Mestrado em Oceanografia Ambiental

URI Permanente para esta coleção

http://repositorio.ufes.br/handle/10/17532

Nível: Mestrado Acadêmico
Ano de início: 2007
Conceito atual na CAPES: 4
Ato normativo: Homologado pelo CNE(Portaria MEC Nº 609 de 14/03/2019) Publicação no DOU em 18/03/2019 Seç. 1, Pág. 63. Parecer CNE/CES nº 487/2018, Processo no 23001.000335/2018-51).
Periodicidade de seleção: Anual
Área(s) de concentração: Sistemas Costeiros e Marinhos
Url do curso: https://oceanografia.ufes.br/pt-br/pos-graduacao/PPGOA/detalhes-do-curso?id=1468

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A bifurcação da corrente do Brasil no embaiamento de Tubarão e seu papel na formação de vórtices ciclônicos
(Universidade Federal do Espírito Santo, 2014-10-13) Servino, Ricardo Nogueira; Azevedo, José Luiz Lima de; Ghisolfi, Renato David; Rigo, Daniel; Paiva, Afonso de Moraes
The transition region from the east to the southeast Brazilian coast, between 19°S and 21°S, shows remarkable geomorphological features that characterizes a complex shelf-break line. The Abrolhos Banks and the Vitória-Trindade Ridge’s (VTR) seamounts are irregularities that promote influences on the system of western boundary currents in this region, specially to the Brazil Current (BC), inducing its meandering and the developing of eddies locally. Confined by these structures around it, the Tubarão Bight (TB) is a region in front of Vitória (20.3°S; 40.3°W) that shelters cyclonic eddies which formation was investigated in this work as influenced by a bifurcation of the BC in this site. The bifurcation of a geostrophic current is a geophysical process of interaction between a jet and a continental boundary that results in the formation of two secondary jets – one in each direction – and that can be responsible for the developing of eddies inside partially confined oceanic basins (e.g Alboran Sea and Sea of Japan). The occurrence of this process was found inside the TB following the impinging of the BC on its continental slope, identified based on numerical modelling results derived from a high-resolution and refined topography simulation. To the extent of our knowledge, this is the first description of such process in this region. This work’s findings suggest that the secondary jet deflected to the TB’s interior is necessary to the developing and maintenance of two kinds of eddies with different size, duration and date of occurrence. These eddies’ characteristics and the bifurcation’s itself were significantly linked to the flowing pattern of the BC through the VTR’s seamounts.
A correlação da cadeia produtiva da pesca com as comunidades pesqueiras da região costeira do Espírito Santo
(Universidade Federal do Espírito Santo, 2018-08-30) Paz, Micael Lincoln Cardoso; Fernandes, Luiz Fernando Loureiro; Zappes, Camilah Antunes; Dadalto, Maria Cristina
A corrente do Brasil no Embaiamento de Tubarão : Oceano Atlântico sudoeste
(Universidade Federal do Espírito Santo, 2014-10-17) Martins, Tayná Rosa; Silva, Meyre Pereira da; Ghisolfi, Renato David; Dias Júnior, Camilo
A dinâmica da camada de mistura oceânica da porção Abrolhos-Campos da costa brasileira
(Universidade Federal do Espírito Santo, 2015-12-21) Salviato, Júlia Tavares; Ghisolfi, Renato David; Bastos, Alex Cardoso; Mill, Guilherme Nogueira
The oceanic surface mixed layer is the link by which the ocean and atmosphere are coupled. The characteristics of the mixed layer determine the air-sea fluxes of heat and gases affecting this way the climate. Additionally, biogeochemical cycles and biological productivity are profoundly affected by the mixed layer depth, which controls the amount of nutrient input to the euphotic zone through vertical mixing and entrainment. Improved understanding of these processes depends in some measure on our understanding of mechanisms and dynamics of the mixed layer. Using temperature and salinity from WOA, heat fluxes from OAFlux Project (Objectively Analyzed air-sea Fluxes) and wind stresses from Comprehensive Ocean-Atmosphere Data Set (COADS) the spatial pattern of the seasonal variability of mixed layer in the Abrolhos-Campos region is investigated, as well as the importance relative of heat and momentum fluxes and Ekman pumping to the seasonal heat-budget of the mixed layer. To complement the above analysis and to investigate mixed layer dynamics at suprainertial scale, time series from October 2011 to October 2012of air-sea fluxes and upper ocean response, obtained from PIRATA mooring at 19oS and 34oW were also analyzed. The seasonal cooling and deepening of the mixed layer is driven primarily by heat fluxes with larger contribution from the short wave radiation. By the end of the winter and spring, strong wind stresses are important to maintain the mixed deep. Ekman pumping velocities play only a small role in the upper ocean evolution in the region of study. In general, the results of the analysis of PIRATA time series confirm those from the climatological data sets. Furthermore, spectral analysis of the mixed layer computed from the PIRATA time series revealed a sharp energy peak at about 12 and 24 hours, suggesting the contribution of internal tides to oceanic mixing.
