Baltic Sea eutrophication status is not improved by the first pillar of the European Union Common Agricultural Policy

Jansson, Torbjörn; Andersen, Hans Estrup; Gustafsson, Bo; Hasler, Berit; Höglind, Lisa; Choi, Hyung-Sik

doi:10.1007/s10113-019-01559-8

Cited by 19 publications

(7 citation statements)

References 21 publications

(24 reference statements)

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“…The results of scenario analyses with this approach show that the targets of the Baltic Sea Action Plan can only be achieved following the trajectories of SSP1 (Pihlainen et al, 2020). Other scenario analyses have focused on the impact of existing policies, and this has for instance shown that the European Union (EU) Agricultural Policy does not contribute to lowering nutrient emissions from agricultural activities (Jansson et al, 2019).…”

Section: Changes In External Driversmentioning

confidence: 99%

Biogeochemical functioning of the Baltic Sea

et al. 2022

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Abstract. Location, specific topography, and hydrographic setting together with climate change and strong anthropogenic pressure are the main factors shaping the biogeochemical functioning and thus also the ecological status of the Baltic Sea. The recent decades have brought significant changes in the Baltic Sea. First, the rising nutrient loads from land in the second half of the 20th century led to eutrophication and spreading of hypoxic and anoxic areas, for which permanent stratification of the water column and limited ventilation of deep-water layers made favourable conditions. Since the 1980s the nutrient loads to the Baltic Sea have been continuously decreasing. This, however, has so far not resulted in significant improvements in oxygen availability in the deep regions, which has revealed a slow response time of the system to the reduction of the land-derived nutrient loads. Responsible for that is the low burial efficiency of phosphorus at anoxic conditions and its remobilization from sediments when conditions change from oxic to anoxic. This results in a stoichiometric excess of phosphorus available for organic-matter production, which promotes the growth of N2-fixing cyanobacteria and in turn supports eutrophication. This assessment reviews the available and published knowledge on the biogeochemical functioning of the Baltic Sea. In its content, the paper covers the aspects related to changes in carbon, nitrogen, and phosphorus (C, N, and P) external loads, their transformations in the coastal zone, changes in organic-matter production (eutrophication) and remineralization (oxygen availability), and the role of sediments in burial and turnover of C, N, and P. In addition to that, this paper focuses also on changes in the marine CO2 system, the structure and functioning of the microbial community, and the role of contaminants for biogeochemical processes. This comprehensive assessment allowed also for identifying knowledge gaps and future research needs in the field of marine biogeochemistry in the Baltic Sea.

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Section: Changes In External Driversmentioning

confidence: 99%

Biogeochemical functioning of the Baltic Sea

et al. 2022

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“…At the historical period, nutrient concentrations were high, leading to higher primary production. If few nutrients enter the Baltic Sea, less primary production occurs (Jansson et al, 2019). Furthermore, high primary production can lead to eutrophication events, which may decrease bottom oxygen concentrations.…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

Mapping and assessment of future changes in the coastal and marine ecosystem services supply in Lithuania

Inácio

Karnauskaitė

Gomes

et al. 2022

Science of The Total Environment

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“…Results of scenario analyses with this approach show that the targets of the Baltic Sea Action Plan can only be achieved following the trajectories of SSP1 (Pihlainen et al, 2020). Other scenario analyses have focused on the impact of existing policies, and this has for instance shown that the European Union (EU) Agricultural Policy does not contribute to lowering nutrient emissions from agricultural activities (Jansson et al, 2019).…”

Section: Changes In External Driversmentioning

confidence: 99%

Baltic Earth Assessment Report on the biogeochemistry of the Baltic Sea

Kuliński

Rehder

Asmala

et al. 2021

Preprint

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Abstract. Location, specific topography and hydrographic setting together with climate change and strong anthropogenic pressure are the main factors shaping the biogeochemical functioning and thus also the ecological status of the Baltic Sea. The recent decades have brought significant changes in the Baltic Sea. First, the rising nutrient loads from land in the second half of the 20th century led to eutrophication and spreading of hypoxic and anoxic areas, for which permanent stratification of the water column and limited ventilation of deep water layers made favourable conditions. Since the 1980s the nutrient loads to the Baltic Sea have been continuously decreasing. This, however, has so far not resulted in significant improvements in oxygen availability in the deep regions, which has revealed a slow response time of the system to the reduction of the land-derived nutrient loads. Responsible for that is the low burial efficiency of phosphorus at anoxic conditions and its remobilization from sediments when conditions change from oxic to anoxic. This results in a stoichiometric excess of phosphorus available for organic matter production, which promotes the growth of N2-fixing cyanobacteria and in turn supports eutrophication. This assessment reviews the available and published knowledge on the biogeochemical functioning of the Baltic Sea. In its content, the paper covers the aspects related to changes in carbon, nitrogen and phosphorus (C, N and P) external loads, their transformations in the coastal zone, changes in organic matter production (eutrophication) and remineralization (oxygen availability), and the role of sediments in burial and turnover of C, N and P. In addition to that, this paper focuses also on changes in the marine CO2 system, structure and functioning of the microbial community and the role of contaminants for biogeochemical processes. This comprehensive assessment allowed also for identifying knowledge gaps and future research needs in the field of marine biogeochemistry in the Baltic Sea.

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Baltic Sea eutrophication status is not improved by the first pillar of the European Union Common Agricultural Policy

Cited by 19 publications

References 21 publications

Biogeochemical functioning of the Baltic Sea

Biogeochemical functioning of the Baltic Sea

Mapping and assessment of future changes in the coastal and marine ecosystem services supply in Lithuania

Baltic Earth Assessment Report on the biogeochemistry of the Baltic Sea

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