| PAŘIL, Petr, Vít SYROVÁTKA, Světlana ZAHRÁDKOVÁ, Michal STRAKA, Marek POLÁŠEK, Denisa NĚMEJCOVÁ, Libuše OPATŘILOVÁ, Lenka ŠIKULOVÁ a Pavla ŘEZNÍČKOVÁ. New method for retrospective bioindication of stream drying up based on the analysis of taxonomical and functional composition of aquatic macroinvertebrates. In 2nd Central European Symposium for Aquatic Macroinvertebrate Research July 3–8 2016, Pécs, Hungary. 2016. ISBN 978-963-12-5936-0. |
Další formáty:
BibTeX
LaTeX
RIS
@proceedings{1349338,
author = {Pařil, Petr and Syrovátka, Vít and Zahrádková, Světlana and Straka, Michal and Polášek, Marek and Němejcová, Denisa and Opatřilová, Libuše and Šikulová, Lenka and Řezníčková, Pavla},
booktitle = {2nd Central European Symposium for Aquatic Macroinvertebrate Research July 3–8 2016, Pécs, Hungary},
keywords = {drought; stream; aquatic macroinvertebrates; bioindication},
language = {eng},
isbn = {978-963-12-5936-0},
title = {New method for retrospective bioindication of stream drying up based on the analysis of taxonomical and functional composition of aquatic macroinvertebrates},
year = {2016}
}
TY - CONF
ID - 1349338
AU - Pařil, Petr - Syrovátka, Vít - Zahrádková, Světlana - Straka, Michal - Polášek, Marek - Němejcová, Denisa - Opatřilová, Libuše - Šikulová, Lenka - Řezníčková, Pavla
PY - 2016
TI - New method for retrospective bioindication of stream drying up based on the analysis of taxonomical and functional composition of aquatic macroinvertebrates
SN - 9789631259360
KW - drought
KW - stream
KW - aquatic macroinvertebrates
KW - bioindication
N2 - 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). Based on literature review, 35 species traits related to species resistance or resilience to drought were chosen. More than 350 indicators of stream permanency or intermittency were identified using ISA. Representation of drought sensitive groups (e.g. aquatic insects like EPT taxa) and changes in the taxonomical composition of the whole community were analysed. Season specific approach was used in the study (spring and autumn data were analysed separately) and LDA was employed to select the best combination of metrics to distinguish between the three stream types. Based on the LDA results, we defined discriminant function describing the gradient from permanent to intermittent streams, which can be used to classify each sample to one of the three distinguished stream types with defined probability. The developed method is suitable for the recognition of drought impact in stream history but also for the evaluation of measures aimed at the reduction of negative impacts of drought on water courses.
ER -
PAŘIL, Petr, Vít SYROVÁTKA, Světlana ZAHRÁDKOVÁ, Michal STRAKA, Marek POLÁŠEK, Denisa NĚMEJCOVÁ, Libuše OPATŘILOVÁ, Lenka ŠIKULOVÁ a Pavla ŘEZNÍČKOVÁ. New method for retrospective bioindication of stream drying up based on the analysis of taxonomical and functional composition of aquatic macroinvertebrates. In \textit{2nd Central European Symposium for Aquatic Macroinvertebrate Research July 3–8 2016, Pécs, Hungary}. 2016. ISBN~978-963-12-5936-0.
|
