A Short-Term Study of Vertical and Horizontal Distribution of Zooplankton During Thermal Stratification in Lake Kinneret, Israel

Pinel‐Alloul, Bernadette; Méthot, Ginette; Malinsky-Rushansky, Nehama

doi:10.1023/b:hydr.0000041611.71680.fc

Cited by 23 publications

(14 citation statements)

References 35 publications

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“…Despite high nutrient supplies, the water transparency period observed in summer (May to July 1998) seemed to be an important feature in the basin1 functionnig. While this behavioural pattern of prey-predator couples had been widely reported and modelled from lacustrine environments (Sommers et al, 1986;Sterner, 1988;Aleya, 1991;Pinell-Alloul et al, 2004), our study showed for the first time, to our knowledge this trend might occur in lagooning basins. The increase of phytoplankton biomass observed in winter 1999 (January 1999; 87.68 μgC.…”

Section: Biological Environmentsupporting

confidence: 75%

Spatio-temporal distribution and characterisation of phytoplankton populations coupled with abiotic and biotic changes in landfill leachate treatment basins (Etuffont, Belfort, France)

Khattabi

Aleya

Mania³

2006

Water Air Soil Pollut

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The quantitative distribution of dominant phytoplankton species was carried out in the stabilisation ponds of Etueffont landfill leachate (Belfort, France) from May 1998 to May 1999. The results showed maximum phytoplankton abundance in the last lagooning basin during summer 1998, that coincided with an increase in temperature and better leachate quality. In addition, the phytoplankton was dominated by Euglenophytes species Phacus sp. and Euglena sp. known to resist constraints induced by the highly polluted aquatic environments. An improve in water quality of the last basins translated into a shift in species composition with the substitution of the Bacillariophyceae (Stephanodiscus dubius) by the Chlorophyceae (Coelastrum sp.).

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Section: Biological Environmentsupporting

confidence: 75%

Spatio-temporal distribution and characterisation of phytoplankton populations coupled with abiotic and biotic changes in landfill leachate treatment basins (Etuffont, Belfort, France)

Khattabi

Aleya

Mania³

2006

Water Air Soil Pollut

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“…Many reviews and investigations emphasize this (e.g. Stich & Lampert, 1981;Primicerio & Klemetsen, 1999;Primicerio, 2000;Kehayias et al, 2004;Kessler & Lampert, 2004;Pinel-Alloul et al, 2004;Ka et al, 2006;Trifonova & Makartseva, 2006;Adamczuk, 2009;Doulka & Kehayias, 2011).…”

Section: Introductionmentioning

confidence: 99%

Vertical variability of pelagic zooplankton fauna in deep Latvian lakes, with some notes on changes in ecological conditions

Dimante-Deimantovica¹,

Skute²,

Skute³

2011

Estonian J. Ecol.

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Vertical structure of zooplankton communities from five deep Latvian lakes during the late summer and early autumn season was analysed. Changes in species composition, abundance, and dominant species assemblages were assessed in relation to temperature, oxygen, pH, chlorophyll a, oxidation reduction potential, and conductivity. Where possible, comparison with historical data was made.No significant changes of ecological conditions and annual dynamics of zooplankton diversity and abundance during the last 50 years were observed. However, a decrease of oxygen concentration occurred in deep lakes, caused probably by the pressure of human induced eutrophication. Also, slight differences were observed in the species composition, which most likely mark changes in the trophic status.A total of 24 to 38 Rotifera and Cladocera species were found during investigations from all lakes. The dominant species were Conochilus hippocrepis, Keratella cochlearis, Polyarthra vulgaris, Filinia longiseta, Kellicottia longispina, Daphnia (Daphnia) cucullata, Diaphanosoma brachyurum, Bosmina (Eubosmina) crassicornis, and B. (Eubosmina) longispina.Zooplankton communities can be defined as distinct groups both at species and higher levels on the basis of seasonal stratification in deep lakes.Temperature, oxidation reduction potential, and chlorophyll a concentration were found to be statistically the most influential environmental factors in the vertical distribution of zooplankton. Also sampling date and depth showed strong trends concerning zooplankton abundance and species composition. Vertical segregation between samples occurred within water layers of 0-10 m, 10-20 m, and below 20 m depth. The samples collected at the beginning of the sampling season assembled into a separate group.

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“…Distribution patterns of plankton are known to be patchy as a result of physical and biological processes (Pinel‐Alloul et al. , 1999; Pinel‐Alloul, Methot & Malinsky‐Rushansky, 2004). Heterogeneous distributions of zooplankton originate from various processes, some of which can be attributed to internal factors; that is, they are related to the activity and swimming behaviour of the animals (Folt & Burns, 1999).…”

Section: Introductionmentioning

confidence: 99%

How internal waves influence the vertical distribution of zooplankton

et al. 2006

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SUMMARY1. We present data with a high spatio-temporal resolution from a 72-h field survey in Bautzen Reservoir (Saxony, Germany). The aims of this survey were to observe hydrophysical processes during a period of unstable stratification in spring and investigate the effect of wind-induced internal waves on the vertical distribution of zooplankton. 2. Wind velocities up to 10 m s 1 caused a strong downwelling event of warm water at the sampling site and led to the generation of internal waves with an amplitude of 4 m. 3. The zooplankton community, which was dominated by Daphnia galeata, inhabited epilimnetic waters. Downwelling enlarged the thickness of the epilimnetic layer and, hence, led to high zooplankton abundances down to relatively deep water strata indicating lateral transport of zooplankton. As a consequence, area-specific zooplankton abundances increased considerably (max. fourfold) during downwelling. 4. We conclude that classical limnological field sampling, such as for monitoring purposes, can lead to severely biased estimates of zooplankton abundance due to the interfering effects of hydrophysical processes like internal waves. 5. Backscattering strengths measured by a simultaneously deployed Acoustic Doppler Current Profiler (600 kHz) were found to be correlated with estimated zooplankton abundances based on plankton samples.

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A Short-Term Study of Vertical and Horizontal Distribution of Zooplankton During Thermal Stratification in Lake Kinneret, Israel

Cited by 23 publications

References 35 publications

Spatio-temporal distribution and characterisation of phytoplankton populations coupled with abiotic and biotic changes in landfill leachate treatment basins (Etuffont, Belfort, France)

Spatio-temporal distribution and characterisation of phytoplankton populations coupled with abiotic and biotic changes in landfill leachate treatment basins (Etuffont, Belfort, France)

Vertical variability of pelagic zooplankton fauna in deep Latvian lakes, with some notes on changes in ecological conditions

How internal waves influence the vertical distribution of zooplankton

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