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Temponeras, M.; Kristiansen, Jørgen; Moustaka‐Gouni, Maria

doi:10.1023/a:1003909229980

Cited by 53 publications

(7 citation statements)

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“…There were numerous studies about typical phytoplankton species associations with environmental conditions (Komárková and Hejzlar 1996;Temponeras et al 2000;Dokulil and Teubner 2000). Thirty-one functional groups including major abundant species in temperate lakes were separated by Reynolds et al (2002).…”

Section: Resultsmentioning

confidence: 99%

Seasonal Dynamics of Phytoplankton in Relation to Key Aquatic Habitat Factors in a Polluted Urban Small Water Body in Tianjin, China

Sun

Jin²,

Zhang

et al. 2009

Bull Environ Contam Toxicol

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To evaluate the seasonal dynamics of phytoplankton and its relationships with aquatic habitat factors in polluted urban landscape lakes, annual investigations have been carried out in the West zone of Xinkai Lake. The results showed that the lake belongs to the eutrophic-supertrophic type in terms of key habitat factors measurement. The seasonal succession of phytoplankton community was determined. The dominant cyanobacterial species Oscillatoria tenuis Ag. bloomed in autumn, although the other species with higher degrees of dominance never bloomed in the year investigated. Significant correlations between some habitat factors and phytoplankton biomass were observed.

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Section: Resultsmentioning

confidence: 99%

Seasonal Dynamics of Phytoplankton in Relation to Key Aquatic Habitat Factors in a Polluted Urban Small Water Body in Tianjin, China

Sun

Jin²,

Zhang

et al. 2009

Bull Environ Contam Toxicol

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“…The species has a wide distribution in freshwaters, mainly in those with moderate temperature and in the slightly eutrophicated ones [46] but our strain was isolated from Lake Doirani, an extremely eutrophic lake [49]. Species of the genus have been identified in freshwaters of Greece [21, 25, 27, 50].…”

Section: Discussionmentioning

confidence: 99%

“…The algal mat sample was collected after carefully scratching with a sterile scalpel the mat and placing the detached mat in sterile 50 mL polyethylene vessels. All sampling sites were chosen based on existing data on the occurrence of green algae [21, 29, 50, 67] or in situ observations. For a description of the lakes, see [22, 68, 69].…”

Section: Methodsmentioning

confidence: 99%

Polyphasic taxonomy of green algae strains isolated from Mediterranean freshwaters

Lortou

Gkelis

2019

J of Biol Res-Thessaloniki

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BackgroundTerrestrial, freshwater and marine green algae constitute the large and morphologically diverse phylum of Chlorophyta, which gave rise to the core chlorophytes. Chlorophyta are abundant and diverse in freshwater environments where sometimes they form nuisance blooms under eutrophication conditions. The phylogenetic relationships among core chlorophyte clades (Chlorodendrophyceae, Ulvophyceae, Trebouxiophyceae and Chlorophyceae), are of particular interest as it is a species-rich phylum with ecological importance worldwide, but are still poorly understood. In the Mediterranean ecoregion, data on molecular characterization of eukaryotic microalgae strains are limited and current knowledge is based on ecological studies of natural populations. In the present study we report the isolation and characterization of 11 green microalgae strains from Greece contributing more information for the taxonomy of Chlorophyta. The study combined morphological and molecular data.ResultsPhylogenetic analysis based on 18S rRNA, internal transcribed spacer (ITS) region and the large subunit of the ribulose-bisphosphate carboxylase (rbcL) gene revealed eight taxa. Eleven green algae strains were classified in four orders (Sphaeropleales, Chlorellales, Chlamydomonadales and Chaetophorales) and were represented by four genera; one strain was not assigned to any genus. Most strains (six) were classified to the genus Desmodesmus, two strains to genus Chlorella, one to genus Spongiosarcinopsis and one filamentous strain to genus Uronema. One strain is placed in a separate independent branch within the Chlamydomonadales and deserves further research.ConclusionsOur study reports, for the first time, the presence of Uronema in an aquatic environment up to 40 °C and reveals new diversity within the Chlamydomonadales. The results from the ITS region and the rbcL gene corroborated those obtained from 18S rRNA without providing further information or resolving the phylogenetic relationships within certain genera, due to the limited number of ITS and rbcL sequences available. The comparison of molecular and morphological data showed that they were congruent. Cosmopolitan genera with high worldwide distribution inhabit Greek freshwaters.

