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Book ; Online: Land Modifications and Impacts on Coastal Areas

Aucelli, Pietro / Rizzo, Angela / Casarín, Rodolfo Silva / Anfuso, Giorgio

2023

Keywords	Research & information: general ; Environmental economics ; aboveground carbon storage ; coastal forests ; light detection and ranging (LiDAR) ; remote sensing ; satellite imagery ; sea level rise ; coastal squeeze ; tourism carrying capacity ; coastal management ; DESCR ; urbanized coasts ; beach nourishment ; coastal zone management ; beach erosion ; shoreline changes ; DSAS ; dune fragmentation ; coastal armouring ; mercury ; gold ; socioeconomic impacts ; political management ; environmental management ; landscape ; beach ; management ; climate change ; erosion ; tourism pressure ; sustainability ; developing country ; coastal evolution ; cultural and land use changes ; anthropic impacts ; Holocene ; Tyrrhenian Sea ; sediment transport ; sedimentary environments ; ecosystem distribution ; coastal dynamics ; coastal profiling ; physical processes ; anthropogenic pressure ; ocean energy harvesting ; marine spatial planning ; environmental impact ; mitigation strategies ; coastal contaminated sites ; geo-morphodynamic model ; reclamation activities ; Apulia region ; Taranto ; hazard evaluation ; slope structural analysis ; structure for motion ; Salina Island ; ecosystem services ; land use/land cover change ; benefit transfer ; coastal landscapes ; quantification ; spatio-temporal ; West Africa ; Ghana ; coastal erosion ; coastline ; Gulf of Guinea ; Kribi ; fragilization
Language	English
Size	1 electronic resource (348 pages)
Publisher	MDPI - Multidisciplinary Digital Publishing Institute
Publishing place	Basel
Document type	Book ; Online
Note	English
HBZ-ID	HT030380674
ISBN	9783036561363 ; 3036561366
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Article ; Online: Partitioning the Extreme Wave Spectrum of Hurricane Wilma to Improve the Design of Wave Energy Converters

Marco Ulloa / Rodolfo Silva / Ismael Mariño-Tapia

Sustainability, Vol 15, Iss 7414, p

2023 Volume 7414

Abstract: Analysis of the omnidirectional energy spectrum from storm wave measurements provides valuable parameters for understanding the specific local conditions that wave energy converters would have to withstand. Partitioning the energy spectrum also helps to ... ...

Abstract	Analysis of the omnidirectional energy spectrum from storm wave measurements provides valuable parameters for understanding the specific local conditions that wave energy converters would have to withstand. Partitioning the energy spectrum also helps to identify wave groups with low directional spread propagating in the direction of the dominant waves of the more energetic wave systems. This paper analyzes the partition of the Hurricane Wilma energy spectrum using single-point measurements obtained in shallow water. Hurricane Wilma generated simultaneous crossing wave systems with different significant wave heights and steepnesses. The maximum estimated significant height among the wave groups was 5.5 m. The corresponding height of the partitions and the omnidirectional energy spectrum were 11.0 m (swell) and 12 m, respectively. While linear superposition was the main mechanism responsible for driving the wave groups, at times, modulational instability produced nonlinear wave groups. This is a new finding, since modulational instability is usually considered an open-sea phenomenon. For shorelines with multidirectional wave groups, submerged and semi-submerged devices should be designed to account for changes in wave direction and wave height, although under extreme hurricane conditions, energy harvesting might have to be sacrificed for the benefit of device integrity.
Keywords	marine renewable energy ; wave energy ; wave energy converters ; Gulf of Mexico ; Mexican Caribbean Sea ; wave measurements ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
Subject code	535
Language	English
Publishing date	2023-04-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Extreme Value Analysis of Ocean Currents in the Mexican Caribbean Based on HYCOM Numerical Model Data

Michael Ring / Paola Elizabeth Rodríguez-Ocampo / Rodolfo Silva / Edgar Mendoza

Frontiers in Marine Science, Vol

2022 Volume 9

Abstract: Comprehensive knowledge of extreme values is required for designing offshore structures and ocean current turbines. However, data on the return levels of ocean currents are rarely available. This is the case for the Mexican Caribbean, where enormous ... ...

