Enhancing Cross-Border Cooperation for Riverine Plastic Litter Reduction in the Adriatic and Ionian Seas

Programme 2021 - 2027 Interreg VI-B IPA Adriatic-Ionian

Date of latest update: 2026-01-29

Description

Description (EN):

Plastic pollution poses a major threat to the biodiversity of the Mediterranean, particularly in the ADRION region, which stands out as a plastic pollution hotspot. Rivers are the main plastic pathways from land towards the sea, and in the Adriatic-Ionian region, various rivers are shared among countries or flow along countries’ borders. Thus, addressing riverine inputs of marine litter is a common territorial challenge, as also reflected in the recent efforts of the European Commission and the Barcelona Convention towards harmonised approaches. The overarching aim of the TETHYS4ADRION project is to investigate the role of rivers in contributing to marine plastic pollution in the ADRION region and to develop and deploy mitigation strategies aimed at addressing riverine litter inputs. Specifically, the project will focus on: – Facilitating the implementation of harmonised riverine litter monitoring in the ADRION countries by adopting novel and cutting-edge methodologies and conducting coordinated pilot monitoring on selected rivers. – Testing and upscaling solutions that prevent and mitigate riverine litter pollution and restore degraded freshwater habitats from plastic pollution via targeted environmentally-sound actions. – Establishing a comprehensive policy framework and groundwork for developing a sustainable and effective plan to manage and reduce riverine litter in the Adriatic-Ionian region. Ultimately, the project will contribute to minimising the detrimental impact of riverine litter on the marine environment and biodiversity of the ADRION region by fostering cross-border cooperation, promoting multi-stakeholder dialogue and implementing multi-level actions. By building new knowledge and establishing a community of experts in the ADRION region, the project will pave the way for the adoption of a comprehensive and coordinated approach toward cleaner and healthier river ecosystems. The main project outputs include: – Jointly adopted Guidelines for riverine litter monitoring in the Adriatic-Ionian region. A robust monitoring network for collecting riverine litter data will be developed and will employ a harmonised approach to monitor and assess riverine litter in five key pilot river areas: Alfeios (Greece), Buna-Bojana (Albania, Montenegro), Soča-Isonzo (Slovenia, Italy), Neretva (Croatia, Bosnia and Herzegovina) and Reno (Italy). – A Blueprint on how to operationalise best practice solutions to address riverine plastic litter. The blueprint will outline the operational steps for implementing effective solutions to tackle the issue of riverine plastic litter. It will feature a carefully curated selection of best practice solutions that have been collaboratively chosen, tested, and validated by all stakeholders involved in the five pilot river areas. These solutions are designed to prevent and reduce plastic pollution in rivers while simultaneously restoring their health and integrity. – A Regional Roadmap towards zero plastics released at sea in the Adriatic-Ionian region. The Roadmap will serve as a strategic plan tailored for local, national, and regional decision-makers and policy-makers, offering actionable insights to reduce riverine litter inputs. Through a collaborative effort, experts from diverse backgrounds across all countries within the region will actively participate in crafting this roadmap, ensuring comprehensive and inclusive solutions. – A Regional Group of stakeholders committed to eliminating riverine litter inputs. In order to solidify and amplify the project impact and collective momentum, a network of regional stakeholders committed to eliminating riverine litter inputs will be created. The network will involve stakeholders from the ADRION region (and beyond) united in addressing the issue of litter entering waterways. These stakeholders typically include government agencies, non-governmental organisations (NGOs), academic institutions, industry representatives and local communities. Community engagement lies at the heart of the mission of the TETHYS4ADRION project. The project actions will raise public awareness about the impacts of riverine litter through dynamic campaigns, interactive workshops, and comprehensive educational programs tailored for individuals, communities, schools, and businesses. With volunteer programs, cleanup efforts, and river restoration endeavours, the project will empower local communities to take proactive steps toward cleaner rivers, nurturing a strong sense of ownership and responsibility among all members.

Actual Achievements (EN):

