic algae. Water pH and aluminium concentrations affected benthic algal assemblages, but the acidification index periphyton (AIP) mainly reflected pH. Benthic algal assemblages reflected recent acidic events more closely than maximum or average pH. Our results indicate that the reaction of benthic algae to pH results from a fast effect of pH minima that cause sensitive species to disappear within a few months, and a slower process of dispersal and competition for resources during periods of higher pH. After an acidic event, recolonization of stream sites by sensitive species had started within 2 years, and was largely completed after 9 years. Our data indicate that acidification may mask the effect of enhanced phosphorus concentrations on benthic algal eutrophication indices.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10503 - Water resources

Projekt

<a href="/cs/project/GA15-08124S" target="_blank" >GA15-08124S: Biogeochemická odezva lesních ekosystémů na acidifikaci, eutrofizaci, lesnické hospodaření a klimatickou změnou</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Hydrobiologia

ISSN

0018-8158

e-ISSN

—

Svazek periodika

805

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

15

Strana od-do

33-47

Kód UT WoS článku

000415692400002

EID výsledku v databázi Scopus

2-s2.0-85020182172