A influência do Cânion Submarino Watu Norte na ressurgência costeira da Plataforma Continental do Espírito Santo
(Universidade Federal do Espírito Santo, 2024-10-07) Brasileiro, Gabriela Corrêa; Fonseca, Sabrina Aparecida Ramos da ; https://orcid.org/0000-0001-6258-8901; http://lattes.cnpq.br/0149132306804193; Ghisolfi, Renato David ; https://orcid.org/0000-0001-9695-6442; http://lattes.cnpq.br/3746397954560718; https://orcid.org/0009-0001-1901-7887; http://lattes.cnpq.br/4116434134134207; Oliveira, Kyssyanne Samihra Santos; https://orcid.org/0000-0003-2007-1984; http://lattes.cnpq.br/0954756171047598; Aguiar, Alessandro Lopes ; https://orcid.org/0000-0002-4643-6745; http://lattes.cnpq.br/9283763075551498
This study investigates the role of the Watu Norte Submarine Canyon in coastal upwelling on the Espírito Santo Continental Shelf (ESCS). A preliminary thermohaline characterization and water mass distribution investigation were conducted to understand the region. Unlike previous studies relying on numerical modeling, remote sensing, or sporadic in situ data, this stage of the work used temperature and salinity data collected from 2018 to 2023 during 40 oceanographic cruises. These data allowed an unprecedented seasonal description of the thermohaline structure and water mass distribution in the region. The analysis revealed distinct regions on the shelf, with seasonal thermal stratification and the presence of SACW to the south of the Doce River mouth throughout the year, while homogeneity prevailed to the north. To evaluate the canyon’s influence on the observed patterns, semi-idealized numerical simulations were conducted. These simulations indicated that the canyon significantly affects SACW distribution on the ESCS, enhancing water transport onto the shelf and facilitating the intrusion of colder waters into areas adjacent to the canyon. The canyon’s orientation and dimensions were crucial to these interactions. A dimensional analysis of Rossby numbers and the canyon’s length-to-width ratio suggested that the current over the canyon tends to break geostrophic balance, generating an intense flow toward the canyon head. Although this dynamic occurs during coastal upwelling events, the opposing current directions at the edges relative to the surface flow resulted in an anticyclonic circulation pattern, observed from the shelf break depth up to 30 meters above the canyon head. The circulation intensified as the flow compressed while moving toward shallower isobaths, crossing the canyon head. These findings highlight the importance of submarine canyons in coastal dynamics and the need for models that incorporate detailed bathymetry to capture flow-bathymetry interactions, which have implications for protected area management and oceanic pattern prediction
Análise da estruturação da paisagem costeira do Espírito Santo
(Universidade Federal do Espírito Santo, 2014-11-28) Cancian, Tobias Betzel; Barroso, Gilberto Fonseca; Quaresma, Valéria da Silva
Análise da resposta acústica em sedimentos marinhos
(Universidade Federal do Espírito Santo, 2014-04-13) Menandro, Pedro Smith; Quaresma, Valéria da Silva; Bastos, Alex Cardoso; Ghisolfi, Renato David; Ayres Neto, Arthur
Submarine geoacoustics helps in understanding the behavior of propagation and attenuation of sound in sediment, providing an information set which assists the major data interpretation approaches. The detection of muddy deposit through high resolution acoustic records is generally easy, usually appearing as free reflection layers. However, this acoustic response depends on the frequency used and other characteristics of the deposit, even of the water column. The dynamics of these muddy layers may have influence in many areas, from engineering and harbor maintenance, to biology and studies of impact on benthic biota. The development of a rapid and efficient mapping method for these deposits seems to be a demand for knowledge advance of the processes involved in the transport, deposition and suspension. Thus, this study has two main approaches divided into two independent studies: i) investigate how the acoustic signal response from different sources changes with the frequency and sediment physical properties (grain size and density), and ii) associate variations observed in the acoustic records with sediment mobility over a tidal cycle. The dataset consists of high-frequency geophysical records ( 3.5, 33 and 210 kHz ) , sediment physical properties, in situ density , hydrodynamics and distribution of suspended particulate matter, which were collected at the North Channel of Amazon River . The first chapter showed that different survey methods at the same area can provide different results. Furthermore, the frequency and density were important properties to understand the relationship between surface sediment and acoustic features. The second chapter was an attempt to evaluate sediment dynamics through acoustic system, and showed that the changes in the processes of sediment transport were recognized by the ADCP and OBS allowing to distinguish the acoustic echo sounder records and to interpret sedimentary dynamic processes.
