<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The purpose of this work is the designation of changes in the environmental preferences of mayflies in the prevailing conditions in a large lowland river little changed by human activity. During the study, the occurrence of the following species were recorded: <italic>Cercobrachys minutus</italic> (54.2%); <italic>Procloeon nana</italic> (24.5%); <italic>Pseudocentroptiloides shadini</italic> (7.6%); <italic>Ametropus fragilis</italic> (2.9%), which were numerously represented and formed a permanent element of the fauna, and <italic>Baetopus wartensis</italic> (0.1%) and <italic>Oligoneurisca borysthenica</italic> which were noted very rarely and were accidental species. The differences and similarities in the functionality of the psammophilous and other mayfly assemblages were assessed. The data from the last fifteen years of study was investigated and compared with those from other rivers which were more managed. PCA was used to distinguish the main factors influencing habitat selection at particular stages of life history and the tendency for drifting.</p>
</abstract>

The purpose of this work is the designation of changes in the environmental preferences of mayflies in the prevailing conditions in a large lowland river little changed by human activity. During the study, the occurrence of the following species were recorded: Cercobrachys minutus (54.2%); Procloeon nana (24.5%); Pseudocentroptiloides shadini (7.6%); Ametropus fragilis (2.9%), which were numerously represented and formed a permanent element of the fauna, and Baetopus wartensis (0.1%) and Oligoneurisca borysthenica which were noted very rarely and were accidental species. The differences and similarities in the functionality of the psammophilous and other mayfly assemblages were assessed. The data from the last fifteen years of study was investigated and compared with those from other rivers which were more managed. PCA was used to distinguish the main factors influencing habitat selection at particular stages of life history and the tendency for drifting.

The influence of river functionality on habitat selection by Ephemeroptera in spatially and temporally diverse lowland rivers, with particular reference to the River Bug

Oceanological and Hydrobiological Studies

The purpose of this work is the designation of changes in the environmental preferences of mayflies in the prevailing conditions in a large lowland river...

The influence of river functionality on habitat selection by Ephemeroptera in spatially and temporally diverse lowland rivers, with particular reference to the River Bug

Pubblicato online: 26 giu 2009

Pagine: 63 - 76

DOI: https://doi.org/10.2478/v10009-009-0022-8

Parole chiave
psammophilous mayflies, lowland river, sandy substratum

This content is open access.

The influence of river functionality on habitat selection by Ephemeroptera in spatially and temporally diverse lowland rivers, with particular reference to the River Bug

Pubblicato online: 26 giu 2009

Pagine: 63 - 76

DOI: https://doi.org/10.2478/v10009-009-0022-8

Parole chiavepsammophilous mayflies, lowland river, sandy substratum

This content is open access.

Parole chiave
psammophilous mayflies, lowland river, sandy substratum