BRABCOVÁ, Blažena, Petr MARVAN, Libuše OPATŘILOVÁ, Karel BRABEC, Markéta FRÁNKOVÁ and Jiří HETEŠA. Diatoms in water quality assessment: to count or not to count them? Hydrobiologia. DORDRECHT: Springer, 2017, vol. 795, No 1, p. 113-127. ISSN 0018-8158. Available from: https://dx.doi.org/10.1007/s10750-017-3123-5.
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Basic information
Original name Diatoms in water quality assessment: to count or not to count them?
Authors BRABCOVÁ, Blažena (203 Czech Republic, guarantor, belonging to the institution), Petr MARVAN (203 Czech Republic), Libuše OPATŘILOVÁ (203 Czech Republic), Karel BRABEC (203 Czech Republic, belonging to the institution), Markéta FRÁNKOVÁ (203 Czech Republic) and Jiří HETEŠA (203 Czech Republic).
Edition Hydrobiologia, DORDRECHT, Springer, 2017, 0018-8158.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10617 Marine biology, freshwater biology, limnology
Country of publisher Netherlands
Confidentiality degree is not subject to a state or trade secret
WWW URL
Impact factor Impact factor: 2.165
RIV identification code RIV/00216224:14410/17:00096797
Organization unit Faculty of Education
Doi http://dx.doi.org/10.1007/s10750-017-3123-5
UT WoS 000401917000008
Keywords in English Diatoms; Phytobenthos; Quantification; Streams
Tags International impact, Reviewed
Changed by Changed by: Dana Nesnídalová, učo 831. Changed: 16/3/2018 15:59.
Abstract
Two methods of quantifying diatoms were compared: (i) by counting valves, and (ii) by simple assignment of individual species to a seven-point scale according to their coverage on a glass slide. The saprobity-trophic index introduced in the Czech Republic for assessing the ecological status of running waters in accordance with the requirements of the Water Framework Directive (WFD) was used for comparison. There were no statistically significant differences between the indices as calculated by the studied methods, and therefore the comparable indicative values of the two approaches were demonstrated. In all cases, however, indices based on coverage classes achieved higher correlation with the fundamental water chemistry parameters than did indices based on diatom valve counts. To explain the cause of higher correlations, different variants of editing input data were used. The results support the assumption that the main cause of the poorer predictive value for the index based on diatom valve counts is that the abundant taxa are attributed too much importance in the final assessment of the environment quality. Using degrees of coverage for the quantification of diatoms in evaluating the ecological status thus appears to be preferable (or at least sufficient) for the given purpose.
Links
LM2015051, research and development projectName: Centrum pro výzkum toxických látek v prostředí (Acronym: RECETOX RI)
Investor: Ministry of Education, Youth and Sports of the CR
LO1214, research and development projectName: Centrum pro výzkum toxických látek v prostředí (Acronym: RECETOX)
Investor: Ministry of Education, Youth and Sports of the CR
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