Mayflies and drought – how survive in the intermittent streams?

a 2015

Mayflies and drought – how survive in the intermittent streams?

POLÁŠEK, Marek, Petr PAŘIL, Světlana ZAHRÁDKOVÁ a Vít SYROVÁTKA

Základní údaje

Originální název

Mayflies and drought – how survive in the intermittent streams?

Autoři

POLÁŠEK, Marek (203 Česká republika, garant, domácí), Petr PAŘIL (203 Česká republika, domácí), Světlana ZAHRÁDKOVÁ (203 Česká republika, domácí) a Vít SYROVÁTKA (203 Česká republika, domácí)

Vydání

In XIV International Conference on Ephemeroptera and Plecoptera, Aberdeen, 31 May - 5 June, 2015

Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10600 1.6 Biological sciences

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Kód RIV

RIV/00216224:14310/15:00083638

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

mayflies; drying-up of streams; bioindication; species traits

Změněno: 26. 8. 2015 19:58, doc. RNDr. Petr Pařil, Ph.D.

Anotace

V originále

Global climate change brings to Central Europe remarkable alterations in hydrological regime – more frequent floods and also quite new phenomena – drying up of the small watercourses. In the Czech Republic, small streams and rivers (up to 4th Strahler order) constitute 80% of length of all watercourses. According to climate models, we expect that drought will be crucial problem in the future. The ongoing project "Drying up of streams during climate change" (acronym BIODROUGHT) is focused on the impact of drought on macroinvertebrate communities and the main goal of this project is to develop a method of retrospective biological indication of dry episodes based on the analysis of taxonomic and functional composition of macroinvertebrate assemblages. One of the most drought sensitive taxa are mayflies (Ephemeroptera). In this project, we compared mayfly taxocenoses in permanent and intermittent streams in the Czech Republic. The dataset used for the comparison include data from samples from 13 pairs of streams (permanent + intermittent) collected in years 2012 – 2014. All samples were taken in spring and autumn on relatively unimpacted streams without an obvious pollution and/or hydromorphological alterations. The results show that drought has apparent impact on mayfly taxocenoses in the total number of taxa and also the abundances were lower at the intermittent sites in comparison with the permanent ones. The representation of specific species-traits (for example voltinism) differed between both types of streams. Moreover, some drought sensitive taxa could be considered as permanency indicators (e.g. Epeorus assimilis). Using the combination of different metrics and approaches, it seems to be possible to distinguish between intermittent and permanent sites according to the composition of mayfly taxocoenes. This study was supported by the Technology Agency of the Czech Republic (No. TA02020395 and Project No. MUNI/A/0888/2013).

Citovat

POLÁŠEK, Marek, Petr PAŘIL, Světlana ZAHRÁDKOVÁ a Vít SYROVÁTKA. Mayflies and drought – how survive in the intermittent streams? In In XIV International Conference on Ephemeroptera and Plecoptera, Aberdeen, 31 May - 5 June. 2015.

@proceedings{1309204,
   author = {Polášek, Marek and Pařil, Petr and Zahrádková, Světlana and Syrovátka, Vít},
   booktitle = {In XIV International Conference on Ephemeroptera and Plecoptera, Aberdeen, 31 May - 5 June},
   keywords = {mayflies; drying-up of streams; bioindication; species traits},
   language = {eng},
   title = {Mayflies and drought – how survive in the intermittent streams?},
   year = {2015}
}

TY  - CONF
ID  - 1309204
AU  - Polášek, Marek - Pařil, Petr - Zahrádková, Světlana - Syrovátka, Vít
PY  - 2015
TI  - Mayflies and drought – how survive in the intermittent streams?
KW  - mayflies
KW  - drying-up of streams
KW  - bioindication
KW  - species traits
N2  - Global climate change brings to Central Europe remarkable alterations in hydrological regime – more frequent floods and also quite new phenomena – drying up of the small watercourses. In the Czech Republic, small streams and rivers (up to 4th Strahler order) constitute 80% of length of all watercourses. According to climate models, we expect that drought will be crucial problem in the future. The ongoing project "Drying up of streams during climate change" (acronym BIODROUGHT) is focused on the impact of drought on macroinvertebrate communities and the main goal of this project is to develop a method of retrospective biological indication of dry episodes based on the analysis of taxonomic and functional composition of macroinvertebrate assemblages. One of the most drought sensitive taxa are mayflies (Ephemeroptera). In this project, we compared mayfly taxocenoses in permanent and intermittent streams in the Czech Republic. The dataset used for the comparison include data from samples from 13 pairs of streams (permanent + intermittent) collected in years 2012 – 2014. All samples were taken in spring and autumn on relatively unimpacted streams without an obvious pollution and/or hydromorphological alterations. The results show that drought has apparent impact on mayfly taxocenoses in the total number of taxa and also the abundances were lower at the intermittent sites in comparison with the permanent ones. The representation of specific species-traits (for example voltinism) differed between both types of streams. Moreover, some drought sensitive taxa could be considered as permanency indicators (e.g. Epeorus assimilis). Using the combination of different metrics and approaches, it seems to be possible to distinguish between intermittent and permanent sites according to the composition of mayfly taxocoenes. This study was supported by the Technology Agency of the Czech Republic (No. TA02020395 and Project No. MUNI/A/0888/2013).
ER  -

POLÁŠEK, Marek, Petr PAŘIL, Světlana ZAHRÁDKOVÁ a Vít SYROVÁTKA. Mayflies and drought – how survive in the intermittent streams? In \textit{In XIV International Conference on Ephemeroptera and Plecoptera, Aberdeen, 31 May - 5 June}. 2015.

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