R. F. Carvalho, J. Santos, G. Ojeda, M. Beg, P. Lopes, J. Fortes, J. Lara
: Climate change studies already reported sea level rise as an accepted scenario, which induces changes in nearshore wave conditions. A large range of new experiences including water level, run-up, overtopping, hydrodynamic data for different wave steepnesses and directions was performed in the Leibniz Universität Hannover (LUH) wave basin for a rubble mound breakwater with a slope of 1(V):2(H). This work presents, focusing on oblique extreme wave conditions, numerical simulations of the hydrodynamics in that experiment using OpenFOAM®. Results of the wave generation boundary conditions and their propagation, namely elevation of the water level free-surface and velocity data at specific locations are compared and discussed with data from experimental measurements acquired by acoustic wave gauges and acoustic doppler velocimeter (ADV) / Vectrino equipment. Although an exact match between numerical and laboratory values was not reached, an appropriate incident wave angle and a reasonable amplitude of velocities and water depths was achieved and the same happened to the statistics of those values.
{"title":"Experimental and numerical simulations of oblique extreme wave conditions in front of a breakwater's trunk and round head","authors":"R. F. Carvalho, J. Santos, G. Ojeda, M. Beg, P. Lopes, J. Fortes, J. Lara","doi":"10.5894/rgci-n294","DOIUrl":"https://doi.org/10.5894/rgci-n294","url":null,"abstract":": Climate change studies already reported sea level rise as an accepted scenario, which induces changes in nearshore wave conditions. A large range of new experiences including water level, run-up, overtopping, hydrodynamic data for different wave steepnesses and directions was performed in the Leibniz Universität Hannover (LUH) wave basin for a rubble mound breakwater with a slope of 1(V):2(H). This work presents, focusing on oblique extreme wave conditions, numerical simulations of the hydrodynamics in that experiment using OpenFOAM®. Results of the wave generation boundary conditions and their propagation, namely elevation of the water level free-surface and velocity data at specific locations are compared and discussed with data from experimental measurements acquired by acoustic wave gauges and acoustic doppler velocimeter (ADV) / Vectrino equipment. Although an exact match between numerical and laboratory values was not reached, an appropriate incident wave angle and a reasonable amplitude of velocities and water depths was achieved and the same happened to the statistics of those values.","PeriodicalId":37892,"journal":{"name":"Journal of Integrated Coastal Zone Management","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71208191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
António Evaristo, Lígia Pinto, Isabella Ascione Kenov, R. Neves
{"title":"Hidrodinâmica da Baía do Lobito. Parte I - Correntes de maré","authors":"António Evaristo, Lígia Pinto, Isabella Ascione Kenov, R. Neves","doi":"10.5894/rgci-n406","DOIUrl":"https://doi.org/10.5894/rgci-n406","url":null,"abstract":"","PeriodicalId":37892,"journal":{"name":"Journal of Integrated Coastal Zone Management","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49229937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
F. Taveira-Pinto, P. Rosa-Santos, T. Fazeres-Ferradosa
{"title":"Coastal dynamics and protection","authors":"F. Taveira-Pinto, P. Rosa-Santos, T. Fazeres-Ferradosa","doi":"10.5894/rgci-n467","DOIUrl":"https://doi.org/10.5894/rgci-n467","url":null,"abstract":"","PeriodicalId":37892,"journal":{"name":"Journal of Integrated Coastal Zone Management","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71208529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
António Evaristo, R. Neves, Lígia Pinto, J. Sobrinho
{"title":"Hidrodinâmica da Baía do Lobito. Parte II - Escoamento Baroclínico","authors":"António Evaristo, R. Neves, Lígia Pinto, J. Sobrinho","doi":"10.5894/rgci-n407","DOIUrl":"https://doi.org/10.5894/rgci-n407","url":null,"abstract":"","PeriodicalId":37892,"journal":{"name":"Journal of Integrated Coastal Zone Management","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71208170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Environmental Impacts Systematic Analysis of Ports Disposed Dredged Sediments Techniques","authors":"Lorena N. Rosa, D. D. Freitas","doi":"10.5894/rgci-n398","DOIUrl":"https://doi.org/10.5894/rgci-n398","url":null,"abstract":"","PeriodicalId":37892,"journal":{"name":"Journal of Integrated Coastal Zone Management","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71208084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Em ecossistemas costeiros tropicais, os manguezais são considerados importantes áreas de alimentação, reprodução e abrigo para muitas espécies marinhas, entretanto, a intensa utilização de seus recursos naturais e a pressão antrópica sob áreas costeiras ameaça a existência desses ambientes. O objetivo do presente estudo foi determinar possíveis variações no tamanho e densidade populacional de M. coffea entre manguezais desmatados e conservados, além de relacionar a sua distribuição com os parâmetros estruturais dos bosques como: densidade de árvores, composição específica, altura das árvores, diâmetro acima do peito (DAP) e área basal. Para isso, foram escolhidas três áreas de manguezais desmatadas e três áreas conservadas. Em cada local, foram sorteados três sítios e em cada sítio, foi demarcado um transecto com três parcelas com 100 m² cada. Em cada parcela, foram identificadas as espécies vegetais de mangue, estimada sua altura e medida a circunferência. A seguir, foram coletados todos os indivíduos de M. coffea encontrados que foram medidos quanto à altura, largura e altura da abertura da concha. A maior abundância e os maiores tamanhos de gastrópodes foram registrados nas áreas conservadas. Os resultados da análise indicam uma relação entre M. coffea e a densidade de Rhizophora mangle, a altura e o DAP do bosque. Concluiu-se que a distribuição de M. coffea pode ser influenciada diretamente pela disponibilidade e a qualidade dos recursos das florestas de mangue, podendo ser um indicador ecológico para áreas de manguezais desmatados.
