Zooplankton dynamics in the upstream part of Stratos reservoir (Greece)

Kehayias, George; Chalkia, Ekaterini; Chalkia, Stavroula; Nistikakis, George; Zacharias, Ierotheos; Zotos, Anastasios

doi:10.2478/s11756-008-0129-5

Cited by 20 publications

(10 citation statements)

References 33 publications

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“…In the periodically-flowing plesiopotamal type water bodies (GDU) with abundant resources, some species become dominant, and that is why diversity is also low. Annual diversity indices differed significantly; this could be caused by the different water regimes of different years (Illyová 2006;Kehayias et al 2008). …”

Section: Discussionmentioning

confidence: 99%

Diversity of planktonic rotifer assemblages in the water bodies of the Gemenc floodplain (Duna-Dráva National Park, Hungary)

Schöll

2009

Biologia

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Gemenc floodplain lies between river kilometres km 1503 and 1469 of the Danube River; it is a part of the Danube-Dráva National Park in Hungary. The floodplain is one of the largest in Europe with an 18,000 hectares (Natura 2000) area, and various characteristic side arms and backwaters which lie completely in the floodplain. The area needs hydrological revitalization because of the sinking of the river bed caused by the regulation of the main arm at the end of the 19 th century. For this revitalization an exhaustive knowledge of the hydrobiological relationships among the different water bodies is required. The aims of this study were to explore connections among the hydrological events, physico-chemical parameters of the water bodies and the diversity of the planktonic rotifer assemblages. From 2002 to 2004, 56 planktonic and 15 tychoplanktonic rotifer taxa were found in the area. The diversity of rotifer assemblages was generally higher in the parapotamal water bodies than in the main arm and in the plesio/paleo-potamal water bodies, which could be explained by the intermediate disturbance hypothesis. The diversity, dominance, and evenness of the assemblages were correlated with water flow and water temperature. The most important factors influencing the diversity patterns were the occurrence of flow (retention time) as a disturbance, connectivity with the main arm, and habitat diversity of the given water body. Most of these factors are determined by the water level fluctuation of the main arm.

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Section: Discussionmentioning

confidence: 99%

Diversity of planktonic rotifer assemblages in the water bodies of the Gemenc floodplain (Duna-Dráva National Park, Hungary)

Schöll

2009

Biologia

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“…Moreover, the strong influence of temperature on rotifer species has been demonstrated by others (Hoffmann 1977;Akbulut et al 2008). Additionally, temperature seemed to be the most important abiotic factor controlling the seasonal variation of Dreissena polymorpha larvae, since its positive correlation with temperature has been found in other Mediterranean lakes (Michaloudi et al 1997;Kehayias et al 2008;Doulka & Kehayias 2008), as well as in lakes of the northern Europe (Stańczykowska & Lewandowski 1993).…”

Section: Discussionmentioning

confidence: 99%

Zooplankton dynamics in a gypsum karst lake and interrelation with the abiotic environment

et al. 2012

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Zooplankton species composition and abundance variation was studied in Lake Amvrakia, which is a deep, temperate, gypsum karst lake situated in the western Greece. The two year survey of zooplankton revealed 33 species (23 rotifers, five cladocerans, four copepods and one mollusc larva). The mean integrated abundance of the total zooplankton ranged between 83.6 and 442.7 ind. L −1 , with the higher density to be recorded in the surface 0-20 m layer. Small numbers of specimens of almost all species were found also in the hypoxic or anoxic hypolimnion. Copepods and especially the calanoid Eudiaptomus drieschi dominated the zooplankton community throughout the sampling period, followed by Dreissena polymorpha larvae, rotifers and cladocerans. Seasonal succession among the cladocerans and the most abundant rotifer species was observed. The concentration of chlorophyll-a was the most important factor for the variation of total zooplankton, as well as for the rotifers' community. Dissolved oxygen affected copepods and cladocerans, water level correlated mainly with the molluscs larvae of D. polymorpha, while temperature influenced the variation of several rotifers, the cladoceran Diaphanosoma orghidani and the mollusc larvae. Negative correlation of conductivity with the cladoceran Daphnia cucullata and the copepods E. drieschi and Macrocyclops albidus was found. The differences in species composition found in Lake Amvrakia in comparison to the nearby lakes are probably ought to the geographical isolation and perhaps to its particular chemistry (e.g., elevated conductivity).

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“…P. truncatum is reported as thermophilic specimen (Koste 1978), and its embryonic development occurs at high temperatures, and this period continues for a long time (Edmondson 1960). P. truncatum was reported from various areas in the world including; Russia (Telesh 1995), Canada (Swadling et al 2000), China (Lin et al 2003;Zhaou et al 2009 Kehayias et al 2008), and North America (Barbiero and Warren 2011), except Turkey which is located in Palearctic region. Also, it has been a subject of several studies (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…P. truncatum reached to high numbers in warm month (May 2010), when the water temperature was between 12.04-14.54 °C in Lake Sapanca (Table 2 and Table 3). Many authors were reported that the abundance of P. truncatum positively correlated with water temperature (Swadling et al 2000;Doulka and Kehayias 2008;Kehayias et al 2008).…”

Section: Phylummentioning

confidence: 99%