Markus Majaneva
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View article: Phytoplankton monitoring : the effect of sampling methods used during different stratification and bloom conditions in the Baltic Sea
Phytoplankton monitoring : the effect of sampling methods used during different stratification and bloom conditions in the Baltic Sea Open
Investigation of the phytoplankton community is an important part of the overall water quality monitoring. Different countries and research institutes have different methods and traditions in sampling methods. In this study, the applicabil…
View article: Dynamics of cold-water dinoflagellates in the northern Baltic Sea based on 18S rRNA gene metabarcoding
Dynamics of cold-water dinoflagellates in the northern Baltic Sea based on 18S rRNA gene metabarcoding Open
Cold-water dinoflagellates contribute significantly to spring blooms in temperate coastal waters. In the northern Baltic Sea, Peridiniella catenata , Apocalathium malmogiense , Gymnodinium corollarium , and Biecheleria baltica predominate …
View article: Group 2i Isochrysidales thrive in marine and lacustrine systems with ice cover
Group 2i Isochrysidales thrive in marine and lacustrine systems with ice cover Open
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-associated haptophyte, known as Group …
View article: Group 2i Isochrysidales thrive in marine and lacustrine systems with ice cover
Group 2i Isochrysidales thrive in marine and lacustrine systems with ice cover Open
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-associated haptophyte, known as Group …
View article: Group 2i Isochrysidales thrive in marine and lacustrine systems with ice cover
Group 2i Isochrysidales thrive in marine and lacustrine systems with ice cover Open
Karen J Wang1,2,*, Yongsong Huang1,2,*, Tyler Kartzinel2,3, Markus Majaneva4, Nora Richter1,2,5, Sian Liao2,6, Camilla S Andresen7Department of Earth, Environmental and Planetary Sciences, Brown University, Providence, RI, 02912, USAInstit…
View article: Group 2i Isochrysidales thrive in marine and lacustrine systems with ice cover
Group 2i Isochrysidales thrive in marine and lacustrine systems with ice cover Open
Karen J Wang1,2,*, Yongsong Huang1,2,*, Tyler Kartzinel2,3, Markus Majaneva4, Nora Richter1,2,5, Sian Liao2,6, Camilla S Andresen7Department of Earth, Environmental and Planetary Sciences, Brown University, Providence, RI, 02912, USAInstit…
View article: Comparing methods and indices for biodiversity and status assessment in a hydropower-regulated river
Comparing methods and indices for biodiversity and status assessment in a hydropower-regulated river Open
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 this aim. Here, we evaluate dif…
View article: Relic DNA confounds the results of DNA-based study on microeukaryotic succession in aquatic biofilms
Relic DNA confounds the results of DNA-based study on microeukaryotic succession in aquatic biofilms Open
High-throughput sequencing has revolutionized the DNA sequence-based study of microbial community and diversity on an unprecedented scale. Relic DNA is widespread in the natural aquatic environment; however, the extent to which such DNA ca…
View article: DNA metabarcoding - Guidelines to monitor phytoplankton diversity and distribution in marine and brackish waters
DNA metabarcoding - Guidelines to monitor phytoplankton diversity and distribution in marine and brackish waters Open
We present guidelines for using environmental DNA metabarcoding, together with conventional techniques, to monitor the taxonomic diversity of phytoplankton in marine and brackish waters. The focus is on eukaryotic and prokaryotic phytoplan…
View article: Different approaches to estimate benthic metazoan diversity associated with free-living macroalgae (<i>Fucus vesiculosus</i>) on shallow soft sediments
Different approaches to estimate benthic metazoan diversity associated with free-living macroalgae (<i>Fucus vesiculosus</i>) on shallow soft sediments Open
Habitat complexity can boost biodiversity by providing a wide range of niches allowing species co-existence. Baltic Sea benthic communities are characterised by low species diversity. Thus the occurrence of the habitat forming macroalga Fu…
View article: Regulation effect in river Nea
Regulation effect in river Nea Open
The aim of the project was to assess the effect of regulation and weirs on diversity of river benthic macroinvertebrates. Macroinvertebrates were sampled by four-minute kick-net sampling, using a 500-µm net. Samples were collected in sprin…
View article: Designing a surveillance program for early detection of alien plants and insects in Norway
Designing a surveillance program for early detection of alien plants and insects in Norway Open
Naturalized species of alien plants and animals comprise < 3% of biodiversity recorded in Norway but have had major impacts on natural ecosystems through displacement of native species. Encroachment of alien species has been especially pro…
View article: DNA Metabarcoding of Preservative Ethanol Reveals Changes in Invertebrate Community Composition Following Rotenone Treatment
