Dissertações em Oceanografia (Mestrado) - PPGOC/IG
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Navegando Dissertações em Oceanografia (Mestrado) - PPGOC/IG por Orientadores "MONTEIRO, Sury de Moura"
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Item Acesso aberto (Open Access) Especiação do fósforo em rios urbanos: um estudo de caso dos rios Tucunduba e Tamandaré, Belém/Pará(Universidade Federal do Pará, 2023-05-24) COIMBRA, Marcus Vinicius Rodrigues; MONTEIRO, Sury de Moura; http://lattes.cnpq.br/4309806566068586; https://orcid.org/0000-0001-9449-7043Phosphorus (P) is a bioliminating macronutrient that plays an essential role in regulating ecosystem functions and primary productivity in marine and coastal environments. However, when in excessive concentrations, P assumes the role of a pollutant, negatively influencing the ecosystem and causing eutrophication. In Brazil, the problem is maximized in urban centers cut by canals, where there is an intensification of the process of changing the natural conditions of the environment. The speciation of P associated with hydrodynamic processes and the type of urbanization of the environment allows identifying the eutrophication status of these environments. Therefore, the present study seeks to promote understanding of the dynamics of P speciation in two urban rivers, the Tucunduba and Tamandaré rivers, located in the metropolitan region of Belém (Northern Brazil), with the objective of evaluating whether there is variation in P speciation. phosphorus in urban rivers at different time scales. To this end, samples of suspended particulate matter (SPM) were carried out using two different methodologies: the horizontal flow trap (portable traps) and the vertical flow trap (fixed traps). For the extraction of P, the sequential extraction method SEDEX was adopted, which allowed the extraction of five forms: P-Ex, P-Fe, P-Au, PDe and P-Org, in addition to P-Bio. In the Tucunduba river, Total-P concentrations ranged from 20.52 to 100.78 μmol.g-1, with predominance of the P-Fe fraction. In the Tamandaré River, concentrations ranged from 42.36 to 173.88 μmol.g-1 with P-Au predominance. Thus, it was possible to verify that the urban rivers Tucunduba and Tamandaré have high concentrations of P and its species. With these data, it is clear the need to deepen this type of study in these rivers and other urban rivers present in Belém, as well as the need for policies aimed at the recovery and preservation of these, in order to mitigate the problem involving phosphorus and restore the capacity ecosystems of these environments.Item Acesso aberto (Open Access) Especiação do fósforo em rios urbanos: um estudo de caso dos rios Tucunduba e Tamandaré, Belém/Pará.(Universidade Federal do Pará, 2023-05-24) COIMBRA, Marcus Vinicius Rodrigues; MONTEIRO, Sury de Moura; http://lattes.cnpq.br/4309806566068586; https://orcid.org/0000-0001-9449-7043Phosphorus (P) is a bioliminating macronutrient that plays an essential role in regulating ecosystem functions and primary productivity in marine and coastal environments. However, when in excessive concentrations, P assumes the role of a pollutant, negatively influencing the ecosystem and causing eutrophication. In Brazil, the problem is maximized in urban centers cut by canals, where there is an intensification of the process of changing the natural conditions of the environment. The speciation of P associated with hydrodynamic processes and the type of urbanization of the environment allows identifying the eutrophication status of these environments. Therefore, the present study seeks to promote understanding of the dynamics of P speciation in two urban rivers, the Tucunduba and Tamandaré rivers, located in the metropolitan region of Belém (Northern Brazil), with the objective of evaluating whether there is variation in P speciation. phosphorus in urban rivers at different time scales. To this end, samples of suspended particulate matter (SPM) were carried out using two different methodologies: the horizontal flow trap (portable traps) and the vertical flow trap (fixed traps). For the extraction of P, the sequential extraction method SEDEX was adopted, which allowed the extraction of five forms: P-Ex, P-Fe, P-Au, PDe and P-Org, in addition to P-Bio. In the Tucunduba river, Total-P concentrations ranged from 20.52 to 100.78 