RT journal article T1 Two bloom-forming species of Ulva (Chlorophyta) show different responses to seawater temperature and no antagonistic interaction A1 Bermejo Lacida, Ricardo A1 Galindo Ponce, Maria A1 Golden, Nessa A1 Linderhoff, Charlene A1 Heesch, Svenja A1 Hernández Carrero, Ignacio A1 Morrison, Liam A2 Biología K1 climate change K1 green tides K1 photoperiod K1 temperature K1 Ulva compressa K1 Ulva lacinulata AB The generalized use of molecular identification tools indicated that multispecific green tides are more common than previously thought. Temporal successions between bloom-forming species on a seasonal basis were also revealed in different cold temperate estuaries, suggesting a key role of photoperiod and temperature controlling bloom development and composition. According to the Intergovernmental Panel on Climate Change, water temperatures are predicted to increase around 4°C by 2100 in Ireland, especially during late spring coinciding with early green tide development. Considering current and predicted temperatures, and photoperiods during bloom development, different eco-physiological experiments were developed. These experiments indicated that the growth of Ulva lacinulata was controlled by temperature, while U. compressa was unresponsive to the photoperiod and temperatures assayed. Considering a scenario of global warming for Irish waters, an earlier development of bloom is expected in the case of U. lacinulata. This could have significant consequences for biomass balance in Irish estuaries and the maximum accumulated biomass during peak bloom. The observed seasonal patterns and experiments also indicated that U. compressa may facilitate U. lacinulata development. When both species were co-cultivated, the culture performance showed intermediate responses to experimental treatments in comparison with monospecific cultures of both species. PB Wiley SN 0022-3646 YR 2022 FD 2022-11-12 LK http://hdl.handle.net/10498/29705 UL http://hdl.handle.net/10498/29705 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 14-nov-2026