Ponències/Comunicacions de congressoshttp://hdl.handle.net/2117/1866592024-03-29T00:13:14Z2024-03-29T00:13:14ZThe reconversion of port spaces in the cities and surroundings of the ports in Panama. Statistical study of traffic and its impact, proposal for improvementMartínez de Osés, Francesc XavierLópez Millán, Marilynhttp://hdl.handle.net/2117/3901082023-10-08T02:55:53Z2023-07-04T07:18:24ZThe reconversion of port spaces in the cities and surroundings of the ports in Panama. Statistical study of traffic and its impact, proposal for improvement
Martínez de Osés, Francesc Xavier; López Millán, Marilyn
Panama is a country with a privileged geographical and climatic position, which has allowed it to develop as a center/hub of the Americas. The economy is mainly based on the service sector that includes the Panama Canal, and ports and related activities such as the Colon Free Zone, tourism and airport services, and the International Banking Center. As part of Panama's port logistics development, there is a container transfer system from the Pacific to the Atlantic by road or rail. Currently, the road infrastructure does not have perfect conditions, consequently this does not allow it to generate good logistics performance between the final destinations and the different ports that they serve. For this reason, the ports around the Atlantic and Pacific entrances of the Panama Canal have specialized in the movement of containerized cargo and have developed one of the most recognized transshipment centers in Central America. The objective of the study presented in this initial research proposal is to carry out a bibliographic review. Know the literature that has been written about the main effects on the maritime or access zone, the land or maneuvering zone, and the liaison zones with land transport, which are causing a delay in the mobilization of trucks, in the Panamanian Pacific. The methodology of this work was to carry out an exhaustive bibliographical review of the literature on the effects of waiting times, described by the media, magazines of the maritime sector, and especially how the institutions have generated improvement plans for a development to long-term needs of the sector maritime. The results obtained are the contributions of all those involved in the maritime sector, both the private sector and the state, who seek to improve the process that is currently being developed in the Pacific ports. In conclusion, a series of recommendations of the contributions of the private sector and state institutions are proposed, such as the strengthening of the legal framework, improving the management, exploitation, and promotion of infrastructure, are the goal in which the two sectors agree. Who are analyzing the problems suffered by the infrastructure of the Pacific ports.
2023-07-04T07:18:24ZMartínez de Osés, Francesc XavierLópez Millán, MarilynPanama is a country with a privileged geographical and climatic position, which has allowed it to develop as a center/hub of the Americas. The economy is mainly based on the service sector that includes the Panama Canal, and ports and related activities such as the Colon Free Zone, tourism and airport services, and the International Banking Center. As part of Panama's port logistics development, there is a container transfer system from the Pacific to the Atlantic by road or rail. Currently, the road infrastructure does not have perfect conditions, consequently this does not allow it to generate good logistics performance between the final destinations and the different ports that they serve. For this reason, the ports around the Atlantic and Pacific entrances of the Panama Canal have specialized in the movement of containerized cargo and have developed one of the most recognized transshipment centers in Central America. The objective of the study presented in this initial research proposal is to carry out a bibliographic review. Know the literature that has been written about the main effects on the maritime or access zone, the land or maneuvering zone, and the liaison zones with land transport, which are causing a delay in the mobilization of trucks, in the Panamanian Pacific. The methodology of this work was to carry out an exhaustive bibliographical review of the literature on the effects of waiting times, described by the media, magazines of the maritime sector, and especially how the institutions have generated improvement plans for a development to long-term needs of the sector maritime. The results obtained are the contributions of all those involved in the maritime sector, both the private sector and the state, who seek to improve the process that is currently being developed in the Pacific ports. In conclusion, a series of recommendations of the contributions of the private sector and state institutions are proposed, such as the strengthening of the legal framework, improving the management, exploitation, and promotion of infrastructure, are the goal in which the two sectors agree. Who are analyzing the problems suffered by the infrastructure of the Pacific ports.Measurements and modeling of sediment transport during offshore and onshore bar migrationGrossmann, FlorianHurther, DavidSánchez-Arcilla Conejo, AgustínAlsina Torrent, José Maríahttp://hdl.handle.net/2117/3858032023-10-15T00:30:44Z2023-03-30T12:38:24ZMeasurements and modeling of sediment transport during offshore and onshore bar migration
