RT journal article T1 Ecotype-Specific and Correlated Seasonal Responses of Biomass Production, Non-Structural Carbohydrates, and Fatty Acids in Zostera marina A1 Beca Carretero, Pedro A1 Marín, Clara A1 Azcárate-García, Tomás A1 Cara Ortega, Claudia Leticia A1 Brun Murillo, Fernando Guillermo A1 Stengel, Dagmar B. A2 Biología K1 eco-physiological tool K1 ecological indicator K1 fatty acids K1 Ireland K1 morphometric descriptors K1 non-structural carbohydrates K1 productivity K1 seagrasses K1 seasonality AB Seagrasses, which are marine flowering plants, provide numerous ecological services and goods. Zostera marina is the most widely distributed seagrass in temperate regions of the northern hemisphere, tolerant of a wide range of environmental conditions. This study aimed to (i) examine seasonal trends and correlations between key seagrass traits such as biomass production and biochemical composition, and (ii) compare seasonal adaptation of two ecotypes of Z. marina exposed to similar environmental conditions on the west coast of Ireland. During summer, plants accumulated higher levels of energetic compounds and levels of unsaturated fatty acids (FAs) decreased. Conversely, the opposite trend was observed during colder months. These findings indicate a positive seasonal correlation between the production of non-structural carbohydrates and saturated fatty acids (SFAs), suggesting that seagrasses accumulate and utilize both energetic compounds simultaneously during favorable and unfavorable environmental conditions. The two ecotypes displayed differential seasonal responses by adjusting plant morphology and production, the utilization of energetic reserves, and modulating unsaturation levels of fatty acids in seagrass leaves. These results underscore the correlated seasonal responses of key compounds, capturing ecotype-specific environmental adaptations and ecological strategies, emphasizing the robust utility of these traits as a valuable eco-physiological tool. PB Multidisciplinary Digital Publishing Institute (MDPI) SN 2223-7747 YR 2024 FD 2024 LK http://hdl.handle.net/10498/32670 UL http://hdl.handle.net/10498/32670 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 11-nov-2026