After several years in the making, HOLAS 3 thematic assessments on the state of the Baltic Sea have been published, covering the period of 2016–2021. The thematic assessments are part of the third HELCOM holistic assessment (HOLAS 3), providing a holistic view of the Baltic Sea ecosystem health.
The holistic approach highlights the interconnectedness of various environmental factors and their impact on the ecosystem. The five assessment reports each focus on a specific topic, addressing the state of biodiversity, environmental pressures, eutrophication, and the relationship between humanity and nature. The findings offer valuable insights for policymakers, scientists, and stakeholders alike.
The results of HOLAS 3 have been published in stages, commencing in March 2023, and the process will culminate in the publication of the summary report State of the Baltic Sea, expected at the end of October 2023.
A comprehensive holistic assessment on the state of the Baltic Sea is conducted once every six years. The reports result from collaborative efforts among HELCOM member states, scientific experts, and organizations dedicated to the protection of the Baltic Sea. They serve as a cornerstone of HELCOM’s work and policymaking, assisting in the monitoring of the implementation and the effectiveness of the Baltic Sea Action Plan(BSAP).
The recently updated online tool HELCOM Explorer allows to easily see how HELCOM cooperation bears fruit, and how the countries’ actions are being fulfilled when reaching the majority of their ambitious HELCOM targets and the ultimate goal: Baltic Sea in good ecological state.
The actions listed in the Explorer include the entire updated Baltic Sea Action Plan (2021), HELCOM Ministerial Meeting commitments from 2010 onwards as well as selected HELCOM Recommendations. The updated BSAP contains 199 concrete actions and measures addressing biodiversity, eutrophication, hazardous substances, and sea-based activities such as shipping and fisheries. In addition, it includes new actions on emerging or previously less highlighted pressures such as climate change, marine litter, pharmaceuticals, underwater noise, and seabed disturbance.
As most actions of the 2021 Baltic Sea Action Plan have a deadline years ahead, they now show red, Not accomplished, in the HELCOM Explorer.
“As the HELCOM Explorer provides a comprehensive overview and a great amount of information on both joint and national actions, with easy filtering tools, it is quite a unique system in regional marine governance. Moreover, it is a very concrete indicator of transparency for our stakeholders and to the broader audiences”, says Rüdiger Strempel, Executive Secretary of HELCOM.
Joint actions are carried out together by all HELCOM Contracting Parties, for example creating a new Recommendation, joint management guidelines, or assessments of environmental status. National actions are implemented at the country level, and they include e.g. incorporating the provisions of a HELCOM Recommendation into relevant national legislation or guidelines.
The Explorer allows for easy overview browsing, but also for more detailed filtering, according to the details of the actions in the Baltic Sea Action Plan such as segment, theme, or target year. The tool further provides information on why the action is needed (rationale), what pressures or activities are addressed by the action in question, and, for some, what is the potential effect of the measure to reduce pressures or improve the state of the Baltic Sea. All data is available for download.
The HELCOM Explorer tool to track the progress on the implementation of HELCOM commitments was first launched in 2016, and the interface was updated in 2020.
The reporting on the implementation of the joint actions is done by relevant HELCOM Working Groups and the reporting on the national actions by the countries. The first reporting on the implementation of actions in the 2021 BSAP is planned to take place in 2025, followed by the second reporting round in 2029.
Contact
Laura Kaikkonen
Project Researcher
laura.kaikkonen@helcom.fi
Susanna Kaasinen
Associate Professional Secretary
susanna.kaasinen@helcom.fi
About the Baltic Sea Action Plan (BSAP)
The Baltic Sea Action Plan (BSAP) is HELCOM’s strategic programme of measures and actions for achieving good environmental status of the sea, ultimately leading to a Baltic Sea in a healthy state.
Initially adopted by the HELCOM Contracting Parties in 2007, the 2021 BSAP is based on the original plan and maintains the same level of ambition. It also retains all actions previously agreed on that are still to be implemented, while, in addition, includes new actions to strengthen the existing efforts and tackle emerging concerns.
Guided by the HELCOM vision of “a healthy Baltic Sea environment with diverse biological components functioning in balance, resulting in a good ecological status and supporting a wide range of sustainable economic and social activities”, the updated BSAP is divided into four segments with specific goals: biodiversity, eutrophication, hazardous substances and sea-based activities.
