Phytoplankton of the White Sea

Ilyash, L. V.; Белевич, Т. А.; Житина, Л. С.; Radchenko, I. G.; Ratkova, Tatjana

doi:10.1007/698_2018_320

Cited by 12 publications

(13 citation statements)

References 35 publications

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“…We expected Cribrilina annulata to show a similar pattern, and, indeed, active feeding and growth along with larval production lasted from the late spring to mid-summer when phytoplankton levels are highest in the Chupa Inlet (Khlebovitch, 1974; Iliash et al ., 2003). In August, however, when phytoplankton is still plentiful, reproduction ceased (on kelps) or decreased to a minimum (on red algae), whereas the proportion of feeding zooids increased (see above).…”

Section: Discussionmentioning

confidence: 99%

Colonies as dynamic systems: reconstructing the life history of Cribrilina annulata (Bryozoa) on two algal substrates

et al. 2019

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Quantifying interconnected performances of the modules in a colonial organism (feeding, sexual reproduction, rejuvenation, dormancy) into an integral picture enables studying functional dynamics and resource allocation at different levels – from module to population. Testing this approach on the common boreal-Arctic bryozoan Cribrilina annulata in the White Sea, we describe its life history, comparing colonies on two algal substrates with contrasting size and lifespan. Colonies living on kelps were much larger and had a higher proportion of dormant zooids, whereas the percentage of reproducing, feeding and rejuvenating zooids was higher in colonies on red algae (with the colonies also exhibiting longer reproductive period). Colony lifespan was dependent both on substrate type and on time of colony establishment, lasting from 4–5 to up to 17 months on kelps and 14–18 months on red algae. During the reproductive season (May–September) the C. annulata population consisted of colonies of three cohorts on both substrata: overwintered and two summer generations that behaved differently. Whereas overwintered and summer colonies established in June–early August produced larvae, most of the colonies established after mid-summer were preparing for hibernation and postponed reproduction until next spring. Moreover, young reproducing colonies formed brooding hermaphrodite zooids of ordinary size, whereas overwintered colonies budded smaller-sized basal and frontal (dwarf) hermaphrodites. Finally, overall zooidal performance in co-existing colonies of the overwintered and young generations was different on kelps, but similar on red algae. Altogether our findings indicate that the life histories of colonial epibionts are much more complex and evolutionarily flexible than generally acknowledged.

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Section: Discussionmentioning

confidence: 99%

Colonies as dynamic systems: reconstructing the life history of Cribrilina annulata (Bryozoa) on two algal substrates

et al. 2019

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“…M. polaris is widespread and dominant in the under-ice and open Arctic waters [11,17,43,68,69] and regarded as arctic endemic [11,19]. Previously, we detected M. polaris (as Micromonas E2) in the ice of the White Sea [24]. Its presence in the under-ice water and summer plankton of the subarctic White Sea and the Gulf of Finland of the subarctic Baltic Sea [43] once again indicates that the area of distribution of this species is wider than previously thought [11].…”

Section: Discussionmentioning

confidence: 91%

Photosynthetic Picoeukaryotes Diversity in the Underlying Ice Waters of the White Sea, Russia

et al. 2020

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The White Sea is a unique basin combining features of temperate and arctic seas. The current state of its biocenoses can serve as a reference point in assessing the expected desalination of the ocean as a result of climate change. A metagenomic study of under-ice ice photosynthetic picoeukaryotes (PPEs) was undertaken by Illumina high-throughput sequencing of the 18S rDNA V4 region from probes collected in March 2013 and 2014. The PPE biomass in samples was 0.03–0.17 µg C·L−1 and their abundance varied from 10 cells·mL−1 to 140 cells·mL−1. There were representatives of 16 algae genera from seven classes and three supergroups, but Chlorophyta, especially Mamiellophyceae, dominated. The most represented genera were Micromonas and Mantoniella. For the first time, the predominance of Mantoniella (in four samples) and Bolidophyceae (in one sample) was observed in under-ice water. It can be assumed that a change in environmental conditions will lead to a considerable change in the structure of arctic PPE communities.

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“…It is known that the hydrological conditions of Kandalaksha Bay contribute to intensive development of plankton. The biomass produced by planktonic bacteria in July-September is characterized by a maximal value [16]. Therefore, this bay is defined by considerable diversity and high levels of productivity of bacteria and phytoplankton, which are valuable food objects for herring and provides high levels of storage lipids.…”

Section: Total Lipids and Their Classesmentioning

confidence: 99%

“…It is known that MUFA are food borne and they are biomarkers for specific groups of aquatic organisms: 18:1(n-9) FA-the main biomarker of dinophytes (Dinophyta division, Dinophyceae class) and bacterial plankton; and 16:1(n-7) FA-diatom (Ochrophyta division, Bacillariophyceae class) microalgae [30][31][32]. Dinophytes and diatom microalgae are major contributors to the White Sea phytoplankton biomass [16]. The levels of production of phytoplankton vary considerably in different habitats of the White Sea; they also change depending on seasons and years.…”

Section: Fatty Acidsmentioning

confidence: 99%

Lipids and Fatty Acids of the White Sea Herring Clupea pallasi marisalbi Berg (Clupeiformes, Clupeidae) from Different Habitats of the White Sea

Мурзина

Нефедова

Пеккоева

et al. 2016

Fishes

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Habitation conditions significantly affect the physiological and biochemical state of aquatic organisms, including the balance of lipids that performs important functions in cellular metabolism. The lipid and fatty acid profiles of White Sea herring in Dvina, Kandalaksha, and Onega bays, and in the waters of Tersky Shore (the mouth of the Varzuga River) in autumn (after the fattening period) were studied. Different methods-thin-layer, high-performance liquid and gas chromatography-were used for this purpose. Determined heterogeneity on studied parameters of lipid metabolism of fish from different habitats is associated with differences in trophic and hydrological conditions in these bays. Variations of lipid compositions of herring groups can be a reflection of qualitative and quantitative strategies of biochemical adaptations, aimed at compensating the lipid metabolism of fish under different trophic-ecological conditions of habitation in the White Sea.

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Phytoplankton of the White Sea

Cited by 12 publications

References 35 publications

Colonies as dynamic systems: reconstructing the life history of Cribrilina annulata (Bryozoa) on two algal substrates

Colonies as dynamic systems: reconstructing the life history of Cribrilina annulata (Bryozoa) on two algal substrates

Photosynthetic Picoeukaryotes Diversity in the Underlying Ice Waters of the White Sea, Russia

Lipids and Fatty Acids of the White Sea Herring Clupea pallasi marisalbi Berg (Clupeiformes, Clupeidae) from Different Habitats of the White Sea

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