Análise espacial da distribuição da comunidade zooplanctônica, com ênfase nas larvas de braquiúros em dois estuários do norte do Espírito Santo
(Universidade Federal do Espírito Santo, 2024-10-02) Morais, Luana Souza de; Tognella, Mônica Maria Pereira; https://orcid.org/0000-0002-1521-8251; Silva, Maurício Hostim; Belúcio, Lucinice Ferreira
Brachyurans represent the most abundant group of meroplankton, exhibiting a variety of behavioral habits and playing a crucial ecological role as decomposers. Monitoring zooplankton communities is a valuable tool for detecting environmental changes and contributing to biodiversity conservation on a global scale, due to the trophic relevance of this group. Given their abundance, diversity, and short life cycle, zooplankton are considered excellent environmental bioindicators, capable of providing significant information about the health of marine ecosystems. The present study involves sampling zooplanktonic organisms through a 10-minute surface tow using a plankton net (250 µm mesh), in addition to collecting in situ abiotic data during each tow. Ecological indices of diversity, evenness, and richness were calculated, as well as the parameters: density, abundance, and frequency of occurrence by taxon. The results were statistically analyzed using the non-parametric Kruskal-Wallis tests and Spearman’s correlation to assess the significance among samples. The study of the São Mateus River Estuary revealed considerable variations in salinity and conductivity data, related to tidal patterns. Points closer to the estuary's mouth showed higher salinity levels, as expected for this type of estuary, indicating direct marine influence. In contrast, pH and temperature showed little variation. The zooplankton community, predominantly composed of Brachyura, exhibited coastal characteristics, with brachyuran larvae reaching higher diversity at specific points (M7 and F8). The analysis of ecological indices may be explained as a response to the impact of waste from the Fundão dam collapse that reached the mouth of the Doce River, affecting the zooplankton community in the northern coast, as corroborated by Principal Component Analysis coefficients. The study highlights the complexity and importance of considering multiple factors when assessing the environmental quality of the estuary.
Aspectos etnobiológicos e etnoecológicos na pesca artesanal em três municípios do litoral sul do Espírito Santo
(Universidade Federal do Espírito Santo, 2018-03-16) Oliveira, Ana Carolina Machado de; Zappes, Camilah Antunes; Braga, Adriane Araújo; Martins, Agnaldo Silva; Preto, Bruno de Lima
This study aims to relate the traditional knowledge of fishermen to the scientific literature, as regards ethnobiological and ethnoecological aspects of decapod crustaceans caught in artisanal fishing on the Southern coast of Espírito Santo. The research was done in Anchieta, Piúma and Marataízes cities, South coast of Espírito Santo, and data collection occurred between September 2016 and February 2017. The ethnografic method used consisted of: 1) participant observation method; 2) semi-structured interviews and questionnaires; 3) snowball method; 4) method of triangulation of results. A total of 92 artisanal fishermen were interviewed, all aged between 18 and 71 years. In Anchieta city the target species of the fishing are the sea-bob shrimp, pink shrimp and white shrimp, and in Piúma and Marataízes only the sea-bob shrimp. The carcinofauna, captured in the three municipalities, is composed mainly of crabs and swimming crabs. The fishermen demonstrated knowledge about the biology of the species of crustaceans captured, differentiating the juvenile stages of the adults, as well as an occurrence of sexual dimorphism, once they recognize the copulatory organ of male shrimps (petasma) and in the females the presence of a greenish color in the dorsal region characterized by ovary development. In crabs and swimming crabs, the respondents reported that the shape of the abdomen is different between the sexes. The habitat of decapod species has also been described. Fishermen considered crustaceans to be important for the environment because: 1) they play roles in the dynamics of the marine community, in the food chain and in the processes of organic matter cycling and energy flow; 2) are important for consumption; and 3) are used for bait and comercialization. When questioned about the fisheries closure season, fishermen consider important but incorrect for the region, which indicates the need of greater dialogue between enforcement agencies and fishing communities. The information of this research corroborates with the literatura and can function as a tool for the management of fishery resources, and on the decrease of the impact on the populations of the target species and fauna by-catch, aiming at the sustainability of fishing and the valuing of coastal communities of Southern Southern coast of Espírito Santo.
