Aquatic Resources
Mostrando 25-36 de 57 artigos, teses e dissertações.
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25. Water quality in cultivation of shrimp in the Great Aracaju - Sergipe, Brazil. / Qualidade da água na carcinicultura na Grande Aracaju - Sergipe, Brasil.
Known to be essential for human survival, water is one of the most important natural resources of the planet; its quality is of fundamental importance for the sustainability of any agroecosystem. There is a worldwide trend in its preservation, to ensure its availability for various purposes. The aquaculture activity in the cultivation of shrimp has as one of
Publicado em: 2009
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26. Estuário do rio Acaraú: Impactos ambientais e implicações na qualidade dos recursos hídricos. / Acaraú River Estuary: Environmental impacts and implications for the quality of water resources.
Estuaries are environments of transition between the continents and the oceans. They shelter great diversity of aquatic fauna and significant mangrove ecosystem. However they are especially frail environments, being more vulnerable than other environments In this sense, the place of this research is the region that encloses Acarau river estuary and its outsk
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/04/2008
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27. Strategies for commercialization of cryopreserved fish semen
Initial success in sperm cryopreservation occurred at about the same time for aquatic species and livestock. However, in the 50 plus years since then cryopreserved sperm of livestock has grown into a billion-dollar global industry, while cryopreserved sperm of aquatic species remains a research activity with little commercial application despite work in more
Revista Brasileira de Zootecnia. Publicado em: 2008-07
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28. ENRIQUECIMENTO TRÃFICO EM AMBIENTES SUBTERRÃNEOS E SUAS APLICAÃÃES PARA A CONSERVAÃÃO DA BIODIVERSIDADE DE INVERTEBRADOS AQUÃTICOS. / Trophic enrichment in underground environments and its applications in the biodiversity conservation of aquatic invertebrates.
The permanent absence of light and high tendency to oligotrophism are often considered to be determining factors in the establishment of species in underground systems There is a lack of studies concerning characterization of fauna and its relation with biological processes (such as production transference nutrient processing) in cave systems The aim of the
Publicado em: 2008
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29. Composition and trophic structure of fish communities in the Ribeirão Bananal sub-basin, Parque Nacional de Brasília, biome Cerrado, DF / Composição e estrutura trófica da comunidade de peixes de riachos da sub-bacia do Ribeirão Bananal, Parque Nacional de Brasília, bioma Cerrado, DF
The purpose of this study was determined the composition and the trophic structure of fish communities in the Ribeirão Bananal sub-basin, which belongs to a well preserved Cerrado area in the National Park of Brasília, Brazil. Furthermore, due to a marked sazonality in this biome, it was examined the influence of environmental variations on the fish specie
Publicado em: 2008
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30. Desafios do modo de vida da pesca artesanal em água doce num contexto socioambiental adverso: uma análise sociológica do caso do bairro rural do Tanquã, Piracicaba/SP / Challenges on the way of life of artisan fishery in fresh water on a argument socioambiental adverse: an analysis sociological of the i wed of the district rural of the tanquã, piracicaba/sp
The intensification concerning the multiple uses of water in the Piracicaba River Basin has led to alterations in the aquatic ecosystem, affecting the fishery supplies with a deleterious influence and causing great limitations to the survival and social reproduction of traditional communities. The way of life within Tanquã community is centered on the artis
Publicado em: 2008
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31. TEMPORAL EVALUATION OF LIMNOLOGIC VARIABLES AT RODOLFO COSTA E SILVA RESERVOIR - RS, AND THE LAND USE IN THE DAM UP AREA / AVALIAÇÃO TEMPORAL DE VARIÁVEIS LIMNOLÓGICAS DO RESERVATÓRIO RODOLFO COSTA E SILVA - RS, E O USO DA TERRA NA ÁREA DE CAPTAÇÃO
The relationship between man and environment initially happens in a natural way. After a while, there is an accelerated populational growth, and new technology comes, which intensifies the human actions both in the terrestrial environment and in the aquatic one, imposing, therefore, unbalance in the relation man-nature. Thus, quantitative and qualitatively,
Publicado em: 2008
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32. Legionary disease: a dialogue between environmental law and hygienic law / O mal dos legionários: um diálogo entre o direito ambiental e o direito sanitário
Discussions held on environmental contamination are most of the time related to residues. Nonetheless, environmental contamination can be biological and caused by humans, consciously or not. The case in study relates to humans actions when contaminating the aquatic environment of Legionella bacterium and creating favorable conditions for its proliferation. T
Publicado em: 2008
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33. Dinâmica do uso dos recursos hídricos nas bacias do ribeirão Entre Ribeiros e do rio Preto, afluentes do rio Paracatu / Water resources use dynamics in watersheds of Ribeirão Entre Ribeiros and Rio Preto, tributaries of the Paracatu River
From times past, humanity confronts problems of environmental degradation. The environment, which always performed efficiently its function of filtration, today finds itself excessively overburdened by human activities: it suffers the risk of its resources exhausting, not being able in certain situations to recuperate itself and needing the help of man. Howe
Publicado em: 2008
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34. Análise da genotoxicidade das águas da Lagoa da Extremoz - RN
The contamination of the waters resources for wastewater from industrial, agricultural, and domestic sources is a serious environment problem, compromising its use for human consumption and agriculture. The Extremoz-RN Lake is an important freshwater source for the supply of the city of Natal, supplying a population of approximately 160,000 habitants. This a
Publicado em: 2008
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35. INDICADORES POPULACIONAIS E ECOLÓGICOS DE PEIXES-BOIS-MARINHOS (Trichechus manatus manatus) EM DUAS ÁREAS DE MANGUEZAIS E MARISMAS NO MARANHÃO / POPULATION AND ECOLOGICAL INDEX FOR MANATEES (Trichechus manatus manatus) IN TWO MANGROVES AND SALT-MARSHES AREAS OF MARANHÃO
The Brazilian north coast has the largest continuous area of mangroves on the planet and hosts large groups of manatees, aquatic mammal critically endangered. This research examines the efforts of fix point methodology of observation of manatees on relevant sites of occurrence, from data collected while on the beach in Guarapiranga (GUA), São José de Ribam
Publicado em: 2008
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36. Influência do uso da terra na incidência de processos de dinâmica superficial na região de Marília (SP)
The study area comprises the western portion of the Marília Plateau, State of São Paulo, southeastern Brazil, whose geological substrate encompasses Cretaceous sedimentary rocks of the Bauru Group and local Cenozoic units like colluvium aprons, fluvial terrace deposits, in situ regoliths, and modern alluvial deposits. In a geomorphologic sense, the study a
Publicado em: 2008