Abstract	Comprehensive knowledge of extreme values is required for designing offshore structures and ocean current turbines. However, data on the return levels of ocean currents are rarely available. This is the case for the Mexican Caribbean, where enormous energy potential in the ocean currents has recently been detected. In this study, long-term numerical data from the Hybrid Coordinate Ocean Model for a depth of 50m was adjusted via linear quantile regression to short-term empirical data for a depth of 49m. The error of the results was estimated using simplified extreme value analysis. Based on the numerical data, a comprehensive extreme value analysis was conducted using the peaks over threshold method and fitting a Generalized Pareto Distribution to the data. This method relies on filtering peaks with a moving time window and an automated threshold selection based on a reparameterised scale parameter of the Generalized Pareto Distribution. The adjusted numerical model is shown to underestimate the empirical data with the error converging to almost 22% for rare events (return period > 10years). The method showed consistent results in the domain, with some anomalies only at the boundaries of the underlying numerical model. The methodology is suitable for estimating the return levels of ocean currents provided by HYCOM, although further research is needed to reduce the error of the numerical model.
Keywords	ocean current ; return level ; extreme value analysis ; peaks over threshold ; generalized pareto distribution ; Caribbean Sea ; Science ; Q ; General. Including nature conservation ; geographical distribution ; QH1-199.5
Subject code	551
Language	English
Publishing date	2022-06-01T00:00:00Z
Publisher	Frontiers Media S.A.
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Modeling of wave run-up by applying integrated models of group method of data handling

Amin Mahdavi-Meymand / Mohammad Zounemat-Kermani / Wojciech Sulisz / Rodolfo Silva

Scientific Reports, Vol 12, Iss 1, Pp 1-

2022 Volume 15

Abstract: Abstract Wave-induced inundation in coastal zones is a serious problem for residents. Accurate prediction of wave run-up height is a complex phenomenon in coastal engineering. In this study, several machine learning (ML) models are developed to simulate ... ...

Abstract	Abstract Wave-induced inundation in coastal zones is a serious problem for residents. Accurate prediction of wave run-up height is a complex phenomenon in coastal engineering. In this study, several machine learning (ML) models are developed to simulate wave run-up height. The developed methods are based on optimization techniques employing the group method of data handling (GMDH). The invasive weed optimization (IWO), firefly algorithm (FA), teaching–learning-based optimization (TLBO), harmony search (HS), and differential evolution (DE) meta-heuristic optimization algorithms are embedded with the GMDH to yield better feasible optimization. Preliminary results indicate that the developed ML models are robust tools for modeling the wave run-up height. All ML models’ accuracies are higher than empirical relations. The obtained results show that employing heuristic methods enhances the accuracy of the standard GMDH model. As such, the FA, IWO, DE, TLBO, and HS improve the RMSE criterion of the standard GMDH by the rate of 47.5%, 44.7%, 24.1%, 41.1%, and 34.3%, respectively. The GMDH-FA and GMDH-IWO are recommended for applications in coastal engineering.
Keywords	Medicine ; R ; Science ; Q
Subject code	006
Language	English
Publishing date	2022-05-01T00:00:00Z
Publisher	Nature Portfolio
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Interaction between Tourism Carrying Capacity and Coastal Squeeze in Mazatlan, Mexico

Pedro Aguilar / Edgar Mendoza / Rodolfo Silva

Land, Vol 10, Iss 900, p

2021 Volume 900

Abstract: While many coastal areas are affected by coastal squeeze, quantitative estimations of this phenomenon are still limited. Ambiguity concerning the degree of coastal squeeze, combined with a lack of knowledge on its interaction with human activities may ... ...

Abstract	While many coastal areas are affected by coastal squeeze, quantitative estimations of this phenomenon are still limited. Ambiguity concerning the degree of coastal squeeze, combined with a lack of knowledge on its interaction with human activities may lead to inadequate and unsuccessful management responses. The objective of the present research was to quantify the degree of coastal squeeze on the highly urbanized coast of Mazatlan, Mexico, and to investigate the relationship between the development of tourism and coastal squeeze from various time perspectives. The Drivers, Exchanges, States of the environment, Consequences, and Responses (DESCR) framework was applied to identify the chronic, negative consequences of dense tourism in the area, together with the assessment of coastal squeeze. A Tourism Load Capacity (TLC) estimation was made and correlated with the DESCR results, showing that coastal squeeze is inversely correlated with tourism load in Mazatlan. The medium-intensity coastal squeeze currently experienced in Mazatlan requires interventions to avoid severe degradation of the ecosystem on which the local tourism industry relies, for which immediate, long-term, and administrative recommendations are given.
Keywords	coastal squeeze ; tourism carrying capacity ; coastal management ; DESCR ; urbanized coasts ; Agriculture ; S
Subject code	910
Language	English
Publishing date	2021-08-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Multivariable Analysis of Transport Network Seismic Performance

Azucena Román-de la Sancha / Rodolfo Silva

Sustainability, Vol 12, Iss 9726, p

Mexico City

2020 Volume 9726

Abstract: In densely populated urban areas, predicting the post-earthquake performance of a transport network is a particularly challenging task that requires the integration of modeled structural seismic response, damage scenarios, and resulting traffic behavior. ...

