Temporal Trends and Geographical Differences of Perfluoroalkyl Acids in Baltic Sea Herring and White-Tailed Sea Eagle Eggs in Sweden

2016 ◽  
Vol 50 (23) ◽  
pp. 13070-13079 ◽  
Author(s):  
Suzanne Faxneld ◽  
Urs Berger ◽  
Björn Helander ◽  
Sara Danielsson ◽  
Aroha Miller ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Temporal Trends ◽  
Perfluoroalkyl Acids ◽  
Geographical Differences

Radioactivity in the Baltic Sea: inventories and temporal trends of 137Cs and 90Sr in water and sediments

2009 ◽  
Vol 282 (2) ◽  
pp. 419-425 ◽  
Author(s):  
Tarja Katri Ikäheimonen ◽  
Iisa Outola ◽  
Vesa-Pekka Vartti ◽  
Pekka Kotilainen
Keyword(s):  
Baltic Sea ◽  
Temporal Trends ◽  
The Baltic Sea ◽  
The Baltic

scholarly journals Distribution of perfluoroalkyl acids in fish species from the Baltic Sea and freshwaters in Finland

Chemosphere ◽  
2021 ◽  
pp. 132688
Author(s):  
Eva Kumar ◽  
Jani Koponen ◽  
Panu Rantakokko ◽  
Riikka Airaksinen ◽  
Päivi Ruokojärvi ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Fish Species ◽  
Perfluoroalkyl Acids ◽  
The Baltic Sea ◽  
The Baltic

scholarly journals Temporal Trends in Phosphorus Concentrations and Losses from Agricultural Monitoring Sites in Latvia

2021 ◽  
Vol 25 (1) ◽  
pp. 233-242
Author(s):  
Ieva Siksnane ◽  
Ainis Lagzdins
Keyword(s):  
Baltic Sea ◽  
Water Discharge ◽  
Temporal Trends ◽  
Agricultural Runoff ◽  
Trend Test ◽  
The Baltic Sea ◽  
Nitrogen And Phosphorus ◽  
Study Sites ◽  
The Baltic ◽  
Statistical Trends

Abstract The Baltic Sea is the youngest sea on our planet, the environment of the sea is considered to be unique and fragile. It is affected by various human activities resulting in the impairment of water quality. Riverine nutrient (nitrogen and phosphorus) loads are among the major causes of eutrophication of the Baltic Sea. This study examines temporal trends in water discharge, total phosphorus (TP) and orthophosphate-phosphorus (PO4-P) concentrations and losses from three agricultural runoff monitoring sites in Latvia including Berze, Mellupite, and Vienziemite. The annual datasets of TP and PO4-P concentrations and losses were tested for statistical trends using a nonparametric test - the Mann-Kendall trend test. The timeframe of this study was from 1995 until 2018. The results show a large variety of annual mean concentrations and losses of TP and PO4-P in the study period. No statistically significant trend was detected for TP losses. Meanwhile, statistically significant downward trends were observed for TP concentrations in four out of six study sites and in two study sites for PO4-P concentrations.

Temporal trends of perfluoroalkyl acids in plasma samples of pregnant women in Hokkaido, Japan, 2003–2011

2013 ◽  
Vol 60 ◽  
pp. 89-96 ◽  
Author(s):  
Emiko Okada ◽  
Ikuko Kashino ◽  
Hideyuki Matsuura ◽  
Seiko Sasaki ◽  
Chihiro Miyashita ◽  
...  
Keyword(s):  
Pregnant Women ◽  
Temporal Trends ◽  
Perfluoroalkyl Acids ◽  
Plasma Samples

scholarly journals A decade of methane measurements at the Boknis Eck Time-series Station in the Eckernförde Bay (Southwestern Baltic Sea)

