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ZEDKOVÁ, Blanka, Vanda RÁDKOVÁ, Jindřiška BOJKOVÁ, Tomáš SOLDÁN and Světlana ZAHRÁDKOVÁ. Mayflies (Ephemeroptera) as indicators of environmental changes in the past five decades: a case study from the Morava and Odra River Basins (Czech Republic). Aquatic Conservation: Marine and Freshwater Ecosystems. 2015, vol. 25, No 5, p. 622-638. ISSN 1052-7613. doi:10.1002/aqc.2529.
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Basic information
Original name Mayflies (Ephemeroptera) as indicators of environmental changes in the past five decades: a case study from the Morava and Odra River Basins (Czech Republic)
Authors ZEDKOVÁ, Blanka (203 Czech Republic, belonging to the institution), Vanda RÁDKOVÁ (203 Czech Republic, belonging to the institution), Jindřiška BOJKOVÁ (203 Czech Republic, guarantor, belonging to the institution), Tomáš SOLDÁN (203 Czech Republic) and Světlana ZAHRÁDKOVÁ (203 Czech Republic, belonging to the institution).
Edition Aquatic Conservation: Marine and Freshwater Ecosystems, 2015, 1052-7613.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10600 1.6 Biological sciences
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 2.415
RIV identification code RIV/00216224:14310/15:00087984
Organization unit Faculty of Science
Doi http://dx.doi.org/10.1002/aqc.2529
UT WoS 000365401900004
Keywords in English long-term trends; species turnover; species loss; biodiversity; species traits; water quality; multiple stressors; streams
Tags AKR, rivok
Tags International impact, Reviewed
Changed by Changed by: Mgr. Lucie Jarošová, DiS., učo 205746. Changed: 7/3/2018 13:19.
Abstract
1. Large-scale and intensive human activities have caused widespread and profound changes in the diversity and structure of biological communities. Historical or long-term data are an important tool for the quantification and understanding of temporal changes. A comparison of Ephemeroptera collected at 60 streams in the Morava and Odra river basins in two periods, 1955–1960 and 2006–2011, enabled an estimate of changes in their assemblages induced by various human pressures to be made. 2. The taxonomic composition of mayfly assemblages was substantially dissimilar between the two periods, although the changes were not associated with a decline in regional or local diversity. Only lowland rivers lost several of their original species, mostly habitat specialists. Species replacement, a leading driver of dissimilarity, caused shifts towards more simplified, less specialized assemblages in large rivers, and towards more pollutionand siltation-tolerant assemblages in small rivers. The increase in cold-water specialists and a stable share of generalists suggested the maintenance of a certain level of specialization in the assemblages of brooks. 3. The most marked change in the assemblage was associated with the impaired or bad water quality of rivers in the 1950s, which persisted or further deteriorated in the ensuing decades. Assemblages that were influenced by a slight deterioration or improvement in water quality were less altered, unless affected by other pressures (such as channel or discharge modifications). 4. The results indicate that the causes of changes in the assemblages are many and complex, although heavy pollution overrides other influences. Direct habitat loss or their degradation by siltation appear to be leading contributors to changes in assemblages. The results imply the need for the application of a catchment-scale perspective for the restoration of streams and the conservation of the remaining well-preserved stretches of lowland rivers.
Links
GPP505/10/P302, research and development projectName: Složení a struktura taxocenóz pošvatek (Plecoptera): změny diverzity, nároků a rozšíření jednotlivých druhů po 50 letech
Investor: Czech Science Foundation, Spatio-temporal patterns of Plecoptera taxocoenoses: changes in diversity, species requirements and distribution after 50 years
MUNI/A/0976/2009, interní kód MUName: Biodiverzita - analýzy biologických systémů různých úrovní a na různých škálách prostředí (Acronym: BIDA)
Investor: Masaryk University, Category A
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