About HELCOM Recommendations
One of the most important duties of the Helsinki Commission is to make Recommendations on measures to address certain pollution sources or areas of concern. Since the beginning of the 1980s HELCOM has adopted some 260 HELCOM Recommendations for the protection of the Baltic Sea. The implementation of various HELCOM recommendations by the HELCOM Contracting Parties plays an important role in achieving the objectives of the Baltic Sea Action Plan. The HELCOM Explorer covers the reporting on the implementation status of selected HELCOM Recommendations.
About HELCOM
The Baltic Marine Environment Protection Commission – also known as the Helsinki Commission (HELCOM) – is an intergovernmental organization (IGO) and a regional sea convention in the Baltic Sea area, consisting of ten members: the nine Baltic Sea countries Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia and Sweden, plus the European Union. A platform for environmental policy making at the regional level, HELCOM works for a healthy Baltic Sea. Its mandate stems from a regional treaty, the Helsinki Convention, whose implementation it oversees. The HELCOM Secretariat is located in Helsinki, Finland.
To improve on the quality of monitoring data in the Baltic Sea, an intercalibration of analyzing methods of nutrients and heavy metals was recently carried out involving 22 laboratories across the region. The results were published in a report.
“For accurate Baltic-wide assessments of nutrient and metal concentrations, intercalibration between laboratories is crucial as it guarantees the compatibility of reported data, basically allowing us to compare apples with apples,” said Dmitry Frank-Kamenetsky, the coordinator of the HELCOM Pollution Load Compilation (PLC) projects.
HELCOM now regularly organizes intercalibration campaigns at the beginning of each PLC project, to assure compatibility of reported data regarding nutrients and heavy metals. The latest campaign was already the third of its kind.
“The more we intercalibrate, the better data we get,” said Frank-Kamenetsky. “The good results of the recent intercalibration exercise confirm the trend of a continuous improvement of environmental monitoring data produced by the HELCOM countries.”
Marine litter and underwater noise topped the agenda of PRESSURE 14-2021, the meeting of the HELCOM Pressure Working Group dealing with pressures on the Baltic Sea, and which was held online from 13 to 16 April 2021.
A revised full version of the HELCOM Regional Action Plan on Marine Litter (RAP ML) was presented at PRESSURE 14-2021. Based on the initial plan that was adopted in 2015 and incorporating the lessons learnt from all previous implementation efforts, the updated version is due to be adopted in October 2021 during the HELCOM Ministerial Meeting 2021, alongside the new Baltic Sea Action Plan (BSAP).
PRESSURE 14-2021 further recognized the successful implementation of some of the actions under the current RAP ML, notably on including HELCOM guidelines on marine litter in national and local waste prevention and waste management plans, as well as sharing best practices on waste management.
Other completed actions under the RAP ML include the development of best practices on the disposal of scrapped pleasure boats and handling of expanded polystyrene, the identification of key practical aspects of prevention of litter, and the retrieval and the management of ghost nets, among others.
On underwater noise, a factor affecting species that are reliant on hearing, such as harbour porpoises, seals and some species of fish, wide support was expressed for the draft Regional Action Plan on Underwater Noise that is currently under development. The plan is due to be adopted with the BSAP later this year, along with an accompanying HELCOM Recommendation.
PRESSURE 14-2021 further developed recommendations on the regional policy document on hazardous substances that provides guidance on the upcoming HELCOM framework for hazardous substances. The framework is being developed to provide a more efficient and future-proof response to threats to the marine environment stemming from hazardous substances, especially from new chemicals.
During the meeting, the topics of physical damage to the seafloor, the next HELCOM holistic assessment (HOLAS III), the update of the Baltic Sea Action Plan, eutrophication and issues pertaining to nutrients such as the Nutrient Recycling Strategy and the HELCOM framework on internal nutrient load management were also discussed.
The meeting was attended by all HELCOM Contracting Parties and observers from Coalition Clean Baltic (CCB), Baltic Farmers’ Forum on Environment (BFFE), the Federation of European Aquaculture Producers (FEAP), European Federation of National Associations of Water and Wastewater Services (EurEau), Race for the Baltic, and John Nurminen Foundation, as well as by invited guest from Baltic Nest Institute (BNI) and the City of Helsinki.
Entering a final stretch, another major milestone was crossed last week when the first full draft of the updated Baltic Sea Action Plan (BSAP) was presented to the organization’s decision-makers during the autumn meeting of the HELCOM Heads of Delegation (HOD 59-2020) that took place online.
Building on the existing plan, the updated BSAP is expected to maintain and adapt the current structure and segments that seek to reflect the pressures stemming from land (“Eutrophication” and “Hazardous substances and litter”) and from our activities at sea (“Sea-based activities”) as well as the state of the environment (“Biodiversity and ecosystems”).
