Phytoplankton in three freshwater lakes in the Neretva River delta (Eastern Adriatic, NE Mediterranean)

Jasprica, Nenad; Hafner, Dubravka; Batistić, Mirna; Kapetanović, Tatjana

doi:10.1127/0029-5035/2005/0081-0037

Cited by 16 publications

(20 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…To understand toxin variations and allelopathy in natural blooms, most early investigations were focused on toxic cyanobacterial species in the laboratory. However, other nontoxic species of Microcystis, for example M. wesenbergii (Xu et al 2008), which also plays an important role in cyanobacterial blooms succession, has received less attention despite being distributed widely around the world including Asia (Son et al 2005), Europe (Jasprica et al 2005), America (Oberholster et al 2006), and Oceania (Wood et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Competition between toxic Microcystis aeruginosa and nontoxic Microcystis wesenbergii with Anabaena PCC7120

2011

J Appl Phycol

View full text Add to dashboard Cite

To elucidate the changes in the proportions of microcystin (MC)-producing Microcystis, non-MCproducing Microcystis and Anabaena strains during cyanobacteria blooms, we compared their fitness under different initial biomass ratios. Culture experiments were carried out with three cyanobacterial strains: single-celled toxic Microcystis aeruginosa PCC7806 (Ma7806), singlecelled nontoxic Microcystis wesenbergii FACHB-929 (Mw929) and filamentous Anabaena PCC7120 (An7120). Growth curves expressed as biovolume, Ma7806 microcystin-LR (MC-LR) content (detected with HPLC and ELISA), and the culture medium dissolved total nitrogen and dissolved total phosphorous (DTP) were measured to monitor nutrient uptake. Results suggest that the dominant strain in competition experiments between Ma7806 and An7120 was mainly controlled by the initial biomass ratio of the two strains, but there was also evidence for allelopathic interactions, where MC-LR produced by Ma7806 played an important role in the competition process. However, Mw929 was always less competitive when co-cultured with An7120 regardless of initial biomass ratio. Culture medium DTP showed significant differences between competition experiments in all sets, suggesting that Mw929 could be more suited to low phosphorus environments than Ma7806 and An7120. Overall, the competitive ability of Ma7806 was stronger than Mw929 when co-cultured with An7120 in the case of excess nutrients and the results could well unravel the seasonal succession process of cyanobacteria blooms.

show abstract

Section: Introductionmentioning

confidence: 99%

Competition between toxic Microcystis aeruginosa and nontoxic Microcystis wesenbergii with Anabaena PCC7120

2011

J Appl Phycol

View full text Add to dashboard Cite

show abstract

“…M. aeruginosa and M. viridis have been proved to be definite microcystin producers based on results from both blooms and strains (Sivonen and Jones, 1999;Watanabe et al, 1988). M. wesenbergii, first accounted by Komárek in 1958 at high resolution for the distinct margins of colonies which can be distinguished from other Microcystis species (Komárek and Ettl, 1958), has a wide range of distribution all over the world, including Asia (Son et al, 2005), Europe (Jasprica et al, 2005), America (Oberholster et al, 2006) and Oceania (Wood et al, 2005). In terms of microcystin production, Watanabe (1996) indicated that M. wesenbergii has been generally considered as nontoxic, but Otsuka et al (1999) concluded that most morphotypes of Microcystis include both toxic and nontoxic strains.…”

Section: Introductionmentioning

confidence: 99%

Non-microcystin producing Microcystis wesenbergii (Komárek) Komárek (Cyanobacteria) representing a main waterbloom-forming species in Chinese waters

et al. 2008

Environmental Pollution

View full text Add to dashboard Cite

“…1) (Hafner, 2003). A 2-year study of these lakes has elucidated differences in the structure and dynamics of their phytoplankton communities (Jasprica, Hafner, Batistic´, & Kapetanovic´, 2005). The dominant algal genera in the some lakes are cyanophytes, Microcystis and Aphanozomenon, which are more typical of eutrophic systems (cf.…”

Section: Introductionmentioning

confidence: 99%

Taxonomic composition and seasonality of diatoms in three Dinaric karstic lakes in Croatia

Jasprica

Hafner

2005

Limnologica

Self Cite

View full text Add to dashboard Cite

The composition and temporal distribution of planktonic diatoms were studied in three small shallow karstic lakesModro Oko, Desne, and Kuti -throughout the seasons in 1994, 1995, 1997, and 1998. Physico-chemical parameters did not differ among the three lakes, except for NO 3 concentrations. Altogether, 137 diatom taxa within 41 genera were found in all three lakes combined. The highest number of taxa belonged to the genera Surirella (13), Navicula (12), and Cymbella (9). Most taxa were tychoplanktonic, with true panktonic taxa contributing only 14% of the total. Despite their physical-chemical similarity, the lakes showed differences in the structure and dynamics of their diatom communities. Blooms occurred at different times in each of the lakes, and community similarity (Jaccard index) among all three was low (17.6-29.1%). The highest mean values of surface diatom abundance in Modro Oko (2199 cells L À1 ), Desne (7900 cells L À1 ), and Kuti (20690 cells L À1 ) were not significantly different. Margalef's species richness index did not differ either among the lakes or seasonally. Only five diatom taxa in quantitative samples, and 22 taxa in netsamples, were common to all lakes. The most frequent diatoms were Cyclotella striata (56-93%), Fragilaria ulna (50-67%), and Asterionella formosa (27-83%). The most abundant taxa in Modro Oko, Desne, and Kuti were, respectively, Cymbella sp. 1 (402 cells L À1 ), Cyclotella striata (3000 cells L À1 ) and Asterionella formosa (20690 cells L À1 ). Eighteen taxa were recorded for the first time in Croatia:

show abstract

Phytoplankton in three freshwater lakes in the Neretva River delta (Eastern Adriatic, NE Mediterranean)

Cited by 16 publications

References 0 publications

Competition between toxic Microcystis aeruginosa and nontoxic Microcystis wesenbergii with Anabaena PCC7120

Competition between toxic Microcystis aeruginosa and nontoxic Microcystis wesenbergii with Anabaena PCC7120

Non-microcystin producing Microcystis wesenbergii (Komárek) Komárek (Cyanobacteria) representing a main waterbloom-forming species in Chinese waters

Taxonomic composition and seasonality of diatoms in three Dinaric karstic lakes in Croatia

Contact Info

Product

Resources

About