2015
Mayflies (Ephemeroptera) as indicators of environmental changes in the past five decades: a case study from the Morava and Odra River Basins (Czech Republic)
ZEDKOVÁ, Blanka, Vanda RÁDKOVÁ, Jindřiška BOJKOVÁ, Tomáš SOLDÁN, Světlana ZAHRÁDKOVÁ et. al.Základní údaje
Originální název
Mayflies (Ephemeroptera) as indicators of environmental changes in the past five decades: a case study from the Morava and Odra River Basins (Czech Republic)
Autoři
ZEDKOVÁ, Blanka (203 Česká republika, domácí), Vanda RÁDKOVÁ (203 Česká republika, domácí), Jindřiška BOJKOVÁ (203 Česká republika, garant, domácí), Tomáš SOLDÁN (203 Česká republika) a Světlana ZAHRÁDKOVÁ (203 Česká republika, domácí)
Vydání
Aquatic Conservation: Marine and Freshwater Ecosystems, 2015, 1052-7613
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 2.415
Kód RIV
RIV/00216224:14310/15:00087984
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000365401900004
Klíčová slova anglicky
long-term trends; species turnover; species loss; biodiversity; species traits; water quality; multiple stressors; streams
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 7. 3. 2018 13:19, Mgr. Lucie Jarošová, DiS.
Anotace
V originále
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.
Návaznosti
GPP505/10/P302, projekt VaV |
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MUNI/A/0976/2009, interní kód MU |
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