Browsing by Author "Carvalho, Liliana Faia"
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- Adaptação de técnicas de imunohistologia e de um novo modelo animal ao estudo de infecções por microbactériasPublication . Carvalho, Liliana Faia; Dionísio, Lídia; Correia-Neves, Margarida
- Effects of temperature and salinity on nitrate uptake by green macroalgaePublication . Madeira, Hélder Trindade; Aníbal, J.; Carvalho, Liliana Faia; Esteves, E.; Veiga-Pires, C.; Rocha, C.Temperature, salinity and the availability of dissolved inorganic nutrients are amongst the most important abiotic factors driving macroalgae produstions in estuarine and coastal ecosystems.
- Interception of nutrient groundwater drich submarine discharge seepage on European temperate beaches by the acoel flatworm, Symsagittifera roscoffensisPublication . Carvalho, Liliana Faia; Rocha, C.; Fleming, Alexandra; Veiga-Pires, C.; Aníbal, J.Submarine groundwater discharge (SGD) occurs in intertidal areas, representing a largely unquantified source of solute fluxes to adjacent coastal zones, with nitrogen being constantly the keynote chemical of concern. In Olhos de Água SGD is present as groundwater springs or merely sub-aerial runoff. The occurrence of the flatworm Symsagittifera roscoffensis is described for the first time in Olhos de Água in connection to seepage flows. To assess the impact of this symbiotic flatworm on the nitrogen associated to groundwater discharge flow at the beach, nitrate uptake experiments were conducted in laboratory microcosms. Our results show that S. roscoffensis actively uptakes nitrate at different rates depending on light availability, with rates ∼10 times higher than that of its symbiotic microalgae alone. This supports the hypothesis thatS. roscoffensis could be an important in situ nitrate interceptor, potentially playing a biological role on the transformation of groundwater-borne nitrate loads at the land–ocean boundary.
- Mitigation of nitrogen discharge from fish aquaculture effluents using green macroalgaePublication . Aníbal, J.; Madeira, Hélder Trindade; Carvalho, Liliana Faia; Esteves, E.; Veiga-Pires, C.; Rocha, C.Aquaculture effluents are rich in organic and inorganic nitrogen compounds that may support and enhance local primary productivity, eventualy inducing eutrophication conditions that may lead to the development of harmful algae blooms.