The effect of temperature on the development and hatching of resting eggs of non-indigenous predatory cladoceran Cercopagis pengoi in the Gulf of Finland, Baltic Sea

2008 ◽  
Vol 154 (1) ◽  
pp. 99-108 ◽  
Author(s):  
Sanna Sopanen
Keyword(s):  
Baltic Sea ◽  
Resting Eggs ◽  
Gulf Of Finland ◽  
Effect Of Temperature ◽  
Cercopagis Pengoi ◽  
Predatory Cladoceran ◽  
The Gulf Of Finland

Coupling stable isotopes with bioenergetics to evaluate sources of variation in organochlorine concentrations in Baltic salmon (Salmo salar)

2008 ◽  
Vol 65 (10) ◽  
pp. 2114-2126 ◽  
Author(s):  
Mikko Kiljunen ◽  
Heikki Peltonen ◽  
Roger I. Jones ◽  
Hannu Kiviranta ◽  
Pekka J. Vuorinen ◽  
...  
Keyword(s):  
Salmo Salar ◽  
Individual Variation ◽  
Prey Species ◽  
Trophic Position ◽  
Gulf Of Finland ◽  
Cercopagis Pengoi ◽  
Dioxins And Furans ◽  
Predatory Cladoceran ◽  
Sources Of Variation ◽  
The Gulf Of Finland

Atlantic salmon ( Salmo salar ) collected from three locations around the northern Baltic Sea in 2003–2004 showed large spatial and individual variation in their organochlorines (OCs) (polychlorinated dibenzo-p-dioxins and furans and polychlorinated biphenyls). This variation could be explained only partly by their size or sea age. The variability arose from the differences in salmon diet, trophic position, and prey OC concentrations and lipid content. A salmon bioenergetics accumulation model was used to evaluate the contribution of salmon growth and their diet to the observed individual variation in OC content. Our model revealed that the contribution of three main prey species in the OC accumulation of salmon varied markedly between the study areas. Amount of lipids in salmon explained a large proportion of their OC concentration. However, trophic position of salmon calculated from the δ15N values explained almost 80% of the variation in lipid-normalized OC concentrations. In the Gulf of Finland, where OC concentrations of salmon were highest, their prey species had the highest OC concentrations and trophic positions. Higher OC concentrations in the Gulf of Finland might be related to elevated trophic positions caused by invasion of the predatory cladoceran Cercopagis pengoi in 1990.

The mussel caging approach in assessing biological effects of wastewater treatment plant discharges in the Gulf of Finland (Baltic Sea)

2015 ◽  
Vol 97 (1-2) ◽  
pp. 135-149 ◽  
Author(s):  
Raisa Turja ◽  
Kari K. Lehtonen ◽  
Axel Meierjohann ◽  
Jenny-Maria Brozinski ◽  
Emil Vahtera ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Baltic Sea ◽  
Wastewater Treatment Plant ◽  
Biological Effects ◽  
Treatment Plant ◽  
Gulf Of Finland ◽  
The Gulf Of Finland

scholarly journals An integrated simulation model to evaluate national measures for the abatement of agricultural nutrients in the Baltic Sea

2009 ◽  
Vol 18 (3-4) ◽  
pp. 440-459 ◽  
Author(s):  
K. HYYTIÄINEN ◽  
H. AHTIAINEN ◽  
J. HEIKKILÄ
Keyword(s):  
Water Quality ◽  
Simulation Model ◽  
Baltic Sea ◽  
Arable Land ◽  
Gulf Of Finland ◽  
Nutrient Loads ◽  
The Baltic Sea ◽  
The Baltic ◽  
Bothnian Bay ◽  
The Gulf Of Finland

This study introduces a prototype model for evaluating measures to abate agricultural nutrients in the Baltic Sea from a Finnish national perspective. The stochastic simulation model integrates nutrient dynamics of nitrogen and phosphorus in the sea basins adjoining the Finnish coast, nutrient loads from land and other sources, benefits from nutrient abatement (in the form of recreation and other ecosystem services) and the costs of agricultural abatement activities. The aim of the study is to present the overall structure of the model and to demonstrate its potential using preliminary parameters. The model is made flexible for further improvements in all of its ecological and economic components. The results of a sensitivity analysis suggest that investments in reducing the nutrient load from arable land in Finland would become profitable only if the neighboring countries in the northern Baltic committed themselves to similar reductions. Environmental investments for improving water quality yield the highest returns for the Bothnian Bay and the Gulf of Finland, with smaller returns for the Bothnian Sea. Somewhat surprisingly, in the Bothnian Bay the abatement activities become profitable from the national viewpoint, because the riverine loads from Finland represent a high proportion of the total nutrient loads. In the Gulf of Finland, this proportion is low, but the size of the coastal population benefiting from improved water quality is high.;

Three new chrysophycean stomatocysts with long spines from the Gulf of Finland, Baltic Sea

Phytotaxa ◽  
2021 ◽  
Vol 528 (4) ◽  
pp. 255-260
Author(s):  
SVETLANA N. SHADRINA
Keyword(s):  
Baltic Sea ◽  
Working Group ◽  
Gulf Of Finland ◽  
Sem Micrographs ◽  
Biological Affinity ◽  
The Gulf Of Finland

Three new morphotypes of chrysophycean stomatocysts with long spines are described following International Statospore Working Group (ISWG) guidelines and illustrated by SEM micrographs. Differences of our new morphotypes from known stomatocysts are discussed. Their biological affinity is currently unknown.

scholarly journals Near-Bottom Hypoxia Impacts Dynamics of Bacterioplankton Assemblage throughout Water Column of the Gulf of Finland (Baltic Sea)

PLoS ONE ◽  
2016 ◽  
Vol 11 (5) ◽  
pp. e0156147 ◽  
Author(s):  
Peeter Laas ◽  
Elina Šatova ◽  
Inga Lips ◽  
Urmas Lips ◽  
Jaak Simm ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Water Column ◽  
Gulf Of Finland ◽  
Bottom Hypoxia ◽  
The Gulf Of Finland

scholarly journals Influence of St. Petersburg urban rivers on the inflow of pollutants into the Baltic Sea

2020 ◽  
Vol 163 ◽  
pp. 03006
Author(s):  
Stepan Klubov ◽  
Victor Tretyakov
Keyword(s):  
Baltic Sea ◽  
Gulf Of Finland ◽  
Urban Rivers ◽  
The Baltic Sea ◽  
Saint Petersburg ◽  
The Baltic ◽  
The Gulf Of Finland

The results of the calculation of the inflow of pollutants into the Gulf of Finland with the outflow from Saint Petersburg watercourses are considered. Data of regular hydrochemical observations by State Unitary Enterprise “Vodokanal of Saint Petersburg” for 2018 were used for the calculation. The contribution of the megalopolis of Saint Petersburg to change of the pollutants inflow is estimated.

Changes in wintertime pH and hydrography of the Gulf of Finland (Baltic Sea) with focus on depth layers

2017 ◽  
Vol 189 (4) ◽  
Author(s):  
Anna-Karin Almén ◽  
Olivier Glippa ◽  
Heidi Pettersson ◽  
Pekka Alenius ◽  
Jonna Engström-Öst
Keyword(s):  
Baltic Sea ◽  
Gulf Of Finland ◽  
The Gulf Of Finland
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