Phytoplankton spring blooms in the southern Baltic Sea—spatio-temporal development and long-term trends

Wasmund, Norbert; Nausch, Günther; Matthäus, Wolfgang

doi:10.1093/plankt/20.6.1099

Cited by 215 publications

(125 citation statements)

References 18 publications

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“…The strong peak in the surface layer of the oxic zone probably represents contributions from phototrophic dinoflagellates. Plausible candidates are Peridiniella catenata and Scrippsiella hangoei, both of which are involved in the spring phytoplankton blooms in the central Baltic Sea (Wasmund et al, 1998;Höglander et al, 2004). The latter species was previously reported to produce dinosterol (Leblond et al, 2007).…”

Section: Phototrophic Vs Heterotrophic Dinoflagellates and Ciliatesmentioning

confidence: 99%

Biomarkers in the stratified water column of the Landsort Deep (Baltic Sea)

et al. 2014

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Abstract. The water column of the Landsort Deep, central Baltic Sea, is stratified into an oxic, suboxic, and anoxic zone. This stratification controls the distributions of individual microbial communities and biogeochemical processes. In summer 2011, particulate organic matter was filtered from these zones using an in situ pump. Lipid biomarkers were extracted from the filters to establish water-column profiles of individual hydrocarbons, alcohols, phospholipid fatty acids, and bacteriohopanepolyols (BHPs). As a reference, a cyanobacterial bloom sampled in summer 2012 in the central Baltic Sea Gotland Deep was analyzed for BHPs. The biomarker data from the surface layer of the oxic zone showed major inputs from cyanobacteria, dinoflagellates, and ciliates, while the underlying cold winter water layer was characterized by a low diversity and abundance of organisms, with copepods as a major group. The suboxic zone supported bacterivorous ciliates, type I aerobic methanotrophic bacteria, sulfate-reducing bacteria, and, most likely, methanogenic archaea. In the anoxic zone, sulfate reducers and archaea were the dominating microorganisms as indicated by the presence of distinctive branched fatty acids: archaeol and pentamethylicosane (PMI) derivatives, respectively. Our study of in situ biomarkers in the Landsort Deep thus provided an integrated insight into the distribution of relevant compounds and describes useful tracers to reconstruct stratified water columns in the geological record.

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Section: Phototrophic Vs Heterotrophic Dinoflagellates and Ciliatesmentioning

confidence: 99%

Biomarkers in the stratified water column of the Landsort Deep (Baltic Sea)

et al. 2014

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“…The lowest content of carbohydrates and glycogen was observed in GG and VM from summer to winter. A large increase in carbohydrates and glycogen was noted at both sites in spring, which can be associated with the phytoplankton bloom (Pliński 1995, Wasmund et al 1998. It means that good trophic conditions delivered enough carbohydrates as a source of immediate energy for basic physiological processes, but also for the development of gonads in females, as they are converted into lipids in the oocytes.…”

Section: Discussionmentioning

confidence: 99%

Comparative study of ecophysiological and biochemical variation between the Baltic and North Sea populations of the invasive soft shell clam Mya arenaria (L. 1758)

Lasota

Pierscieniak

Miac

et al. 2014

Oceanological and Hydrobiological Studies

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Seasonal variations of environmental factors, such as temperature and salinity, require metabolic acclimatization in sedentary benthic fauna distributed over a wide geographical range. The soft-shell clam Mya arenaria inhabits the coastal waters of the North Atlantic including North America and Europe. In Europe, M. arenaria populations are distributed from Iceland to the Mediterranean Sea, including the North Sea, the Baltic Sea and the Black Sea. Seasonal changes in physiological parameters (gonad index, condition index, biochemical composition and respiration rate) of M. arenaria from the Baltic Sea (the Gulf of Gdańsk, Poland), and the North Sea (Versee Meer, the Netherlands) were studied. The sex ratio of both populations did not differ from 1:1 and the seasonal gonad index was higher in the Baltic population. The average condition index changed seasonally at both studied sites, and was also higher in the Baltic population (except the autumn) compared to the North Sea. In * Corresponding author: ocemw@ug.edu.pl both studied populations, the content of proteins, lipids and carbohydrates in the soft tissue followed the seasonal variations, and it was higher in the Baltic population. The respiration rate was lower in the Baltic population, and seasonal changes in the respiration rate seem to be correlated with changes in the water temperature. Based on the results obtained in the present study, we suggest that Mya arenaria is characterized by a large phenotypic plasticity and differences in the observed physiological traits are due to acclimatization to ambient environmental conditions.

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“…Assuming an N and P demand for primary production according to the Redfield ratio (N:P = 16), the winter DIN: DIP ratio is traditionally used to assess the limiting nutrient (Table 18.2). While the spring communities in the Kattegat (Granéli 1987;Granéli et al 1990), the Baltic Proper (Granéli et al 1990;Wasmund et al 1998), the central Gulf of Finland and the Bothnian Sea are generally N limited (Tamminen and Andersen 2007), P limitation prevails in the Bothnian Bay (Tamminen and Andersen 2007). In the proximity of freshwater sources, limitation patterns can change spatially and interannually, depending on run-off (Pitkänen and Tamminen 1995;Seppälä et al 1999;Tamminen and Seppälä 1999;Yurkovskis 2004).…”

Section: Carbon Inputsmentioning

confidence: 99%

“…Engel et al 2002;Nausch et al 2004;Kangro et al 2007;Larsson 2007, 2010). However, lower C:P ratios are also observed in cases where a PO 4 excess with regard to the Redfield N:P ratio exists in the nutrient pool (Wasmund et al 1998). Therefore, the amount of C formed per unit N or P available to producers varies, which further influences C sedimentation and O 2 consumption in sediments and bottom waters.…”

Section: Carbon Inputsmentioning

confidence: 99%

Environmental Impacts—Marine Biogeochemistry

Schneider

Eilola

Lukkari

et al. 2015

Regional Climate Studies

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Marine biogeochemistry deals with the budgets and transformations of biogeochemically reactive elements such as carbon, nitrogen and phosphorus. Inorganic nitrogen and phosphorus compounds are the major nutrients and control organic matter (biomass) production in the surface water. Due to various anthropogenic activities, the input of these nutrients into the Baltic Sea has increased drastically during the last century and has enhanced the net organic matter production by a factor of 2-4 (eutrophication). This has led to detrimental oxygen depletion and hydrogen sulphide production in the deep basins of the Baltic Sea. Model simulations based on the Baltic Sea Action Plan (BSAP) indicate that current eutrophication and thus extension of oxygen-depleted areas cannot be reversed within the next hundred years by the proposed nutrient reduction measures. Another environmental problem is related to decreasing pH (acidification) that is caused by dissolution of the rising atmospheric CO 2 . Estimates indicate a decrease in pH by about 0.15 during the last 1-2 centuries, and continuation of this trend may have serious ecological consequences. However, the concurrent increase in the alkalinity of the Baltic Sea may have significantly counteracted acidification.

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Phytoplankton spring blooms in the southern Baltic Sea—spatio-temporal development and long-term trends

Cited by 215 publications

References 18 publications

Biomarkers in the stratified water column of the Landsort Deep (Baltic Sea)

Biomarkers in the stratified water column of the Landsort Deep (Baltic Sea)

Comparative study of ecophysiological and biochemical variation between the Baltic and North Sea populations of the invasive soft shell clam Mya arenaria (L. 1758)

Environmental Impacts—Marine Biogeochemistry

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