μmol.g-1, with predominance of the P-Fe fraction. In the Tamandaré River, concentrations ranged from 42.36 to 173.88 μmol.g-1 with P-Au predominance. Thus, it was possible to verify that the urban rivers Tucunduba and Tamandaré have high concentrations of P and its species. With these data, it is clear the need to deepen this type of study in these rivers and other urban rivers present in Belém, as well as the need for policies aimed at the recovery and preservation of these, in order to mitigate the problem involving phosphorus and restore the capacity ecosystems of these environments.Item Acesso aberto (Open Access) Governança ambiental participativa como ferramenta para construção de ações sustentáveis na costa paraense.(Universidade Federal do Pará, 2022) FARIAS, Lana Caroline Ferreira; SANTOS, Marcos Antônio Souza dos; MONTEIRO, Sury de Moura; http://lattes.cnpq.br/4309806566068586; https://orcid.org/0000-0001-9449-7043Item Acesso aberto (Open Access) Petrechos de pesca como resíduo praial em uma área de proteção ambiental na costa paraense(Universidade Federal do Pará, 2024-02-29) SILVA, Elaine Simone da Cruz Silva; LOUREIRO, Sarita Nunes; http://lattes.cnpq.br/1473112723704086; MONTEIRO, Sury de Moura; http://lattes.cnpq.br/4309806566068586; https://orcid.org/0000-0001-9449-7043Abandoned, Lost or otherwise Discarded Fishing Gear (ALDFG) during fishing activities represent a global problem. This equipment corresponds to at least 640,000 tons of waste that accumulates annually in the oceans and causes impacts on aquatic fauna such as entanglement, ingestion, injuries, ghost fishing and can also act as vectors of chemical substances. This is the first quantification of ALDFG on beaches in Northern Brazil. The study was carried out on beaches on Algodoal Island, which is an Environmental Protection Area (APA), with the aim of evaluating whether there is spatial and temporal variation in ALDFG on different beaches (Caixa d´água, Farol, Princesa and Cação), considering their different environmental characteristics, and check whether there is the occurrence of organisms associated with ALDFG. The ALDFG were collected in the rainy and dry seasons (2022), in quadrants of 100m² in 30 transects containing three points: high tide line, intermediate and low tide line. The density of ALDFG and an Environmental Impact Factor (FIA) were calculated, considering the type of ALDFG, its mass and the environment where it was found. In total, 459 ALDFG items were collected (248 in the dry season and 211 in the rainy season), totaling 13.14 kg, among which the main ones were fragments, electrical cables, ropes and fishing nets, with emphasis on the nylon type material and blue color. Overall, the beaches had an average density of 0.023 items/m² and 0.755 g/m² in the rainy season and 0.028 items/m² and 0.704 g/m² in the dry season, with a low environmental impact (FIA between 0-1). But points with high impacts were also observed (FIA = 10 and FIA = 9), in points with the presence of rocky outcrops and vegetation, respectively. On Caixa d'água beach there is the presence of juvenile mangroves in the intertidal environment and rocky outcrops, as well as, it is located close to the port for fishing vessels, therefore, it was the beach that presented the largest quantity of ALDFG (274 items), the highest mass (6.35 kg), the highest density (2.74 items/m² and 63.52 g/m²), and consequently the highest Environmental Impact Factor (FIA = 10). Furthermore, associated with the ALDFG, 1,543 organisms were recorded (1,380 in the rainy season and 163 in the dry season) belonging to the following groups, barnacles, bivalves, paguros, crabs, isopods, polychaetes, gastropods, anemones and sea fleas, the majority of which were found associated with ropes and polystyrene buoys. Fishing is a recognized source of ALDFG and the presence of these residues in an APA can cause several impacts to this ecosystem..Item Acesso aberto (Open Access) Petrechos de pesca como resíduo praial em uma área de proteção ambiental na costa paraense(Universidade Federal do Pará, 2024-02-29) SILVA, Elaine Simone da Cruz Silva; LOREIRO, Sarita Nunes; http://lattes.cnpq.br/1473112723704086; MONTEIRO, Sury de Moura; http://lattes.cnpq.br/4309806566068586; https://orcid.org/0000-0001-9449-7043Abandoned, Lost or otherwise Discarded Fishing Gear (ALDFG) during fishing