PAŘIL, Petr, Catherine LEIGH, Marek POLÁŠEK, Romain SARREMEJANE, Pavla ŘEZNÍČKOVÁ, Alena DOSTÁLOVÁ a Rachel STUBBINGTON. Short-term streambed drying events alter amphipod population structure in a central European stream. Fundamental and Applied Limnology. Stuttgart, Germany: Verlagsbuchhandlung, 2019, roč. 193, č. 1, s. 51-64. ISSN 1863-9135. doi:10.1127/fal/2019/1164.
Další formáty:   BibTeX LaTeX RIS
Základní údaje
Originální název Short-term streambed drying events alter amphipod population structure in a central European stream
Autoři PAŘIL, Petr (203 Česká republika, garant, domácí), Catherine LEIGH (36 Austrálie), Marek POLÁŠEK (203 Česká republika, domácí), Romain SARREMEJANE (250 Francie), Pavla ŘEZNÍČKOVÁ (203 Česká republika, domácí), Alena DOSTÁLOVÁ (203 Česká republika, domácí) a Rachel STUBBINGTON (826 Velká Británie).
Vydání Fundamental and Applied Limnology, Stuttgart, Germany, Verlagsbuchhandlung, 2019, 1863-9135.
Další údaje
Originální jazyk angličtina
Typ výsledku Článek v odborném periodiku
Obor 10617 Marine biology, freshwater biology, limnology
Stát vydavatele Německo
Utajení není předmětem státního či obchodního tajemství
WWW Full Text
Impakt faktor Impact factor: 0.876
Kód RIV RIV/00216224:14310/19:00108985
Organizační jednotka Přírodovědecká fakulta
Doi http://dx.doi.org/10.1127/fal/2019/1164
UT WoS 000483100900004
Klíčová slova anglicky hyporheic zone; intermittent rivers and ephemeral streams; population dynamics; recolonization; refuge; refugium; reproductive diapause; river drying
Štítky rivok
Příznaky Mezinárodní význam, Recenzováno
Změnil Změnila: Mgr. Marie Šípková, DiS., učo 437722. Změněno: 12. 3. 2020 12:14.
Anotace
Temporary streams are becoming increasingly common, but ecological responses to streambed drying are poorly characterized in the temperate continental region of central Europe. In addition, global research has focused on community responses to drying, whereas effects on individual populations remain unknown. We explored the population structure of Gammarus fossarum (Crustacea: Amphipoda) in a central European temporary stream. Benthic gammarids were sampled on five dates during a flow recession, one date between two drying events (of 10 and 20 days, respectively), and five dates after flow resumed. Additional benthic samples were taken from isolated pools and dry sediments during drying events, and freeze cores were collected to compare the vertical distribution of amphipods during wet and dry phases. Gammarids were measured, adults distinguished from juveniles, adults sexed, and female reproductive state determined. Densities increased during flow recession, potentially reflecting both a decline in submerged habitat availability and seasonal increases in juvenile abundance. Persistence within dry benthic sediments was minimal, whereas pools and saturated subsurface sediments supported high population densities. Juveniles comprised 80 % of the subsurface population, suggesting that their ability to inhabit small interstices promotes persistence within the dry reach. Juveniles also comprised 92 % of pool inhabitants, despite their potential exposure to predation. Adults dominated after flow resumed, and population structure was altered post-drying by the loss of spring-recruited juveniles and reproductive females. Our results suggest that streambed drying may have longer-term effects than typically characterized by community-level studies. We recommend management actions that support populations of ecologically important species as they adapt to changing flow regimes.
Návaznosti
LTC17017, projekt VaVNázev: 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, INTER-EXCELLENCE, INTER-COST
VytisknoutZobrazeno: 5. 3. 2021 15:29