New method for retrospective bioindication of stream drying up based on the analysis of taxonomical and functional composition of aquatic macroinvertebrates

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F16%3A00090328" target="_blank" >RIV/00216224:14310/16:00090328 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

New method for retrospective bioindication of stream drying up based on the analysis of taxonomical and functional composition of aquatic macroinvertebrates

Popis výsledku v původním jazyce

Flow abruption or complete drying up of small streams (up to 4th Strahler order) has become more frequent in the temperate zone in the last decades as a consequence of climate change together with human alterations of hydrological regime. The novel method developed for Czech streams during the BIODROUGHT project (biodrought.eu) enables retrospective bioindication of dry episodes in stream history using benthic macroinvertebrates. The method comprises the calculation of biological metrics related to drought duration and the spatial extent of affected stretch to evaluate the magnitude of stream impairment by drought during the preceding vegetation season. The dry episode is defined as the abruption of flow continuity and three stream types were distinguished: permanent,vulnerable and intermittent. Multihabitat kick samples were taken from 20 streams (arranged in 10 pairs consisting from permanent and intermittent stream) in spring and autumn seasons (2012-14).

Název v anglickém jazyce

New method for retrospective bioindication of stream drying up based on the analysis of taxonomical and functional composition of aquatic macroinvertebrates

Popis výsledku anglicky

Flow abruption or complete drying up of small streams (up to 4th Strahler order) has become more frequent in the temperate zone in the last decades as a consequence of climate change together with human alterations of hydrological regime. The novel method developed for Czech streams during the BIODROUGHT project (biodrought.eu) enables retrospective bioindication of dry episodes in stream history using benthic macroinvertebrates. The method comprises the calculation of biological metrics related to drought duration and the spatial extent of affected stretch to evaluate the magnitude of stream impairment by drought during the preceding vegetation season. The dry episode is defined as the abruption of flow continuity and three stream types were distinguished: permanent,vulnerable and intermittent. Multihabitat kick samples were taken from 20 streams (arranged in 10 pairs consisting from permanent and intermittent stream) in spring and autumn seasons (2012-14).

Druh

O - Ostatní výsledky

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

—

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

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