2022
Analysis of multiple-pressure pattern in rivers and its effects on the structure of macroinvertebrate communities
HROCH, Martin and Karel BRABECBasic information
Original name
Analysis of multiple-pressure pattern in rivers and its effects on the structure of macroinvertebrate communities
Authors
HROCH, Martin (203 Czech Republic, belonging to the institution) and Karel BRABEC (203 Czech Republic, guarantor, belonging to the institution)
Edition
Limnologica, Elsevier GmbH, 2022, 0075-9511
Other information
Language
English
Type of outcome
Article in a journal
Field of Study
10503 Water resources
Country of publisher
Germany
Confidentiality degree
is not subject to a state or trade secret
References:
Impact factor
Impact factor: 1.700
RIV identification code
RIV/00216224:14310/22:00127749
Organization unit
Faculty of Science
UT WoS
000876967600001
EID Scopus
2-s2.0-85163215339
Keywords in English
Macroinvertebrates; Community structure; Multiple stress; Scale
Tags
Tags
International impact, Reviewed
Changed: 11/7/2023 09:59, Mgr. Marie Novosadová Šípková, DiS.
Abstract
V originále
Natural and anthropogenic factors form stream macroinvertebrate communities depending on their combination, intensity, and spatial pattern. The study aimed to identify macroinvertebrate indicators that respond to land cover, hydromorphology, and wastewater releases individually and to their multiple-pressure pattern. Environmental and macroinvertebrate data from 36 sites were used in the study. Pressure parameters representing hierarchy of their complexity and spatial scale were included in analyses. Correlation analyses were used for evaluation of relationships among pressure characteristics and also pressure–macroinvertebrate relationships. The pressure-based and biological classification of sites was compared and indicator taxa were identified. The arable land in the sub-corridor extending 2–10 km upstream of an investigated site was the main pressure factor influencing the structure of macroinvertebrate communities in the studied streams. The biological effects of small-scale land cover were followed by catchment-scale land cover and hydromorphology. Almost no association of macroinvertebrates with the risk of point source pollution were detected. Classifications based on pressures and community composition corresponded only by the separation of most degraded sites from others. Among the macroinvertebrate indicators characterizing the severe impairment threshold, chironomids and oligochaetes dominated. Different responses of macroinvertebrates to hydromorphological degradation were observed under conditions of high small- and large-scale agricultural pressures (decrease in macroinvertebrate evenness and increase in oligochaete taxa richness, respectively). Linking biological indicators to pressure components and their combinations improves the efficiency of conservation and restoration strategies applied in fluvial ecosystems.
Links
SP/2E7/50/08, research and development project |
| ||
282656, interní kód MU |
| ||
7E12071, research and development project |
|