Grossmann, Florian; Hurther, David; Sánchez-Arcilla Conejo, Agustín; Alsina Torrent, José María
Effective design of interventions in the coastal zone (flood defense, nourishments, etc.) requires understanding of long term coastal evolution. Historically, such evolution has been difficult to model because of different processes in storms and calm conditions, and the specific calibration factors required. This knowledge gap partly resulted from difficulties in measuring bedload and accretive transport processes at high detail. In the present study such measurements were obtained in the shoaling and outer surf zone of large-scale wave flume experiments with offshore-/onshore-migrating breaker bars. Physical insight from the measurements guided model decisions in a practical modeling approach separating bedload and suspended load but using the same calibration for storm and calm conditions. As a result, good replication (most tests within factor 2) of measured transport rates is obtained on the basis of free stream velocities. Identified priorities for development include parametrization of hydraulic roughness and wave breaking’s influences on entrainment and suspension.
2023-03-30T12:38:24ZGrossmann, FlorianHurther, DavidSánchez-Arcilla Conejo, AgustínAlsina Torrent, José MaríaEffective design of interventions in the coastal zone (flood defense, nourishments, etc.) requires understanding of long term coastal evolution. Historically, such evolution has been difficult to model because of different processes in storms and calm conditions, and the specific calibration factors required. This knowledge gap partly resulted from difficulties in measuring bedload and accretive transport processes at high detail. In the present study such measurements were obtained in the shoaling and outer surf zone of large-scale wave flume experiments with offshore-/onshore-migrating breaker bars. Physical insight from the measurements guided model decisions in a practical modeling approach separating bedload and suspended load but using the same calibration for storm and calm conditions. As a result, good replication (most tests within factor 2) of measured transport rates is obtained on the basis of free stream velocities. Identified priorities for development include parametrization of hydraulic roughness and wave breaking’s influences on entrainment and suspension.Posidonia beach-cast and banquette: evaluation of sediment trapping and characterisation for coastal protectionAstudillo Gutiérrez, Carlos SalvadorGracia Garcia, VicenteSierra Pedrico, Juan PabloCáceres Rabionet, IvánSánchez-Arcilla Conejo, Agustínhttp://hdl.handle.net/2117/3858002023-11-12T04:05:25Z2023-03-30T12:31:49ZPosidonia beach-cast and banquette: evaluation of sediment trapping and characterisation for coastal protection
Astudillo Gutiérrez, Carlos Salvador; Gracia Garcia, Vicente; Sierra Pedrico, Juan Pablo; Cáceres Rabionet, Iván; Sánchez-Arcilla Conejo, Agustín
The accumulation of Posidonia meadow remains is a recurrent phenomenon along the Catalan coast. As we move along the coastline from Barcelona towards the south, during autumn and winter the remains of Posidonia Oceanica gradually appear in areas close to the shoreline and the most sheltered areas of the beach. From the municipality of Salou (122 km south of Barcelona) to Deltebre, more than half of the beaches have the presence of banquettes with heights ranging from 20 cm up to 120 cm. This work proposes a new study of Posidonia accumulations on the southern coast of Catalonia, presenting a new laboratory methodology for the quantification of sediments retained on the Posidonia banquettes. This methodology eliminates the organic part of each sieve, muffling the sample at 500ºC for 30 minutes. In this way, the weight of sand per volume of sampled banquettes can be quantified. The results show a sediment retention value of at least 70% of the total weight of the sample, with a distribution equal to or finer than beach sand. It is also observed that a beach bench that is in the process of accumulating at the shoreline tends to accumulate less sediment than one that is in a position above the shoreline.
