23 documents found, page 1 of 3
Understanding planktonic diatoms to inform site selection for shellfish offshor...
Araújo Freitas, Carla Alexandra; Goela, Priscila; Icely, John; Dias Duarte Fragoso, Bruno; de Oliveira Júnior, Luciano; Cristina, Sónia; Newton, AliceSustainable bivalve aquaculture offers a solution to rising food demand. This study aimed to help identify suitable offshore shellfish aquaculture sites in coastal upwelling regions. Here, planktonic diatom abundance, crucial for bivalve growth, is a key success factor. A successful bivalve production area was analysed to understand how diatom dynamics and upwelling influence a suitable location for shellfish o...
Harmful Algal Blooms on the Portuguese coast: Cross-checking events with remote...
Monteiro, Helena; Goela, Priscila; Pinto, Raquel; Cristina, SóniaPhytoplankton plays a vital role in marine ecosystems, serving as a primary food source for a diverse array of organisms, including commercially important bivalves, crustaceans, and fish. However, in some situations, the proliferation of algae can cause serious economic losses for aquaculture, fishing, and tourism and have major environmental and human health impacts. Increases in the occurrence of toxic phytop...
Sources of anthropogenic nutrients and their implications on nutrient chemistry...
Oduor, Nancy A.; Cristina, Sónia; Goela, PriscilaShallow coastal waters receive high anthropogenic nutrients (nitrogen-N and phosphorus-P) from land that can change their nutrient chemistry, algal composition, and food webs with serious effects on marine life, human health, and local livelihoods. Managing anthropogenic nutrient inputs is thus key to ensuring healthy and productive coastal ecosystems. This study conducted a bimonthly sampling for eight months ...
Assessing the effectiveness of management measures in the Ria Formosa coastal l...
Newton, Alice; Cañedo-Argüelles, Miguel; March, David; Goela, Priscila; Cristina, Sónia; Zacarias, Marta; Icely, JohnThe Ria Formosa is an important transitional and coastal lagoon on the south coast of Portugal that provides valuable ecosystem services. The lagoon is a protected area under national and international conventions. There is a great potential for Blue Growth sectors, such as aquaculture and coastal tourism, but these rely on good water quality. European environmental legislation, such as the Water Framework Dire...
Which ocean colour algorithm for MERIS in North West European waters?
Tilstone, Gavin; Mallor-Hoya, Silvana; Gohin, Francis; Belo Couto, André; Sá, Carolina; Goela, Priscila; Cristina, Sónia; Airs, Ruth; Icely, JohnChlorophyll-a (Chl a) is a key parameter for the assessment of water quality in coastal and shelf environments. The availability of satellite ocean colour offers the potential of monitoring these regions at unprecedented spatial and temporal scales, as long as a high level of accuracy can be achieved. To use satellite derived Chl a to monitor these environments, it is imperative that rigorous accuracy assessmen...
Which ocean colour algorithm for MERIS in North West European waters?
Tilstone, Gavin; Mallor-Hoya, Silvana; Gohin, Francis; Couto, Andre Belo; Sa, Carolina; Goela, Priscila; Cristina, Sónia; Airs, Ruth; Icely, JohnChlorophyll-a (Chl a) is a key parameter for the assessment of water quality in coastal and shelf environments. The availability of satellite ocean colour offers the potential of monitoring these regions at unprecedented spatial and temporal scales, as long as a high level of accuracy can be achieved. To use satellite derived Chl a to monitor these environments, it is imperative that rigorous accuracy assessmen...
MERIS phytoplankton time series products from the SW Iberian Peninsula (Sagres)...
Cristina, Sónia; Cordeiro, Clara; Lavender, Samantha; Goela, Priscila; Icely, John; Newton, AliceThe European Space Agency has acquired 10 years of data on the temporal and spatial distribution of phytoplankton biomass from the MEdium Resolution Imaging Spectrometer (MERIS) sensor for ocean color. The phytoplankton biomass was estimated with the MERIS product Algal Pigment Index 1 (API 1). Seasonal-Trend decomposition of time series based on Loess (STL) identified the temporal variability of the dynamical ...
Standard and regional bio-optical algorithms for chlorophyll a estimates in the...
Cristina, Sónia; D'Alimonte, Davide; Goela, Priscila; Kajiyama, Tamito; Icely, John; Moore, Gerald; Fragoso, Bruno; Newton, AliceThis study investigates standard and regional algal pigment index 1 (API1) estimates in the Atlantic off the southwestern Iberian Peninsula. Standard API1 data are those delivered by the Medium Resolution Imaging Spectrometer (MERIS) orbiting sensor. Equivalent quantities are computed by applying a regional inversion scheme using as input both MERIS and in situ remote sensing reflectances (R-rs). Reference data...
Technical note: Algal Pigment Index 2 in the Atlantic off the southwest Iberian...
Goela, Priscila; Cristina, Sónia; Kajiyama, Tamito; Icely, John; Moore, Gerald; Fragoso, Bruno; Newton, AliceIn this study, Algal Pigment Index 2 (API2) is investigated in Sagres, an area located in the Atlantic off the southwestern Iberian Peninsula. Standard results provided by the MEdium Resolution Image Spectrometer (MERIS) ocean colour sensor were compared with alternative data products, determined through a regional inversion scheme, using both MERIS and in situ remote sensing reflectances (R-rs) as input data. ...
Using remote sensing as a support to the implementation of the European Marine ...
Cristina, Sónia; Icely, John; Goela, Priscila; Angel DelValls, Tomás; Newton, AliceThe exclusive economic zones (EEZ) of coastal countries are coming under increasing pressure from various economic sectors such as fishing, aquaculture, shipping and energy production. In Europe, there is a policy to expand the maritime economic sector without damaging the environment by ensuring that these activities comply with legally binding Directives, such as the Marine Strategy Framework Directive (MSFD)...