The international conference “Seaweed for blue economies, biodiversity and ecosystem services - an opportunity at sub-regional level” evolved around the results of the CLIMALG-SN project on 06-07 December at the head-quarter of the Sub-Regional Fisheries Commission (SRFC) in Dakar, Senegal and online.

Scientists from Senegal and the neighbouring countries Mauritania, Gambia, Guinea, Guinea-Bissau and Cabo Verde, regional representatives from the private and public sectors, from marine economy and environment, NGO’s, decision makers, universities and research institutions and international organisations exchanged about the biodiversity and valorisation of seaweed (macroalgae, seavegetables) in the sub-region with seaweed experts from the international SafeSeaweedCoalition, GEOMAR and the IGZ  More information about the conference can be found here.

The sampling campaigns of CIMALG-SN along the Senegalese coast

In May and June 2021, the first major sampling campaign along the coast of Senegal was successfully completed. The inventory of macroalgae at many sites along the Senegalese coast was studied to determine their impact on biodiversity. The team led by Waly Ndiaye (ISRA-CRODT) and Patrice Bremher (IRD-Senegal) collected algal and water samples for DNA and eDNA barcoding, bioassay, and chemical analyses. GEOMAR researchers from Kiel support the Senegalese researchers and students in the analysis of the data.

The second sampling campaign was conducted at the same locations in August and September 2021. Again Waly Ndiaye, Mamie Diop, Ndeye Bousso and Fulgence Diedhiou (ISRA-CRODT) collected many macroalgae samples and took countless photos, which are currently being analysed.

Around Dakar, Mamie Diop and Ndeye Bousso (ISRA-CRODT) have been regularly visiting ten sites of diverse environments since May 2021 to study the seasonality of macroalgae and their biodiversity in relation to pollution and other parameters. In May 2022, this campaign was also successfully completed.

The analyses and evaluations of the samples are in progress.

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CLIMALG- SN || Seaweed for climate change resilient blue economies, biodiversity and ecosystem services in Senegal and West Africa || Project partners

Seaweed resources in Senegal || Project description

CLMALG-SN aims at seaweed habitats and their potential to foster blue growth and to enhance biodiversity and ecosystem services in Senegal and neighbouring countries.

The project will provide a road map to policy makers to encourage both exploitation (cultivation and harvest) of seaweed and preservation of natural seaweeds habitats as a tool for fisheries management and as refuge and habitat for exploited fish. Seaweed aquaculture cannot only be a profitable and sustainable source of income, but also a tool for carbon fixation and for nutrient recovery from over-fertilized coastal waters. Natural and sustainably harvested and cultivated seaweed habitats can stabilize, conserve and restore marine biodiversity and ecosystem services.

CLIMALG-SN will update the current seaweed inventory in Senegal, and assess their influence on biodiversity, interactions with ecological and biogeochemical cycles and bottlenecks for their recent exploitation. Existing knowledge will be gathered, socio-economic interviews and taxonomic identification will be conducted, and use of genomics and metagenomics as novel methodologies, relevant for the identification of seaweeds and the associated species biodiversity, will be introduced.

CLIMALG-SN will close a serious information gap on seaweed habitats, their current inventory in Senegal, their recent exploitation and their influence on biodiversity.

The knowledge will be developed, shared and disseminated in meetings and workshops with interested stakeholders from different domains, which include small-scale fishermen, women associations, potential stakeholders of seaweed production, local and sub-regional fishing commissions, institutions and organisations with an emphasis on policy and decision-making, including both maritime economy and environmental directorates, as well as academic partners and non-governmental organisations.

Overall, the planned activities in CLIMALG-SN directly target the sustainable management and protection of marine and coastal ecosystems through the increase of scientific knowledge and research capacity.  All activities contribute to capacity building of Senegalese direct and indirect partners, at technical, academic and institutional levels and to knowledge about the marine ecosystem, two key components for the socio-economic development. CLIMALG-SN contributes directly to SDG 14 “Life below water” and strongly supports further Sustainable Development Goals (SDGs) strengthening demand-led research for development.

Resources of CLIMALG-SN

  • What is the current status of seaweed biodiversity in Senegal?

    How did sea weed biodiversity change over the last decades?

    How do seaweed habitats influence the local biodiversity, especially fish stocks?

    What is the influence of human activities (e.g. harvesting, local pollution) on seaweed and its associated biodiversity?

    Why could previous seaweed exploitation initiatives not be sustained?

    What is the current interest in the seaweed of local stakeholders?

    How can the seaweed sector be increased in a sustainable manner?

    Which stakeholders can be involved?

    How to maximize the benefits for the local communities under gender consideration?

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