{"title":"O Uso do Gastrópode Melampus coffea (Ellobiidae) (Linnaeus, 1758) Como Indicador Ecológico do Estado de Degradação Ambiental de Manguezais","authors":"Francisca Cinara Araújo, R. C. Maia","doi":"10.5894/rgci-n366","DOIUrl":"https://doi.org/10.5894/rgci-n366","url":null,"abstract":"Em ecossistemas costeiros tropicais, os manguezais são considerados importantes áreas de alimentação, reprodução e abrigo para muitas espécies marinhas, entretanto, a intensa utilização de seus recursos naturais e a pressão antrópica sob áreas costeiras ameaça a existência desses ambientes. O objetivo do presente estudo foi determinar possíveis variações no tamanho e densidade populacional de M. coffea entre manguezais desmatados e conservados, além de relacionar a sua distribuição com os parâmetros estruturais dos bosques como: densidade de árvores, composição específica, altura das árvores, diâmetro acima do peito (DAP) e área basal. Para isso, foram escolhidas três áreas de manguezais desmatadas e três áreas conservadas. Em cada local, foram sorteados três sítios e em cada sítio, foi demarcado um transecto com três parcelas com 100 m² cada. Em cada parcela, foram identificadas as espécies vegetais de mangue, estimada sua altura e medida a circunferência. A seguir, foram coletados todos os indivíduos de M. coffea encontrados que foram medidos quanto à altura, largura e altura da abertura da concha. A maior abundância e os maiores tamanhos de gastrópodes foram registrados nas áreas conservadas. Os resultados da análise indicam uma relação entre M. coffea e a densidade de Rhizophora mangle, a altura e o DAP do bosque. Concluiu-se que a distribuição de M. coffea pode ser influenciada diretamente pela disponibilidade e a qualidade dos recursos das florestas de mangue, podendo ser um indicador ecológico para áreas de manguezais desmatados.","PeriodicalId":37892,"journal":{"name":"Journal of Integrated Coastal Zone Management","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47326601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Oceanic islands are biotically fragile environments prone to suffer irreversible anthropogenic disturbances. The growth of the human population and the intensive occupation of the coastline are the cause of great ecological pressure on global insular coastal ecosystems. We review the current situation and future scenarios on a paradigmatic oceanic archipelago (Canary Islands, NE Atlantic Ocean), as a case study of the human footprint on marine coastal communities. The role of humans is pivotal, as we directly affect patterns of coastal occupation, pollution, invasive species or fishing. Here we synthesize the information that describes the current situation of the coastal ecosystems of the Canary Islands, indicating the main sources of environmental conflict and impacts. In addition, we review the state of the most relevant or threatened habitats and the taxonomic groups as actors of the main disturbances in the coastal ecosystems of the archipelago. We propose future general scenarios about expected changes, and foreseeable interactions that could occur to transform the coastal environments of the islands, in order to indicate areas susceptible to improvement for the conservation of these ecosystems. Integrative coastal actions are urgently needed for sustainable future scenarios to oppose deleterious trends such as tropicalization, fisheries collapse and extensive coastal degradation due to urbanization and infrastructure construction.