Aspectos fisiográficos, sedimentológicos e estruturais do fundo marinho em uma área da porção central da bacia do Espírito Santo
(Universidade Federal do Espírito Santo, 2012-12-17) Tschiedel, Flávio Eduardo; Bastos, Alex Cardoso; Silva, Cleverson Guizan; Quaresma, Valéria da Silva
The development of industrial activity in the state of Espírito Santo (Brazil) in recent years has been highlighted in offshore regions. The government agency that controls the activities of oil exploration and production in sedimentary basins in Brazil requires, for activities offshore, the geological knowledge of the seabed as well as geological structures related to it that may cause geological and environmental risk in the future. Engineering works in these areas are related to the development of the activity of exploration and production of oil primarily. The lack of knowledge of buried geological features and geological aspects of the seabed may hinder or impede the execution of projects in this activity due to unforeseen peculiarities. This work includes the identification of physiographic features of the seabed in the Continental Shelf and Slope areas in the Espírito Santo sedimentary basin. The area is about 45km away from the coast, adjacent the Doce River mouth. In order to reach the target, this study uses various analysis tools (2D and 3D seismic, high resolution seismic, seabed samples and wells) aiming at identifying seabed characteristics, involving structural and sedimentological aspects. It also presents a brief discussion about the applicability of the use of geophysical methods in this study, and a comparison of the uses of geophysical methods and their ability to identify the physiographic features of the seabed in the area of this project. At the end a predictive map of physiographic characteristics of the seabed is presented, identifying areas of salt influence and geological faults, channels and others. The area was subdivided into three regions, taking into account the predominance of physiographic features and geological risks they present.
Avaliação da corrente do Brasil em um cenário de mudanças climáticas utilizando o Modelo Brasileiro de Sistemas Terrestres (BESM)
(Universidade Federal do Espírito Santo, 2021-08-27) Koppe, João Victor Carminati; Ghisolfi, Renato David; https://orcid.org/0000000196956442; http://lattes.cnpq.br/3746397954560718; https://orcid.org/; http://lattes.cnpq.br/6289141829298203; Gonçalves, Iury Angelo; https://orcid.org/0000-0002-4367-5943; http://lattes.cnpq.br/4877304814912378; Zavialov, Peter; https://orcid.org/0000-0002-3712-8302; http://lattes.cnpq.br/
This work evaluates the performance of ocean dynamic simulations reproduced by BESM-OA2.5 for South Atlantic Ocean in históric period and analyses its predictions for the end of 21 century based on RCP8.5 climatic change scenario. The BESM is the Brazilian Earth System Model -Ocean Atmosphere versão 2.5 (BESM-OA2.5) developed by National Institute of spatial research (INPE) that composed the Coupled Model Intercomparison Project phase 5 (CMIP5) for climatic change scenarios of Intergovernmental Panel on Climate Change (IPCC). In this evaluation were analysed equator parallel sections in different latitudes integrated on water column the mean velocity fields, temperatures, volumétrico and thermal fluxes throughout 255 years of simulation using two experiments, the históric (𝐶𝑂 2históric emissions) and RCP8.5 - Representative Concentration Pathway- (𝐶𝑂 2 projected emissions throughout 21 century). Both experiments were compared to each other for key períods of RCP8.5 experiment. The obtained results for the historic experiment did reproduce satisfactorily the large scale flow of western boundary of South Atlântic (SA) and Brazil Current (CB). Towards the end of the century, changes in the velocity and temperature of the evaluated sections were observed, which resulted in changes in volumetric and thermal fluxes at the end of the 21st century. There was an increase in transport at the highest latitudes assessed, a decrease in transport at the lowest latitudes assessed, and loss of seasonal signal and energy from transport events. Additionally, a decrease in the volumetric flux in the transoceanic section at 25°S and an increase in the heat flux exported northward was observed. These alterations are related to the velocity anomalies of the superficial and deep currents of the Atlantic Southern Revolution Cell (AMOC).