2023-03-30T12:31:49ZAstudillo Gutiérrez, Carlos SalvadorGracia Garcia, VicenteSierra Pedrico, Juan PabloCáceres Rabionet, IvánSánchez-Arcilla Conejo, AgustínThe accumulation of Posidonia meadow remains is a recurrent phenomenon along the Catalan coast. As we move along the coastline from Barcelona towards the south, during autumn and winter the remains of Posidonia Oceanica gradually appear in areas close to the shoreline and the most sheltered areas of the beach. From the municipality of Salou (122 km south of Barcelona) to Deltebre, more than half of the beaches have the presence of banquettes with heights ranging from 20 cm up to 120 cm. This work proposes a new study of Posidonia accumulations on the southern coast of Catalonia, presenting a new laboratory methodology for the quantification of sediments retained on the Posidonia banquettes. This methodology eliminates the organic part of each sieve, muffling the sample at 500ºC for 30 minutes. In this way, the weight of sand per volume of sampled banquettes can be quantified. The results show a sediment retention value of at least 70% of the total weight of the sample, with a distribution equal to or finer than beach sand. It is also observed that a beach bench that is in the process of accumulating at the shoreline tends to accumulate less sediment than one that is in a position above the shoreline.Morphodynamic modelling of an embayed beach: role of the forcing sourcesCarrion Bertran, NilFalqués Serra, AlbertRibas Prats, FrancescaCalvete Manrique, DanielDurán, RuthMarco, CandelaMarcos Moreno, MartaAmores, ÁngelToomey, TimFernández Mora, María de los ÁngelesGuillén Aranda, Jorgehttp://hdl.handle.net/2117/3821202023-02-06T15:14:10Z2023-02-03T16:52:37ZMorphodynamic modelling of an embayed beach: role of the forcing sources
Carrion Bertran, Nil; Falqués Serra, Albert; Ribas Prats, Francesca; Calvete Manrique, Daniel; Durán, Ruth; Marco, Candela; Marcos Moreno, Marta; Amores, Ángel; Toomey, Tim; Fernández Mora, María de los Ángeles; Guillén Aranda, Jorge
Modelling the response of sandy beaches to sea level rise is a major scientific challenge and several types of models can be applied. Given the long-time scales involved, different sources for model forcing must be combined (wave and sea-level, e.g., from buoys or hindcast models). We here apply the XBeach process-based morphodynamic model and the Q2Dmorfo reducedcomplexity model to El Castell, a Mediterranean embayed beach. The models are first calibrated with data measured during 161 days with an AWAC at 14 m depth in front of the beach. XBeach predicts reasonably well the bathymetric dynamics while Q2Dmorfo can only reproduce the shoreline evolution. The calibrated versions of the models are then applied using other potential forcing sources. The source for sea level does not affect the results but both models are sensitive to the wave forcing source.
2023-02-03T16:52:37ZCarrion Bertran, NilFalqués Serra, AlbertRibas Prats, FrancescaCalvete Manrique, DanielDurán, RuthMarco, CandelaMarcos Moreno, MartaAmores, ÁngelToomey, TimFernández Mora, María de los ÁngelesGuillén Aranda, JorgeModelling the response of sandy beaches to sea level rise is a major scientific challenge and several types of models can be applied. Given the long-time scales involved, different sources for model forcing must be combined (wave and sea-level, e.g., from buoys or hindcast models). We here apply the XBeach process-based morphodynamic model and the Q2Dmorfo reducedcomplexity model to El Castell, a Mediterranean embayed beach. The models are first calibrated with data measured during 161 days with an AWAC at 14 m depth in front of the beach. XBeach predicts reasonably well the bathymetric dynamics while Q2Dmorfo can only reproduce the shoreline evolution. The calibrated versions of the models are then applied using other potential forcing sources. The source for sea level does not affect the results but both models are sensitive to the wave forcing source.Natural processes behind the CO2 sink variability in the Southern Ocean during the last three decadesYilmaz, ElifBernardello, RaffaeleMartin, Adrian P.http://hdl.handle.net/2117/3704472023-11-12T11:59:42Z2022-07-19T09:40:55ZNatural processes behind the CO2 sink variability in the Southern Ocean during the last three decades
Yilmaz, Elif; Bernardello, Raffaele; Martin, Adrian P.