In addition, the updated plan is due to feature a segment on horizontal actions having an incidence on the four main segments. These are climate change, monitoring, maritime spatial planning, economic and social analysis, and financing.
Furthermore, all measures and actions contained in the new plan are intended to be implemented by 2030 at the latest.
The updated BSAP is expected to be adopted by the Ministers of the HELCOM Contracting Parties during the HELCOM Ministerial Meeting that will be held in Lübeck, Germany on 20 October 2021.
With its set of targets for protecting biodiversity and reducing the pressures affecting the Baltic, as well as its number of concrete measures, the BSAP remains one of the most effective instruments for achieving the HELCOM ecological objectives, offering a long-term vision and strategic orientation for attaining good environmental status in the Baltic.
The original plan, adopted in 2007, can be credited with significantly reducing inputs of nutrients and hazardous substances, improving the protection of biodiversity, and boosting cleaner and safer shipping practices.
At HOD 59-2020, the decision-makers also approved a draft of the HELCOM Science Agenda that is meant to support the implementation of the BSAP and other HELCOM processes, by identifying the scientific knowledge needs related to the Baltic marine environment and which are foreseen to surface in the next 10 years.
Meant to be launched alongside the new BSAP, the first draft of the Baltic Sea Regional Nutrient Recycling Strategywas also presented during the meeting. In a bid to curb eutrophication, the strategy seeks to minimize the run-off of nutrients, stemming mainly from agricultural sources such as fertilizers, to the Baltic Sea by keeping them in a closed loop.
More good news: the Heads of Delegation announced the removal of HELCOM Hot Spot n°42, the Riga wastewater treatment plant (WWTP), from its list of pollution sites.
More than EUR 200 million were invested in the plant over the last 20 years, leading to a significant reduction of the discharges of nutrients and hazardous substances to the Baltic via the Lielupe river. The WWTP is now complying with EU regulations and almost fully meets the more stringent HELCOM targets on water purification.
The Riga WWTP had been added to the list of significant pollution sites due to insufficient treatment of wastewater and a large share of untreated municipal wastewater being released to the environment.
The HELCOM Heads of Delegation further approved the draft of a key regional instrument for fighting pollution incidents at sea, the Joint Inter-Regional Marine HNS Response Manual which will replace the current HELCOM Response Manual Volume II. A guideline for addressing and coordinating response to major accidents such as oil or chemical spills, the manual is expected to be adopted during the next meeting of the Helsinki Commission in March 2021.
The procedure is supported by an online decision tool that gives shipping professionals a quick overview of the risk of introducing non-indigenous species (NIS) through ballast water between two ports. Co-developed with OSPAR and recently updated, the tool covers both the North and Baltic Seas.
The collaboration between HELCOM and OSPAR comes at a time when both organizations are actively seeking to strengthen their partnership, a fact particularly welcomed during HOD 59-2020.
Experts from the German National Academy of Sciences Leopoldina also presented their recent discussion paper on underwater archaeology “Traces under Water”, highlighting the mutual benefits of protecting both the marine environment and underwater heritage from the common pressures arising from ammunitions, ghost nets and eutrophication.
Chaired by Germany, HOD 59-2020 was attended by participants from all Contracting Parties, by Observers from Baltic Farmers’ Forum on Environment (BFFE), Baltic Sea Advisory Council (BSAC), Baltic Sea Parliamentary Conference (BSPC), Baltic Sea States Subregional Co-operation (BSSSC) & CPMR Baltic Sea Commission, Coalition Clean Baltic (CCB), Cruise Lines International Association Europe (CLIA Europe), Federation of European Aquaculture Producers (FEAP), Global Water Partnership Central and Eastern Europe and World Wide Fund for Nature (WWF) and by invited guests.
In a bid to better understand the effects of certain hazardous substances on the Baltic Sea, HELCOM, in collaboration with Stockholm University’s Baltic Sea Centre, has compiled the latest science on selected chemical contaminants.
“We must identify the major sources of the hazardous substances and understand how they move in the ecosystems to be able to do something about the problem,” said Emma Undeman, a researcher at Stockholm University and lead author of the reports.
The reports give insights into the sources and pathways to the sea of the addressed substances, as well as on how their concentrations have changed in the Baltic Sea over time.
