Food availability and the feeding ecology of ichthyofauna of a Ria Formosa (South Portugal) water reservoir

Estuaries ◽  
2003 ◽  
Vol 26 (4) ◽  
pp. 938-948 ◽  
Author(s):  
Sofia Gamito ◽  
Ana Pires ◽  
Cristina Pita ◽  
Karim Erzini
Keyword(s):  
Food Availability ◽  
Feeding Ecology ◽  
Water Reservoir ◽  
Ria Formosa ◽  
South Portugal

Salt marshes adjustment to anthropogenic pressures and sea-level rise

2021 ◽  
Author(s):  
A. Rita Carrasco ◽  
Katerina Kombiadou ◽  
Miguel Amado
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Salt Marshes ◽  
Anthropogenic Pressures ◽  
The Past ◽  
Ria Formosa ◽  
Sediment Loads ◽  
Human Interventions ◽  
South Portugal ◽  
And Sea Level

<p>It is predictable that salt marshes in regions, where sediment loads are high, should be stable against a broader range of relative sea level scenarios than those in sediment-poor systems. Despite extensive theoretical and laboratory studies, additional syntheses of marsh ‘persistence’ indicators under human interventions and accelerated sea-level rise rates are still needed. This study investigates the recent lateral changes occurring in lagoon-type marshes of the Ria Formosa lagoon (south Portugal) in the presence of human interventions and sea-level rise, to identify the major drivers for past marsh evolution and to estimate potential future trends. The conducted analysis assessed the past geomorphological adjustment based on imagery analysis and assessed its potential future adjustment to sea-level rise (~100 years) based on modelled land cover changes (by employing the SLAMM model within two sea-level rise scenarios).</p><p>Salt marshes in the Ria Formosa showed slow lateral growth rates over the last 70 years (<1 mm∙yr<sup>-1</sup>), with localized erosion along the main navigable channels associated with dredging activities. Higher change rates were noted near the inlets, with stronger progradation near the natural inlets of the system, fed by sediment influx pulses. Any potential influence of sea-level increase to an intensification of marsh-edge erosion in the past, could not be distinguished from human-induced pressures in the area. No significant sediment was exchanged between the salt marshes and tidal flats, and no self-organization pattern between them was observed in past. The related analysis showed that landcover changes in the salt marsh areas are likely to be more prominent in the future. The obtained results showed evidence of non-linearity in marsh response to high sea-level rise rates, which could indicate to the presence of critical thresholds and potential negative feedbacks within the system, with significant implications to marsh resilience.</p>

scholarly journals Discerning natural and anthropogenic organic matter inputs to salt marsh sediments of Ria Formosa lagoon (South Portugal)

2020 ◽  
Vol 27 (23) ◽  
pp. 28962-28985
Author(s):  
Mukesh Kumar ◽  
Tomasz Boski ◽  
Francisco J. González-Vila ◽  
José Mª de la Rosa ◽  
José A. González-Pérez
Keyword(s):  
Organic Matter ◽  
Salt Marsh ◽  
Ria Formosa ◽  
Marsh Sediments ◽  
Salt Marsh Sediments ◽  
South Portugal

scholarly journals Biogeochemical modelling of Ria Formosa (South Portugal)

Hydrobiologia ◽  
2008 ◽  
Vol 611 (1) ◽  
pp. 115-132 ◽  
Author(s):  
P. Duarte ◽  
B. Azevedo ◽  
M. Guerreiro ◽  
C. Ribeiro ◽  
R. Bandeira ◽  
...  
Keyword(s):  
Ria Formosa ◽  
South Portugal

First record of the Mediterranean parrotfish, Sparisoma cretense in Ria Formosa (south Portugal)

2008 ◽  
Vol 1 ◽  
Author(s):  
David Abecasis ◽  
Luís Bentes ◽  
Joaquim Ribeiro ◽  
Daniel Machado ◽  
Frederico Oliveira ◽  
...  
Keyword(s):  
First Record ◽  
Ria Formosa ◽  
The Mediterranean ◽  
South Portugal

Seahorse (Hippocampinae) population fluctuations in the Ria Formosa Lagoon, south Portugal

2015 ◽  
Vol 87 (3) ◽  
pp. 679-690 ◽  
Author(s):  
M. Correia ◽  
I. R. Caldwell ◽  
H. J. Koldewey ◽  
J. P. Andrade ◽  
J. Palma
Keyword(s):  
Population Fluctuations ◽  
Ria Formosa ◽  
South Portugal
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