Biochemical Composition and Energy Content in the Zooplankton of the Kara Sea

Multi-Element Composition of Diatom Chaetoceros spp. from Natural Phytoplankton Assemblages of the Russian Arctic Seas

“…Interacting directly with the dissolved forms of chemical elements through adsorption, desorption, Biology 2021, 10, 1009 2 of 19 and biological absorption, phytoplankton effectively extract these substances from the environment, involving them in biogenic cycles [5,6]. The assimilation of elements by phytoplankton radically changes their geochemical pathways in the ocean, providing a multiple increase in the residence time in the water column and promoting their transfer to higher trophic levels [7][8][9]. The coordination of biological and geochemical processes is a result of the biogeochemical evolution of ecosystems over millions of years [3,10,11].…”

“…The coordination of biological and geochemical processes is a result of the biogeochemical evolution of ecosystems over millions of years [3,10,11]. On the one hand, the dynamics of the contents of chemical elements in the euphotic zone of the ocean is closely related to large-scale biological cycles of primary producers [4,9,12]. On the other hand, some of the major and trace elements are important co-factors of biochemical and physiological processes in the algae cell [11,13].…”

“…First of all, this is due to the technical difficulties in collecting and obtaining pure samples of natural phytoplankton communities containing a minimum amount of mineral admixtures [17,18]. However, according to recent studies, analyzing the multi-element composition of phytoplankton is important both for assessing the dynamics and fluctuations of marine ecosystems in changing climatic conditions [3,9,11,19,20] and for the development of theoretical foundations of the safety of using microalgae as potential natural sources of functional food [21][22][23][24].…”