Teses em Ciências Ambientais (Doutorado) - PPGCA/IG
URI Permanente para esta coleçãohttps://repositorio.ufpa.br/handle/2011/9341
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Navegando Teses em Ciências Ambientais (Doutorado) - PPGCA/IG por Orientadores "CATTANIO, José Henrique"
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Item Acesso aberto (Open Access) Análise dos fluxos turbulentos de CO2 e energia entre o ecossistema aquático e atmosfera na Flona de Caxiuanã-PA(Universidade Federal do Pará, 2019-02-26) SOUZA FILHO, José Danilo da Costa; CATTANIO, José Henrique; http://lattes.cnpq.br/1518769773387350This research investigated turbulent fluxes of CO2 and energy at the interface of the Caxiuanã bay – atmosphere in the Caxiuanã National Forest (FLONA) located in the Eastern Amazon under influence of atmospheric variables, the bay dimension and the temperature gradient at the interface bay-atmosphere, during the years of 2013 and 2014. The data used in this study were obtained on average 7 meters above the water slide from a micrometeorological tower, installed in the Caxiuanã bay. Measures of fluxes of CO2 (FCO2), sensible heat (H) and latent heat (Le) were collected through a turbulent vortices system. Meteorological data were collected by an automatic weather station. It was verified that the precipitation registered in the studied years was superior to climatic standards. The average hourly water temperature of the bay was always higher than the air temperature over the months. The mean monthly vertical temperature gradient at the bay - atmosphere interface was always positive, reaching the highest and lowest values in the rainy and dry period, respectively. The results show a strong seasonal pattern in the partition of the energy balance to heat the atmosphere (H) and for the evaporation process (Le). In the FCO2 analysis we can verify a clear seasonal pattern with the rainy and dry period of the region, that is, the magnitudes of FCO2, both emission and sequestration by the bay, are higher in the rainy months when compared to the dry months.Item Acesso aberto (Open Access) Dinâmica dos fluxos de dióxido de carbono e metano em área de várzea e terra firme do estuário Amazônico(Universidade Federal do Pará, 2022-04-29) FLORES ARONI, Mario; JARDIM, Mário Augusto Gonçalves; http://lattes.cnpq.br/9596100367613471; https://orcid.org/0000-0003-1575-1248; CATTANIO, José Henrique; http://lattes.cnpq.br/1518769773387350; https://orcid.org/0000-0001-8335-9593Terrestrial ecosystems are important for the greenhouse gases exchange (GHG) between the surface and the atmosphere. The objective of this research was to investigate the annual dynamics of carbon dioxide (FCO2) and methane (FCH4) fluxes in different environments, in relation to floristic composition and environmental variables in a floodplain area of the Amazon estuary. The flux of greenhouse gases (GHG) was simultaneously measured in the terrestrial and aquatic environment, in a tidal cycle, during few days in the year. This study also included a seasonal comparison of GHG fluxes in açaí planted in an upland area compared to an açaí managed area in the floodplain of the Amazon estuary. The floodplain study was carried out in the Environmental Protection Area of Combú Island (APA Combú), Belém, Pará (Brazil), between 2019 and 2021. The study in the upland area was carried out in Santa Maria do Pará. The methodology to measure soil and water FCO2 and FCH4 consisted of closed dynamic chamber and floating chambers methodology, respectively. The Amazonian estuaries showed topographic variability reflected in the water table height, which influences the soil FCO2 and FCH4 dynamics. In the same way that increase in soil temperature contributed to CO2 emissions. Therefore, a possible increase in global temperature could favor CO2 fluxes in the Amazon estuary. The tidal influence in the stream has strong impacts on FCO2 and FCH4 of the water, which play a key role in the carbon cycle through the CO2 and CH4 exchange between water-atmosphere environments. Lowland soils dominated by açaí plantations are a source of CO2 and CH4. However, the advance of açaí plantations in upland is positive for the environmental benefit (CH4 sink).Item Acesso aberto (Open Access) Estimativa do fluxo de metano e dióxido de carbono em áreas de manguezais do município de São Caetano de Odivelas - PA.(Universidade Federal do Pará, 2019-12-03) MARTINÉZ CASTELLÓN, Saúl Edgardo; SILVA, José Francisco Berrêdo Reis da; http://lattes.cnpq.br/1338038101910673; ROLLNIC, Marcelo; http://lattes.cnpq.br/6585442266149471; CATTANIO, José Henrique; http://lattes.cnpq.br/1518769773387350Mangroves are considered environmentally and socioeconomically productive ecosystems because of their contribution to mitigating climate change, capturing and storing CO2 in the aerial and underground biomass, and a large fraction of carbon is escaped from soil and water into the atmosphere. The mangrove areas are important contributors to greenhouse gases (GHG). The study highlights the monthly measurements of fluxes methane (FCH4) and carbon dioxide (FCO2) flows in mangrove forest at the soil-atmosphere interface (Macaca Island), and water-atmosphere interface (Mojuim Estuary). The measurements included the temporal (dry period: July to December 2017 and rainy: January to June 2018) and spatial, (high topography: 2.5 m and low: 2.0 m) scale. Flows are measured by the dynamic chamber method associated with an infrared gas analyser. Additionally, parameters were recorded. A) environmental, air temperature, relative humidity, wind speed. B) physical and chemical water, water temperature, dissolved oxygen and pH. C) soil physical and chemical, soil temperature, soil moisture, organic matter, pH, organic total carbon, total nitrogen, and C/N ratio, microbial carbon, microbial nitrogen. The FCH4 in the soil varied in means of 0.1874 g m-2 d-1 and 0.0711 g m-2 d-1 between dry and rainy season. The FCO2 varied in means of 6.3607 g m-2 d-1, and 7.0542 g m-2 d-1 between dry and rainy season. The FCH4 ranged from 0.2360 g m-2 d-1 to 0.0271 g m-2 d-1 between low and high topography. The FCO2 ranged from 5.4383 g m-2 d-1, and 7.079 g m-2 d-1 between low and high topography. This could be related to the lower amount of organic matter, oxidized environment and good soil aeration in the high topography favoring FCH4 anoxia. The FCH4 in the estuary varied between season dry and rainy from 0.039 to 0.050 g m-2 d-1. The FCO2 varied between season dry and rainy from 10.474 g m-2 d-1 to 28.985 g m-2 d-1. The FCO2 present difference (p < 0.05) between the dry and rainy season, and may be influenced by the salubrious sea water in the tide and fresh water from the Mojuim River into the ebb. In this study it was observed that the highest FCH4 and FCO2 occur in the rainy season, and minimal variation of FCO2 in the soil.