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View article: Photoprotective mycosporine-like amino acids in different organs of Baltic flatfish species revealed by targeted and untargeted metabolomics analyses
Photoprotective mycosporine-like amino acids in different organs of Baltic flatfish species revealed by targeted and untargeted metabolomics analyses Open
Coastal marine organisms are often exposed to high levels of biologically harmful ultraviolet radiation (UVR), the most photochemically reactive waveband of sunlight. It is well known that marine organisms at higher trophic levels, such as…
View article: Mass development of a filamentous and likely nitrophilous aerophytic green alga on tree bark: Apatococcus ammoniophilus sp. nov. (Chlorophyta, Trebouxiophyceae)
Mass development of a filamentous and likely nitrophilous aerophytic green alga on tree bark: Apatococcus ammoniophilus sp. nov. (Chlorophyta, Trebouxiophyceae) Open
Introduction A filamentous green alga forming significant biomass on twigs and needles was observed to have increased invasively in Denmark in recent decades. It was particularly abundant in coniferous plantations in western parts of Denma…
View article: Per- and polyfluoroalkyl substances (PFAS) in the cryosphere – occurrence, organismic accumulation, ecotoxicological impacts, transformation, and management strategies
Per- and polyfluoroalkyl substances (PFAS) in the cryosphere – occurrence, organismic accumulation, ecotoxicological impacts, transformation, and management strategies Open
The cryosphere faces increasing threats from anthropogenic pollutants, including per- and polyfluoroalkyl substances (PFAS), a class of synthetic chemicals produced in significant quantities and released into the environment for over seven…
View article: Terrestrial algae and cyanobacteria of the Holosiiv National Nature Park (Kyiv, Ukraine), with the description of Leptochlorella arboricola sp. nov. (Trebouxiophyceae, Chlorophyta)
Terrestrial algae and cyanobacteria of the Holosiiv National Nature Park (Kyiv, Ukraine), with the description of Leptochlorella arboricola sp. nov. (Trebouxiophyceae, Chlorophyta) Open
The article provides the results of a study on terrestrial algae inhabiting various substrates in the Holosiiv National Nature Park, which was established to protect the remnants of natural ecosystems in the Kyiv metropolitan area, Ukraine…
View article: Differential effects of warming on carbon budget, photosynthetic yield and biochemical composition of cold-temperate and Arctic isolates of Laminaria digitata (Phaeophyceae)
Differential effects of warming on carbon budget, photosynthetic yield and biochemical composition of cold-temperate and Arctic isolates of Laminaria digitata (Phaeophyceae) Open
Cold-temperate and Arctic hard bottom coastal ecosystems are dominated by kelp forests, which have a high biomass production and provide important ecosystem services, but are subject to change due to ocean warming. However, the photophysio…
View article: Arctic Biocrusts Highlight Genetic Variability in Photosynthesis as a Key Driver of Biodiversity
Arctic Biocrusts Highlight Genetic Variability in Photosynthesis as a Key Driver of Biodiversity Open
View article: Arctic Biocrusts Highlight Genetic Variability in Photosynthesis as a Key Driver of Biodiversity
Arctic Biocrusts Highlight Genetic Variability in Photosynthesis as a Key Driver of Biodiversity Open
View article: New Strains of the Deep Branching Streptophyte <i>Streptofilum</i> : Phylogenetic Position, Cell Biological and Ecophysiological Traits, and Description of <i>Streptofilum arcticum</i> <scp>sp. nov</scp>
New Strains of the Deep Branching Streptophyte <i>Streptofilum</i> : Phylogenetic Position, Cell Biological and Ecophysiological Traits, and Description of <i>Streptofilum arcticum</i> <span>sp. nov</span> Open
Streptofilum capillatum was recently described and immediately caught scientific attention, because it forms a phylogenetically deep branch in the streptophytes and is characterised by a unique cell coverage composed of piliform scales. It…
View article: Resurrection of a diatom after 7000 years from anoxic Baltic Sea sediment
Resurrection of a diatom after 7000 years from anoxic Baltic Sea sediment Open
Dormancy is a widespread key life history trait observed across the tree of life. Many plankton species form dormant cell stages that accumulate in aquatic sediments and, under anoxic conditions, form chronological records of past species …
View article: The benthic marine algae of the Maldives: historical insights into their diversity and distribution
The benthic marine algae of the Maldives: historical insights into their diversity and distribution Open
In tropical ecosystems worldwide, benthic marine algae are important primary producers and habitat providers for many juvenile fish and invertebrate species. Calcified species are known to provide structural support to their respective com…
