Programa de Pós-Graduação em Biologia Ambiental - PPBA/IECOS
URI Permanente desta comunidadehttps://repositorio.ufpa.br/handle/2011/2606
O Programa de Pós-Graduação em Biologia Ambiental (PPGBA) é um programa do Instituto de Estudos Costeiros (IECOS) localizado no Campus Universitário de Bragança da Universidade Federal do Pará (UFPA) e foi criado ao nível de Mestrado em 1999 e implementado em 2000 e em 2007, ocorreu a aprovação do curso no nível de Doutorado. A maioria das dissertações e teses produzidas no PPBA é voltada para questões costeiras do nordeste paraense como foco central, mas sempre buscando a integração com ecossistemas vizinhos e correlacionados.
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Item Acesso aberto (Open Access) Capacidade de carga recreacional, percepção dos usuários e qualidade da água em três praias turísticas da Costa amazônica(Universidade Federal do Pará, 2011-08-29) SOUSA, Rosigleyse Corrêa de; COSTA, Rauquírio André Albuquerque Marinho da; http://lattes.cnpq.br/4504677939464624; PEREIRA, Luci Cajueiro Carneiro; http://lattes.cnpq.br/9883400404823218Item Acesso aberto (Open Access) Condições oceanográficas, ocupação territorial e problemas ambientais na praia do Atalaia (nordeste do Pará, Brasil)(Universidade Federal do Pará, 2012-06-28) PINTO, Ketellyn Suellen Teixeira; COSTA, Rauquírio André Albuquerque Marinho da; http://lattes.cnpq.br/4504677939464624; PEREIRA, Luci Cajueiro Carneiro; http://lattes.cnpq.br/9883400404823218The conservation and management of the coastal zone of the Amazon region demands special attention, given the richness of its natural resources. The aim of the present study was to evaluate the impact of natural events and human activities on Atalaia beach, situated in the NE of the Brazilian state of Pará and to develop guidelines for the implementation of coastal management programs. Data were collected between November, 2008, and November, 2010. Four sets of variables were assessed: (i) physical variables (climatology, hydrodynamics and morfodinâmica), (ii) hydrological variables (water temperature, salinity, pH, turbidity, dissolved oxygen and inorganics nutrients, chlorophyll a and thermotolerant coliform levels), (iii) urban development and (iv) spatial distribution of services and infrastructure. The results indicate that climate and hydrodynamical conditions were the main factors responsible for fluctuations in water salinity, turbidity, dissolved oxygen, inorganic dissolved nutrients, and chlorophyll a concentrations. The discharge of untreated domestic sewage was responsible for bacteriological contamination, although the rapid turnover of the high-energy hydrodynamic environment limited contamination by thermotolerant coliforms. This high hydrodynamic energy, primarily during the equinoctial spring tides, and the lack of urban planning, nevertheless generates other problems, such as coastal erosion. The study area is characterized by high rainfall rates (> 1900 mm during the rainy season), NE winds with mean speeds of up to 4.36 m/s in the dry season and 3.06 m/s in rainy season, macrotidal conditions (tidal range > 4.0 m), moderate tidal current speeds (up to 0.5 m/s), and significant wave heights up to 1.5 m. In March and June (rainiest months), ebb tide currents reached a maximal of 0.4 m/s. Tidal cycle was weakly asymmetric with the ebb tide lasting up to 6 hours 40 minutes. Wave energy was slightly modulated by the low tide due to wave attenuation on sand banks. Water temperature was relatively homogeneous (27.4ºC to 29.3ºC). Salinity varied from 5.7 (June) to 37.4 (November). The water was well oxygenated (up to 9.17 mg/L), turbid (up to 118 nephelometric turbidity units), alkaline (up to 8.68), and eutrophic (maximum of 2.36 μmol/L for nitrite, 24.34 μmol/L for nitrate, 0.6 μmol/L for phosphate, and 329.7 μmol/L for silicate), and it presented high concentrations of chlorophyll a (up to 82 mg/m³). The natural conditions observed in the present study indicate the need for a review of the hydrologic criteria used for the evaluation of beaches by national and international agencies and their adaptation to the reality of the Amazon Coast. The lack of a public sanitation system has led to bacteriologic contamination and the loss of water quality. With respect to morphodynamic state, dissipative conditions were found during high and moderate hydrodynamic energy (equinoctial and nonequinoctial condition), but in November the highest wave heights generated barred dissipative characteristic, whereas during the other months non-barred characteristics dominated. Thus, this study shows that the model proposed by Masselink & Short (1993) seems to be ideal to be applied to beaches with similar characteristics to the studied beach, where wave energy is modulated by the presence of sand banks in some stages of the tide.Item Acesso aberto (Open Access) Condições sócio-ambientais da bacia hidrográfica do rio Caeté (Pará, Brasil)(Universidade Federal do Pará, 2011-10-31) GUIMARÃES, Danielly de Oliveira; COSTA, Rauquírio André Albuquerque Marinho da; http://lattes.cnpq.br/4504677939464624; PEREIRA, Luci Cajueiro Carneiro; http://lattes.cnpq.br/9883400404823218The absence of watershed management in Amazon inhabited areas has affected its natural resources over the past years. For this reason, this study focuses on the social and environmental aspects of 18 rural communities and the effects of wastewater discharge originating from Bragança’s city on the water quality of the nearby Caeté Estuary and its tributary, the Cereja River, located in the Caeté River basin. The adopted methodology to characterize the socioeconomic profile and the living and dwelling conditions was based on structured and semi-structured questionnaires applied to the local population. The domestic trash production was quantified and a determination was made of the composition of the trash, in some communities, from samples of around 20% of the residences. Water quality analyses of the main wells that supply the studied communities were carried out based on the determination of physical and chemical variables (turbidity, real color, apparent color, pH, temperature, dissolved iron and dissolved nutrients) and bacteriological studies (termotolerant and total coliforms). Field measurements (hydrological, hydrodynamic and-or microbiological variables) were taken in the most urbanized zone from Caeté estuary and Cereja river to characterise the water quality of those environments. The main environmental impacts were identified, georreferenced, photographed, and mapped. Guidelines were proposed for the effective management of the natural resources of the Caeté Basin by the pertinent local authorities. The obtained results showed that the Caeté River basin has approximately 2,207 rural families (9,573 inhabitants) and the majority of the population has low income, low education and low living and dwelling conditions. The services and infrastructure are inadequate and there is a lack of potable water, basic sanitation, trash collection, school, medical assistance, etc. On the other hand, Bragança´s city has more than 72,621 inhabitants living on an area of approximately 16 km², is one of the oldest colonial settlements of the Amazon region. Both studied rivers receive large amounts of wastewater disposed by private households, hospitals, workshops and fish processing companies and they have showed microbial contamination. The lack of effective public policy has accentuated both environmental and socio-economic problems. The authors suggest several measures to improve the current situation, including: (i) the regulation of land use to reduce the environmental impact of the economic sector; (ii) implementation of management programs for the sustainable exploitation of natural resources (fish, crabs, clay, lumber); (iii) installation of public services, in particular piped water and sanitation; (iv) better monitoring and penalization of the illegal exploitation of natural resources.