Different ways how to survive dry episode: a role of species traits in resistamce and/or resilience to stream intermittence

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F18%3A00103295" target="_blank" >RIV/00216224:14310/18:00103295 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Different ways how to survive dry episode: a role of species traits in resistamce and/or resilience to stream intermittence

Original language description

A significant increase of stream intermittency in the Czech Republic has been reported in the last decades. Temporal and spatial unpredictability of this phenomenon force the macroinvertebrate communities to create strategies for survival. Generally, there are two ways how to cope with the flow abruption: to stand (i.e. resistance) or to flee and return after flow resumption (i.e. resilience). We predicted that i) proportion of resistant macroinvertebrates within community will be related to the extent of dry episode and ii) the proportion of resilient taxa will rise with the time after flow resumption and iii) the general diversity metrices such as total taxa richness or total abundance are related to both –temporal extent of dry episode and duration of flow phase after flow resumption. We analysed macroinvertebrate assemblages from ten intermittent streams in the Czech Republic sampled between years 2012 and 2015. We compared different species traits representation that promotes resistance and/or resilience of macroinvertebrate communities to intermittence with relation to i) dry episode duration, ii) time span from stream flow resumption to the sampling date and iii) the newly designed metric that combines both and therefore expresses the general impact of dry episode on macroinvertebrate community. The preliminary results show that duration of dry episode plays a major role in macroinvertebrate community composition. Further, our newly designed metric describing overall intermittency impact can explain general diversity indices with great accuracy. This research was supported by INTER-COST (LTC17017) project, data were collected within BIODROUGHT project (www.biodrought.eu).

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

10617 - Marine biology, freshwater biology, limnology

Project

<a href="/en/project/LTC17017" target="_blank" >LTC17017: Validation of bioindication methods as tools for sustainable management of intermittent streams in Central European region, their transfer into the practice</a><br>

Continuities

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

Publication year

2018

Confidentiality

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