Detailed Information on Publication Record
2007
Distribution of benthic invertebrates in a small stream
STRAKA, Michal and Jan HELEŠICBasic information
Original name
Distribution of benthic invertebrates in a small stream
Name in Czech
Distribuce bentických bezobratlych v malém potoce
Authors
STRAKA, Michal (203 Czech Republic, guarantor, belonging to the institution) and Jan HELEŠIC (203 Czech Republic, belonging to the institution)
Edition
SEFS -5 Symposium for Europaen freshwater sciences - Programme and Abstracts, 2007
Other information
Language
English
Type of outcome
Konferenční abstrakt
Field of Study
10600 1.6 Biological sciences
Country of publisher
Italy
Confidentiality degree
není předmětem státního či obchodního tajemství
RIV identification code
RIV/00216224:14310/07:00022580
Organization unit
Faculty of Science
Keywords in English
aquatic macroinvertebrates; small stream; habitats
Tags
International impact
Změněno: 10/3/2011 11:07, doc. RNDr. Jan Helešic, Ph.D.
V originále
The distribution of benthic macroinvertebrates can be studied at different scales. At a mesohabitat scale the variation in a benthic community structure is influenced by four major processes: 1) physical factors, 2) patchy food supplies, 3) reproductive and age related effects, 4) biological interactions. Even in a small part of a stream we find habitats with different environmental conditions and therefore the distribution of organisms is not uniform but reflects the characteristics of the habitats. We studied spatial distribution of benthic macroinvertebrates within a 100m long reach of a Strahler's first order stream Hadůvka (Czech-Moravian Highlands, Czech Republic). Several mesohabitats were distinguished there: fine sediment, pure sandy bottom, sand covered with leaves, gravel bottom, gravel covered with leaves and cumulated woody debris - debris dams. From each mesohabitat all substratum was taken using Hess sampler (area 0.03 m2, 100mm mesh size) into the depth 5cm. In a laboratory organic and inorganic matter was separated using decantation and elutriation. Mineral substrate roughness and the amount of organic matter were evaluated. The importance of substrate characteristics to the macroinvertebrate community structure was evaluated using multivariate analysis and species preferences for particular substrate were assessed.
In Czech
Distribuce
Links
| MSM0021622416, plan (intention) |
|