Dioxins and PCBs, mainly by-products from industrial processes, primarily stem from atmospheric emissions, further persisting in the environment and accumulating in the food chain. This is a particular cause for concern since these substances are known for their adverse effects on the nervous, immune and endocrine systems of living organisms.
The levels of brominated flame retardants (PBDE) – which are now either banned or regulated but were heavily used in the past as additives to prevent ignition and delay spread of fire such as in furniture and curtains – seem to be declining, but trends show that it could take up to 40 years for these contaminants to reach safe levels in the Baltic Sea.
With regard to PFOS and PFAS, used for instance in metal coatings such as Teflon or in firefighting foams, the main pathways are discharges from wastewater treatment plants, and runoff from contaminated sites via groundwater and drainage ditches. Research on PFOS in Baltic Sea biota further indicates that transport to the sea has dropped but that concentrations have not yet declined, pointing towards a high persistence in the marine environment.
Diclofenac, a widely used painkiller that is water soluble, mainly enters the sea through wastewater treatment plants which have a low removal rate of the drug. Despite good absorption by the human body when ingested, diclofenac is overused, leading to significant excretions reaching sewer systems. Some of the diclofenac in wastewater may also originate from dermal application which has a low absorption rate by the body.
The four reports support the update of the HELCOM Baltic Sea Action Plan (BSAP), HELCOM’s strategic programme of actions for restoring good ecological status of the Baltic marine environment. The BSAP is due to be updated in 2021.
Information from the reports will notably serve to evaluate the efficiency of currently implemented measures under the present BSAP, and for suggesting additional measures needed to improve the Baltic Sea’s state in regard to the reduction of concentrations of hazardous substances.
Marine litter, underwater noise and chemical contamination of the marine environment were prominently featured on the agenda of the PRESSURE 11-2019 meeting held in Brussels from 22 to 25 October. The meeting was further complemented by two workshops on hazardous substances and marine litter.
“Marine litter is posing a threat to the Baltic Sea’s biodiversity, so it needs to be solved rapidly,” said Dmitry Frank-Kamenetsky, adding that the issue is being successfully addressed through the implementation of the HELCOM Regional Action Plan on Marine Litter.
In Brussels, progress in the implementation of the plan was particularly acknowledged, and further steps were outlined to deal with derelict fishing gear, to improve stormwater management – crucial in addressing microplastics – and to address expanded polystyrene, one of the top litter items found on the entire Baltic Sea coast.
“Since rivers are significant pathways bringing litter and all sorts of substances to the sea, we also need to look upstream and beyond our shores,” said Frank-Kamenetsky, echoing the common view that further cooperation with river basin management authorities needs to be strengthened to address the marine litter issue.
Furthermore, a new draft of the action plan to mitigate manmade underwater noise was presented at PRESSURE 11-2019. “Although the document is still in a drafting phase, it is a first step in the HELCOM process that may eventually lead to concrete measures to ease the effects of man-made sound and noise on aquatic wildlife,” said Frank-Kamenetsky.
Marine mammals and certain type of fish are particularly affected by underwater noise since they rely heavily on hearing throughout their entire life, such as for geolocation, communicating, feeding or mating.
Chemical contamination of the marine environment was another of the key environmental pressures emphasized at PRESSURE 11-2019, highlighting the vast variety of chemicals currently used in industries and households. New products are continuously flooding the markets, and their effects on the marine environment aren’t always clear.
At the meeting, the HELCOM members therefore welcomed the progress on a knowledge base on micropollutants including pharmaceuticals currently in development, and concluded that the HELCOM framework on hazardous substances might require a significant revision to be able to respond to threats posed by these new chemicals.
Moreover, a new assessment of the input of nutrients to the Baltic sea was presented at PRESSURE 11-2019, illustrating the substantial reduction of nutrient inputs since the reference period. The assessment shows that inputs of nitrogen and phosphorus to the Baltic Sea were reduced by 14 and 24 percent respectively since early 2000.
The highest nitrogen input reduction in this period was observed in the Danish Straits (24 percent) and Kattegat (21 percent), while the highest reduction of phosphorus load was noted in the Gulf of Finland (51 percent) and Baltic Proper (22 percent).
The reduction indicates the joint effort of all HELCOM countries to reduce input of nutrients and commitment to abate eutrophication – the major threat for the Baltic Sea. But the assessment shows that the nutrient input targets for the whole Baltic Sea have not yet achieved.
PRESSURE 11-2019, the “11th Meeting of the Working Group on Reduction of Pressures from the Baltic Sea Catchment Area (HELCOM Pressure Group),” was hosted by the European Commission in Brussels.
