Factors affecting change in bioluminescence field intensity at night

Abstract

The change in bioluminescence field intensity at night in the western part of the Black Sea has been investigated. A difference in the dynamics of the bioluminescence field intensity in the upper (0-35 m) and deep (>35 m) layers has been shown. It is elucidated with multivariate statistical analysis that the biolu minescent species are in the space of influence of several factors, including both biotic and abiotic. Biotic fac tors are shown to exhibit the greatest effect on the periodicity of the bioluminescence field intensity increase and decrease at night. Abiotic factors are less significant in the bioluminescence circadian rhythms.

Regional variability of integral intensity of bioluminescence of hydrobionts in the waters of the Black Sea in the summer period under the influence of hydrophysical processes

“…Bioluminescence intensity of phytoplankton can be used for ecological monitoring of marine areas and to identify areas with high numbers and biomass of hydrobionts. [ 1–12 ] In the Black Sea, the hydrological conditions in the water column, as well as the nature of water circulation on the shelf and in deep‐water zones in the summer period are factors that have a significant effect on the development of phytoplankton and the spatial concentration of hydrobionts. [ 13–20 ]…”

“…As a result, main features of seasonal dynamics in the bioluminescence intensity of hydrobionts in certain regions have been determined, the integral influence of hydrophysical parameters on bioluminescence intensity has been estimated, and main planktonic luminous organisms in the Black Sea have been identified. [ 21–25 ] Despite the available publications on this topic, [ 1–10,21–26 ] regional features related to the vertical distribution of bioluminescence intensity of hydrobionts in the summer, taking into account the influence of water circulation, which contributes to formation of convergence and divergence zones along the coast of Crimea, have not been fully studied.…”

Evaluation of parameters of a plankton community's biological rhythms under the natural environment of the Black Sea using the Fourier transform method

“…Marine bioluminescence emitted by luminous plankton is one of these fields. High‐speed instrumentation capable of recording the bioluminescence intensity can be used to investigate migration, spatial and temporal distribution, and other characteristics of hydrobiont communities, including bioluminescent organisms …”