AVALIAÇÃO DA ERODIBILIDADE DE SEDIMENTOS COESIVOS COM DIFERENTES TEORES DE AREIA
(Universidade Federal do Espírito Santo, 2022-08-24) Bandeira, Mayara de Oliveira; Quaresma, Valeria da Silva; https://orcid.org/; http://lattes.cnpq.br/9423011006200936; https://orcid.org/; http://lattes.cnpq.br/; Oliveira, Kyssyanne Samihra Santos; https://orcid.org/; http://lattes.cnpq.br/0954756171047598; Neto, Jose Antonio Baptista; https://orcid.org/; http://lattes.cnpq.br/
abstract
Avaliação da qualidade ambiental de áreas afetadas por rejeitos de mineração após quatro anos: uma abordagem na caracterização da carcinofauna bentônica
(Universidade Federal do Espírito Santo, 2021-07-29) Marques, Thaciana Fabiola; Braga, Adriane Cristina Araújo; https://orcid.org/0000-0002-2790-8794; http://lattes.cnpq.br/4795754965416046; http://lattes.cnpq.br/5359753769024951; Vergilio, Cristiane dos Santos; https://orcid.org/0000-0003-1711-7320; http://lattes.cnpq.br/6012595909105903; Longo, Leila de Lourdes; https://orcid.org/0000-0002-5023-1486; http://lattes.cnpq.br/2447917111421642
The collapse of the Fundão dam (Mariana-MG) released a large number of mining tailings along the Rio Doce, reaching its mouth in the Atlantic Ocean. In this context, this work aimed to evaluate, spatially and temporally, the ecological descriptors and the relationship of macrobenthic carcinofauna with abiotic factors, including those that can be considered indicatives of the presence of mine tailings from the Fundão dam collapse., from the continental shelf of Espírito Santo to southern Bahia, during the period from October/2018 to July/2019, totaling four campaigns: spring, summer, autumn, and winter. Sectors: Abrolhos (AB), Norte (NO), Foz do Rio Doce (FZ), Costa das Algas (CA), and Sul (SU). In the laboratory, each sample was washed and, with the assistance of a magnifying glass, the crustaceans were sorted and identified at the lowest possible taxonomic level, the richness of taxa, density (ind./mL), and diversity (H') were across sectors, campaigns and depths. The relationship of abiotic factors with the density of the crustacean taxa in the sectors, campaigns, and depths was verified by means of redundancy analysis (RDA). The highest values of richness and diversity occurred in the AB and SU sectors, which differed significantly from the FZ (p < 0.05). In addition, these descriptors had their highest values in summer and winter, and in the greatest depths (p < 0, 05). Although the highest density was registered in the FZ sector, in the autumn season and in greater depths, there were no significant differences. In the FZ sector, the highest OM contents were registered, as well as the highest percentage of sludge and metals, mainly Barium, Copper, and Nickel, which possibly presents a direct relationship with the ore tailings from the collapse of the Fundão dam. On the other hand, the CA, AB, and SU sectors were positively associated with higher CaCO3 contents. The results for each sector revealed differences in the structure of the community, where Amphipoda predominated in FZ, AB, and NO sectors, Ostracoda in the CA sector, and Copepoda and Ostracoda in the SU sector, showing that the varieties of the studied area influence the preference of organisms by environmental conditions. The results attenuated a low richness, diversity, and possible increase in density in the FZ sector, due to the presence of Phoxocephalidae (Amphipoda), suggesting a certain resistance and capacity of this family in environmental changes, such as high metals observed in this sector. Thus, these results can show that even four years after the collapse of the Fundão dam, the FZ sector still presents a high degree of contamination suffered by mining tailings, which directly affected the structuring of the benthic crustacean community, especially in places close to the mouth of the Rio Doce. In this context, works related to the characterization of macrobenthic carcinofauna are essential to understand the ecological performance of organisms in places, as well as their relationship to disturbances caused by anthropic action, such as the rupture of the mining dam, which can also help in monitoring and assessment of environmental impacts.
