A simple model of phytoplankton-zooplankton interaction with a periodic input nutrient is presented. The model is then used to study a nutrient-plankton interaction with a toxic substance that inhibits the growth rate of plankton populations. The effects of the toxin upon the existence, magnitude, and stability of the periodic solutions are discussed. Numerical simulations are also provided to ...

Citation: Bergo NM, Signori CN, Amado AM, Brandini FP and Pellizari VH (2017) The Partitioning of Carbon Biomass among the Picoand Nano-plankton Community in the South Brazilian Bight during a Strong Summer Intrusion of South Atlantic Central Water. Front. Mar. Sci. 4:238. doi: 10.3389/fmars.2017.00238 The Partitioning of Carbon Biomass among the Picoand Nano-plankton Community in the South Bra...

Plankton is small organisms that live floating in the water column and are very important components aquatic ecosystems. The purpose of this study was to determine type plankton, ecological index relationship between the. Physico-chemical parameters waters on diversity plankton species using statistical analysis. This research conducted March-April 2021 Semujur Island, Pangkalan Baru District M...

Citation: Vernet M, Richardson TL, Metfies K, Nöthig E-M and Peeken I (2017) Models of Plankton Community Changes during a Warm Water Anomaly in Arctic Waters Show Altered Trophic Pathways with Minimal Changes in Carbon Export. Front. Mar. Sci. 4:160. doi: 10.3389/fmars.2017.00160 Models of Plankton Community Changes during a Warm Water Anomaly in Arctic Waters Show Altered Trophic Pathways wit...

Several marine and freshwater diatoms produce polyunsaturated aldehydes (PUA) in wound-activated processes. These metabolites are also released by intact diatom cells during algal blooms. Due to their activity in laboratory experiments, PUA are considered as potential mediators of diatom-bacteria interactions. Here, we tested the hypothesis that PUA mediate such processes in a close-to-field me...

A deterministic mechanism for the production of plankton patches within a typical medium scale oceanic structure is proposed and investigated. By direct numerical simulation of a simple model of Langmuir circulation we quantify the effects of unsteady flows on planktonic communities and demonstrate their importance. Two qualitatively different zones within the flow are identified: chaotic regio...

In this paper we propose a reaction-diffusion system with two distributed delays to stimulate the growth of plankton communities in the lakes/oceans in which the plankton feeds on a limiting nutrient supplied at a constant rate. The limiting nutrient is partially recycled after the death of the organisms and a distributed delay is used to model nutrient recycling. The second delay is involved i...

Current technologies available for the study of plankton remain limited in comparison to the spatial-temporal resolution and data acquisition rate available for physical oceanographic measurements. Specifically, plankton measurements are made primarily by use of net collections, as opposed to the high-speed digital output possible for physical sampling. Though net technology has become quite so...

Plankton patchiness in homogeneous physical environments is studied in this paper assuming that all involved populations disperse diffusively. A recent but powerful sufficient condition for the emergence of spatial patterns in models with any number of species is systematically applied to all food chain and food web plankton models and the result is rather sharp: all models explicitly containin...