DNA Metabarcoding of Preservative Ethanol Reveals Changes in Invertebrate Community Composition Following Rotenone Treatment Open
The botanical compound rotenone is extensively used to eradicate populations and reduce the negative impacts of freshwater invasive animals. The method is controversial as non-target organisms often are negatively affected, but these effec…
View article: Benthic biodiversity in four pairs of Norwegian lakes
Benthic biodiversity in four pairs of Norwegian lakes Open
The aim of the project was to assess the effect of water-level regulation on diversity of lake littoral meiofauna and protists. Littoral fine-gravel bottoms of four pairs of Norwegian lakes were sampled in June and September 2021. Lakes we…
View article: First circumpolar assessment of Arctic freshwater phytoplankton and zooplankton diversity: Spatial patterns and environmental factors
First circumpolar assessment of Arctic freshwater phytoplankton and zooplankton diversity: Spatial patterns and environmental factors Open
Arctic freshwaters are facing multiple environmental pressures, including rapid climate change and increasing land___use activities. Freshwater plankton assemblages are expected to reflect the effects of these stressors through shifts in s…
View article: The use of eDNA and DNA metabarcoding in monitoring the ecological condition of Norwegian lakes
The use of eDNA and DNA metabarcoding in monitoring the ecological condition of Norwegian lakes Open
Biodiversity assessments using molecular identification of organisms through high-throughput sequencing techniques have been a game changer in ecosystem monitoring, providing increased taxonomic resolution, more objective identifications, …
View article: Technical challenges when scaling up macroinvertebrate DNA metabarcoding
Technical challenges when scaling up macroinvertebrate DNA metabarcoding Open
Bulk macroinvertebrate DNA metabarcoding is proven a useful tool for routine assessment of freshwater ecosystems. Following a small scale study in 2017, using 18 samples from Finland Elbrecht et al. 2017, sampling and metabarcoding efforts…
View article: Metabarcoding for use in Nordic routine aquatic biomonitoring - a validation study
Metabarcoding for use in Nordic routine aquatic biomonitoring - a validation study Open
Over 75% of all lakes and 40% of all rivers in the EU are found in the Nordic countries. Biomonitoring according to the EU Water Framework Directive (WFD) is adopted by all Nordic countries and forms an integral part of management efforts …
View article: Multi-marker DNA metabarcoding reflects tardigrade diversity in different habitats
Multi-marker DNA metabarcoding reflects tardigrade diversity in different habitats Open
Like meiofauna in general, tardigrades are often neglected in ecological and environmental surveys. Tardigrades occur in all parts of the world, from deep marine sediments to alpine environments, and are present in most ecosystems. They ar…
View article: An urban Blitz with a twist: rapid biodiversity assessment using aquatic environmental DNA
An urban Blitz with a twist: rapid biodiversity assessment using aquatic environmental DNA Open
As global biodiversity declines, there is an increasing need to create an educated and engaged society. Having people of all ages participate in measuring biodiversity where they live helps to create awareness. Recently, the use of environ…
View article: A rapid urban biodiversity blitz using aquatic environmental DNA
A rapid urban biodiversity blitz using aquatic environmental DNA Open
Background As global biodiversity declines, there’s an increasing need to create an educated and engaged society. Having people from all ages participate in measuring biodiversity where they live helps to create awareness. Recently, the us…
View article: Deficiency syndromes in top predators associated with large-scale changes in the Baltic Sea ecosystem
Deficiency syndromes in top predators associated with large-scale changes in the Baltic Sea ecosystem Open
Vitamin B1 (thiamin) deficiency is an issue periodically affecting a wide range of taxa worldwide. In aquatic pelagic systems, thiamin is mainly produced by bacteria and phytoplankton and is transferred to fish and birds via zooplankton, b…
View article: DNA metabarcoding adds valuable information for management of biodiversity in roadside stormwater ponds
DNA metabarcoding adds valuable information for management of biodiversity in roadside stormwater ponds Open
Stormwater ponds are used to compensate for the adverse effects that road runoff might have on the natural environment. Depending on their design and placement, stormwater ponds can act as both refugia and traps for local biodiversity. To …
View article: Mamiellophyceae shift in seasonal predominance in the Baltic Sea
Mamiellophyceae shift in seasonal predominance in the Baltic Sea Open
The green algae Mamiellophyceae are a group of marine picoeukaryotes. We studied the succession of Mamiellophyceae in the Baltic Sea water column and ice from autumn to summer, using the hypervariable V4 region of the 18S ribosomal RNA (18…