OMESOVÁ, Marie and Jan HELEŠIC. Organic matter and fine grains as possible determinants of spatial and seasonal variability in bed sediment fauna: A case study from a Hercynian gravel stream. Limnologica - Ecology and Management of Inland Waters. Elsevier GmbH, 2010, vol. 40, No 4, p. 307-314. ISSN 0075-9511.
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Basic information
Original name Organic matter and fine grains as possible determinants of spatial and seasonal variability in bed sediment fauna: A case study from a Hercynian gravel stream
Authors OMESOVÁ, Marie (203 Czech Republic, guarantor, belonging to the institution) and Jan HELEŠIC (203 Czech Republic, belonging to the institution).
Edition Limnologica - Ecology and Management of Inland Waters, Elsevier GmbH, 2010, 0075-9511.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10600 1.6 Biological sciences
Country of publisher Germany
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 1.651
RIV identification code RIV/00216224:14310/10:00045592
Organization unit Faculty of Science
UT WoS 000289870200004
Keywords (in Czech) Hloubková distribuce; Zmrazovací sondy; Hyporheická zona;Bezobratlí; Říční dno
Keywords in English Depth distribution; Freeze-core; Hyporheic zone; Invertebrates; Streambed
Tags International impact, Reviewed
Changed by Changed by: doc. RNDr. Jan Helešic, Ph.D., učo 580. Changed: 10/3/2016 13:34.
Abstract
The spatial and seasonal distributions of organic matter and fine grains were tested as possible determinants of fauna distribution in bed sediment of a Hercynian gravel stream. The variability in invertebrate community composition was analysed using Detrended Correspondence Analysis with posterior projection of explanatory variables; Variation Partitioning was used to estimate the independent and shared effects of the explanatory variables. We found that the best predictors of the invertebrate community were spatial variables (depth, position in the channel) and then variables influenced by seasonal patterns (surface water temperature and discharge). The influence of organic matter and fine grain content was significant only after eliminating spatial autocorrelation. High amounts of organic matter, randomly accumulated in the sediment, improved the model by explaining high fauna densities. The fine grain content was not a limiting factor to fauna at our study site.
Links
MSM0021622416, plan (intention)Name: Diverzita biotických společenstev a populací: kauzální analýza variability v prostoru a čase
Investor: Ministry of Education, Youth and Sports of the CR, Diversity of Biotic Communities and Populations: Causal Analysis of variation in space and time
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