Abstract	In densely populated urban areas, predicting the post-earthquake performance of a transport network is a particularly challenging task that requires the integration of modeled structural seismic response, damage scenarios, and resulting traffic behavior. Previous approaches assessing the vulnerability and performance of networks after earthquakes have not succeeded in capturing and estimating the interdependencies between seismic risk parameters and key traffic behavior variables. This paper presents a methodology, based on data analysis and optimization, where the dynamic traffic modeling and probabilistic seismic hazard assessment are coupled, to link and characterize key network performance variables after extreme earthquakes and establish a multivariable seismic performance measure. The methodology is used to study the transport network in the southern part of Mexico City for a set of scenarios. The seismic environment is established through uniform hazard spectra derived for firm soil. Damage to structures is estimated considering site response and using fragility functions. Dynamic traffic modeling is developed to simulate damage-induced road closures and resulting in traffic variations. Post-earthquake network performance is evaluated through data envelopment analyses, obtaining sets of seismic performance boundaries, and seismic performance maps. The methodology offers a quantitative tool with applications in the planning of urban areas that are sustainable and seismic resilient.
Keywords	urban transport vulnerability ; seismic vulnerability ; data envelopment analysis ; post-earthquake performance ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
Subject code	380
Language	English
Publishing date	2020-11-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Using Spatial Planning Tools to Identify Potential Areas for the Harnessing of Ocean Currents in the Mexican Caribbean

Isabel Bello-Ontiveros / Gabriela Mendoza-González / Lizbeth Márquez-Pérez / Rodolfo Silva

Land, Vol 11, Iss 665, p

2022 Volume 665

Abstract: A spatial analysis was carried out to evaluate the compatibility of human activities and biophysical characteristics in the Mexican Caribbean Sea, in order to identify the most viable areas for energy generation from ocean currents and the areas where ... ...

Abstract	A spatial analysis was carried out to evaluate the compatibility of human activities and biophysical characteristics in the Mexican Caribbean Sea, in order to identify the most viable areas for energy generation from ocean currents and the areas where the population would most benefit from such energy projects. Of the study area, 82% have some form of protection legislation. Tourism is the main economic activity in the area and this is reflected in a wide range of activities and services that often overlap within the same spatial area. In the case study, the use of renewable ocean energies is seen as an important innovation to reduce fossil fuel dependency. These energies have the potential to meet the demands of the region. However, it is vital to seek for potential areas for this type of energy harvesting where the social, economic and environmental impacts would be minimal. The lack of marine policies and land-use planning processes in Mexico is a major obstacle in avoiding land use conflicts.
Keywords	ocean energy harvesting ; marine spatial planning ; environmental impact ; mitigation strategies ; Agriculture ; S
Language	English
Publishing date	2022-04-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: The Effect of Temperature on the Growth of Holopelagic Sargassum Species

Edén Magaña-Gallegos / Eva Villegas-Muñoz / Evelyn Raquel Salas-Acosta / M. Guadalupe Barba-Santos / Rodolfo Silva / Brigitta I. van Tussenbroek

Phycology, Vol 3, Iss 9, Pp 138-

2023 Volume 146

Abstract: Holopelagic Sargassum species have bloomed recurrently in the northern tropical Atlantic since 2011, causing socioeconomic and environmental problems. Little is known about their basic biology and responses to the abiotic environment. The aim of this ... ...

Abstract	Holopelagic Sargassum species have bloomed recurrently in the northern tropical Atlantic since 2011, causing socioeconomic and environmental problems. Little is known about their basic biology and responses to the abiotic environment. The aim of this study was to determine how temperature affects the growth rates of the genotypes S. fluitans III, S. natans I, and S. natans VIII that predominate in these blooms. The growth rates were evaluated in specially designed ex situ systems between 22 and 31 °C, which corresponds with the natural temperature range of these seaweeds in the northern tropical Atlantic. All the genotypes had decreased growth rates at 31 °C, and they varied in their response to temperature, with S. fluitans III presenting a maximal rate of 0.096 doublings· day −1 (doubling its weight in 10.5 d) at 28 °C and S. natans VIII a minimal rate of 0.045 doublings· day −1 (doubling its weight in 22.2 d) at 31 °C. In addition, the response to the temperature varied depending on the time of the year. Understanding the role of temperature in the growth of holopelagic Sargassum genotypes, amongst other factors influencing their physiology (such as nutrients, salinity tolerance, or light, including their interactions), could help to understand the dynamics of the recent blooms in the tropical North Atlantic.
Keywords	sargasso ; algal bloom ; temperature range ; specific growth rate ; doubling time ; season ; Neurosciences. Biological psychiatry. Neuropsychiatry ; RC321-571 ; Biology (General) ; QH301-705.5
Subject code	333
Language	English
Publishing date	2023-02-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Reflections on nursing students fear and anxiety arising from clinical practicums.

