Factors controlling spatial variability in ammonium release within an estuarine bay (Alfacs Bay, Ebro Delta, NW Mediterranean)

1992 ◽  
pp. 519-525
Author(s):  
M. Vidal ◽  
J. A. Morguí ◽  
M. Latasa ◽  
J. Romero ◽  
J. Camp
Keyword(s):  
Spatial Variability ◽  
Ebro Delta ◽  
Nw Mediterranean

Factors controlling spatial variability in ammonium release within an estuarine bay (Alfacs Bay, Ebro Delta, NW Mediterranean)

Hydrobiologia ◽  
1992 ◽  
Vol 235-236 (1) ◽  
pp. 519-525 ◽  
Author(s):  
M. Vidal ◽  
Vidal Morgu� ◽  
M. Latasa ◽  
J. Romero ◽  
J. Camp
Keyword(s):  
Spatial Variability ◽  
Ebro Delta ◽  
Nw Mediterranean

scholarly journals First Results of Phytoplankton Spatial Dynamics in Two NW-Mediterranean Bays from Chlorophyll-a Estimates Using Sentinel 2: Potential Implications for Aquaculture

2019 ◽  
Vol 11 (15) ◽  
pp. 1756 ◽  
Author(s):  
Soriano-González ◽  
Angelats ◽  
Fernández-Tejedor ◽  
Diogene ◽  
Alcaraz
Keyword(s):  
Chlorophyll A ◽  
Spatial Dynamics ◽  
Ebro Delta ◽  
Band Ratio ◽  
Environmental Forcing ◽  
Shellfish Farming ◽  
First Results ◽  
Nw Mediterranean ◽  
Sentinel 2A ◽  
Sentinel 2

Shellfish aquaculture has a major socioeconomic impact on coastal areas, thus it is necessary to develop support tools for its management. In this sense, phytoplankton monitoring is crucial, as it is the main source of food for shellfish farming. The aim of this study was to assess the applicability of Sentinel 2 multispectral imagery (MSI) to monitor the phytoplankton biomass at Ebro Delta bays and to assess its potential as a tool for shellfish management. In situ chlorophyll-a data from Ebro Delta bays (NE Spain) were coupled with several band combination and band ratio spectral indices derived from Sentinel 2A levels 1C and 2A for time-series mapping. The best results (AIC = 72.17, APD < 10%, and MAE < 0.7 mg/m3) were obtained with a simple blue-to-green ratio applied over Rayleigh corrected images. Sentinel 2–derived maps provided coverage of the farm sites at both bays allowing relating the spatiotemporal distribution of phytoplankton with the environmental forcing under different states of the bays. The applied methodology will be further improved but the results show the potential of using Sentinel 2 MSI imagery as a tool for assessing phytoplankton spatiotemporal dynamics and to encourage better future practices in the management of the aquaculture in Ebro Delta bays.

scholarly journals Wind-Driven Hydrodynamics in the Shallow, Micro-Tidal Estuary at the Fangar Bay (Ebro Delta, NW Mediterranean Sea)

2020 ◽  
Vol 10 (19) ◽  
pp. 6952
Author(s):  
Marta F-Pedrera Balsells ◽  
Manel Grifoll ◽  
Manuel Espino ◽  
Pablo Cerralbo ◽  
Agustín Sánchez-Arcilla
Keyword(s):  
Numerical Experiments ◽  
Field Data ◽  
Three Dimensional ◽  
Estuarine Circulation ◽  
Water Circulation ◽  
Ebro Delta ◽  
Small Scale ◽  
Strong Wind ◽  
Axially Symmetric ◽  
Nw Mediterranean

This article investigates water circulation in small-scale (~10 km2), shallow (less than 4 m) and micro-tidal estuaries. The research characterizes the hydrodynamic wind response in these domains using field data from Fangar Bay (Ebro Delta) jointly with three-dimensional numerical experiments in an idealized domain. During calm periods, field data in Fangar Bay show complex water circulation in the inner part of the estuary owing to its shallow depths and positive estuarine circulation in the mouth. Numerical experiments are conducted to investigate wind-induced water circulation due to laterally varying bathymetry. For intense up-bay wind conditions (wind intensities greater than 9 m·s−1), an axially symmetric transverse structure occurs with outflow in the central channel axis and inflow in the lateral shallow areas. These numerical results explain the water circulation observed in Fangar Bay during strong wind episodes, highlighting the role of the bathymetry in a small-scale environment. During these episodes, the water column tends to homogenize rapidly in Fangar Bay, breaking the stratification and disrupting estuarine circulation, consistent with other observations in similar domains.

scholarly journals Pseudo-nitzschia spp. (Bacillariophyceae) and dissolved organic matter (DOM) dynamics in the Ebro Delta (Alfacs Bay, NW Mediterranean Sea)

2009 ◽  
Vol 83 (4) ◽  
pp. 539-549 ◽  
Author(s):  
Sofia Loureiro ◽  
Esther Garcés ◽  
Margarita Fernández-Tejedor ◽  
Dolors Vaqué ◽  
Jordi Camp
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Mediterranean Sea ◽  
Ebro Delta ◽  
Nw Mediterranean ◽  
Nw Mediterranean Sea

scholarly journals LC-MS/MS Detection of Karlotoxins Reveals New Variants in Strains of the Marine Dinoflagellate Karlodinium veneficum from the Ebro Delta (NW Mediterranean)

Marine Drugs ◽  
2017 ◽  
Vol 15 (12) ◽  
pp. 391 ◽  
Author(s):  
Bernd Krock ◽  
Julia Busch ◽  
Urban Tillmann ◽  
Francisco García-Camacho ◽  
Asterio Sánchez-Mirón ◽  
...  
Keyword(s):  
Ebro Delta ◽  
Marine Dinoflagellate ◽  
Ms Detection ◽  
Karlodinium Veneficum ◽  
Nw Mediterranean

Wind waves off the Ebro Delta, NW Mediterranean

1993 ◽  
Vol 4 (2-3) ◽  
pp. 235-262 ◽  
Author(s):  
M.A. García ◽  
A. Sánchez-Arcilla ◽  
J.P. Sierra ◽  
J. Sospedra ◽  
J. Gómez
Keyword(s):  
Wind Waves ◽  
Ebro Delta ◽  
Nw Mediterranean

Short- and medium-term grain size changes in deltaic beaches (Ebro Delta, NW Mediterranean)

1996 ◽  
Vol 101 (1-2) ◽  
pp. 55-67 ◽  
Author(s):  
Jorge Guillén ◽  
Albert Palanques
Keyword(s):  
Grain Size ◽  
Ebro Delta ◽  
Medium Term ◽  
Nw Mediterranean
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