View article: Role of Climate and Edaphic Factors on the Community Composition of Biocrusts Along an Elevation Gradient in the High Arctic
Role of Climate and Edaphic Factors on the Community Composition of Biocrusts Along an Elevation Gradient in the High Arctic Open
Biological soil crusts are integral to Arctic ecosystems, playing a crucial role in primary production, nitrogen fixation and nutrient cycling, as well as maintaining soil stability. However, the composition and complex relationships betwe…
View article: Role of Climate and Edaphic Factors on the Community Composition of Biocrusts Along an Elevation Gradient in the High Arctic
Role of Climate and Edaphic Factors on the Community Composition of Biocrusts Along an Elevation Gradient in the High Arctic Open
Biological soil crusts are integral to Arctic ecosystems, playing a crucial role in primary production, nitrogen fixation and nutrient cycling, as well as maintaining soil stability. However, the composition and complex relationships betwe…
View article: Chytrid fungi infecting Arctic microphytobenthic communities under varying salinity conditions
Chytrid fungi infecting Arctic microphytobenthic communities under varying salinity conditions Open
This study aimed to investigate the presence and diversity of fungal parasites in Arctic coastal microphytobenthic communities. These communities represent a key component in the functioning of Arctic trophic food webs. Fungal parasites, p…
View article: Benthic diatom community response to the sudden rewetting of a coastal peatland
Benthic diatom community response to the sudden rewetting of a coastal peatland Open
The coastline of the shallow southern Baltic Sea is a highly dynamic system of spits, lagoonal systems and subtidal flats. On the land side, coastal peatlands are common. Intact peatlands provide important ecosystem services, however, many…
View article: Varying photosynthetic quotients strongly influence net kelp primary production and seasonal differences increase under warming
Varying photosynthetic quotients strongly influence net kelp primary production and seasonal differences increase under warming Open
Reliable net primary production (NPP) estimations of kelp forests are important to evaluate their C-fixation potential. Photosynthetic oxygen measurements can be converted to C-fixation using photosynthetic quotients (PQs). Although there …
View article: Photoperiod and temperature interactions drive the latitudinal distribution of<i>Laminaria hyperborea</i>(Laminariales, Phaeophyceae) under climate change
Photoperiod and temperature interactions drive the latitudinal distribution of<i>Laminaria hyperborea</i>(Laminariales, Phaeophyceae) under climate change Open
Due to global rises in temperature, recent studies predict marine species shifting toward higher latitudes. We investigated the impact of interacting abiotic drivers on the distribution potential of the temperate kelp Laminaria hyperborea …
View article: Species-specific effects of light and temperature on photosynthesis and respiration among Symbiodiniaceae (Dinophyceae)
Species-specific effects of light and temperature on photosynthesis and respiration among Symbiodiniaceae (Dinophyceae) Open
Coral reefs are exposed to various environmental stressors that cause bleaching events, whereby endosymbiotic microalgae (Symbiodiniaceae) disassociate from coral hosts. Bleached corals are compromised and face mortality. The combination o…
View article: UV-absorbing mycosporine-like amino acids in the eyes of temperate marine and freshwater fish species
UV-absorbing mycosporine-like amino acids in the eyes of temperate marine and freshwater fish species Open
Ultraviolet radiation (UVR) is the photochemically most reactive waveband of incident solar irradiation. Despite high absorption in aquatic environments, UVR causes numerous biochemical, genetic, and cytotoxic effects in aquatic organisms.…
View article: Kelp forest community structure and demography in Kongsfjorden (Svalbard) across 25 years of Arctic warming
Kelp forest community structure and demography in Kongsfjorden (Svalbard) across 25 years of Arctic warming Open
The Arctic archipelago of Svalbard is a hotspot of global warming and many fjords experience a continuous increase in seawater temperature and glacial melt while sea‐ice cover declines. In 1996/1998, 2012–2014, and 2021 macroalgal biomass …
View article: Antarctic benthic diatoms after 10 months of dark exposure: consequences for photosynthesis and cellular integrity
Antarctic benthic diatoms after 10 months of dark exposure: consequences for photosynthesis and cellular integrity Open
