New research on Ulva lacinulata highlights adaptability and innovation potential for the blue bioeconomy

A recent scientific publication in Frontiers in Marine Science provides new insights into the remarkable adaptability of Ulva lacinulata, a green macroalga widely distributed across Mediterranean coastal ecosystems. The study, carried out by researchers from the Fisheries Research Institute of E- LGO-DIMITRA— partner in the NOVAFOODIES project—demonstrates how this species can thrive in dynamic and often challenging marine environments, strengthening its relevance for sustainable food systems.

The research focuses on populations in Thessaloniki Bay (Greece), an area characterised by eutrophic waters and strong seasonal variability. Results show that Ulva lacinulata can effectively adjust to fluctuations in temperature, salinity, light, and nutrient availability, thanks to its high physiological plasticity. This adaptability allows the species to survive and remain productive throughout the year, even under environmental stress.

A key finding of the study is that Ulva lacinulata prioritises maintaining a stable and efficient photosynthetic system rather than continuous biomass growth. This “decoupling” of photosynthesis and growth enables the algae to cope with extreme weather events such as heatwaves, heavy rainfall, and seasonal temperature changes. The species maintains a high photosynthetic efficiency—close to optimal levels—indicating a robust and resilient physiological structure even under less favourable conditions.

Growth patterns observed in the study follow a typical seasonal cycle, with biomass accumulation beginning in winter or early spring and peaking in late spring or early summer. This trend is closely linked to nutrient availability, particularly nitrogen, which plays a crucial role in supporting rapid growth during favourable periods. The findings confirm that nutrient-rich environments, when properly managed, can support sustainable macroalgae production.

Beyond its ecological relevance, Ulva lacinulata shows strong potential for applications in sustainable aquaculture and the blue bioeconomy. Its ability to adapt to varying environmental conditions makes it a promising candidate for biomass production, nutrient recycling, and innovative food and feed solutions. The species’ resilience also highlights its suitability for climate-smart cultivation systems, an increasingly important factor in the transition towards more sustainable food production models.

These findings are closely aligned with the objectives of the NOVAFOODIES project, which aims to unlock the potential of aquatic resources for safe, sustainable, and innovative food systems. By advancing scientific knowledge on key species such as Ulva lacinulata, and through the contributions of partners like ELGO-DIMITRA, NOVAFOODIES supports the development of resilient value chains and promotes the integration of macroalgae into future food strategies.

Download the full document HERE.