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Article
Open AccessDynamics of cold-water dinoflagellates in the northern Baltic Sea based on 18S rRNA gene metabarcoding
Cold-water dinoflagellates contribute significantly to spring blooms in temperate coastal waters. In the northern Baltic Sea, Peridiniella catenata, Apocalathium malmogiense, Gymnodinium corollarium, and Biechele...
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Article
Open AccessGroup 2i Isochrysidales thrive in marine and lacustrine systems with ice cover
Global warming is causing rapid changes to the cryosphere. Predicting the future trajectory of the cryosphere requires quantitative reconstruction of its past variations. A recently identified sea-ice-associat...
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Article
Open AccessComparing methods and indices for biodiversity and status assessment in a hydropower-regulated river
The EU Water Framework Directive (WFD) aims to achieve good status of aquatic habitats. Classification of ecological status and identifying the stressors impacting aquatic habitats is essential for achieving t...
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Article
Open AccessTaxonomically and Functionally Distinct Ciliophora Assemblages Inhabiting Baltic Sea Ice
Ciliophora is a phylum of unicellular eukaryotes that are common and have pivotal roles in aquatic environments. Sea ice is a marine habitat, which is composed of a matrix of solid ice and pockets of saline wa...
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Article
Open AccessGroup 2i Isochrysidales produce characteristic alkenones reflecting sea ice distribution
Alkenones are biomarkers produced solely by algae in the order Isochrysidales that have been used to reconstruct sea surface temperature (SST) since the 1980s. However, alkenone-based SST reconstructions in th...
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Article
Open AccessEnvironmental DNA filtration techniques affect recovered biodiversity
Freshwater metazoan biodiversity assessment using environmental DNA (eDNA) captured on filters offers new opportunities for water quality management. Filtering of water in the field is a logistical advantage c...
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Life associated with Baltic Sea ice
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The formation of sea ice impacts directly on the physical dynamics of water masses (e.g. at the sea surface) and processes (e.g. vertical heat fluxes).
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The annual cycle of formation, consolidati...
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Article
The contribution of mycosporine-like amino acids, chromophoric dissolved organic matter and particles to the UV protection of sea-ice organisms in the Baltic Sea
The effects of ultraviolet radiation (UVR) on the synthesis of mycosporine-like amino acids (MAAs) in sea-ice communities and on the other UV-absorption properties of sea ice were studied in a three-week long in ...
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Article
Fast direct melting of brackish sea-ice samples results in biologically more accurate results than slow buffered melting
Sea-ice samples intended for biological analyses, e.g., chlorophyll-a, cell enumeration of algae and protozoa and primary production, are affected by the sampling and sample processing methods. In this study, we ...
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Article
Comparison of wintertime eukaryotic community from sea ice and open water in the Baltic Sea, based on sequencing of the 18S rRNA gene
The Baltic Sea is one of the world’s largest brackish water basins and is traditionally considered to be species poor. Here, we assessed the diversity of the nano-sized eukaryotic microbial wintertime communit...
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Article
Open AccessMolecular evidence for a diverse green algal community growing in the hair of sloths and a specific association with Trichophilus welckeri(Chlorophyta, Ulvophyceae)
Sloths are slow-moving arboreal mammals inhabiting tropical rainforests in Central and South America. The six living species of sloths are occasionally reported to display a greenish discoloration of their pel...
