6 documents found, page 1 of 1
Trophic interactions and marine invasions
Chebaane, SaharThis dissertation investigates marine biological invasions, focusing on the trophic interactions between non-indigenous species (NIS) and native predators/foragers. The research, conducted in situ across various locations of the Portuguese coastline, provides insights into the impacts of NIS and their interactions with native predators. The studies within this thesis examine marinas and their adjacent areas, id...
Exploring foraging preference of local fish species towards non-indigenous foul...
Chebaane, Sahar; Pais, Miguel Pessanha; Engelen, Aschwin; Ramalhosa, Patrício; Silva, Rodrigo; Gizzi, Francesca; Canning-Clode, JoãoNon-indigenous species (NIS) spread from marinas to natural environments is influenced by niche availability, habitat suitability, and local biotic resistance. This study explores the effect of indigenous fish feeding behaviour on NIS proliferation using fouling communities, pre-grown on settlement plates, as two distinct, representative models: one from NIS-rich marinas and the other from areas outside marinas...
Evaluating fish foraging behaviour on non-indigenous Asparagopsis taxiformis us...
Chebaane, Sahar; Pais, Miguel Pessanha; Silva, Rodrigo; Gizzi, Francesca; Triay-Portella, Raül; Florido, Marta; Monteiro, João GamaThe proliferation of pest and invasive marine macroalgae threatens coastal ecosystems, with biotic interactions, including direct effects such as grazing and indirect effects such as the trophic cascades, where one species indirectly affects another through its interactions with a third species, play a critical role in determining the resistance of local communities to these invasions. This study examines the f...
Citizen science and expert judgement: A cost-efficient combination to monitor a...
Parretti, Paola; Monteiro, João Gama; Gizzi, Francesca; Martinez-Escauriaza, Roi; Alves, Filipe; Chebaane, Sahar; Almeida, Silvia; Pais, Miguel PessanhaMapping the distribution and evaluating the impacts of marine non-indigenous species (NIS) are two fundamental tasks for management purposes, yet they are often time consuming and expensive. This case study focuses on the NIS gilthead seabream Sparus aurata escaped from offshore farms in Madeira Island in order to test an innovative, cost-efficient combined approach to risk assessment and georeferenced dispersa...
From plates to baits: using a remote video foraging system to study the impact ...
Chebaane, Sahar; Canning-Clode, João; Ramalhosa, Patrício; Belz, Janina; Castro, Nuno; Órfão, Inês; Sempere-Valverde, Juan; Engelen, AschwinMarinas are a gateway for the introduction and establishment of non-indigenous species (NIS). In these habitats, competition and predation are crucial determinants for NIS establishment and invasiveness. However, fish trophic preferences and biotic effects inside marinas are poorly known. This study proposes a novel method that combines the deployment of settlement plates to recruit different assemblages, follo...
A new signal of tropicalization in the Northeast Atlantic: the spread of the sp...
Castro, Nuno; Schäfer, Susanne; Parretti, Paola; Monteiro, João Gama; Gizzi, Francesca; Chebaane, Sahar; Almada, Emanuel; Henriques, FilipeCurrent trends in the global climate facilitate the displacement of numerous marine species from their native distribution ranges to higher latitudes when facing warming conditions. In this work, we analyzed occurrences of a circumtropical reef fish, the spotfin burrfish, Chilomycterus reticulatus (Linnaeus, 1958), in the Madeira Archipelago (NE Atlantic) between 1898 and 2021. In addition to available data sou...