Avaliação do estado trófico de um sistema estuarino tropical a partir do índice trófico TRIX
(Universidade Federal do Espírito Santo, 2014-06-27) Bertoldi, Larissa; Barosso, Gilberto Fonseca; Quaresma, Valéria da Silva; Dias Junior, Camilo; Chícharo, Luis Manuel Zambujal
The estuarine ecosystem is located in the interface continent - ocean, with hydrodynamic, morphological, biological and sedimentary characteristics influenced by freshwater discharge from the drainage basin, and oceanographic processes. The Piraquê–açu and Piraquê–Mirim’s Estuarine System (SEPAPM) (7,48 km2), located in the district of Santa Cruz (Aracruz, ES), is predominantly situated in the valleys of Formação Barreiras. The SEPAPM has great importance, providing many goods and services to the local economy, as well as having a predominantly natural setting with no history of significant dredging and engineering works. Thus, is necessary to investigate it characteristics understanding the ecological processes to contribute to coastal zone management. Therefore, this study aimed to assess the trophic conditions of SEPAPM through environmental variables chlorophyll a, total phosphorus (TP), dissolved inorganic nitrogen (DIN), percentage of oxygen combined into a Trophic State Index (TRIX). Influence of river discharge were considered on TRIX. Samples were taken at 10 sampling stations in the rainy and dry periods of 2012. Point data variables were interpolated in Geographic Information System - GIS using the Spline method. As a result, the trophic condition of SEPAPM show eutrophic trends (TRIX > 6). The SEPAPM showed significant spatial variation of chlorophyll a and salinity in the rainy season and percentage of oxygen and salinity in the dry season; Significant temporal variation of TP, dissolved inorganic nitrogen, oxygen percentage and salinity. There was a negative significant correlation using the Spearman test between chlorophyll a and salinity (dry and rainy), chlorophyll a and flow (dry), TP and salinity (dry), NID and percent oxygen (dry), TRIX and percent oxygen (dry), salinity and flow (dry and rainy) chlorophyll a and oxygen percentage (rainy), TF and NID (rainy) and TRIX and TP (rainy). There was a significant positive correlation for percentage of oxygen and chlorophyll a (dry), TRIX and NID (dry and rainy), oxygen percentage and flow (rainy), salinity and TRIX (rainy) and TP and flow (rainy). This work appears as a management tool for the steering committee of the North Coast Regional Hydrographic Center.
Avaliação do ITS1 e do ITS2 como barcode para Calanoida (Crustacea, Copepoda) marinhos e como marcador complementar para filogenia do grupo
(Universidade Federal do Espírito Santo, 2014-06-06) Rocha, Gustavo Martins; Fernandes, Luiz Fernando Loureiro; Farro, Ana Paula Cazerta; Milstein, Daniela
Calanoida is the most abundant copepod Order in the world, having recognized ecological and scientific importance. But the accurate morphological taxonomic identification of this animal group is not simple, requiring years of experience and practice, especially when working with specimens in larval and juvenile stages. Thereat, molecular identification through DNA barcode is an important tool for assistance the identification of these organisms on the species taxonomic level. The mitochondrial marker Cytocromo Oxydase I (COI) is considered standard for molecular identification of most animal groups, but it doesn’t seems as efficient for calanoid copepods. This study aimed to test the two subunits of the nuclear molecular marker Internal Transcribed Spacer (ITS1 and ITS2) as a barcode for this animal group. We tried to sequence ITS1, ITS2 and COI from 105 individuals representing 14 families of Calanoida. Sequencing success rates of nuclear markers were much higher than those from COI (98%, 91% and 34%, respectively). In addition, it was found a gap between intraspecific and interspecific genetic distances for the nuclear molecular markers that allow grouping 100% of the sampled individual’s sequences with other individuals’ from the same species in monophyletic clades for ITS2 and with one exception for ITS1. Phylogeny of Calanoida, based on ITS1-ITS2-COI concatenated sequences, proved to be congruent with what has already been established in relation to the evolutionary relationships of species in the group. Despite the need for additional studies to confirm the patterns found here, we can conclude, based in our results, that both ITS1 and ITS2 are molecular markers that are easy sequenced and have enough variation to be used for DNA barcoding of marine calanoids.
