IMPACTS OF DRYING ON THE ABUNDANCE OF GAMMARUS FOSSARUM
POPULATIONS IN SMALL STREAMS IN CENTRAL EUROPE

a 2017

IMPACTS OF DRYING ON THE ABUNDANCE OF GAMMARUS FOSSARUM POPULATIONS IN SMALL STREAMS IN CENTRAL EUROPE

DOSTÁLOVÁ, Alena a Petr PAŘIL

Základní údaje

Originální název

IMPACTS OF DRYING ON THE ABUNDANCE OF GAMMARUS FOSSARUM POPULATIONS IN SMALL STREAMS IN CENTRAL EUROPE

Autoři

DOSTÁLOVÁ, Alena (203 Česká republika, garant, domácí) a Petr PAŘIL (203 Česká republika, domácí)

Vydání

n Book of abstracts, SEFS 10 (July 2-7. 7. 2017), Olomouc, Czech Republic, p. 462, 2017

Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10600 1.6 Biological sciences

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Kód RIV

RIV/00216224:14310/17:00097153

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

intermittent streams; macroinvertebrates; gammarids

Příznaky

Mezinárodní význam

Změněno: 11. 1. 2019 21:03, Mgr. Alena Dostálová

Anotace

V originále

Climate change strongly affects the flow regime of small streams and causes, among other, more frequent and longer drying up. Changes in the population dynamic of aquatic invertebrates and the rate of their recovery after this disturbance indicate the duration of the dry-phase impact on populations of model organisms. The main aim of our study was to compare the fluctuation in abundance of Gammarus fossarum populations in relation to dry-phase using spring and autumn samples from 9 pairs of near-pristine streams (intermittent/permanent in each region) sampled in 2012- 2015 during BIODROUGHT project (www.biodrought.eu). We assessed the impact of drought duration (measured in days), the accessibility of refugia and other factors on the abundance of the model species in intermittent streams within year (before and after drying) and between years. Moreover, we investigated the rate of recolonization. Former research proved that intermittent streams are recolonized after dry period initially by bigger males, probably by upstream or downstream migration from permanent reaches. According to the abundance of autumn population and the time lag between the channel rewatering after the dry phase and the sampling date, and with knowledge of spring abundance, we estimated the rate of recolonization in relation to drought duration and extent in four subsequent seasons. The data comparison of intermittent and permanent streams from the same geographical regions can help quantify direct impact of drought that will probably strongly affect stream communities in Central Europe with increasing frequency.

Návaznosti

LTC17017, projekt VaV

Název: Validace bioindikačních metod jako nástrojů pro udržitelný management středoevropských vysychavých toků a přenos těchto metod do praxe (Akronym: InterStreaM)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Validace bioindikačních metod jako nástrojů pro udržitelný management středoevropských vysychavých toků a přenos těchto metod do praxe, INTER-COST

Citovat

DOSTÁLOVÁ, Alena a Petr PAŘIL. IMPACTS OF DRYING ON THE ABUNDANCE OF GAMMARUS FOSSARUM POPULATIONS IN SMALL STREAMS IN CENTRAL EUROPE. In n Book of abstracts, SEFS 10 (July 2-7. 7. 2017), Olomouc, Czech Republic, p. 462. 2017.

@proceedings{1385159,
   author = {Dostálová, Alena and Pařil, Petr},
   booktitle = {n Book of abstracts, SEFS 10 (July 2-7. 7. 2017), Olomouc, Czech Republic, p. 462},
   keywords = {intermittent streams; macroinvertebrates; gammarids},
   language = {eng},
   title = {IMPACTS OF DRYING ON THE ABUNDANCE OF GAMMARUS FOSSARUM POPULATIONS IN SMALL STREAMS IN CENTRAL EUROPE},
   year = {2017}
}

TY  - CONF
ID  - 1385159
AU  - Dostálová, Alena - Pařil, Petr
PY  - 2017
TI  - IMPACTS OF DRYING ON THE ABUNDANCE OF GAMMARUS FOSSARUM POPULATIONS IN SMALL STREAMS IN CENTRAL EUROPE
KW  - intermittent streams
KW  - macroinvertebrates
KW  - gammarids
N2  - Climate change strongly affects the flow regime of small streams and causes, among other, more frequent and longer drying up. Changes in the population dynamic of aquatic invertebrates and the rate of their recovery after this disturbance indicate the duration of the dry-phase impact on populations of model organisms. The main aim of our study was to compare the fluctuation in abundance of Gammarus fossarum populations in relation to dry-phase using spring and autumn samples from 9 pairs of near-pristine streams (intermittent/permanent in each region) sampled in 2012- 2015 during BIODROUGHT project (www.biodrought.eu). We assessed the impact of drought duration (measured in days), the accessibility of refugia and other factors on the abundance of the model species in intermittent streams within year (before and after drying) and between years. Moreover, we investigated the rate of recolonization. Former research proved that intermittent streams are recolonized after dry period initially by bigger males, probably by upstream or downstream migration from permanent reaches. According to the abundance of autumn population and the time lag between the channel rewatering after the dry phase and the sampling date, and with knowledge of spring abundance, we estimated the rate of recolonization in relation to drought duration and extent in four subsequent seasons. The data comparison of intermittent and permanent streams from the same geographical regions can help quantify direct impact of drought that will probably strongly affect stream communities in Central Europe with increasing frequency.
ER  -

DOSTÁLOVÁ, Alena a Petr PAŘIL. IMPACTS OF DRYING ON THE ABUNDANCE OF GAMMARUS FOSSARUM POPULATIONS IN SMALL STREAMS IN CENTRAL EUROPE. In \textit{n Book of abstracts, SEFS 10 (July 2-7. 7. 2017), Olomouc, Czech Republic, p. 462}. 2017.

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