The HELCOM Pressure Group seeks to provide the necessary technical background to the work on inputs of nutrients and hazardous substances from both diffuse and point sources on land, including follow-up of the implementation of the HELCOM nutrient reduction scheme. It currently also works on emerging challenges such as underwater noise and plastic pollution.
Two former pollution sites located in the Kaliningrad region in Russia were approved for removal from the HELCOM Hot Spot list by the HELCOM Heads of Delegation, one of the decision-making instances, during their last meeting held in Helsinki from 18 to 19 June 2019 – the 56th Meeting of the HELCOM Heads of Delegation(HOD 56-2019).
The first site to be removed from the list is the Kaliningrad wastewater treatment plant, or HELCOM Hot Spot No. 67. Newly constructed in December 2015, the upgraded wastewater treatment plant of Kaliningrad started to be fully operational by the end of 2016, with all of Kaliningrad’s sewage water redirected to the new plant.
“The new treatment plant fully complies with the HELCOM recommendation on municipal wastewater,” said Natalia Tretiakova, the Russian Head of Delegation to HELCOM. With its population of 574,000 people, the city of Kaliningrad was the biggest source of untreated wastewater input to the Baltic Sea in the Kaliningrad region until the launch of the new plant.
In the same meeting, the deletion of HELCOM Hot Spot No. 69, the Cepruss pulp and paper mill in Kaliningrad, Russia, was also approved. Cepruss was added to the list because of significant discharges of pollutants stemming from the processing of pulp and paper into the Pregolya river. The site ceased all production in 2011.
Since 1992, HELCOM maintains a list of significant pollution sites around the Baltic Sea – the HELCOM Hot Spots. Today, about three quarters of all hotspots have been cleaned up. The most notorious Hot Spots are point sources such as municipal facilities and industrial plants, but the programme also covers pollution from agricultural areas and rural settlements, and sensitive areas such as coastal lagoons and wetlands where special environmental measures are needed.
Furthermore, in Helsinki, the update of the Baltic Sea Action Plan(BSAP) featured prominently on the meeting’s agenda, with the Heads of Delegation moving forward on the structure of the updated plan. Maintaining the same level of ambition for the updated BSAP was a particular point of emphasis.
HOD 56-2019 also adopted the revised HELCOM Recommendation 28E/13 on Introducing Economic Incentives as a Complement to Existing Regulations to Reduce Emissions from Ships. Where implemented already, economic instruments have proven to increase environmentally friendly shipping practices beyond the existing legislation. Some of these methods include differentiated port fees and fairway dues, differentiated taxation of marine fuels and on-shore power supply.
The creation of an expert network on marine protected areas (MPAs) – HELCOM Network for Marine Protected Area Management (EN MPA MANET) – was also approved during the meeting in Helsinki. The new network will respond to the need for a concerted approach on the management of MPAs across the Baltic Sea region, especially for transboundary areas. It will provide expert input to HELCOM work related to MPA management, as well as conservation of habitats, biotopes and species in general, the relevant Ecological Objectives in the Baltic Sea Action Plan.
Bidding farewell to the current HELCOM Executive Secretary, Ms Monika Stankiewicz, who is due to leave the organization in July 2019, the Heads of Delegation singled out her excellent performance and acknowledged her instrumental role in lifting HELCOM to where it is today.
Stankiewicz has been at the HELCOM Secretariat since 2006 when she started as Professional Secretary for Maritime Affairs. She assumed the position of Executive Secretary in 2012 until 2019. She will be succeeded by Mr Rüdiger Strempel.
Nutrient reduction is central point of discussion at PRESSURE 10-2019.Kaliningrad city gets recommendation to be removed from HELCOM hotspot list because of reduction of nutrient inputs.
Expanded polystyrene will receive special attention from HELCOM. Nutrients, stormwater and microlitter were headlining the Tenth Meeting of HELCOM Working Group on Reduction of Pressures from the Baltic Sea Catchment Area (PRESSURE 10-2019) that was held in Tallinn from 9 to 12 April 2019.
High nutrient load from land-based sources – the central discussion point of PRESSURE 10-2019 – remains one of the largest pressures on the Baltic Sea, leading to eutrophication that causes growth of toxic algae and oxygen depletion.
At PRESSURE 10-2019, the delegates proposed to advance regional policy instruments to inspire additional efforts for minimizing this environmental pressure on the marine ecosystem. The proposals include further development of the and its follow up system, and of the HELCOM nutrient recycling strategy. will be key for curbing eutrophication.
