Abstract An algal bloom is a complex hydro-biological phenomenon driven by multi-attribute environmental processes and thus still difficult to predict. In this paper, comprehensive modelling framework for forecasting risks in shallow lakes presented, which based on long-term field observation of eutrophic lakes. the procedure, major factors their suitable ranges are investigated, individual inf...

Due to slow rates of molecular evolution, DNA sequences used to identify and build phylogenies of algal species involved in harmful algal blooms (HABs) are generally invariant at the intraspecific level. This means that it is unknown whether HAB events result from the growth of a single clone, a few dominant clones, or multiple clones. This is true despite the fact that several physiological an...

Three cases of Day/Night Band (DNB) observations of the Visible Infrared Imaging Radiometer Suite (VIIRS) onboard the Suomi National Polar-orbiting Partnership (SNPP) are explored for applications to assess the ocean environment and monitor ocean dynamics. An approach to use the ratio between the target radiance and the reference radiance was developed in order to better assess the ocean diurna...

Spatially localized blooms of toxic plankton species have negative effects on other organisms owing to the production toxins, mechanical damage, or means. A two-prey (toxic and nontoxic phytoplankton) one-predator (zooplankton) Lotka–Volterra system with diffusion has been presented understand mechanism underlying formation spatial plankton. In this study, we consider a one-dimensional (1D) in ...

Ba sed on biophysical ice-core data collected in the landfast ice off Barrow, Alaska, USA, in 2002 and 2003, a one-dimensional ice–ocean ecosystem model was developed to determine the factors controlling the bottom-ice algal community. The data and model results revealed a three-stage ice-algal bloom: (1) onset and early slow growth stage before mid-March, when growth is limited by light; (2) f...

Traditionally, harmful algal bloom studies have primarily focused on quantifying toxin levels contained within the phytoplankton cells of interest. In the case of paralytic shellfish poisoning toxins (PSTs), intracellular toxin levels and the effects of dietary consumption of toxic cells by planktivores have been well documented. However, little information is available regarding the levels of ...

The aim of this study is to investigate the population dynamics of harmful algal bloom by using the Joehnk’s model with some generalizations. The present mathematical model is a second-order nonlinear nonautonomous system based on delay differential equations. One variable is the biovolume of vegetative cells and the other one is the number of units of akinetes. The akinete is a thick-walled do...