Anthropogenic activities during the past two centuries have caused an increase in atmospheric CO2 which has driven a linear increase in oceanic CO2 uptake. The Southern Ocean (SO, < 35¿S) is one of the major uptake areas for anthropogenic CO2, responsible for ~40% of ocean CO2 sink. Apart from the linear increase in the CO2 sinking trend, in the SO pronounced variations have been observed in recent decades, driven by natural processes, but the exact mechanisms behind them are still debated. Aiming to fill this knowledge gap, we investigated the natural drivers of CO2 flux variations in the SO using existing observation-based datasets between the years 1982-2019. We removed the long-term linear trend in the time series of CO2 flux and other indexes to focus on decadal variations. We found that two mechanisms explain the interannual to decadal variations in the SO: Ekman upwelling and eddy kinetic energy, by their controls on different components of surface pCO2 variations. The pattern of variability in Ekman upwelling during the time period studied was markedly circumpolar, and the time series of its 1st principal component was strongly correlated with the detrended SAM Index (r=0.81, p<0.05). Similarly, leading EOF maps of CO2 flux anomalies and the components of surface pCO2 changes (i.e., nonthermal and thermal) show that their variations were dominantly symmetric. As previously shown, weakening of SO CO2 sink in the 1990s coincides with intense positive SAM episodes. Following the late 1990s, the intensity of SAM decreased, which strengthened the CO2 sink in the early 2000s. At the same time, the relative contribution of the thermal component grew south of the Polar Front, indicating positive temperature anomalies during this period. Such warming events, following intense and recursive SAM episodes were reported before and were attributed to the increased mesoscale eddy activity in the region. In agreement with these studies, our results show that eddy kinetic energy increased after intense SAM periods with a lagged response of ~2 years, and a positive temperature anomaly in low frequency was observed following these peaks. This warming prevented the CO2 uptake rate from reaching immediately to its potential strength in the absence of strong westerlies, and explains the growing effect of the thermal pCO2 component.
2022-07-19T09:40:55ZYilmaz, ElifBernardello, RaffaeleMartin, Adrian P.Anthropogenic activities during the past two centuries have caused an increase in atmospheric CO2 which has driven a linear increase in oceanic CO2 uptake. The Southern Ocean (SO, < 35¿S) is one of the major uptake areas for anthropogenic CO2, responsible for ~40% of ocean CO2 sink. Apart from the linear increase in the CO2 sinking trend, in the SO pronounced variations have been observed in recent decades, driven by natural processes, but the exact mechanisms behind them are still debated. Aiming to fill this knowledge gap, we investigated the natural drivers of CO2 flux variations in the SO using existing observation-based datasets between the years 1982-2019. We removed the long-term linear trend in the time series of CO2 flux and other indexes to focus on decadal variations. We found that two mechanisms explain the interannual to decadal variations in the SO: Ekman upwelling and eddy kinetic energy, by their controls on different components of surface pCO2 variations. The pattern of variability in Ekman upwelling during the time period studied was markedly circumpolar, and the time series of its 1st principal component was strongly correlated with the detrended SAM Index (r=0.81, p<0.05). Similarly, leading EOF maps of CO2 flux anomalies and the components of surface pCO2 changes (i.e., nonthermal and thermal) show that their variations were dominantly symmetric. As previously shown, weakening of SO CO2 sink in the 1990s coincides with intense positive SAM episodes. Following the late 1990s, the intensity of SAM decreased, which strengthened the CO2 sink in the early 2000s. At the same time, the relative contribution of the thermal component grew south of the Polar Front, indicating positive temperature anomalies during this period. Such warming events, following intense and recursive SAM episodes were reported before and were attributed to the increased mesoscale eddy activity in the region. In agreement with these studies, our results show that eddy kinetic energy increased after intense SAM periods with a lagged response of ~2 years, and a positive temperature anomaly in low frequency was observed following these peaks. This warming prevented the CO2 uptake rate from reaching immediately to its potential strength in the absence of strong westerlies, and explains the growing effect of the thermal pCO2 component.PIMA Adapta Costas, a characterisation of flooding and erosion under different climate change scenarios along the Catalan coastSánchez Artús, XavierGracia Garcia, VicenteSierra Pedrico, Juan PabloPinyol Guamis, JordiSánchez-Arcilla Conejo, Agustínhttp://hdl.handle.net/2117/3688292022-06-21T18:00:53Z2022-06-21T17:53:58ZPIMA Adapta Costas, a characterisation of flooding and erosion under different climate change scenarios along the Catalan coast
