Zooplankton characteristics in monitoring of Lake Ladoga

Andronikova, Inna N.

doi:10.1007/bf00031824

Cited by 25 publications

(17 citation statements)

References 4 publications

(2 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was not easy to detect a significant relationship between the protozoan densities and some of physico-chemical factors in most of the examined sampling stations. However, the combined impact of various physical and chemical parameters against the numerical densities of total protozoa proved that water temperature, phosphates, ammonia and organic matter, in the present study, affect significantly to varying levels on both abundance and distribution of the protozoan organisms which is parallel to the findings of Laybourn (1976), Rogerson (1981), Andronikova (1996) and Marneffe et al (1996). Water temperature was proved to be the most influencing factor on protozoan densities at the examined sampling stations at both Rosetta (P = 0.007) and Damietta (P < 0.001) branches of the Nile.…”

Section: Field Studies On the Protozoan Distribution In Damietta And supporting

confidence: 87%

Field studies on the protozoan distribution in Damietta and Rosetta branches of the River Nile, Egypt

Galal

2018

Journal of Egyptian Academic Society for Environmental Developm

View full text Add to dashboard Cite

This study was carried out during a period extending between February 2016 and January 2017 in both Damietta and Rosetta branches of the Nile. Water samples were collected at eight sampling sites; four at Damietta and the others at Rosetta branch so as to detect the variability of the protozoan organisms and evaluate some physico-chemical parameters. It was proved that the protozoan genera of Rosetta branch showed more diverse as compared with those of Damietta one ( 46 and 35 genera respectively). These organisms were belonging to three main phyla ; Sarcodina, Mastigophora and Ciliophora where the latter predominated the preceding two phyla at the various sampling sites in both river branches. Simultaneously, organic matter, ammonia and nitrates exhibited higher levels in Rosetta than Damietta, while phosphates, dissolved oxygen and p H behaved in an antagonistic manner at the different seasons. The abundance of the sewage protozoan organisms was higher in Rosetta branch relative to those of Damietta which could be attributed mostly to the illegal runoff of the sewage wastes from certain villages on Rosetta branch that consequently affect oxygen and organic matter contents at these stations. These unicellular organisms were influenced and proved to be statistically significant to a certain limit with water temperature, phosphate salts, ammonia and organic matter.Field studies on the protozoan distribution in Damietta and Rosetta branches of the River Nile, Egypt Table (1a) Different protozoan genera at Damietta and Rosetta branches of the Nile. Rosetta branch at El-Menofeyia Province (46 genera) Damietta branch at Kalubeyia and Dakhleyia Provinces (35 genera) Sarcodina Amoeba sp. and Actinophora spp. Mastigophora Euglena, Phacus, Volvox, Gonium, Chlamydomonas and Ceratium spp.

show abstract

Section: Field Studies On the Protozoan Distribution In Damietta And supporting

confidence: 87%

Field studies on the protozoan distribution in Damietta and Rosetta branches of the River Nile, Egypt

Galal

2018

Journal of Egyptian Academic Society for Environmental Developm

View full text Add to dashboard Cite

show abstract

“…To assess zooplankton changes, based on the rotifer trophic state of lake index (TSI ROT ), the summer samples from epilimnion were analysed (Andronikova 1996; Ejsmont-Karabin 2012). The summer is the best time due to the stability of zooplankton communities, which are under the influence of trophic factors (Ejsmont-Karabin 2012).…”

Section: Methodsmentioning

confidence: 99%

“…The crustacean reacts slower and weaker to trophic changes (Ejsmont-Karabin and Karabin 2013). The indices of eutrophication process based on zooplankton abundance according to Andronikova (1996) as well as Haberman and Haldna (2014) were also determined (Table 1).…”

Section: Methodsmentioning

confidence: 99%

Zooplankton changes during bottom-up and top-down control due to sustainable restoration in a shallow urban lake

Rosińska

Romanowicz-Brzozowska

Kozák

et al. 2019

Environ Sci Pollut Res

View full text Add to dashboard Cite

Long-term cyanobacterial blooms and hypereutrophic state have been typical for the shallow, urban Swarzędzkie Lake for many years. Diversion of sewage did not change its trophic status, so restoration began in autumn 2011 using the sustainable approach based on three methods. The aim of the study was to analyse how sustainable restoration affects zooplankton. We hypothesised that bottom-up and top-down methods reconstructed zooplankton composition. Thus, the abundance of large-size cladocerans increased and controlled phytoplankton effectively. The elimination of cyanobacteria bloom, the decrease of rotifer abundance and the twofold increase of filter-feeder effectiveness were observed in summer 2012. However, high phosphorus concentration, lack of regular cyprinid removal and insufficient fish stocking together with high temperature prevented zooplankton from controlling cyanobacteria bloom in summer 2013. Rotifer domination with high trophy species was noted, as before restoration. The number of rotifers decreased in 2014, while crustaceans increased due to the significant decrease of nutrient concentrations and an intensification of biomanipulation treatments. Therefore, summer phytoplankton growth was low, without cyanobacteria dominance. The rebuilding of zooplankton in Swarzędzkie Lake was observed during sustainable restoration. However, the treatments should be intensified when adverse changes were observed to obtain better results for the improvement of water quality.

show abstract

“…In Eastern Europe, zooplankton have been routinely sampled since the 1950s, and in Estonia, for example, zooplankton have been monitored regularly since the 1960s in large Lake Peipsi and Lake Võrtsjärv. Zooplankton have traditionally also had a prominent position in lake status assessment in Russia (Andronikova, 1996), Hungary (Parpalȃ et al, 2003), Poland (Karabin, 1985;Radwan & Popiołek, 1989), and several other East European countries.…”

Section: Introductionmentioning

confidence: 99%

Zooplankton as indicators in lakes: a scientific-based plea for including zooplankton in the ecological quality assessment of lakes according to the European Water Framework Directive (WFD)

et al. 2011

View full text Add to dashboard Cite

With the implementation of the EU Water Framework Directive (WFD), the member states have to classify the ecological status of surface waters following standardised procedures. It was a matter of some surprise to lake ecologists that zooplankton were not included as a biological quality element (BQE) despite their being considered to be an important and integrated component of the pelagic food web. To the best of our knowledge, the decision of omitting zooplankton is not wise, and it has resulted in the withdrawal of zooplankton from many so-far-solid monitoring programmes. Using examples from particularly Danish, Estonian, and the UK lakes, we show that zooplankton (sampled from the water and the sediment) have a strong indicator value, which cannot be covered by sampling fish and phytoplankton without a very comprehensive and costly effort. When selecting the right metrics, zooplankton are cost-efficient indicators of the trophic state and ecological quality of lakes. Moreover, they are important indicators of the success/ failure of measures taken to bring the lakes to at least good ecological status. Therefore, we strongly recommend the EU to include zooplankton as a central BQE in the WFD assessments, and undertake similar regional calibration exercises to obtain relevant and robust metrics also for zooplankton as is being done at present in the cases of fish, phytoplankton, macrophytes and benthic invertebrates.

show abstract

Zooplankton characteristics in monitoring of Lake Ladoga

Cited by 25 publications

References 4 publications

Field studies on the protozoan distribution in Damietta and Rosetta branches of the River Nile, Egypt

Field studies on the protozoan distribution in Damietta and Rosetta branches of the River Nile, Egypt

Zooplankton changes during bottom-up and top-down control due to sustainable restoration in a shallow urban lake

Zooplankton as indicators in lakes: a scientific-based plea for including zooplankton in the ecological quality assessment of lakes according to the European Water Framework Directive (WFD)

Contact Info

Product

Resources

About