{"title":"Anthropogenic disturbances and conservation of coastal environments in an oceanic archipelago","authors":"J. Delgado, R. Riera","doi":"10.5894/RGCI-N267","DOIUrl":"https://doi.org/10.5894/RGCI-N267","url":null,"abstract":"Oceanic islands are biotically fragile environments prone to suffer irreversible anthropogenic disturbances. The growth of the human population and the intensive occupation of the coastline are the cause of great ecological pressure on global insular coastal ecosystems. We review the current situation and future scenarios on a paradigmatic oceanic archipelago (Canary Islands, NE Atlantic Ocean), as a case study of the human footprint on marine coastal communities. The role of humans is pivotal, as we directly affect patterns of coastal occupation, pollution, invasive species or fishing. Here we synthesize the information that describes the current situation of the coastal ecosystems of the Canary Islands, indicating the main sources of environmental conflict and impacts. In addition, we review the state of the most relevant or threatened habitats and the taxonomic groups as actors of the main disturbances in the coastal ecosystems of the archipelago. We propose future general scenarios about expected changes, and foreseeable interactions that could occur to transform the coastal environments of the islands, in order to indicate areas susceptible to improvement for the conservation of these ecosystems. Integrative coastal actions are urgently needed for sustainable future scenarios to oppose deleterious trends such as tropicalization, fisheries collapse and extensive coastal degradation due to urbanization and infrastructure construction.","PeriodicalId":37892,"journal":{"name":"Journal of Integrated Coastal Zone Management","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71208147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Regina Célia Macedo do Nascimento, Cibele Rodrigues Costa, Mateus Magarotto, Jacqueline Santos Silva-Cavalcanti, M. F. Costa
Essa situação soma-se a outros impactos da cultura secular de como o desmatamento, escoamento de e ABSTRACT: Estuaries are environments of high biological productivity that provide diverse ecosystem services, such as food or shelter. Its water quality is fundamental for the development and maintenance as close as possible to the original ecological standards that guarantee these services. Thus, this study aimed to compare the water quality of three tropical estuaries with different occupation histories and degrees of urbanization. The Goiana, dissolved oxygen, oxygen saturation, biochemical oxygen demand, turbidity, colour, salinity and total phosphorus. All data were obtained from the Pernambuco State Environmental Agency (CPRH) from 2006 to 2009, as part of its water quality monitoring program. The three estuaries, regardless of their conservation status, are under poor water quality conditions, with high levels of total phosphorus (0.18 mg L -1 Brazilian guidelines) and low dissolved oxygen concentrations (entre 0.0 and 6.7 mg L -1 , present work). Even with seasonal changes and over the years, oxygen levels are often less than 2.0 mg L -1 characterizing hypoxia - possibly helped by high water temperatures (24.5 to 30.0 o C). As a general scenario, even with different urban contribution, the three estuaries need attention regarding water quality. Results reflect the lack of basic sanitation in the three basins, regardless of their degree of urbanization. This situation adds to other impacts from the centuries old sugarcane plantations and milling, such as deforestation, fertilizer runoff, soil leaching and other polluting loads.
摘要:河口是具有高生物生产力的生态环境，可提供多种生态系统服务，如食物或住所。它的水质是发展和维护的基础，尽可能接近保证这些服务的原始生态标准。因此，本研究旨在比较三个具有不同占领历史和城市化程度的热带河口的水质。Goiana，溶解氧，氧饱和度，生化需氧量，浊度，颜色，盐度和总磷。所有数据均来自伯南布哥州环境局(CPRH) 2006年至2009年的水质监测项目。这三个河口，无论其保护状况如何，水质条件都很差，总磷含量高(巴西指南0.18 mg L -1)，溶解氧浓度低(目前工作中心为0.0和6.7 mg L -1)。即使有季节变化和多年来，氧气水平通常低于2.0 mg L -1，这是缺氧的特征，可能是由于水温高(24.5至30.0℃)。作为一般情况，即使有不同的城市贡献，三个河口也需要关注水质。结果表明，无论城市化程度如何，这三个流域都缺乏基本卫生设施。这种情况增加了数百年历史的甘蔗种植园和碾磨造成的其他影响，如森林砍伐、肥料流失、土壤淋滤和其他污染负荷。
{"title":"Qualidade da água de três estuários tropicais expostos a diferentes níveis de urbanização","authors":"Regina Célia Macedo do Nascimento, Cibele Rodrigues Costa, Mateus Magarotto, Jacqueline Santos Silva-Cavalcanti, M. F. Costa","doi":"10.5894/rgci-n284","DOIUrl":"https://doi.org/10.5894/rgci-n284","url":null,"abstract":"Essa situação soma-se a outros impactos da cultura secular de como o desmatamento, escoamento de e ABSTRACT: Estuaries are environments of high biological productivity that provide diverse ecosystem services, such as food or shelter. Its water quality is fundamental for the development and maintenance as close as possible to the original ecological standards that guarantee these services. Thus, this study aimed to compare the water quality of three tropical estuaries with different occupation histories and degrees of urbanization. The Goiana, dissolved oxygen, oxygen saturation, biochemical oxygen demand, turbidity, colour, salinity and total