During the first period primary attention was devoted to start-up activities at the partner and project level. We consolidated the partnership and set the organization, rules, internal communication and started activities based on the approved AF. Activities were started with an online pre-Kick off meeting (Sept 20) attended by all the partners. We followed with a Kick-off meeting that was held in Ljubljana Oct 16-17. During the meeting special attention was given to program rules, requirements (communication, transparency, record-keeping, reporting) as well as re-emphasising the overall goals of the project. We had a special presentation focused on financial management (given by the Project office of the lead partner) and a presentation on communication covering both programme specific requirements as well as successful examples from other projects. The meeting was a chance for the partners to meet for the first time. The group also reviewed the intervention logic of the project with a view on implementation methods, expected results and impact of the project. An operational plan was made for the start of activities. The partnership fulfilled the formal Programme requirements to complete the Subsidy Agreement and Partnership Agreement. We also established the Project Steering Committee and prepared guidelines for its functioning. We established an on-line platform in Teams for communication, document sharing and archiving. This serves as the document hub for the project. The partnership has also established its web site and project poster which is displayed at all partner premisses. In the period we have not yet established social media presence although it was already discussed by the partnership. Many partners took advantage of the webinars organised by the Programme and LP participated at the Conference in Bled. In terms of project content two activities, A1.1 and A3.1 were started in the period in WPs 1 and 3. The main focus was on A1.1. that serves to establish the basis for further work by describing the five focal rivers of the project. Partners visited the rivers, conducted overviews, collected information on the rivers, their watersheds, environental pressures etc. Field visit were carried out during which partners also started establishing contacts with key local stakeholders (local commuities, technical operators etc.). The activities are directed to contribute to D1.1.1. (Scoping report on main features of pilot rivers...) In parallel preparations were started to develop a database (D1.1.2) in which data on the rivers will be compiled. The key point of the database is to geolocate pollution hot spots, retention areas and sources. The activity is headed by WP1 leader PP2 with the participation of all partners. In A3.1. partners started compiling a list of stakeholders and related projects that will serve as a basis for joint activities and communication and will be included in D3.1.1. (Scoping study on riverine litter...). A number of projects have been identified that have direct synergies with TETHYS4ADRION. A discussion has started on how TETHYS4ADRION could cooperate with them. A key element of communication in the period was to establish links between partners working on the same rivers and with local and regional authorities that will be instrumental in the implementation of the work program and the uptake of project results. Less attention was put on national and international organization/authorities at this early stage of the project implementation. A number of media reports about the project were managed in the period. The intention at this stage was to inform the public of what the EU funded project is doing in their local environment. During the period we had ad-hoc calls and communication centered on specific issues. It was decided that for the future regular monthly on-line meetings will be scheduled. During the last part of the period we started preparations for the 2nd partnership meeting that will be held in Čapljina B&H (PP10). During the 1st period primary attention was devoted to start-up activities. We consolidated the partnership and set the organization, rules, internal communication and started activities based on the approved AF. Activities were started with an online pre-Kick off meeting (Sept 20, 2024) and followed with a Kick-off meeting in Ljubljana (Oct 16-17, 2024). The focus was on program rules, requirements (communication, transparency, record-keeping, reporting) and the overall goals of the project. The partnership completed the Subsidy Agreement and Partnership Agreement. We also established the Project Steering Committee and prepared guidelines for its functioning. In terms of activities, A1.1 and A3.1 were started in the 1st period. The main focus was on A1.1. that serves as a basis for further work by describing the five focal rivers of the project. During the 1st and 2nd period, we worked on enhancing the visibility of the TETHYS4ADRION project, establishing connections with experts, local activists and enthusiasts, as well as with representatives of authorities and government agencies. This was achieved, among other things, through the organization of the national conference (Čapljina, BH), info days (Montenegro, Albania), arranged meetings (e.g. Metković, Croatia; Ston, Croatia; Ulcinj, Montenegro; Soške Elektrarne Nova Gorica, Slovenia, etc.), fieldwork on the pilot rivers (plastic litter monitoring) involving local NGOs, participation of project partners in scientific, recreational and networking events (e.g., Integrated Water Management for Sustainable Tourism Development, Tirana, SAMESEA Online Round Table; World Water Day, Metković, Ladja Marathon, Croatia). In the 2nd project period, in line with the project application, we completed two project activities (A 1.1 and A 2.1) and produced three deliverables (D 1.1.1, D 1.1.2, and D 2.1.1). We finalized the Scoping report on the main features of the pilot rivers and their exposure to plastic litter, as well as the Database with specific data on sources, accumulation, and retention areas of litter in the wider pilot river areas across the seven countries participating in the project. In doing so, we consolidated and systematized information that will serve as a long-term resource for monitoring plastic litter in these countries. This work was carried out by experts and scientists from the institutes (project partners), making it both professional and science-based. We have prepared an inventory containing 41 applied solutions for the prevention and reduction of riverine plastic litter and restoration actions. This collection provides a detailed explanation of each listed solution, highlighting its application, purpose, impact, and relevance, among other aspects. The solutions included have already been tested in the Adriatic-Ionian region and other European regions. By doing so, we have systematized important knowledge on the prevention and reduction of plastic litter, which will facilitate the study of these solutions and contribute to the continuity of their application. On May 13-14, 2025, the TETHYS4ADRION partnership meeting and Steering Committee meeting were held in Čapljina, Bosnia and Herzegovina. During the two-day meeting, a review of achievements and tasks to date was conducted, and a plan for the next steps was developed. Improved methods of communication and coordination within the T4A partnership were agreed upon. We have established project channels on social media (LinkedIn, Instagram, YouTube), where we regularly post content and increase visibility. We also keep the website up to date by regularly publishing contact information, informational materials, and news. LinkedIn: https://www.linkedin.com/company/tethys4adrion/ Instagram: https://www.instagram.com/tethys4adrion/ YouTube: https://www.youtube.com/@TETHYS4ADRION In the 2nd project period, we recorded several media appearances of the TETHYS4ADRION project. Most appearances were noted in Croatian media (local, and national online portals, as well as Croatian Radio Television), reaching audiences across Croatia and/or the Bosnian/Croatian/Serbian/Montenegrin language area. In addition, TETHYS4ADRION or individual project activities were presented in Slovenian media (the radio program of Radio-Television Slovenia), on Bosnian and Herzegovinian online portals, and on the websites and social media channels of project partners. Links to some of them: https://dubrovacki.slobodnadalmacija.hr/dubrovnik/zupanija/dubrovnik/ako-ovo-procitate-odustat-cete-od-ruzne-navike-zbog-koje-u-moru-svake-godine-zavrsi-otpad-tezine-180-000-slonova-1489440 https://youtu.be/drlrv9YfHiM?t=5184 https://ars.rtvslo.si/podkast/podobe-znanja/526/175155269 https://vijesti.hrt.hr/hrvatska/dolina-neretve-okupila-znanstvenike-iz-regije-proucavaju-otpad-u-vodama-12384573 https://bljesak.info/info-vodic/obrazovanje/konferencija-u-capljini-o-smanjenju-rijecnog-plasticnog-otpada/516327