Sánchez Artús, Xavier; Gracia Garcia, Vicente; Sierra Pedrico, Juan Pablo; Pinyol Guamis, Jordi; Sánchez-Arcilla Conejo, Agustín
Climate change, with sea level rise as one of its main consequences, will heavily change the dynamics of the coast in the next years. The assessment of the impacts that could cause is a key issue to anticipate measures and reduce risks, mainly flooding and erosion. PIMA Adapta Costas is a national project financed by “Ministerio de Transicion Ecológica y el Reto Demográfico” which aims to answer these unknowns along the Spanish coast. This work presents the evaluation of such impacts in 54 Catalan beaches located in 8 littoral cells. Erosion has been characterized by tracking the retreat of different datums whereas flooding has been defined as the sum of all inundated areas during more than 4 hours. The obtained results are integrated in a specific viewer developed by the ICGC. A complete description of the impacts will help identifying common response patterns that can be used to select optimal management strategies to reduce risks.
2022-06-21T17:53:58ZSánchez Artús, XavierGracia Garcia, VicenteSierra Pedrico, Juan PabloPinyol Guamis, JordiSánchez-Arcilla Conejo, AgustínClimate change, with sea level rise as one of its main consequences, will heavily change the dynamics of the coast in the next years. The assessment of the impacts that could cause is a key issue to anticipate measures and reduce risks, mainly flooding and erosion. PIMA Adapta Costas is a national project financed by “Ministerio de Transicion Ecológica y el Reto Demográfico” which aims to answer these unknowns along the Spanish coast. This work presents the evaluation of such impacts in 54 Catalan beaches located in 8 littoral cells. Erosion has been characterized by tracking the retreat of different datums whereas flooding has been defined as the sum of all inundated areas during more than 4 hours. The obtained results are integrated in a specific viewer developed by the ICGC. A complete description of the impacts will help identifying common response patterns that can be used to select optimal management strategies to reduce risks.Nature-based strategies for water renewal in micro-tidal coastal bays: application to the Ebre delta in the NW MediterraneanSánchez-Arcilla Conejo, AgustínMestres Ridge, MarcGracia Garcia, VicenteFernández-Pedrera Balsells, MartaMösso Aranda, CésarSierra Pedrico, Juan PabloEspino Infantes, Manuelhttp://hdl.handle.net/2117/3363132021-02-01T16:10:54Z2021-02-01T16:01:37ZNature-based strategies for water renewal in micro-tidal coastal bays: application to the Ebre delta in the NW Mediterranean
Sánchez-Arcilla Conejo, Agustín; Mestres Ridge, Marc; Gracia Garcia, Vicente; Fernández-Pedrera Balsells, Marta; Mösso Aranda, César; Sierra Pedrico, Juan Pablo; Espino Infantes, Manuel
The Fangar Bay, located at the northern lobe of the Ebro delta in the Spanish Mediterranean coast, supports an important aquaculture industry that must coexist with eco-tourism and water sports enterprises.These activities have experienced an important growth in the recent years, which, together with the increase in temperature and acidification associated to climate change have led to water quality degradation and mortality events affecting aquaculture production.The bay mouth is controlled by the morphodynamic evolution of a fronting sand spit subject to longshore sand transport gradient.The sheltered character of this bay result in limited wave and tidal flushing power, leading to limited water renovation and quality degradation.The low water fluxes and long renewal times result in eutrophication and anoxia episodes, aggravated by the effects of global warming that increases the duration of high temperature periods.The present growth of the spit is narrowing the shallow bay entrance, reducing even more the water circulation inside the bay, therefore jeopardizing the sustainability of current socio-economic activities within the bay domain.The objective of this work is to explore different Nature-based strategies to increase water renovation and quality within the bay, without compromising the overall morphodynamic sustainability of the delta and without generating a significant Carbon footprint. Two main alternatives are considered to increase the circulation inside the bay: combining irrigation discharges with favourable wind events and controlled appearance of breaching channels and overwash fluxes to promote exchanges between bay and coastal sea waters. The performance of these Nature-based solutions will be assessed by means of nested and coupled hydro-morphodynamic models validated with in-situ and Satellite data. The paper will end with some conclusions on the exportability of the proposed Nature-based solutions for this and other micro tidal environments.