phosphorus. All data were obtained from the Pernambuco State Environmental Agency (CPRH) from 2006 to 2009, as part of its water quality monitoring program. The three estuaries, regardless of their conservation status, are under poor water quality conditions, with high levels of total phosphorus (0.18 mg L -1 Brazilian guidelines) and low dissolved oxygen concentrations (entre 0.0 and 6.7 mg L -1 , present work). Even with seasonal changes and over the years, oxygen levels are often less than 2.0 mg L -1 characterizing hypoxia - possibly helped by high water temperatures (24.5 to 30.0 o C). As a general scenario, even with different urban contribution, the three estuaries need attention regarding water quality. Results reflect the lack of basic sanitation in the three basins, regardless of their degree of urbanization. This situation adds to other impacts from the centuries old sugarcane plantations and milling, such as deforestation, fertilizer runoff, soil leaching and other polluting loads.","PeriodicalId":37892,"journal":{"name":"Journal of Integrated Coastal Zone Management","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71208327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. F. Oliveira, Filipa S. B. F. Oliveira, A. Trigo-Teixeira
The importance that coastal zones assume in Portugal implies a necessity for adequate responses to erosion-associated risks. One example is the coastal stretch located between the Mondego and Lis rivers’ inlets, which has been a frequent target of coastal protection measures, such as the construction of groins and seawalls. A possible alternative measure is a submerged detached breakwater, which can provide beach protection and enhance local surfing conditions. Thus, in this study the morphodynamics as a result of the wave breakwater bottom interaction in the active zone located in the vicinity of the structure was analyzed using two numerical models: a two dimensional, depth-averaged (2DH), Delft3D, and a one-line (coastline), LITLINE. The models were applied considering typical hydrodynamic forcing conditions (mean and most frequent waves) and morpho-sedimentologic conditions of the site. The sensitivity of the breakwater’s parameters to the beach morphological response was analysed using Delft3D. The coastline evolution was compared with LITLINE’s prediction. Delft3D is able to reproduce the dominant circulation patterns in the structure’s vicinity, and between the structure and the coastline, which influence its evolution. On the contrary, the LITLINE’s model simplifications do not enable a representation of the physical phenomena which dominate the breakwater’s vicinity.
{"title":"Modelling the morphodynamics in the vicinity of a submerged detached breakwater","authors":"M. F. Oliveira, Filipa S. B. F. Oliveira, A. Trigo-Teixeira","doi":"10.5894/rgci-n302","DOIUrl":"https://doi.org/10.5894/rgci-n302","url":null,"abstract":"The importance that coastal zones assume in Portugal implies a necessity for adequate responses to erosion-associated risks. One example is the coastal stretch located between the Mondego and Lis rivers’ inlets, which has been a frequent target of coastal protection measures, such as the construction of groins and seawalls. A possible alternative measure is a submerged detached breakwater, which can provide beach protection and enhance local surfing conditions. Thus, in this study the morphodynamics as a result of the wave breakwater bottom interaction in the active zone located in the vicinity of the structure was analyzed using two numerical models: a two dimensional, depth-averaged (2DH), Delft3D, and a one-line (coastline), LITLINE. The models were applied considering typical hydrodynamic forcing conditions (mean and most frequent waves) and morpho-sedimentologic conditions of the site. The sensitivity of the breakwater’s parameters to the beach morphological response was analysed using Delft3D. The coastline evolution was compared with LITLINE’s prediction. Delft3D is able to reproduce the dominant circulation patterns in the structure’s vicinity, and between the structure and the coastline, which influence its evolution. On the contrary, the LITLINE’s model simplifications do not enable a representation of the physical phenomena which dominate the breakwater’s vicinity.","PeriodicalId":37892,"journal":{"name":"Journal of Integrated Coastal Zone Management","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71208198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
F. Taveira-Pinto, P. Rosa-Santos, T. Fazeres-Ferradosa
{"title":"Nota Editorial - Gestão e planeamento integrado das zonas costeiras da CPLP - Parte 1","authors":"F. Taveira-Pinto, P. Rosa-Santos, T. Fazeres-Ferradosa","doi":"10.5894/rgci-n390","DOIUrl":"https://doi.org/10.5894/rgci-n390","url":null,"abstract":"","PeriodicalId":37892,"journal":{"name":"Journal of Integrated Coastal Zone Management","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71208068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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