activities represent a global problem. This equipment corresponds to at least 640,000 tons of waste that accumulates annually in the oceans and causes impacts on aquatic fauna such as entanglement, ingestion, injuries, ghost fishing and can also act as vectors of chemical substances. This is the first quantification of ALDFG on beaches in Northern Brazil. The study was carried out on beaches on Algodoal Island, which is an Environmental Protection Area (APA), with the aim of evaluating whether there is spatial and temporal variation in ALDFG on different beaches (Caixa d´água, Farol, Princesa and Cação), considering their different environmental characteristics, and check whether there is the occurrence of organisms associated with ALDFG. The ALDFG were collected in the rainy and dry seasons (2022), in quadrants of 100m² in 30 transects containing three points: high tide line, intermediate and low tide line. The density of ALDFG and an Environmental Impact Factor (FIA) were calculated, considering the type of ALDFG, its mass and the environment where it was found. In total, 459 ALDFG items were collected (248 in the dry season and 211 in the rainy season), totaling 13.14 kg, among which the main ones were fragments, electrical cables, ropes and fishing nets, with emphasis on the nylon type material and blue color. Overall, the beaches had an average density of 0.023 items/m² and 0.755 g/m² in the rainy season and 0.028 items/m² and 0.704 g/m² in the dry season, with a low environmental impact (FIA between 0-1). But points with high impacts were also observed (FIA = 10 and FIA = 9), in points with the presence of rocky outcrops and vegetation, respectively. On Caixa d'água beach there is the presence of juvenile mangroves in the intertidal environment and rocky outcrops, as well as, it is located close to the port for fishing vessels, therefore, it was the beach that presented the largest quantity of ALDFG (274 items), the highest mass (6.35 kg), the highest density (2.74 items/m² and 63.52 g/m²), and consequently the highest Environmental Impact Factor (FIA = 10). Furthermore, associated with the ALDFG, 1,543 organisms were recorded (1,380 in the rainy season and 163 in the dry season) belonging to the following groups, barnacles, bivalves, paguros, crabs, isopods, polychaetes, gastropods, anemones and sea fleas, the majority of which were found associated with ropes and polystyrene buoys. Fishing is a recognized source of ALDFG and the presence of these residues in an APA can cause several impacts to this ecosystem.Item Acesso aberto (Open Access) Transporte de resíduos sólidos flutuantes em rios urbanos dominados por maré na região Norte do Brasil(Universidade Federal do Pará, 2021-07-07) ROSA, Gabriel Pompeu; MONTEIRO, Sury de Moura; http://lattes.cnpq.br/4309806566068586; https://orcid.org/0000-0001-9449-7043The rivers that cut through metropolises are considered important ways for the waste generated on the continents to be transported to the oceans. Estimates of waste flows in rivers in the Amazon coastal zone remain uncertain due to the influence of hydrodynamic processes (tide, currents and flow), and above all, the lack of data on the type and amount of solid waste floating in the rivers. Therefore, the main objective of this study was to quantify and estimate the fluctuating waste fluxes at different time scales in tidaldominated rivers of the Amazonian coastal zone. Visual quantification took place over 12 hours (6 to 6 pm) in the flood and ebb tide stages, in the dry and rainy periods, in the rivers Acará, Guamá, Guajará, Tucunduba and Tamandaré. The estimate of waste transport in different tidal stages and seasonal periods was calculated considering the amount of waste in a time interval (hour, month and year). A total of 19,654 solid waste was quantified in the rivers studied, 71% of which was plastic materials. The residues from the rivers that cut through Belém (Tucunduba and Tamandaré) are exported to the rivers that surround the capital, while in these rivers, the residues present a bidirectional flow, suggesting imprisonment reflecting the influence of hydrodynamic processes (tidal current and flow). This study presents the first estimate of transport in rivers on the coast of Pará based on real observations, indicating an estimate of annual transport that varies between 3 and 549 tons/year.