2021-02-01T16:01:37ZSánchez-Arcilla Conejo, AgustínMestres Ridge, MarcGracia Garcia, VicenteFernández-Pedrera Balsells, MartaMösso Aranda, CésarSierra Pedrico, Juan PabloEspino Infantes, ManuelThe Fangar Bay, located at the northern lobe of the Ebro delta in the Spanish Mediterranean coast, supports an important aquaculture industry that must coexist with eco-tourism and water sports enterprises.These activities have experienced an important growth in the recent years, which, together with the increase in temperature and acidification associated to climate change have led to water quality degradation and mortality events affecting aquaculture production.The bay mouth is controlled by the morphodynamic evolution of a fronting sand spit subject to longshore sand transport gradient.The sheltered character of this bay result in limited wave and tidal flushing power, leading to limited water renovation and quality degradation.The low water fluxes and long renewal times result in eutrophication and anoxia episodes, aggravated by the effects of global warming that increases the duration of high temperature periods.The present growth of the spit is narrowing the shallow bay entrance, reducing even more the water circulation inside the bay, therefore jeopardizing the sustainability of current socio-economic activities within the bay domain.The objective of this work is to explore different Nature-based strategies to increase water renovation and quality within the bay, without compromising the overall morphodynamic sustainability of the delta and without generating a significant Carbon footprint. Two main alternatives are considered to increase the circulation inside the bay: combining irrigation discharges with favourable wind events and controlled appearance of breaching channels and overwash fluxes to promote exchanges between bay and coastal sea waters. The performance of these Nature-based solutions will be assessed by means of nested and coupled hydro-morphodynamic models validated with in-situ and Satellite data. The paper will end with some conclusions on the exportability of the proposed Nature-based solutions for this and other micro tidal environments.Relative sea-level rise induced changes in habitat distribution in the Ebro Delta: implications for adaptation strategiesLópez-Doriga Sandoval, UxíaJiménez Quintana, José Antoniohttp://hdl.handle.net/2117/1903492021-06-20T16:19:02Z2020-06-09T15:30:43ZRelative sea-level rise induced changes in habitat distribution in the Ebro Delta: implications for adaptation strategies
López-Doriga Sandoval, Uxía; Jiménez Quintana, José Antonio
In this study, the impact of relative sea-level rise (RSLR) and the potential damage to habitats in the Ebro Delta have been analysed. We present a methodology for improved flood-damage assessments caused by RSLR in natural areas by introducing the capacity of response in some habitats under different scenarios based on the Representative Concentration Pathways (RCPs) – RCP 4.5 and RCP 8.5. Our results suggest that 16% of the current deltaic plain will be flooded under the RCP 4.5 scenario by 2050, but if local subsidence is considered, the loss will increase by 8%. In this time period, RCP 8.5 estimations are quite similar, but they differ significantly in terms of the 2100 projections, with the expected affected area ranging from 44% to 56% of current surface under RCP 4.5 and RCP 8.5, respectively. Following the total damage approach in which any inundated surface is lost, the most affected habitats are those that are dominant at the lowest part of the delta. As an example, the extension of wetlands would decrease by 41% by 2050 under RCP 4.5. However, when the capability of habitat succession is considered, natural areas would be the most “benefited” under the new conditions and wetlands would increase by 113% under the same scenario within the same time period. This will lead to the existence of new areas with high environmental values, even though their characteristics would be different. This new perspective will allow for RSLR to be considered not just as a threat, but also as an opportunity from a natural standpoint. Moreover, this approach can help coastal managers apply new criteria in terms of adaptation needs during the decision-making process in order to be sustainable in the context of climate change.
