Multiscale effect of hydromorphology and landuse on the structure of oligochaetes inhabiting small streams

PETŘIVALSKÁ, Karla, Karel BRABEC, Ondřej HÁJEK, Jana SCHENKOVÁ, Petr PAŘIL and František KUBÍČEK. Multiscale effect of hydromorphology and landuse on the structure of oligochaetes inhabiting small streams. In RIVER BOTTOM VI - Book of abstracts. 2005.

Basic information

Original name

Multiscale effect of hydromorphology and landuse on the structure of oligochaetes inhabiting small streams

Name in Czech

Kombinovaný vliv hydromorfologických podmínek a využití krajiny na strukturu společenstev máloštětinatých červů v malých tocích

Authors

PETŘIVALSKÁ, Karla (203 Czech Republic, guarantor), Karel BRABEC (203 Czech Republic), Ondřej HÁJEK (203 Czech Republic), Jana SCHENKOVÁ (203 Czech Republic), Petr PAŘIL (203 Czech Republic) and František KUBÍČEK (203 Czech Republic)

Edition

RIVER BOTTOM VI - Book of abstracts, 2005

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Other information

Language

English

Type of outcome

Konferenční abstrakt

Field of Study

10600 1.6 Biological sciences

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

RIV identification code

RIV/00216224:14310/05:00041310

Organization unit

Faculty of Science

Keywords in English

Oligochaeta; hydromorphology; land use; STAR

Tags

hydromorphology, land use, Oligochaeta, STAR

Tags

International impact

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Abstract

V originále

The stream habitats are formed by processes originating at various spatial scales. We analyzed the structure of oligochaete communities and its relationships to characteristics of catchment, floodplain, channel morphology and water chemistry. Substrate type is important component of habitat characteristics affecting oligochaetes distribution. The AQEM multihabitat sampling method was used for collecting macroinvertebrate samples at 24 sites representing gradient of organic pollution (14 sites) and morphological degradation (10 sites). All sites are small streams situated at altitude between 200 and 500 m a.s.l., with catchment area ranging from 10 to 50 square km. Biological material was collected during three periods - summer and autumn 2002 and spring 2003. Site characteristics were obtained partly from field investigation and partly from maps and GIS sources. The landuse, runoff types, geology and slope were evaluated at catchment scale. Landuse in the floodplain, riparian zone features and hydromorphological field survey (River Habitat Survey) represented factors recorded at the scale of river stretch. Taxonomic composition of aquatic oligochaetes and their functional role within macroinvertebrate communities were analyzed. The environmental parameters related to oligochaete community structure at studied sites were identified using multivariate statistics. The effect of season was evaluated.

In Czech

Habitaty v tocích jsou formovány procesy vycházejícími z různých prostorových škál. Analyzovali jsme strukturu společenstev máloštětinatců v různých tocích a jejich vztah k různým charakteristikám povodí, údolní nivy, morfologie koryta a chemie vody. Typ substrátu je důležitou složkou habitatu, který ovlivňuje distribuci máloštětinatců. Pro odběr vzorků bezobratlých na 24 lokalitách reprezentujících gradient organického znečištění (14 lokalit) a morfologické degradace (10 lokalit) byla použita multihabitatová vzorkovací metoda AQEM.