J 2001

Nonparametric evaluation of environmental parameters determining the occurrence of stonefly larvae (Plecoptera) in streams

HELEŠIC, Jan

Základní údaje

Originální název

Nonparametric evaluation of environmental parameters determining the occurrence of stonefly larvae (Plecoptera) in streams

Autoři

HELEŠIC, Jan

Vydání

Aquatic Science, Basel, Switzerland, Birkhäuser Publ.Ltd. 2001, 1015-1621

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10600 1.6 Biological sciences

Stát vydavatele

Švýcarsko

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 0.696

Kód RIV

RIV/00216224:14310/01:00004715

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000173188800009

Klíčová slova anglicky

environmental parameters; ecological niche; bioindication; Plecoptera; running waters
Změněno: 22. 11. 2001 12:05, doc. RNDr. Jan Helešic, Ph.D.

Anotace

V originále

This study explored the relationship between the occurrence of stonefly species, stream type and basic environmental conditions. Only 13 taxa, out of 115 species occurring in catchments investigated in the Czech Republic (Soldán, Zahrádková, Helešic, Dušek & Landa 1998), were selected for this study. The environmental parameters chosen were those that characterized the hydraulic and physical environments of almost all the streams: slope, current velocity, discharge regime, bottom roughness, current type (Reynolds number and Froude number). Organic water pollution, characterized as BOD5 and saprobity, was intentionally not embodied in the evaluation, because the chosen sampling sites were in streams which proved to have minimal or almost no organic pollution. The relationships between the occurrence of stoneflies and the stream types (as set out by Illies & Botosaneanu 1963) were evaluated on the basis of chi-square tests. For two species (Nemurella pictetii - crenal and Perla burmeisteriana - epipotamal) there was strong evidence of affinity to the stream type. The following parameters were shown to have a statistically significant influence on stonefly communities: slope, substrate roughness, current velocity and current type (Reynolds number and Froude number). For the most abundant individual species, Perla burmeisteriana, Isoperla grammatica, Leuctra albida, Leuctra nigra and Isoperla sudetica the influence of the investigated factors on occurrence and species abundance was assessed.

Návaznosti

GA206/99/1522, projekt VaV
Název: Vliv hydrologických podmínek toku na biotu dna a hyporhealu
Investor: Grantová agentura ČR, Vliv hydrologických podmínek toku na biotu dna a hyporhealu