Avaliação do processo de assoreamento no Porto de Tubarão, Vitória-ES
(Universidade Federal do Espírito Santo, 2021-03-03) Neves, Rafael Carvalho; Quaresma, Valeria da Silva; https://orcid.org/0000-0002-7470-6642; http://lattes.cnpq.br/9423011006200936; https://orcid.org/0000-0002-2192-1517; http://lattes.cnpq.br/6247459345761861; Gallo, Marcos Nicolas; https://orcid.org/0000-0001-5650-648X; http://lattes.cnpq.br/8448978289225440; Sá, Fabian; https://orcid.org/0000000339645685; http://lattes.cnpq.br/9329106914297651
The importance of Brazilian waterways and ports for the country's foreign trade and the growing demand for improving port infrastructure to increase Brazil's competitiveness in the world inspired the main objective of this study to evaluate the siltation process in the Tubarão Port, Vitória-ES. Due periodic maintenance dredging necessity to keep its maritime area navigable, the understanding improvement of sedimentary dynamics in Tubarão Port area is imperative, in order to provide scientific basis for discussions, such as planning dredging projects and navigation safety. Starting from the integrated analysis of historical precipitation in Vitória-ES, flow in the Santa Maria da Vitória River and hydrodynamic and sedimentary data from Vitória Bay (BV) and Espírito Santo Bay (BES) and later integrating with bathymetric evolution between 2015 and 2018 at Tubarão Port, it was possible to identify the resulting flow from BV to BES as the main source of sedimentary material in the region. During the low precipitation period, between June 2015 and April 2017, there was a lower siltation rate in the port area (0.02 m/year) due the small sedimentary material supply from BV and the adjacent coastal region. While between May 2017 and April 2018, the highest siltation rate was observed in the port area (0.35 m/year) due the increased rainfall and currents acting preferentially to NE/E at BES, associated with rise of SE/S waves frequency. The sedimentological and geochemical results of the 91 superficial sediment samples collected at BES and the surrounding areas were analyzed by Cluster Analysis with distribution the samples into 4 statistically different groups. The high levels of organic matter (MO), total organic carbon (COT), total nitrogen (NT) and nitrogen stable isotope (δ15N), such as high carbon to nitrogen (C/N) ratio observed in all BV and Passagem Channel (CP) areas suggest the anthropized terrestrial sediment predominance in this region. At BES, the sediment found in inner portion near Camburi beach is trapped in this region due the action of rock outcrop, present in the central region, as an obstacle to sediment effective exchange between the innermost and outside bay areas. In central and external areas of BES, there is a mix between marine and terrestrial sediment from BV. The COT and NT high values found in the sediment inside the port’s channel also suggest the MO and fine sediment contribution from BV to the Tubarão Port area. Results and discussions presented in this study show the continuous meteo-oceanographic and sediment quality monitoring importance as basis for understanding the complex sediment dynamics observed in port regions.
Caracterização da circulação e balanço do material particulado em suspensão (MPS) na desembocadura da baía de Vitória/ES
(Universidade Federal do Espírito Santo, 2012-03-28) Garonce, Flávia Acypreste Alfredo; Quaresma, Valéria da Silva; Guerra, Josefa Varela; Ghisolfi, Renato David
Understanding estuarine dynamics is an extremely arduous task due to the numerous variables that can influence the system, such as tide, river flow, wind, morphology, among others. However, such studies are necessary due to the large use of this environment for navigation, creation of ports, fisheries, tourism, and a range of goods and services it provides. Thus, this study aimed to contribute to the knowledge of hydrodynamics and flow properties (SPM and salt) in the mouth of the estuary of the Bay of Vitoria. For this purpose measurements were made in four tidal cycles, two in spring tides and two in the neap tides, with seasonal variations between summer (rainy season) and winter (dry season), salinity and temperature with a CTD (OBS 3A) currents with a ADCP (River Surveyor). For the analysis of SPM water samples were collected. This water samples were filtered to obtain the concentrations thereof. From our analysis, this section of the estuary was classified according to the diagram Hansen and Hattray (1966) as the type 1a in springs tide and 2b in neap tide during dry season and 2b in neap tide rainy season. This corroborates the findings using Richardson layer number where the highest values were found during the neap tide rainy, it was the cycle that showed greater stratification. Although there were variations between the dry and rainy season tides was the main forcing controlling hydrodynamic processes in the estuary. Salt and MPS, there were predominantly imported, except for the spring rainy cycle, were exported SPM. In addition, the dynamics of the suspended material showed a nonconservative behavior, with no association with the current processes although lags interfere in the transport, it may be observed due to residual tidal currents (asymmetry tide) is mainly toward the sea. Furthermore, it was realized that the tide was the most active in providing through the suspension of the bottom, and the process of tidal pumping that allowed transport into the estuary.
Caracterização de habitats em áreas de proteção marinha através de imageamento com veículo de operação remota (ROV)
(Universidade Federal do Espírito Santo, 2019-03-21) Silva, Diego Bezerra de Melo e; Fernandes, Luiz Fernando Loureiro; Bastos, Alex Cardoso; Maia, Luís Parente
Studies of characterization of benthic communities and habitats are of paramount importance in the elaboration of management plans and in the preservation of marine biodiversity, especially in areas of marine protection, regions considered of relevant ecological interest. At the Santa Cruz Wildlife Refuge (RVS) and the Environmental Protection Area (APA) in the state of Espirito Santo, there are several potentially anthropogenic activities that cause impacts, such as fishing activity and exploration and production of oil and gas occurring near the region. The objective of this study was to characterize the main habitats in the region of the RVS of Santa Cruz and the APA Costa das Algas, using remotely operated vehicle (ROV) imaging techniques and its correlation with the sedimentological material. The records were obtained through 50 collection stations distributed along the continental shelf, from the 10 m isobath. Five habitats were identified and described as Terrestrial Sands, Carboniferous Gravels, Rodoliths and Gravels, Reefs and Rodolites and Laterites (Hardground), refining the level of knowledge in relation to that already existing in past and more regional studies of the study area. It was possible to identify a greater abundance in the habitat described as Reefs and Rodolites, located in the deeper portion of the APA Costa das Algas, having as opposite the Terrestrial Sands habitat, mostly comprising at the RVS of Santa Cruz. The method used proved to be satisfactory for this type of characterization, which can be replicated in studies of more sensitive areas. The results obtained in the present study will be able to subsidize the managing organ of the two protected areas in the elaboration of their respective management plans.