Project outputs: Harmonized implementation of jointly adopted guidelines for riverine litter monitoring in pilot areas in the Adriatic-Ionian region(EN)
Blueprint on how to operationalise best practice solutions to address riverine plastic litter(EN)
Definition of an Action Plan through the Regional Roadmap for a joint strategy towards zero plastics released at Sea in the Adriatic-Ionian region(EN)
Establishment of a regional group of experts on riverine litter in the Adriatic-Ionian region(EN)

Thematic information

Innovation capacity and awareness-raising Waterways, lakes and rivers Waste and pollution

Priority: (VI-B_IPA-A_2) Supporting a greener and climate resilient Adriatic-Ionian region

Priority specific objective: RSO2.7. Enhancing protection and preservation of nature, biodiversity and green infrastructure, including in urban areas, and reducing all forms of pollution

Priority policy objective (Interreg specific objective): PO2 A greener, low-carbon transitioning towards a net zero carbon economy and resilient Europe by promoting clean and fair energy transition, green and blue investment, the circular economy, climate change mitigation and adaptation, risk prevention and management, and sustainable urban mobility

Type of intervention: 079 Nature and biodiversity protection, natural heritage and resources, green and blue infrastructure

Partners (11)

Lead Partner: Kemijski inštitut

PIC (Participant Identification Code): 998756718

Partner’s ID if not PIC: SI33840890

Department: Department for Polymer Chemistry and Technology

Address: Hajdrihova ulica, 1000 Ljubljana, Slovenia

Department address: Hajdrihova ulica, 1000 Ljubljana, Slovenia

Legal status: public

Organisation type: Higher education and research organisations

Website: http://www.ki.si

Total budget: EUR 219 820.00

Partner’s programme co-financing: EUR 186 847.00

Partner’s programme co-financing rate: 85.00%

Partner contribution: EUR 32 973.00

Grad Čapljina

Name: Grad Čapljina

Department: Professional service for local economic development and European integration

PIC (Participant Identification Code): 938433194

Partner’s ID if not PIC: N/A | 4227113340001 | 4227113340001 Personal Identification Number (EN)

Address: Trg kralja Tomislava, 88 300 Čapljina, Bosnia and Herzegovina

Department address: Trg kralja Tomislava, 88 300 Čapljina, Bosnia and Herzegovina

Legal status: public

Organisation type: Local public authority

Website: http://www.capljina.ba

Total budget: EUR 163 187.60

Partner’s programme co-financing: EUR 138 709.46

Partner’s programme co-financing rate: 85.00%

Partner contribution: EUR 24 478.14

Contractors:

Name: Ekološka udruga "Lijepa Naša"
VAT registration or tax identification number: 422715910004
Name: Encos d.o.o. Mostar
VAT registration or tax identification number: 4228077730007
Name: Orbiter G d.o.o.
VAT registration or tax identification number: 4272109370007

Grad Metković

Name: Grad Metković

Department: Department of communal affairs, spatial planning, economy and EU funds

PIC (Participant Identification Code): 907000635

Partner’s ID if not PIC: N/A | HR88843556318 | Tax number (EN)

