Evolução da fisiografia e ocupação antrópica na área estuarina do rio Mondego e região envolvente (Portugal centro-oeste), desde 1947

Cunha, Pedro P.; Pintó, Josep; Dinis, Jorge

doi:10.14195/1647-7723_4_8

Cited by 14 publications

(10 citation statements)

References 3 publications

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“…During the past three decades, engineering works included several dams, a new river bed, and a parallel water supply channel for agricultural and industrial purposes. These works caused morphological, hydrological and sedimentary modifications in the estuary and river system (Cunha et al 1997, Dinis andCunha 1999). The potential for modifications of coastal habitats by the addition of some of these structures have complex and widespread consequences on coastal environments (Glasby and Connell 1999) with significant impacts in its biological and ecological quality.…”

Section: Discussionmentioning

confidence: 99%

“…It is a relatively inexpensive technique and a well-established source of information within coastal studies (O'Regan 1996, Ekebon and Erkkilä 2003, Mas 2004 and it has been the preferred methodology for identification and mapping of salt marsh and seagrass loss (Klemas et al 1993, Robbins 1997, Udy et al 1999. It is also a useful tool to observe coastal physiographical evolution (Cunha et al 1997, Jiménez et al 1997, Dinis and Cunha 1999. Ekebon and Erkkilä (2003) provide detailed information on application of high altitude aerial photographs for identifying and mapping marine and coastal habitats.…”

mentioning

confidence: 99%

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Anthropogenic effects and salt marsh loss in the Mondego and Mira estuaries (Portugal)

Castro

Freitas

2006

Web Ecol.

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Recent decades have witnessed marked losses of coastal wetlands worldwide, but consistent data on salt marsh area are not available. The main goal of this study was to provide information on two Portuguese estuarine habitats (Mondego and Mira) over a period of four to six decades, and to assess how anthropogenic activities have altered the salt marsh ecosystem. Chronological sequences of aerial photographs covering a period of 54 yr (1947–1998) and 38 yr (1958–1995) for the Mondego and Mira estuaries, respectively, were considered for this study. Long-term changes in the Mondego estuary revealed a clear decline in the salt marsh area during the past six decades due to urban and industrial expansion. In contrast, the Mira estuary salt marshes remained almost unchanged since 1958. This ecosystem is relatively undisturbed by anthropogenic activities, and marsh variation seems to follow natural dynamics rather than being vulnerable to anthropogenic pressure. The sustainable management of salt marshes must be a priority concern to ensure the long-term viability of their ecological, economic and social capital

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Anthropogenic effects and salt marsh loss in the Mondego and Mira estuaries (Portugal)

Castro

Freitas

2006

Web Ecol.

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“…For instance, the shoreline progradation rate ranged from 7 m·year −1 at Buarcos Beach to 25 m·year −1 at the northern jetty for the period 1958-1977 and from 4 to 17 m·year −1 for the period 1977-1982. The shoreline retreat rate at the south coast was about 3.6 m·year −1 for the period 1958-1977 and 8 m·year −1 for the period 1977-1982 [29]. Between 2008 and 2010, the northern jetty was extended by 400 m aiming to reduce the accretion of sediments at the inlet that hinders navigation towards the local harbor [30].…”

Section: Study Areamentioning

confidence: 99%

Assessment of Dredging Scenarios for a Tidal Inlet in a High-Energy Coast

Fernández-Fernández

Ferreira

Silva

et al. 2019

JMSE

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The high energetic wave climate of the North Atlantic Ocean causes important morphological changes at Figueira da Foz coastal system (W Portugal), which is comprised of sandy beaches and the Mondego estuary-inlet. The submerged sandbar at the inlet mouth is highly dynamic inducing short waves shoaling and breaking processes that can entail navigation problems towards the local harbor. Therefore, coastal dredging operations are performed to guarantee safe navigation. Nevertheless, these operations have a limited temporal effectiveness and require a high annual budget to be accomplished. The goal of this research is to seek long-life dredging alternatives using modeling tools (i.e., Delft3D model suite). Delft3D model is used to simulate the morphological evolution of five dredging scenarios during a three-month winter period under three wave climate scenarios. The bed level differences at the dredged area and at the inlet mouth for each scenario are analyzed in comparison with numerical solutions obtained in a reference scenario (i.e., no-dredging). Results highlight morphological changes at the dredged inlet and surrounding areas and their effectiveness in extending the operational lifetime of inlet dredged operations on dredging configuration and wave climate conditions. These findings are the basis for selecting the most suitable dredging scenario to this coastal region under current wave climate conditions.

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“…a). The Mondego cape area is dominated by cliffs at the base of which a rocky platform abrasion develops . The coastline adjacent to the city of Figueira da Foz is characterized by the existence of a beach approximately 500 m long, the result of sediment retention originating from the north jetty of the port of Figueira da Foz.…”

Section: Study Area Characterizationmentioning

confidence: 99%

Multidimensional Approach for Tsunami Vulnerability Assessment: Framing the Territorial Impacts in Two Municipalities in Portugal

2016

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This study presents a new multidimensional methodology for tsunami vulnerability assessment that combines the morphological, structural, social, and tax component of vulnerability. This new approach can be distinguished from previous methodologies that focused primarily on the evaluation of potentially affected buildings and did not use tsunami numerical modeling. The methodology was applied to the Figueira da Foz and Vila do Bispo municipalities in Portugal. For each area, the potential tsunami-inundated areas were calculated considering the 1755 Lisbon tsunami, which is the greatest disaster caused by natural hazards that ever occurred in Portugal. Furthermore, the four components of the vulnerability were calculated to obtain a composite vulnerability index. This methodology enables us to differentiate the two areas in their vulnerability, highlighting the characteristics of the territory components. This methodology can be a starting point for the creation of a local assessment framework at the municipal scale related to tsunami risk. In addition, the methodology is an important support for the different local stakeholders.

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Evolução da fisiografia e ocupação antrópica na área estuarina do rio Mondego e região envolvente (Portugal centro-oeste), desde 1947

Cited by 14 publications

References 3 publications

Anthropogenic effects and salt marsh loss in the Mondego and Mira estuaries (Portugal)

Anthropogenic effects and salt marsh loss in the Mondego and Mira estuaries (Portugal)

Assessment of Dredging Scenarios for a Tidal Inlet in a High-Energy Coast

Multidimensional Approach for Tsunami Vulnerability Assessment: Framing the Territorial Impacts in Two Municipalities in Portugal

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