Água: qualidade, interações ambientais e implicações socioeconômicas no estudo de caso do Lago dos Tigres (GO)
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2012-12-07
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Universidade Federal de Goiás
Resumo
The process of expansion and occupation of Goiás was based on farming practices. The
municipality of Britain emerges in this context of agrarian expansion, in which the land
is located where the city were bought and sold as small rural. The city has much of its
economy facing livestock, however other activity has been increasing in the region such
as tourism, which attracts hundreds of people there due to the Lago dos Tigres. The lake
is the main postcard of the region, possessing 24km long and being located in the basins
of the rivers Araguaia-Tocantins, this lake is formed by the meeting of the waters of the
Rivers and Clean Water Red and that, combined with the local geography form a valley
blocked. The lake has over time shown signs of environmental degradation due to the
way the two main economic activities of the municipality using its resources. For this
reason, the objectives of this study were: to survey, the main socioeconomic
characteristics of the city, establishing the main income-generating activities in the
region and see how these activities can impact upon quality of life of the local
population and water quality lake. Also we made a characterization of the spatial
evolution of the use and occupation of land in the county between the years 1988.1998
and 2009, in order to check how busy it was and how soil surrounding the Lake of the
Tigers, was also verified how of land in the watershed may be interfering with the
dynamics and interaction of phytoplankton communities and ficoperifíticas littorallimnetic
gradient in the lake, as well as to analyze the influence of the hydrological
cycle on these communities. The socioeconomic characteristics of the municipality of
Britain was made with secondary data concerning agriculture, livestock, tourism,
demographics, social and cultural region in the last ten years. Specific data on the
region's economic development and the importance of the lake to the population were
made through questionnaires. An Index of Sustainable Development for Municipalities
(IDSM) was used to assess levels of sustainability in the region. The results highlighted
the importance of the lake for the Tigers has the city's economy and for local people and
how these activities are interfering with the water quality of the lake and in the diversity
of species of algae that are the base of the food chain in aquatic system. The study found
that deforestation in the region is endangering the Lake of the Tigers, and that this
presents a direct relationship between man and water, harming the quality of life of
people living in Britain. The reflection of local environmental change is reflected in the
trophic status of the oligotrophic lake that already features indicative of transition to
mesotrofia. The communities ficológicas not yet had major changes in its structure with
significance. However, in recent years with morphological changes of the lake changes
occurred in some aspects limnóligicos and this occurred with the rise of cyanobacteria
at the site, indicating possible disturbances that may affect the water quality of the lake.
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OLIVEIRA, Juliano Eduardo de. Água: qualidade, interações ambientais e implicações socioeconômicas no estudo de caso do Lago dos Tigres (GO). 2012. 193 f. Tese (Doutorado em Ciências Ambientais) - Universidade Federal de Goiás, Goiânia, 2012.