2020-06-09T15:30:43ZLópez-Doriga Sandoval, UxíaJiménez Quintana, José AntonioIn this study, the impact of relative sea-level rise (RSLR) and the potential damage to habitats in the Ebro Delta have been analysed. We present a methodology for improved flood-damage assessments caused by RSLR in natural areas by introducing the capacity of response in some habitats under different scenarios based on the Representative Concentration Pathways (RCPs) – RCP 4.5 and RCP 8.5. Our results suggest that 16% of the current deltaic plain will be flooded under the RCP 4.5 scenario by 2050, but if local subsidence is considered, the loss will increase by 8%. In this time period, RCP 8.5 estimations are quite similar, but they differ significantly in terms of the 2100 projections, with the expected affected area ranging from 44% to 56% of current surface under RCP 4.5 and RCP 8.5, respectively. Following the total damage approach in which any inundated surface is lost, the most affected habitats are those that are dominant at the lowest part of the delta. As an example, the extension of wetlands would decrease by 41% by 2050 under RCP 4.5. However, when the capability of habitat succession is considered, natural areas would be the most “benefited” under the new conditions and wetlands would increase by 113% under the same scenario within the same time period. This will lead to the existence of new areas with high environmental values, even though their characteristics would be different. This new perspective will allow for RSLR to be considered not just as a threat, but also as an opportunity from a natural standpoint. Moreover, this approach can help coastal managers apply new criteria in terms of adaptation needs during the decision-making process in order to be sustainable in the context of climate change.Distribution, behaviour and litter interactions of deep-sea crustacean of the Gulf of Cadiz (NE Atlantic)Francescangeli, MarcoAguzzi, JacopoValencia Martínez de Antoñana, JavierErcilla Zárraga, GemmaFanelli, EmanuelaEstrada Llacer, FerranCosta, CorradoCompany Claret, Joan BaptistaDanovaro, Robertohttp://hdl.handle.net/2117/1874812024-01-14T12:37:35Z2020-05-14T09:39:07ZDistribution, behaviour and litter interactions of deep-sea crustacean of the Gulf of Cadiz (NE Atlantic)
Francescangeli, Marco; Aguzzi, Jacopo; Valencia Martínez de Antoñana, Javier; Ercilla Zárraga, Gemma; Fanelli, Emanuela; Estrada Llacer, Ferran; Costa, Corrado; Company Claret, Joan Baptista; Danovaro, Roberto
The deep-sea decapod crustacean assemblage of the Gulf of Cadiz is presently poorly characterized. Eighteen ROV video-transects (50 hours) were carried between 173 to 988 m depth on the continental slope. A total of 4339 individuals of 13 taxa were observed. Bathynectes maravigna (98 individuals and 2.3%), and Polybius henslowii (1691 individuals and 39.0%), were the most represented, followed by Munida sp. (1748 individuals, 40.2%). Individuals classified at family level were: Crangonidae (14 individuals, 0.3%), Majidae (1 individual, <0.1%), Paguridae (39 individuals, 0.9%), and Pandalidae (48 individuals, 1.1%). For a large group of animals, only a subclass or infraorder classification was achieved: Eumalacostraca (674 individuals, 15.5%) and Brachyura (2 individuals, <0.1%). Less observed specieswere: Nephrops norvegicus (8 individuals and 0.18%), Parapenaeus longirostris(8 individuals and 0.2%), Plesionika martia (16 individuals and 0.4%), Acanthephyra sp. (2 individuals and <0.1%). Munida sp. occurred in high-density patches in crinoid (Leptometra celtica) facies on the upper slope. P. henslowiiwas found in a contouritic channel. Species reaction to ROV footprint were aggressive (claws forward projectionand within burrow retraction) for Bathynectes maravigna, Munida sp., N. norvegicus, and P.henslowii(burrowingwas reported for the first time in this latter species, to our best knowledge). Species interaction with litter in B. maravigna, Munida sp., P. martia and Pandalidae was observed: individuals hiding under different kind of plastic andmetal artefacts.