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“…Maximum lake level was 10.0 m in 1951-1987, decreased to 3.7 m in 2002 due to water abstraction and agricultural practices (Griffi ths et al, 2002), and recovered to 6.7 m in 2010 due to decreased water use and additional water transfer into the lake (Popovska and Bonacci, 2008;Stojov, 2012). Total phosphorus (TP) concentration was 15-130 μg/L in 1953-1960(Sotiria and Petkovski, 2004, and the lake was consistently eutrophic with the minimum TP value >50 μg/L since 1996 (Temponeras et al, 2000;Lokoska et al, 2006;Tasevska et al, 2010). Due to the infl uence of the typical Mediterranean climate (hot, dry summers and mild, humid winters) and the very simple plate-shaped morphometry of the lake basin, Lake Dojran's water warms up easily and does not stratify in summer, but it can freeze in winter.…”

Section: Site Descriptionmentioning

confidence: 99%

Sedimentary diatom and pigment-inferred recent anthropogenic accelerated eutrophication of a Mediterranean lake (Lake Dojran, Republic of North Macedonia / Greece)

Zhang

Reed

2020

J. Ocean. Limnol.

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Lake eutrophication is recognised as a serious global challenge, and many regional legislative programmes are being made to attempt to relieve nutrient pollution and restore deteriorated lake ecological state. However, it is of primary importance to understand the degradation processes and reference conditions. The palaeolimnological approach allows us to use ecological evidences preserved in lake sediments to track the changes of lake trophic status under human impact. Diatoms, a proxy for ecological and limnological change, and pigments, a proxy for algal production and composition, were analysed on a short sediment sequence from Lake Dojran (Republic of North Macedonia and Greece), and their preservation qualities were evaluated before environmental interpretation. Good diatom preservation is inferred mainly from the consistent co-occurrence of robust, highly-silicifi ed taxa and small taxa throughout the sequence. Pigment evaluation of the comparison between wet sediment samples in dark and cold storage and their corresponding dry sediment samples lyophilized immediately after the recovery reveals that sediment restoration conditions are critical for the accuracy of analysis. We show that the increased chlorophyll and xanthophyll pigment concentrations, particularly the siliceous-algae pigment fucoxanthin and diatoxanthin, together with the distinct increase in diatom concentration, indicate accelerated lake eutrophication and a major ecological shift linked to intensifi ed water abstraction practice and agricultural expansion in the late 18 th to early 19 th century. Evidence of diatom assemblage composition is muted probably by the dominance of widely-tolerant small fragilaroid species in diatom composition and the better competitive ability of cyanobacteria and chlorophytes than diatoms for low light under eutrophic and turbid conditions. This study improves our understanding of recent human-induced environmental change and current ecological restoration target in this lake.

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Cited by 53 publications

References 0 publications

Seasonal Dynamics of Phytoplankton in Relation to Key Aquatic Habitat Factors in a Polluted Urban Small Water Body in Tianjin, China

Seasonal Dynamics of Phytoplankton in Relation to Key Aquatic Habitat Factors in a Polluted Urban Small Water Body in Tianjin, China

Polyphasic taxonomy of green algae strains isolated from Mediterranean freshwaters

Sedimentary diatom and pigment-inferred recent anthropogenic accelerated eutrophication of a Mediterranean lake (Lake Dojran, Republic of North Macedonia / Greece)

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