Address: Stjepana Radića, 20350 Metković, Croatia

Department address: Stjepana Radića, 20350 Metković, Croatia

Legal status: public

Organisation type: Local public authority

Website: https://grad-metkovic.hr/

Total budget: EUR 146 095.00

Partner’s programme co-financing: EUR 124 180.75

Partner’s programme co-financing rate: 85.00%

Partner contribution: EUR 21 914.25

Inštitut za vode Republike Slovenije

Name: Inštitut za vode Republike Slovenije

Department: Sector for the sea

PIC (Participant Identification Code): 997225185

Partner’s ID if not PIC: SI97072842

Address: Einspielerjeva ulica, 1000 Ljubljana, Slovenia

Department address: Einspielerjeva ulica, 1000 Ljubljana, Slovenia

Legal status: public

Organisation type: National public authority

Website: http://www.izvrs.si/?lang=en

Total budget: EUR 142 607.50

Partner’s programme co-financing: EUR 121 216.37

Partner’s programme co-financing rate: 85.00%

Partner contribution: EUR 21 391.13

Institut za biologiju mora, Univerzitet Crne Gore

Name: Institut za biologiju mora, Univerzitet Crne Gore

PIC (Participant Identification Code): 999836328

Partner’s ID if not PIC: 30/31-03951-6 | Tax number: 02016702

Address: Put I Bokeljske brigade , 85330 Kotor, Montenegro

Legal status: public

Organisation type: Higher education and research organisations

Website: https://www.ucg.ac.me/ibm

Total budget: EUR 158 710.00

Partner’s programme co-financing: EUR 134 903.50

Partner’s programme co-financing rate: 85.00%

Partner contribution: EUR 23 806.50

Ελληνικό Κέντρο Θαλασσίων Ερευνών

Name: Ελληνικό Κέντρο Θαλασσίων Ερευνών

PIC (Participant Identification Code): 999577532

Partner’s ID if not PIC: EL999355106

Address: 46.7 km of Athens - Sounio Ave, 19013 Anavissos, Greece

Legal status: public

Organisation type: Higher education and research organisations

Website: https://www.hcmr.gr/en/

Total budget: EUR 145 020.00

Partner’s programme co-financing: EUR 123 267.00

Partner’s programme co-financing rate: 85.00%

Partner contribution: EUR 21 753.00

Μεσογειακό Γραφείο Πληροφόρησης για το Περιβάλλον, τον Πολιτισμό και την Αειφόρο Ανάπτυξη

Name: Μεσογειακό Γραφείο Πληροφόρησης για το Περιβάλλον, τον Πολιτισμό και την Αειφόρο Ανάπτυξη

Department: N/A

PIC (Participant Identification Code): 998675044

Partner’s ID if not PIC: EL097813422

Address: Kyrristou, 10556 Athens, Greece

Department address: Kyrristou, 10556 Athens, Greece

Legal status: public

Organisation type: Interest groups including NGOs

Website: https://mio-ecsde.org/

Total budget: EUR 177 945.00

Partner’s programme co-financing: EUR 151 253.25

Partner’s programme co-financing rate: 85.00%

Partner contribution: EUR 26 691.75

ISPRA-Istituto Superiore per la Protezione e la Ricerca Ambientale

Name: ISPRA-Istituto Superiore per la Protezione e la Ricerca Ambientale

Department: BIO

PIC (Participant Identification Code): 997905349

Partner’s ID if not PIC: 10125211002

Address: Via Vitaliano Brancati, 00144 Roma, Italy

Department address: Via Ca' Fornacetta, 40064 Ozzano dell'Emilia, Italy

Legal status: public

Organisation type: National public authority

Website: https://www.isprambiente.gov.it/

Total budget: EUR 195 045.00

Partner’s programme co-financing: EUR 165 788.25

Partner’s programme co-financing rate: 85.00%

Partner contribution: EUR 29 256.75

Universiteti i Tiranës

Name: Universiteti i Tiranës

Department: Faculty of Natural Sciences/ Chemistry Department

PIC (Participant Identification Code): 998022137

Partner’s ID if not PIC: J61915033D

Address: Sheshi " Nënë Tereza", 1010 Tirana, Albania

Department address: Bulevardi "Zogu I", 1016 Tirana, Albania

Legal status: public

Organisation type: Higher education and research organisations

Website: https://unitir.edu.al/

Total budget: EUR 160 957.00

Partner’s programme co-financing: EUR 136 813.45

Partner’s programme co-financing rate: 85.00%

Partner contribution: EUR 24 143.55

Contractors:

Name: Valmira Kosova
VAT registration or tax identification number: N/A

Institut za oceanografiju i ribarstvo

Name: Institut za oceanografiju i ribarstvo

PIC (Participant Identification Code): 997589032

Partner’s ID if not PIC: HR86235185568 | HR86235185568 | TAX number (EN)

Address: Šetalište Ivana Meštrovića, 21000 Split, Croatia

Legal status: public

Organisation type: Higher education and research organisations

Website: https://galijula.izor.hr/en/

Total budget: EUR 180 805.00

Partner’s programme co-financing: EUR 153 684.25

Partner’s programme co-financing rate: 85.00%

Partner contribution: EUR 27 120.75

Ελληνικο Κεντρο Θαλασσιων Ερευνων (Ελ.Κε.Θ.Ε.)