Cruz Araújo, Agostinho Antônio / de Godoy, Simone / Arena Ventura, Carla Aparecida / Rodolfo Silva, Ítalo / Santos de Almeida, Emerson Willian / Costa Mendes, Isabel Amélia

Investigacion y educacion en enfermeria

2023 Volume 40, Issue 3

Abstract: Background: Anxiety and fear are emotional responses that may emerge when individuals anticipate threats. Undergraduate nursing students may experience feelings of hopelessness and anguish in the clinical learning experience, directly impacting their ... ...

Abstract	Background: Anxiety and fear are emotional responses that may emerge when individuals anticipate threats. Undergraduate nursing students may experience feelings of hopelessness and anguish in the clinical learning experience, directly impacting their academic performance. This study aims to reflect upon the fear and anxiety faced by nursing students during clinical training. Synopsis of contents: Two thematic axes were focused: Students' perception regarding preceptorship attitudes and positions; Relational teaching-learning processes and their influence on the students' professional identity. Preceptors are expected to encourage the establishment and maintenance of good relationships in the collaborative network in which students are included, especially with the multi-professional health team, to have more comprehensive academic support. Conclusions: The role and importance of each individual in academic training, such as students and professors, is emphasized, seeking to promote positive experiences in the teaching-learning process to enable undergraduate students to more effectively develop moral sensitivity and take responsibility for patient-centered care.
MeSH term(s)	Humans ; Preceptorship ; Education, Nursing, Baccalaureate ; Students, Nursing ; Anxiety ; Fear
Language	English
Publishing date	2023-03-03
Publishing country	Colombia
Document type	Journal Article
ZDB-ID	605989-2
ISSN	2216-0280 ; 0120-5307
ISSN (online)	2216-0280
ISSN	0120-5307
DOI	10.17533/udea.iee.v40n3e13
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Coral Reef Geometry and Hydrodynamics in Beach Erosion Control in North Quintana Roo, Mexico

Mireille Escudero / Borja G. Reguero / Edgar Mendoza / Fernando Secaira / Rodolfo Silva

Frontiers in Marine Science, Vol

2021 Volume 8

Abstract: Coral reefs are increasingly recognized for their shoreline protection services. The hydrodynamic performance of this ecosystem is comparable to artificial low-crested structures often used in coastal protection, whose objective is to emulate the former. ...

Abstract	Coral reefs are increasingly recognized for their shoreline protection services. The hydrodynamic performance of this ecosystem is comparable to artificial low-crested structures often used in coastal protection, whose objective is to emulate the former. Coral reefs also provide other important environmental services (e.g., food production, habitat provision, maintenance of biodiversity and social and cultural services) and leave almost no ecological footprint when conservation and restoration actions are conducted to maintain their coastal protection service. However, studies have focused on their flood protection service, but few have evaluated the morphological effects of coral reefs through their ability to avoid or mitigate coastal erosion. In this paper, we investigate the relation between shoreline change, reefs’ geometry and hydrodynamic parameters to elucidate the physics related to how the Mesoamerican Reef in Mexico protects sandy coastlines from erosion. Using numerical wave propagation and historical shoreline change calculated from satellite imagery, a direct correlation was found between shoreline movement, the depths and widths of reef flats, changes in the wave energy flux, and the radiation stresses of breaking waves. The findings indicate that the most remarkable efficacy in preventing beach erosion is due to reefs with shallow crests, wide reef flats, a dissipative lagoon seabed, located at ∼300 m from the coastline. The results provide essential insights for reef restoration projects focused on erosion mitigation and designing artificial reefs in microtidal sandy beaches. Results are limited to wave-dominated coasts.
Keywords	beach erosion mitigation ; coral reefs ; coastal protection ; radiation stress ; wave energy ; nature-based solutions ; Science ; Q ; General. Including nature conservation ; geographical distribution ; QH1-199.5
Subject code	710
Language	English
Publishing date	2021-09-01T00:00:00Z
Publisher	Frontiers Media S.A.
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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