Morphological, genetic, chemical and ecophysiological characterisation of two Microcystis aeruginosa isolates from the Vistula Lagoon, southern Baltic

Abstract

The motion of water due to surface waves is the most dynamic factor observed in the marine environment. In this review various aspects of the wave modelling of non-linear, steep surface waves and their role in the atmosphere-ocean interaction are discussed. Significant improvements in wave forecasting have been made in the last ten years. This is to a large extent related to substantial progress in the description of wind forcing and other processes, as well as to the more efficient use of satellite observations and assimilation methods. One striking observation is the increasing variety and complexity of models in which more physical processes are implemented, greater precision and resolution achieved and extended ranges of applicability demonstrated. However, in order to evaluate the applicability of particular models, comparison with high quality experimental data, collected in nature or under laboratory conditions, is necessary. Notation lista -wave amplitude, constant a 1 -functionThe complete text of the paper is available at http://www.iopan.gda.pl/oceanologia/

Feasibility study on production of a matrix reference material for cyanobacterial toxins

“…By weight, approximately 60 % of the RM was due to Microcystis spp., with Oscillatoria and Phormidium making up the remainder. Cell sizes of Microcystis are generally small (between 2 and 8 μm in diameter) [40], while Oscillatoria and Phormidium are filamentous and form large sheets of cells that can have a wide range of sizes and are often over 100 μm [41]. A bimodal distribution in the particle size analysis would not have been expected if using a single culture or strain of cyanobacteria.…”

Operational algae bloom detection in the Baltic Sea using GIS and AVHRR data

“…However, it is not unknown for harmful algae to flourish in shallow waters. For instance, cyanobacteria has been known to regularly bloom in the Curonian Lagoon (Alexandrov 2010; Paldaviciene et al 2010) while Microcystis aeruginosa has also been found in water samples from the Vistula Lagoon (Mazur-Marzec et al 2010). have shown that the general reflectance characteristics of harmful algae in visible and nearinfrared spectra are similar in both turbid and open waters.…”

A review of biological research in the Vistula Lagoon

“…circinalis, Anabaena crassa, Aphanizomenon sp., Microcystis botrys, Microcystis wesenbergii, and Nodularia spumigena, whose occurrence could pose a serious problem in the future, due to the specific environmental conditions in the Vistula Lagoon and global warming. Mazur-Marzec et al (2010) determined the morphological, chemical, genetic, and physiological characteristics of two Microcystis aeruginosa strains isolated in the Lagoon. The obtained results validated the suitability of selected morphological traits for estimating the potential toxicity of Microcystis aeruginosa blooms.…”