Name: Ελληνικο Κεντρο Θαλασσιων Ερευνων (Ελ.Κε.Θ.Ε.)

PIC (Participant Identification Code): 999577532

Partner’s ID if not PIC: EL999355106

Address: 46.7 km of Athens - Sounio Ave, 19013 Anavissos, Greece

Legal status: public

Organisation type: Higher education and research organisations

Website: https://www.hcmr.gr/en/

Total budget: EUR 145 020.00

Partner’s programme co-financing: EUR 123 267.00

Partner’s programme co-financing rate: 85.00%

Partner contribution: EUR 21 753.00

Partners map

Partners and Projects info

City of Capljina

Enhancing Cross-Border Cooperation for Riverine Plastic Litter Reduction in the Adriatic and Ionian Seas

Partners and Projects info

City of Metkovic

Enhancing Cross-Border Cooperation for Riverine Plastic Litter Reduction in the Adriatic and Ionian Seas

Partners and Projects info

Institute for Water of the Republic of Slovenia

Enhancing Cross-Border Cooperation for Riverine Plastic Litter Reduction in the Adriatic and Ionian Seas

Partners and Projects info

Institute of Marine Biology, University of Montenegro

Enhancing Cross-Border Cooperation for Riverine Plastic Litter Reduction in the Adriatic and Ionian Seas

Partners and Projects info

ΕΛΛΗΝΙΚΟ ΚΕΝΤΡΟ ΘΑΛΑΣΣΙΩΝ ΕΡΕΥΝΩΝ

Enhancing Cross-Border Cooperation for Riverine Plastic Litter Reduction in the Adriatic and Ionian Seas

Partners and Projects info

Mediterranean Information Office for Environment, Culture and Sustainable Development

Enhancing Cross-Border Cooperation for Riverine Plastic Litter Reduction in the Adriatic and Ionian Seas

Partners and Projects info

ISPRA-Italian Institute for Environmental Protection and Research

Enhancing Cross-Border Cooperation for Riverine Plastic Litter Reduction in the Adriatic and Ionian Seas

Partners and Projects info

University of Tirana

Enhancing Cross-Border Cooperation for Riverine Plastic Litter Reduction in the Adriatic and Ionian Seas

Partners and Projects info

Institute of Oceanography and Fisheries

Enhancing Cross-Border Cooperation for Riverine Plastic Litter Reduction in the Adriatic and Ionian Seas

Partners and Projects info

National Institute of Chemistry

Enhancing Cross-Border Cooperation for Riverine Plastic Litter Reduction in the Adriatic and Ionian Seas

Partners and Projects info

ΕΛΛΗΝΙΚΟ ΚΕΝΤΡΟ ΘΑΛΑΣΣΙΩΝ ΕΡΕΥΝΩΝ (ΕΛ.ΚΕ.Θ.Ε.)

Enhancing Cross-Border Cooperation for Riverine Plastic Litter Reduction in the Adriatic and Ionian Seas

Lead partner

Project partner

Summary

Project name (EN): Enhancing Cross-Border Cooperation for Riverine Plastic Litter Reduction in the Adriatic and Ionian Seas

Project acronym: TETHYS4ADRION

Project ID: IPA-ADRION00176

Project start date: 2024-09-01

Project end date: 2027-08-31

Project status: ongoing

Relevant linked projects:

Developing Mediterranean-specific protocols to protect biodiversity from litter impact at basin and local MPAs scales (MEDSEALITTER) (EN) | Past project funded by Interreg Med. The baseline of macro litter densities in the Adriatic and Ionian Seas was investigated, defining a monitoring protocol in coastal water and the high sea. The project related macrolitter densities from river mouths, coastal areas and the high sea. The outputs of the project will be capitalised in TETHYS4ADRION, and the MEDSEALITTER dataset of macrolitter sightings in the Adrion region will be used and related to data on riverine litter at the river mouths gathered during TETHYS4ADRION. (EN), RIverine and Marine floating macro litter Monitoring and Modelling of Environmental Loading (RIMMEL) (EN) | A past JRC Exploratory Research Project for the monitoring of riverine litter. The project sought to quantify floating macro litter loads through rivers to marine waters by collecting existing data, developing a European observation network, deploying a camera system and using the resulting data to build an inverse statistical model of litter loading based on the characteristics of the catchments. The TETHYS4ADRION project will capitalise upon the RIMMEL’s results and outputs, particularly on the technical report entitled “Riverine Litter Monitoring – Options and Recommendations”, which gives recommendations to Member States on monitoring river litter. (EN), Maris CONservation of CEtaceans and Pelagic sea TUrtles in Med: Managing Actions for their Recovery In Sustainability (CONCEPTU MARIS) (EN) | It is an ongoing LIFE project aiming to assess the conservation status of cetaceans and turtles according to the Habitats Directive. The Adriatic-Ionian region is one of the investigated areas, and monitoring of macrolitter in high sea areas is undertaken as a compute of pressure/threats for the species. Assessing the distribution, densities and relationship of macrolitter from the river mouth to the high sea areas will improve protection and assess the status of the monitored species listed in the Habitats Directive. (EN), Plastic Pirates – Go Europe! (EN) | A science action in which school classes and youth groups collect plastic samples at streams and rivers and document their results. The collected data is then analysed by scientists. In this way, young European citizens contribute to research on the state of European rivers and the degree and possible origins of plastic waste pollution. The action has established protocols to be used by school children. Several TETHYS4DRION partners (e.g., PP6, PP8) are involved in the PLASTIC PIRATES project (reaching more than 130 schools), and synergies will be sought on the citizen science actions, especially for WP1 and WP2. (EN), Plastic Busters MPAs (EN) | The Plastic Busters MPAs project aimed to maintain biodiversity and preserve natural ecosystems in pelagic and coastal MPAs by defining and implementing a harmonised approach against marine litter. The project implemented many testing and replication actions dealing with plastic litter prevention and mitigation. These actions are very much relevant to the scope of work of WP2 of TETHYS4ADRION. Therefore, the project will capitalise upon the synthesis report on showcases on how to prevent and mitigate marine litter and the step-by-step guide for operationalising marine litter prevention and mitigation measures. Most of these activities have been coordinated by PP5 of the TETHYS4ADRION consortium, who will ensure effective capitalisation actions take place. (EN), Cleaning Litter by developing and Applying Innovative Methods in european seas (CLAIM) (EN) | CLAIM has focused on developing innovative cleaning technologies and approaches, targeting the prevention and in situ management of visible and invisible marine litter in the Mediterranean and Baltic Sea. Two innovative technological methods have been developed, a photocatalytic nanocoating device for cleaning microplastics in wastewater treatment plants and a small-scale thermal treatment device for energy recovery from the collected litter on board ships and ports. An innovative floating boom/trap was developed for collecting visible litter from river mouths and a method to measure microlitter on board ships (Ferrybox). The proposed cleaning technologies and approaches prevent litter from entering the sea at two main source points, i.e., wastewater treatment plants and river mouths. The effectiveness of developed devices and methods has been demonstrated under real conditions. PP6 has coordinated the CLAIM project and gained experience in developing and operating the floating trap in front of river mouths. TETHYS4ADRION will take advantage of this experience. (EN), PREP4BLUE: Preparing the Research & Innovation Core for Mission Ocean, Seas & Waters (EN) | Funded by the European Union’s Horizon Europe program, PREP4BLUE is a three-year project (2022-2025) that will set the foundations for co-creating and co-implementing the research and innovation required to achieve Mission Restore our Ocean and Waters by 2030. This Mission seeks to restore the health of our ocean, seas and waters by protecting and restoring marine and freshwater ecosystems and biodiversity, preventing and eliminating pollution, and making the Blue Economy sustainable, carbon neutral and circular. The PREP4BLUE Coordination and Support Action aims to prepare the ground by inspiring, engaging and involving citizens and stakeholders to interlink, leverage and optimise activities among the projects funded under this Mission, and its specific lighthouse areas. The TETHYS4ADRION project partners will reach out to the coordinator of the Horizon 2020 PREP4BLUE (IFREMER) to ensure that effective synergies and cross-fertilisation actions will take place. (EN), BlueMissionMed - ‘Lighthouse coordinating and supporting the innovation ecosystem for a Healthy, Pollution free Mediterranean Sea’ (EN) | The project proposes to set up, structure and empower a MED Lighthouse supporting the development and deployment of transformative innovative technological, social, business and governance solutions for ensuring a 30-50% reduction of pollution of the basin hydrosphere by 2030. It will be an interactive multi-actor digital platform that allows all MED Countries/Regions and stakeholders to access the necessary knowledge and tools. TETHYS4ADRION PP6 is a partner of the project; hence a strong synergy can be achieved for the highest possible stakeholders’ engagement and upscaling. (EN), Derelict Fishing Gear Management System in the Adriatic Region (DEFISHGEAR) (EN) | DeFishGear was an IPA-Adriatic-funded project aiming to facilitate the efforts of policymakers and stakeholders in effectively dealing with the issue of marine litter in the Adriatic-Ionian macroregion. Activities were implemented by a multi-disciplinary team comprising academia, research institutes, national and local authorities and NGOs from all seven countries of the Adriatic-Ionian Seas. Many of these partners are involved in TETHYS4ADRION, i.e., LP1, PP2, PP4, PP5, PP6, PP7, and PP8. DeFishGear successfully delivered harmonised protocols for marine litter monitoring that still represent a reference in the field. It also resulted in improved knowledge of the occurrence, amounts, sources and impacts of marine litter in the Adriatic and Ionian Seas; harmonised marine litter monitoring activities in the region and enhanced collaboration; strengthened and reinforced science-policy interface to support the integration of sound science into policy and decision making in effectively tackling marine litter; joint, coordinated and complementary schemes to manage human activities generating litter and strengthened implementation of relevant policy frameworks. (EN)