Caracterização e distribuição dos minerais pesados ao longo da plataforma continental do Espírito Santo
(Universidade Federal do Espírito Santo, 2018-05-29) Costa Junior, Adeildo de Assis; Turbay, Caio Vinícius Gabrig; Quaresma, Valéria da Silva; Bastos, Alex Cardoso; Ferreira Júnior, Paulo Dias
The heavy minerals have a density greater than 2,8 g/cm3 , upper to that of quartz (2,65 g/ cm3 ) and appear as accessory minerals in sedimentary, igneous and metamorphic rocks. The heavy minerals were used as a tool to better understand the past and present sedimentary processes of the Continental Shelf of Espírito Santo (CSES). The study area was subdivided into 3 sectores: Paleovalley Shelf, Doceriver Shelf and Abrolhos Shelf. The sediments found in the CSES are siliciclastic, biodetritic and mixed distributed in a peculiar manner respecting the different sedimentological characteristics governed by accommodation and supply regimes. Fifteen different species of heavy minerals were identified in the CSES: Ilmenite, limonite, sillimanite, zircon, tourmaline, epidote, monazite, hematite, magnetite, grenade, staourolite, rutile, titanite, andaluzita and kyanite. The deposits of heavy minerals with higher concentrations are found in the Doce river Shelf and Abrolhos Shelf, presenting values of maximum content of 3,6%. ZTR index values (zircon, tourmaline and rutile) associated with the interpretation of bathymetric profiles and geological knowledge on CSES have led us to believe that the most expressive heavy mineral deposits are composed of relict sediments possibly from past river transport associated with the relative lowering of sea level in the Late Quaternary.
Classificação dos impactos biofísicos e sociais de uma orla em diferentes níveis de urbanização
(Universidade Federal do Espírito Santo, 2023-11-10) Silva, Karlany Nascimento Brandão da; Albino, Jacqueline; http://lattes.cnpq.br/1609264897582182; https://orcid.org/0009-0007-7288-2734; http://lattes.cnpq.br/6710809916927614; Bulhões, Eduardo Manuel Rosa; Barroso, Gilberto Fonseca; http://lattes.cnpq.br/8505958970169325
The coastal zone is a highly dynamic environment, driven by both natural physical processes and urban development along the coastline. In Brazil, 26.6% of the population lives in coastal municipalities (IBGE, 2011), making the coastline a target of high demand due to its economic, cultural, and social potential. The unregulated occupation of coastal environments can result in significant impacts on ecosystems and coastal communities. In this context, the objective of this study is to classify the biophysical and social impacts, understanding the susceptibility of coastal ecosystems and the vulnerability of the local community in the municipality of Marataízes, ES, in the face of coastal erosion and inundation issues. The specific objectives include analyzing the evolutionary state of the coastline over a 15-year period – from 2005 to 2020. Additionally, the study aims to comprehend the role of social actors in addressing the problem and to analyze, based on the science of affect, how the sense of belonging can influence decision-making regarding erosive issues in the coastal zone of Marataízes, ES. To achieve this, the methodology employed is based on the collection of secondary data, such as online news reports that describe events and consequences of coastal erosion in the municipality. Furthermore, it was necessary to conduct photographic mapping of the coastline, resulting in visual documentation of changes along the coastline over time. To understand the perspectives and influences of social actors, open interviews with predetermined questions were conducted, targeting local residents, tourists, business owners, and representatives of public agencies. The collected and analyzed data can provide valuable insights into the perceptions, concerns, and actions of stakeholders. Thus, this study has the potential to contribute to a broader understanding of the complex interactions between unregulated coastal urbanization, environmental and social impacts of coastal erosion, and the influence of social actors on decisionmaking.

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