2020-05-14T09:39:07ZFrancescangeli, MarcoAguzzi, JacopoValencia Martínez de Antoñana, JavierErcilla Zárraga, GemmaFanelli, EmanuelaEstrada Llacer, FerranCosta, CorradoCompany Claret, Joan BaptistaDanovaro, RobertoThe deep-sea decapod crustacean assemblage of the Gulf of Cadiz is presently poorly characterized. Eighteen ROV video-transects (50 hours) were carried between 173 to 988 m depth on the continental slope. A total of 4339 individuals of 13 taxa were observed. Bathynectes maravigna (98 individuals and 2.3%), and Polybius henslowii (1691 individuals and 39.0%), were the most represented, followed by Munida sp. (1748 individuals, 40.2%). Individuals classified at family level were: Crangonidae (14 individuals, 0.3%), Majidae (1 individual, <0.1%), Paguridae (39 individuals, 0.9%), and Pandalidae (48 individuals, 1.1%). For a large group of animals, only a subclass or infraorder classification was achieved: Eumalacostraca (674 individuals, 15.5%) and Brachyura (2 individuals, <0.1%). Less observed specieswere: Nephrops norvegicus (8 individuals and 0.18%), Parapenaeus longirostris(8 individuals and 0.2%), Plesionika martia (16 individuals and 0.4%), Acanthephyra sp. (2 individuals and <0.1%). Munida sp. occurred in high-density patches in crinoid (Leptometra celtica) facies on the upper slope. P. henslowiiwas found in a contouritic channel. Species reaction to ROV footprint were aggressive (claws forward projectionand within burrow retraction) for Bathynectes maravigna, Munida sp., N. norvegicus, and P.henslowii(burrowingwas reported for the first time in this latter species, to our best knowledge). Species interaction with litter in B. maravigna, Munida sp., P. martia and Pandalidae was observed: individuals hiding under different kind of plastic andmetal artefacts.Long-term monitoring of pelagic biodiversity in the NE-Pacific: a new program based on vertical ROV video surveys during NEPTUNE observatory maintenance expeditionsde Leo, FabioFrancescangeli, MarcoGuan, LuAguzzi, JacopoFanelli, EmanuelaUmetsu, MistukoLindsay, Dhugalhttp://hdl.handle.net/2117/1866582024-01-14T05:54:10Z2020-05-07T09:35:28ZLong-term monitoring of pelagic biodiversity in the NE-Pacific: a new program based on vertical ROV video surveys during NEPTUNE observatory maintenance expeditions
de Leo, Fabio; Francescangeli, Marco; Guan, Lu; Aguzzi, Jacopo; Fanelli, Emanuela; Umetsu, Mistuko; Lindsay, Dhugal
Actes demanades a l'autor (07/05/2020 manel); Long-term monitoring of pelagic biodiversity in the NE-Pacific: a new program based on vertical ROV video surveys during NEPTUNE observatory maintenance expeditions
2020-05-07T09:35:28Zde Leo, FabioFrancescangeli, MarcoGuan, LuAguzzi, JacopoFanelli, EmanuelaUmetsu, MistukoLindsay, DhugalActes demanades a l'autor (07/05/2020 manel)
Long-term monitoring of pelagic biodiversity in the NE-Pacific: a new program based on vertical ROV video surveys during NEPTUNE observatory maintenance expeditions