Spatial and temporal distribution of zooplankton in Lake Trichonis (Greece)

Doulka, Evangelia; Kehayias, George

doi:10.1080/00222930701835555

Cited by 22 publications

(54 citation statements)

References 27 publications

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“…The results for the seasonal variation of the most important rotifer species are generally in accordance with previous studies from different areas: Doulka & Kehayias (2008) in Lake Trichonis, Michaloudi et al (1997) in Lake Mikri Prespa, Ferrara et al (2002) and Halvorsen et al (2004) in European lakes. Specific temperature and food preferences result in a characteristic seasonal succession of the various rotifer species (Lair 1990), which might appeared in different order from year to year as it has been noticed in other areas (García et al 2002).…”

Section: Discussionsupporting

confidence: 79%

“…The succession of D. cucullata and D. orghidani is similar to the pattern reported from other lakes (Michaloudi et al 1997;Doulka & Kehayias 2008) and could be ought to competitive interactions between these species (Matveev 1987). On the other hand, the succession of B. longirostris and D. orghidani could be owed to their different food preferences.…”

Section: Discussionsupporting

confidence: 63%

“…Their peak of abundance coincided with the lowest values of E. drieschi suggesting perhaps competitive interactions. E. drieschi was also the dominant crustacean in the nearby Trichonis Lake, while there were great similarities in its seasonal variation between the two lakes (Doulka & Kehayias 2008). Also, the year-round presence of nauplii and egg-bearing females of this species probably suggests that either it has multiple reproductive periods, or a continuous reproduction.…”

Section: Discussionmentioning

confidence: 93%

“…Considering its faunistic composition, Lake Amvrakia showed certain differences with nearby lakes, such as Trichonis Lake (Doulka & Kehayias 2008) and Stratos Reservoir . Indeed, the rotifers Keratella tecta (Gosse, 1851), K. tropica (Apstein, 1907), Lecane luna (Müller, 1776) and Notholca squamula (Müller, 1786) and the copepod Th.…”

Section: Discussionmentioning

confidence: 99%

“…The zooplankton specimens were examined microscopically and were identified to the lowest taxonomic level possible. For the abundance analysis, three counts of 1.5 ml subsamples were made on a Sedwick-Rafter cell from each sample having a total volume of 100 ml (Doulka & Kehayias 2008).…”

Section: Methodsmentioning

confidence: 99%

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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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