Total budget/expenditure: EUR 1 690 192.10

Total EU funding (amount): EUR 1 436 663.28

Total EU funding (co-financing rate): 85.00%

Co-financing sources:

Investments, deliverables, policy contributions

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Deliverables:

Scoping report on the main features of the pilot rivers and their exposure to plastic litter
Database with specific data on sources and accumulation and retention areas
Toolkit for monitoring riverine litter in a harmonised way
Capacity building event
Riverine plastic litter assessment report on the amount, types, sources and impacts of litter
Webinar series on how to monitor riverine litter via participatory science
Assessment report based on the data collected via participatory science actions
National workshop on riverine litter monitoring approaches
Enhancing Awareness and Expertise on Riverine Litter Monitoring Approaches at Universities
Inventory of best practice solutions on riverine plastic litter prevention, reduction & restoration
Guidelines for the operationalisation of best practice solutions to address riverine plastic litter
Synthesis report on the tested solutions to address riverine plastic litter
Community Engagement Blueprint for Positive Change
Unlocking solutions: webinar series on implementing best practices to combat riverine plastic litter
Scoping study on riverine litter in the Adriatic-Ionian region
Establishment of an “Adrion Riverine Litter Expert Group”
Regional Roadmap “Towards Zero plastics released at Sea in the Adriatic-Ionian Region”

Contribution to wider strategies and policies:

EUStrategyAdriaticIonianRegion The EUSAIR acknowledges the urgent issue of riverine litter and its harmful effects on the Adriatic and Ionian Seas. Recognising the importance of sustainable development, EUSAIR considers addressing riverine litter pollution a vital aspect of its environmental objectives. The strategy aims to foster cross-border collaboration among participating countries to combat this challenge effectively. Through promoting cooperation, sharing best practices, and implementing joint initiatives, EUSAIR endeavours to reduce litter inflow into rivers, preventing its entry into the marine environment. By implementing targeted actions and coordinating efforts, EUSAIR assumes a crucial role in preserving the pristine beauty and ecological health of the Adriatic and Ionian Seas for future generations. Within this framework, TETHYS4ADRION will develop a transnational approach to protect and restore rivers from plastic pollution, working towards reducing litter influxes into the Adriatic and Ionian Seas. This initiative is essential for sustainable development in the region and aims to enhance coordination and cooperation between EU countries and accession countries within the region. By focusing on riverine litter pollution and riverine plastic pollution, TETHYS4ADRION serves as a catalyst for achieving these goals.
EuropeanGreenDeal The European Green Deal sets ambitious objectives to drive the transition towards a clean, circular economy, combat climate change, reverse biodiversity loss, and reduce pollution. TETHYS4ADRION, in alignment with these goals, will take concrete actions to address these pressing challenges. One of the project’s key focuses is mobilising research and innovation in riverine litter, riverine plastic litter, and freshwater ecosystems. By leveraging scientific advancements, TETHYS4ADRION aims to deepen our understanding of these issues and develop effective solutions to combat plastic pollution. The project can pave the way for more efficient and impactful interventions by identifying specific areas of concern. Furthermore, TETHYS4ADRION seeks to test and validate solutions for zero plastic pollution while promoting blue and circular economy principles. By exploring innovative approaches, the project aims to contribute to developing effective strategies to tackle plastic pollution and promote sustainable resource management. Preserving and restoring riverine ecosystems is a significant objective of the project. Importantly, TETHYS4ADRION aligns with the Zero Pollution Action Plan of the European Green Deal. It aims to contribute significantly to several targets of the Action Plan, including a 50% reduction in plastic litter at sea and a 30% reduction in microplastics released into the environment. Additionally, the project aims to make strides in reducing total waste generation and residual municipal waste by 50%. Adhering to the zero-pollution action hierarchy, TETHYS4ADRION prioritises pollution prevention at the source as the primary strategy. Where complete prevention is not yet feasible, minimising litter pollution is emphasised. Finally, the project recognises the importance of remediation when pollution has already occurred, taking comprehensive measures to mitigate its impacts.
Other The EU Circular Economy Action Plan, the Plastics Strategy and Single-Use Plastics Directive lie at the heart of the TETHYS4ADRION project. All project actions directly address these policies, considering that riverine plastic pollution will be used to tap upon topics such as zero plastic pollution in riverine systems, the interconnection of land-based and sea-based activities and the source-to-sink decision-making model. TETHYS4ADRION monitoring actions will enhance knowledge of the effects of plastic pollution. In contrast, the prevention, mitigation and restoration actions will provide new insights for a paradigm shift in how we use plastics, thus paving the way for strengthened implementation of the aforementioned policies by promoting best practices and concerted actions.
Other The TETHYS4ADRION project will be crucial in strengthening interactions between the Marine Strategy Framework Directive (MSFD) and the Water Framework Directive (WFD). The project aims to enhance coordination and cooperation between these two important frameworks by aligning the objectives and activities of both directives. Firstly, TETHYS4ADRION will facilitate the exchange of knowledge and expertise between stakeholders involved in implementing the MSFD and WFD. This will create opportunities for dialogue, information sharing, and mutual learning, fostering a better understanding of the interconnections and synergies between the two directives. Secondly, the project will work towards harmonising monitoring and assessment methodologies used under the MSFD and WFD. By adopting a common approach, TETHYS4ADRION will facilitate the integration of data and information, allowing for a more comprehensive understanding of the status and pressures on marine and freshwater ecosystems. This harmonisation will contribute to a more efficient and streamlined implementation process for both directives. Moreover, TETHYS4ADRION will support the development of approaches that address the shared challenges and objectives of the MSFD and WFD. By identifying common priorities and promoting integrated approaches, the project will encourage synergistic measures to achieve the environmental objectives set by both directives. By strengthening interactions between the MSFD and WFD, TETHYS4ADRION aims to contribute to the overall coherence and effectiveness of these directives, leading to improved management, protection, and restoration of marine and freshwater environments in the Adriatic-Ionian region.
Other TETHYS4ADRION project will significantly contribute to the enhanced implementation of the Barcelona Convention Regional Plan for Marine Litter Management in the Mediterranean. The project’s activities align closely with the objectives and principles of the Regional Plan, which aims to address the growing challenge of marine litter in the Mediterranean Sea. Firstly, TETHYS4ADRION will generate valuable data and knowledge on riverine litter and riverine plastic pollution, filling critical gaps in understanding marine litter sources and pathways in the region. This information will provide a solid scientific basis for implementing targeted actions and measures outlined in the Regional Plan. To that end, the project will pilot the riverine litter monitoring guidelines developed within the ECAP process of the Barcelona Convention. Secondly, the project will actively engage stakeholders from various sectors, including governmental bodies, research institutions, NGOs, and industry associations, fostering collaboration and coordination. This multi-stakeholder approach is essential for the effective implementation of the Regional Plan, as it encourages sharing expertise, best practices, and innovative solutions. TETHYS4ADRION will also contribute to capacity building and knowledge transfer by organising training workshops, seminars, and awareness-raising campaigns. These activities will help build the skills and knowledge necessary for implementing the Regional Plan’s strategies and measures at both local and regional levels. Furthermore, the project will serve as a platform for demonstrating and testing innovative approaches and technologies to prevent, mitigate, and remove riverine litter, preventing litter from reaching the sea. By showcasing successful case studies and pilot initiatives, TETHYS4ADRION will provide tangible examples of effective practices that can be replicated and scaled up in line with the Regional Plan’s objectives.

Programme Common Output Indicator:

RCO 084 - Pilot actions developed jointly and implemented in projects, Measurement unit:
RCO 116 - Jointly developed solutions, Measurement unit:
RCO 083 - Strategies and action plans jointly developed, Measurement unit:
RCO 087 - Organisations cooperating across borders, Measurement unit:

Programme Common Result Indicator:

RCR 084 - Organisations cooperating across borders after project completion, Measurement unit:
RCR 104 - Solutions taken up or up-scaled by organisations, Measurement unit:
RCR 079 - Joint strategies and action plans taken up by organisations, Measurement unit:

Project part of European Union Macro-Regional or Sea Basin Strategy: EUSAIR

EUSAIR Priority (Policy) area / Horizontal action:

EUSAIR Degree of compliance:

Information regarding the data in keep.eu on the programme financing this project

Financing programme

2021 - 2027 Interreg VI-B IPA Adriatic-Ionian

Last month that data in keep.eu was retrieved from the Programme's website or received from the Programme

2026-01-29

No. of projects in keep.eu / Total no. of projects (% of projects in keep.eu)

70 / 70 (100%)

No. of project partnerships in keep.eu / Total no. of project partnerships (% of project partnerships in keep.eu)

653 / 653 (100%)

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Enhancing Cross-Border Cooperation for Riverine Plastic Litter Reduction in the Adriatic and Ionian Seas

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Information regarding the data in keep.eu on the programme financing this project

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