Specifically, attention was directed to the effectiveness of implemented or planned measures to reduce nutrient load on the marine environment, as well as their sufficiency to achieve targets set by the Baltic Sea Action Plan. The delegates also agreed to intensify cooperation on nutrient reduction with river basin management authorities, for instance through workshops.
The alignment of nutrient reduction targets for river basins with the ones set for the marine environment was also foreseen as a tool for targeted measures to effectively decrease the nutrient load in the Baltic Sea.
The HELCOM delegates also welcomed the first official results from the newly commissioned waste water treatment plant in Kaliningrad. Two years of constant environmental monitoring showed that nutrient input to the Baltic Sea from the city of Kaliningrad was reduced by about 200 tonnes of phosphorus and 1200 tonnes of nitrogen annually.
Because of the improvement, the delegates of PRESSURE 10-2019 recommended to remove the Kaliningrad municipality from the HELCOM Hotspot list where it is currently listed.
“The HELCOM list of hot spots now stands a good chance to become shorter,” said Dmitry Frank-Kamenetsky, the Professional Secretary handling nutrient related issues at HELCOM. On stormwater, PRESSURE 10-2019 agreed to revise the related HELCOM Recommendation and to open it to reflections on microlitter and resilience to climate change.
Further on marine litter, Denmark presented a comprehensive study on expanded polystyrene (EPS) which is a widespread litter item found in the Baltic Sea. The delegates subsequently agreed to start work on regional measures to deal with EPS litter.
On underwater noise, PRESSURE 10-2019 agreed on the structure of the Action Plan on Underwater Noise which will be elaborated by 2020. The plan will specifically look into keeping marine habitats undisturbed by underwater noise.PRESSURE 10-2019 was hosted by the Ministry of the Environment of Estonia in Tallinn, and was chaired by Lars Sonesten, Chair of the .
Nutrients, stormwater and microlitter were headlining the Tenth Meeting of HELCOM Working Group on Reduction of Pressures from the Baltic Sea Catchment Area (PRESSURE 10-2019) that was held in Tallinn from 9 to 12 April 2019.
HELCOM recently published two reports on hazardous substances and inputs of nutrients through the seven biggest rivers in the Baltic Sea region. The reports show the results from the project that carries out pollution load assessment of the Baltic Sea from waterborne, diffuse and natural sources.”Both reports provide valuable information for assessing progress in reaching the HELCOM (BSAP) reduction targets for hazardous substances and nutrients,” said Dmitry Frank-Kamenetsky, the HELCOM Professional Secretary handling matters related to hazardous substances and nutrient inputs. The first report, , presents the findings on heavy metals cadmium, mercury and lead, as well as atmospheric deposition of selected organic pollutants, pharmaceutical residues, and persistent organic pollutants – chemicals that can’t biodegrade or take a long time to do so.According to the report, the inputs of heavy metals and organic pollutants are on the decline overall. On the other hand, pharmaceuticals and persistent organic pollutants are already causing apprehension, despite having been added only recently to the assessment. released to the Baltic Sea through wastewater treatment could amount to 1800 tonnes per year. Some of these residues have already been detected in various compounds of the Baltic Sea ecosystem.Nonylphenols, octylphenols and PFOS – persistent organic pollutants which are mainly used for treating metals and textile products, and as flame retardants – were particularly identified as of high concern by the HELCOM countries. Some of these chemicals can disrupt the hormonal balance in living organisms. The second report published by HELCOM, , highlights the inputs of nitrogen and phosphorous to the sea from the Daugava, Gota, Nemunas, Neva, Oder, Tornio and Vistula. These rivers cover about half of the Baltic Sea catchment area. 55 million people inhabit this region, leading to high man-made, or anthropogenic, pressure. The nutrient loads are highest in the southern catchments, where population is densest and agricultural activity is intense. According to , the riverine inputs of total nitrogen and total phosphorus contribute about 80 percent and over 90 percent to the total input of these nutrients respectively. The report emphasizes the importance of measures in upstream parts of river basins, including transboundary parts, to reduce nutrient loads and achieve the environmental targets set by the .Over-supply of nitrogen and phosphorous remains the lead cause for and the growth of algae in the Baltic Sea.Download the reports: (.pdf) (.pdf)
HELCOM recently published two reports on hazardous substances and inputs of nutrients through the seven biggest rivers in the Baltic Sea region. The reports show the results from the HELCOM Pollution Load Compilation (PLC) project.
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