Multiple stressors and stream macroinvertebrate community dynamics: Interactions between fine sediment grain size and flow velocity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F20%3A82135" target="_blank" >RIV/60460709:41330/20:82135 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0048969720305805" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0048969720305805</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.scitotenv.2020.137070" target="_blank" >10.1016/j.scitotenv.2020.137070</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Multiple stressors and stream macroinvertebrate community dynamics: Interactions between fine sediment grain size and flow velocity

Popis výsledku v původním jazyce

Agricultural development has resulted in the degradation of freshwater ecosystems worldwide. Two key stressors impacting streams and rivers draining agricultural catchments are deposited fine sediment (e.g. due to erosion) and reduced flows (e.g. due to water abstraction, dams, or climate change). Past studies have identified fine sediment as a master stressor in streams, but the effects of different sediment grain sizes in combination with reduced flow velocity are poorly understood. We manipulated deposited fine sediment (no added sediment silt: 0 to 0,125 mm fine sand: 0,125 to 0,250 mm coarse sand: 1 to 2 mm) and flow velocity (fast: 26,5 cm/s medium: 13,9 cm/s slow: 0,0 cm/s) simultaneously in 60 outdoor stream mesocosms. We determined the individual and combined effects of these stressors on the benthic, drifting, and emerging stream macroinvertebrate communities. Both fine sediment and reduced flow velocity had pervasive detrimental impacts on stream invertebrate communities. Negative

Název v anglickém jazyce

Multiple stressors and stream macroinvertebrate community dynamics: Interactions between fine sediment grain size and flow velocity

Popis výsledku anglicky

Agricultural development has resulted in the degradation of freshwater ecosystems worldwide. Two key stressors impacting streams and rivers draining agricultural catchments are deposited fine sediment (e.g. due to erosion) and reduced flows (e.g. due to water abstraction, dams, or climate change). Past studies have identified fine sediment as a master stressor in streams, but the effects of different sediment grain sizes in combination with reduced flow velocity are poorly understood. We manipulated deposited fine sediment (no added sediment silt: 0 to 0,125 mm fine sand: 0,125 to 0,250 mm coarse sand: 1 to 2 mm) and flow velocity (fast: 26,5 cm/s medium: 13,9 cm/s slow: 0,0 cm/s) simultaneously in 60 outdoor stream mesocosms. We determined the individual and combined effects of these stressors on the benthic, drifting, and emerging stream macroinvertebrate communities. Both fine sediment and reduced flow velocity had pervasive detrimental impacts on stream invertebrate communities. Negative

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

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

1879-1026

Svazek periodika

717

Číslo periodika v rámci svazku

2020

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

1-11

Kód UT WoS článku

000519994800086

EID výsledku v databázi Scopus

2-s2.0-85079318529