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REMEDIOS-3. Strategies for the development of restorative aquaculture of the Mar Menor oyster in the context of climate change.

Pleamar program

RemediOS-3 is part of the Mar Menor Flat Oyster Recovery Initiative and aims to give continuity to the results obtained in RemediOS-2, focusing on the monitoring of the bottom reef and flat oyster column until at least one annual cycle is completed and, on the other hand, to assess the future of the initiative in a climate change scenario. focusing on the effect of high temperatures.

The project will continue the work already started on environmental education, especially with oyster gardening, which is having a great acceptance. The governance study will continue through a field study in the Mar Menor region. Actions to include women in oyster aquaculture will include training workshops on restorative oyster farming.

At the hatchery level, a study of its reproductive process outside the natural season will be carried out, using conditioning techniques, as well as the search and validation of molecular markers of adaptation to high temperatures.

The following collaborating entities act: San Pedro Fishermen’s Association, I.E.S Manuel Tárraga Escribano, San Pedro del Pinatar, UMU Good Governance and Public Integrity Transfer Group and NOWA, Network of Women in Aquaculture.

Line of action:

Marine ecosystems

Status:

En ejecución

Location

Region of Murcia

Research line

Axis 2. Protection of the Marine Environment

Execution date:

2026

End date:

2027

Project web page:

https://www.programapleamar.es/proyectos/remedios-3-estrategias-para-el-desarrollo-de-la-acuicultura-restaurativa-de-la-ostra-del

The general objective of the project is to evaluate the effect of temperature on restoration and bioextraction of nutrients with the native oyster, Ostrea edulis in the Mar Menor lagoon.

Specific objectives:

OE0. Communication objectives.
1. To make the project and its results known to society.
2. Continue to spread the message to public opinion of the benefits of the recovery of impacted ecosystems through nature-based solutions.
3. To make bivalve-based restoration known to local, regional and national administrations.

OE1. Scientific-technical objectives-1. Follow-up of pilots initiated in RemediOS-2.
1. Monitor the evolution of the bottom reef based on the universal metrics established by NORA.
2. Proof of concept on the use of robotics in oyster reef monitoring.
3. Monitor oyster growth and survival in the farming lines.
4. Quantify nitrogen extraction through the pilot in column (bioextraction).
5. Determine the levels of contaminants covered by the European Food Regulation (2023/915).

OE2. Scientific-technical objectives 2. Adaptations to climate change.
1. To identify genetic and/or molecular markers of adaptation to high temperatures in the different batches of RemediOS oysters (R22, R24 and R25).
2. Expose R25 oysters to a thermal gradient (hatchery, Mar Menor, salt channel) during the summer of 2026.
3. To study the gametogenic cycle of RemediOS oysters outside the calendar season using conditioning techniques (photoperiod, temperature and feeding).
4. Seed production (R26-autumn and R27-spring) from broodstock resilient to extreme temperatures.

OE3. Environmental education objectives.
1. Raise public awareness of the impact of human activities on coastal ecosystems, promoting greater environmental responsibility.
2. To publicize the ecosystem services provided by oysters.
3. To encourage the active participation of citizens in the restoration and conservation of degraded coastal ecosystems.
4. Use of art as a tool for environmental awareness.

OE4. Objectives for the inclusion of women in oyster aquaculture.
1. Publicize bivalve aquaculture activities led by women.
2. Contact women’s aquaculture organizations.
3. To give technical training workshops on oyster aquaculture to the wives of the fishermen of the Mar Menor.
4. To give business training workshops and organisational models to the women of the fishermen of the Mar Menor.

OE5. Governance and transfer objectives.
1. Identify the main actors involved in the environmental management of the Mar Menor (local and regional administrations, economic actors, scientific entities and social organizations) and its region that may be involved in the oyster initiative.
2. To promote the involvement, dialogue and awareness of key actors, through participatory workshops, interviews, deliberative sessions or other activities that allow building a common base of knowledge around the value of the flat oyster in the ecological restoration of the Mar Menor.
3. Strengthen the leadership and capacity for action of local governments in the Mar Menor Oyster Initiative (MMOI), promoting inter-municipal collaboration through existing structures such as the Association of Municipalities of Campo de Cartagena and Mar Menor.

Association of Naturalists of the Southeast, ANSE

General Directorate of the Mar Menor, Ministry of the Environment of the Region of Murcia

Estrella Levante Foundation

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REMEDIOS-3. Strategies for the development of restorative aquaculture of the Mar Menor oyster in the context of climate change.