2020 ◽  
Author(s):  
Xiao Ma ◽  
Mingshuang Sun ◽  
Sinikka T. Lennartz ◽  
Hermann W. Bange
Keyword(s):  
Time Series ◽  
Baltic Sea ◽  
Environmental Changes ◽  
Temporal Trends ◽  
Bottom Layer ◽  
Physical Processes ◽  
Complex Interplay ◽  
Monthly Basis ◽  
Variable Source ◽  
Measurement Period

Abstract. Coastal areas contribute significantly to the emissions of methane (CH4) from the ocean. In order to decipher its temporal variability in the whole water column, dissolved CH4 was measured on a monthly basis at the Boknis Eck Time-series Station (BE) located in the Eckernförde Bay (SW Baltic Sea) from 2006 to 2017. BE has a water depth of about 28 m and dissolved CH4 was measured at six water depths ranging from 0 to 25 m. In general CH4 concentrations increased with depth, indicating a sedimentary release of CH4. Pronounced enhancement of the CH4 concentrations in the bottom layer (15–25 m) was found during February, May–June and October. CH4 was not correlated with Chlorophyll a or O2 over the measurement period. Unusually high CH4 concentrations (of up to 696 nM) were sporadically observed in the upper layer (0–10 m) (e.g. in November 2013 and December 2014) and were coinciding with Major Baltic Inflow (MBI) events. Surface CH4 concentrations were always supersaturated throughout the monitoring period, indicating that the Eckernförde Bay is an intense but highly variable source of atmospheric CH4. We did not detect significant temporal trends in CH4 concentrations or emissions, despite of ongoing environmental changes such as warming and deoxygenation in the Eckernförde Bay. Overall, the CH4 variability at BE is driven by a complex interplay of various biological and physical processes.

scholarly journals Mass Balance of Perfluoroalkyl Acids in the Baltic Sea

2013 ◽  
Vol 47 (9) ◽  
pp. 4088-4095 ◽  
Author(s):  
Marko Filipovic ◽  
Urs Berger ◽  
Michael S. McLachlan
Keyword(s):  
Baltic Sea ◽  
Mass Balance ◽  
Perfluoroalkyl Acids ◽  
The Baltic Sea ◽  
The Baltic

scholarly journals A decade of methane measurements at the Boknis Eck Time Series Station in Eckernförde Bay (southwestern Baltic Sea)

2020 ◽  
Vol 17 (13) ◽  
pp. 3427-3438
Author(s):  
Xiao Ma ◽  
Mingshuang Sun ◽  
Sinikka T. Lennartz ◽  
Hermann W. Bange
Keyword(s):  
Time Series ◽  
Baltic Sea ◽  
Environmental Changes ◽  
Temporal Trends ◽  
Bottom Layer ◽  
Physical Processes ◽  
Complex Interplay ◽  
Monthly Basis ◽  
Variable Source ◽  
Measurement Period

Abstract. Coastal areas contribute significantly to the emissions of methane (CH4) from the ocean. In order to decipher its temporal variability in the whole water column, dissolved CH4 was measured on a monthly basis at the Boknis Eck Time Series Station (BE) located in Eckernförde Bay (SW Baltic Sea) from 2006 to 2017. BE has a water depth of about 28 m, and dissolved CH4 was measured at six water depths ranging from 0 to 25 m. In general, CH4 concentrations increased with depth, indicating a sedimentary release of CH4. Pronounced enhancement of the CH4 concentrations in the bottom layer (15–25 m) was found during February, May–June and October. CH4 was not correlated with Chlorophyll a or O2 over the measurement period. Unusually high CH4 concentrations (of up to 696 nM) were sporadically observed in the upper layer (0–10 m; e.g., in November 2013 and December 2014) and coincided with major Baltic inflow (MBI) events. Surface CH4 concentrations were always supersaturated throughout the monitoring period, indicating that Eckernförde Bay is an intense but highly variable source of atmospheric CH4. We did not detect significant temporal trends in CH4 concentrations or emissions, despite ongoing environmental changes such as warming and deoxygenation in Eckernförde Bay. Overall, the CH4 variability at BE is driven by a complex interplay of various biological and physical processes.

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