Antarctic algae are exposed to prolonged periods of extreme darkness due to polar night, and coverage by ice and snow can extend such dark conditions to up to 10 months. A major group of microalgae in benthic habitats of Antarctica are dia…
View article: Biological soil crusts as hotspots of managed soils in mesic environments
Biological soil crusts as hotspots of managed soils in mesic environments Open
Biological soil crusts, or “biocrusts”, are biogeochemical hotspots that significantly influence ecosystem processes in arid environments. Biocrusts play an important ecological role in the pedosphere and can improve nutrient a…
View article: Successional development of the phototrophic community in biological soil crusts, along with soil formation on Holocene deposits at the Baltic Sea coast
Successional development of the phototrophic community in biological soil crusts, along with soil formation on Holocene deposits at the Baltic Sea coast Open
Harsh environmental conditions form habitats colonized by specialized primary microbial colonizers, e.g., biological soil crusts (biocrusts). These cryptogamic communities are well studied in drylands but much less in temperate coastal dun…
View article: Archives of cyanobacterial traits: insights from resurrected <i>Nodularia spumigena</i> from Baltic Sea sediments reveal a shift in temperature optima
Archives of cyanobacterial traits: insights from resurrected <i>Nodularia spumigena</i> from Baltic Sea sediments reveal a shift in temperature optima Open
Cyanobacterial blooms in the Baltic Sea proliferated in recent decades due to rising sea surface temperatures, resulting in significant ecological impacts. To elucidate their current success, we examined ecophysiological, biochemical, and …
View article: Multi-omics for studying and understanding polar life
Multi-omics for studying and understanding polar life Open
Polar ecosystems are experiencing amongst the most rapid rates of regional warming on Earth. Here, we discuss ‘omics’ approaches to investigate polar biodiversity, including the current state of the art, future perspectives and recommendat…
View article: Arctic kelp forest decline -- a consequence of melting glaciers?
Arctic kelp forest decline -- a consequence of melting glaciers? Open
The Arctic archipelago of Svalbard is a hotspot of global warming and many fjords experience a continuous increase in seawater temperature and glacial melt while sea-ice cover declines. In 1996/98 and 2012-14 macroalgal biomass and species…
View article: Kelp forest biomass, species composition and depth distribution survey at Hansneset in Kongsfjorden, Svalbard
Kelp forest biomass, species composition and depth distribution survey at Hansneset in Kongsfjorden, Svalbard Open
<p>Macroalgal surveys were performed at Hansneset, Blomstrand in Kongsfjorden, Svalbard, from the infralittoral fringe down to 15 m depth in June – August 2021. This dataset is part of a time series currently spanning over 25 years a…
View article: Kelp forest biomass, species composition and depth distribution survey at Hansneset in Kongsfjorden, Svalbard
Kelp forest biomass, species composition and depth distribution survey at Hansneset in Kongsfjorden, Svalbard Open
Macroalgal surveys were performed at Hansneset, Blomstrand in Kongsfjorden, Svalbard, from the infralittoral fringe down to 15 m depth in June – August 2021. This dataset is part of a time series currently spanning over 25 years and comple…
View article: Isolation and Structure Elucidation of Novel Mycosporine-like Amino Acids from the Two Intertidal Red Macroalgae Bostrychia scorpioides and Catenella caespitosa
Isolation and Structure Elucidation of Novel Mycosporine-like Amino Acids from the Two Intertidal Red Macroalgae Bostrychia scorpioides and Catenella caespitosa Open
This study presents a phytochemical survey of two common intertidal red algal species, Bostrychia scorpioides and Catenella caespitosa, regarding their MAA (mycosporine-like amino acid) composition, which are known as biogenic sunscreen co…
View article: A polyphasic approach leading to the discovery of new taxa of terrestrial cyanobacteria for the flora of Ukraine
A polyphasic approach leading to the discovery of new taxa of terrestrial cyanobacteria for the flora of Ukraine Open
Several morphotypes of filamentous cyanobacteria were found in the terrestrial habitats of the Kharkiv Region (biological soil crusts) and in the vicinity of Kyiv (old concrete wall in the forest). Morphological and molecular characterizat…
View article: Big data in Antarctic sciences – current status, gaps, and future perspectives
Big data in Antarctic sciences – current status, gaps, and future perspectives Open
This paper was initiated by a multidisciplinary Topic Workshop in the frame of the Deutsche Forschungsgemeinschaft Priority Program 1158 “Antarctic Research with Comparative Investigations in Arctic Ice Areas”, and hence it represents only…