Anders Torstensson
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View article: Diel Bacterioplankton Community Dynamics Under Contrasting Light Regimes
Diel Bacterioplankton Community Dynamics Under Contrasting Light Regimes Open
In the Boreal region, extreme seasonal variations in day–night length expose communities to dynamic light and temperature fluctuations. Freshwater bacterioplankton, representing key ecosystem components, faces climate‐driven shifts; yet th…
View article: Distinct bacterial and protist plankton diversity dynamics uncovered through DNA-based monitoring in the Baltic Sea area
Distinct bacterial and protist plankton diversity dynamics uncovered through DNA-based monitoring in the Baltic Sea area Open
Planktonic microorganisms in coastal waters form the base of food web and biogeochemical cycles. The Baltic Sea area, with its pronounced environmental gradients, serves as a model coastal environment. Yet, microbial diversity assessment a…
View article: A comprehensive dataset on spatiotemporal variation of microbial plankton communities in the Baltic Sea
A comprehensive dataset on spatiotemporal variation of microbial plankton communities in the Baltic Sea Open
The Baltic Sea is one of the largest brackish water environments on earth and is characterised by pronounced physicochemical gradients and seasonal dynamics. Although the Baltic Sea has a long history of microscopy-based plankton monitorin…
View article: Overview of the MOSAiC expedition: Ecosystem
Overview of the MOSAiC expedition: Ecosystem Open
The international and interdisciplinary sea-ice drift expedition “The Multidisciplinary drifting Observatory for the Study of Arctic Climate” (MOSAiC) was conducted from October 2019 to September 2020. The aim of MOSAiC was to study the in…
View article: Multiomics in the central Arctic Ocean for benchmarking biodiversity change
Multiomics in the central Arctic Ocean for benchmarking biodiversity change Open
Multiomics approaches need to be applied in the central Arctic Ocean to benchmark biodiversity change and to identify novel species and their genes. As part of MOSAiC, EcoOmics will therefore be essential for conservation and sustainable b…
View article: Revisiting Potter Cove, King George Island, Antarctica, 12 years later: new observations of marine benthic diatoms
Revisiting Potter Cove, King George Island, Antarctica, 12 years later: new observations of marine benthic diatoms Open
Continuous observations of Antarctic benthic diatoms are necessary to detect changes in species composition and biodiversity that may result from environmental changes. The present work provides a systematic list of benthic diatoms from Po…
View article: Impacts of sea ice melting procedures on measurements of microbial community structure
Impacts of sea ice melting procedures on measurements of microbial community structure Open
Microorganisms play critical roles in sea ice biogeochemical processes. However, microbes living within sea ice can be challenging to sample for scientific study. Because most techniques for microbial analysis are optimized for liquid samp…
View article: DNA extraction protocol for DNA-metabarcoding of marine phytoplankton using Zymobiomics DNA minprep kit (Zymo Research; D4300) v1
DNA extraction protocol for DNA-metabarcoding of marine phytoplankton using Zymobiomics DNA minprep kit (Zymo Research; D4300) v1 Open
The DNA extraction protocol described in this document follows the standard protocol provided with the Zymobiomics DNA miniprep kit (https://files.zymoresearch.com/protocols/_d4300t_d4300_d4304_zymobiomics_dna_miniprep_kit.pdf) with a few …
View article: Sea‐ice microbial communities in the Central Arctic Ocean: Limited responses to short‐term <scp>pCO<sub>2</sub></scp> perturbations
Sea‐ice microbial communities in the Central Arctic Ocean: Limited responses to short‐term <span>pCO<sub>2</sub></span> perturbations Open
The Arctic Ocean is more susceptible to ocean acidification than other marine environments due to its weaker buffering capacity, while its cold surface water with relatively low salinity promotes atmospheric CO 2 uptake. We studied how sea…
View article: Large Diversity in Nitrogen- and Sulfur-Containing Compatible Solute Profiles in Polar and Temperate Diatoms
Large Diversity in Nitrogen- and Sulfur-Containing Compatible Solute Profiles in Polar and Temperate Diatoms Open
Synopsis Intense bottom-ice algal blooms, often dominated by diatoms, are an important source of food for grazers, organic matter for export during sea ice melt, and dissolved organic carbon. Sea-ice diatoms have a number of adaptations, i…
View article: Elevated temperature and decreased salinity both affect the biochemical composition of the Antarctic sea-ice diatom Nitzschia lecointei, but not increased pCO2
Elevated temperature and decreased salinity both affect the biochemical composition of the Antarctic sea-ice diatom Nitzschia lecointei, but not increased pCO2 Open
Areas in western Antarctica are experiencing rapid climate change, where ocean warming results in more sea ice melt simultaneously as oceanic CO 2 levels are increasing. In this study, we have tested how increased temperature (from −1.8 to…
Spatial variability of biogeochemistry in shallow coastal benthic communities of Potter Cove (Antarctica) and the impact of a melting glacier Open
Measurements of biogeochemical fluxes at the sediment-water interface are essential to investigate organic matter mineralization processes but are rarely performed in shallow coastal areas of the Antarctic. We investigated biogeochemical f…
View article: Limited response of a spring bloom community inoculated with filamentous cyanobacteria to elevated temperature and <i>p</i>CO<sub>2</sub>
Limited response of a spring bloom community inoculated with filamentous cyanobacteria to elevated temperature and <i>p</i>CO<sub>2</sub> Open
Temperature and CO 2 levels are projected to increase in the future, with consequences for carbon and nutrient cycling in brackish environments, such as the Baltic Sea. Moreover, filamentous cyanobacteria are predicted to be favored over o…
View article: Establishment of axenic sea-ice diatom cultures, modified from Jaeckisch et al. (2011) v1
Establishment of axenic sea-ice diatom cultures, modified from Jaeckisch et al. (2011) v1 Open
Table 1. Antibiotic concentrations used for establishing axenic sea-ice diatom cultures. References Guillard RRL. 1975. Culture of phytoplankton for feeding marine invertebrates. In: Smith WL, Chanley MH eds. Culture of marine invertebrate…
View article: Microalgal photophysiology and macronutrient distribution in summer sea ice in the Amundsen and Ross Seas, Antarctica
Microalgal photophysiology and macronutrient distribution in summer sea ice in the Amundsen and Ross Seas, Antarctica Open
Our study addresses how environmental variables, such as macronutrients concentrations, snow cover, carbonate chemistry and salinity affect the photophysiology and biomass of Antarctic sea-ice algae. We have measured vertical profiles of i…
View article: OSO Photophysiology
OSO Photophysiology Open
All concentrations are scaled to brine volume
View article: OSO Photophysiology
OSO Photophysiology Open
All concentrations are scaled to brine volume
View article: Climate-driven change in a Baltic Sea summer microplanktonic community – desalination play a more important role than ocean acidification
Climate-driven change in a Baltic Sea summer microplanktonic community – desalination play a more important role than ocean acidification Open
Scenario modeling suggests that the Baltic Sea, one of the largest brackish-water bodies in the world, could expect increased precipitation (decreased salinity) and increased concentration of atmospheric CO2 over the next 100 years. These …