Anthropogenic Impacts
Mostrando 13-24 de 56 artigos, teses e dissertações.
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13. Spatiotemporal distribution of the benthic macrofauna in an urbanized subtropical estuary: environmental variations and anthropogenic impacts
Resumo Este estudo foi conduzido no baixo estuário do rio Itajaí-Açu, sul do Brasil, no qual buscamos: (1) determinar a distribuição espaço-temporal da macrofauna (2) relacionar o padrão de distribuição da assembleia com as variáveis ambientais e (3) avaliar a influência das dragagens de aprofundamento sobre a estrutura e composição da assemblei
Braz. j. oceanogr.. Publicado em: 2016-09
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14. Background and Reference Values of Metals in Soils from Paraíba State, Brazil
ABSTRACT Soil contamination by heavy metals threatens ecosystems and human health. Environmental monitoring bodies need reference values for these contaminants to assess the impacts of anthropogenic activities on soil contamination. Quality reference values (QRVs) reflect the natural concentrations of heavy metals in soils without anthropic interference and
Rev. Bras. Ciênc. Solo. Publicado em: 29/04/2016
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15. Effects of anthropogenic impacts on benthic macroinvertebrates assemblages in subtropical mountain streams
The nature of the riparian and surrounding landscape has been modified by anthropogenic activities, which may subsequently alter the composition and functional structure of macroinvertebrate assemblages. The effect of these changes on function of benthic fauna is difficult to assess due to the scarce knowledge on functional structures in tropical streams. In
Iheringia, Sér. Zool.. Publicado em: 2013-12
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16. Threats to and viability of the giant anteater, Myrmecophaga tridactyla (Pilosa: Myrmecophagidae), in a protected Cerrado remnant encroached by urban expansion in central Brazil
Urbanization poses a serious threat to wildlife populations inhabiting native vegetation remnants surrounded by the expanding urban and suburban sprawl. The close contact with human activities causes not only direct impacts, such as habitat loss, but also indirect negative effects, such as population isolation, roadkills and anthropogenic fires. The Parque N
Zoologia (Curitiba). Publicado em: 2013-04
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17. Oceanografia e Química: unindo conhecimentos em prol dos oceanos e da sociedade
The marine environment is certainly one of the most complex systems to study, not only because of the challenges posed by the nature of the waters, but especially due to the interactions of physical, chemical and biological processes that control the cycles of the elements. Together with analytical chemists, oceanographers have been making a great effort in
Quím. Nova. Publicado em: 2013
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18. Percepção de riscos ambientais e mudanças climáticas no Varjão - Distrito Federal
In the world under the threat of climate change, diversity and intensity of risks to which society is subjected rise alarmingly, especially for urban populations living in vulnerable situations. Environmental changes that occur in the 21st century will affect all forms of life on the planet and the species will depend on its adaptability and resilience to su
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/05/2012
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19. Marcadores orgânicos moleculares como ferramentas no monitoramento ambiental: Avaliação da distribuição de Alquilbenzeno Lineares (LABs) em organismos e sedimentos, como indicativo de exposição ao esgoto em áreas costeiras / Organic molecular markers as tools in environmental monitoring: Evaluation of Linear Alkylbenzene (LABs) distribution in organisms and sediments, as indicative of exposure to sewage in coastal areas
The sewage disposal in coastal areas can cause impacts to marine life, altering the balance of the ecosystem and biodiversity and causing serious diseases in humans. In this study, the concentration of a set of molecular markers for the introduction of organic sewage into the marine environment: linear alkylbenzene (LAB), in samples of sediment, oysters (Cra
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/04/2012
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20. Zoneamento geoambiental da região do litoral sul do Estado de São Paulo como subsídio ao uso e ocupação das terras : um estudo de caso dos municípios de Iguape, Ilha Comprida e Cananéia / Geoenvironmental zoning of the South Coast Region of the State of São Paulo as a subsidy to the use and occupation of the land : a case study of the municipalities of Iguape, Ilha Comprida e Cananéia
The coastal regions in Brazil are characterized by the dynamics of natural processes associated with the conformation of relief that may represent areas of risk to the occurrence of events such as floods or gravitational movement. The intense process of human occupation over time in these areas has assisted greatly weaken the organization of the whole natura
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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21. Mapeamento geomorfológico aplicado na análise de impactos ambientais urbanos: contribuições ao (re)conhecimento de morfologias, morfocronogêneses e morfodinâmicas do relevo da bacia hidrográfica do Arroio Feijó - RS / Geomorphologic mapping applied to the analysis of urban environmental impacts: contributions to the (re) cognition of morphology, morphochronogenesis, and morphodynamics of the Feijó/ RS stream basin relief
Urban environmental impacts generate various social disorders. In many cases, the analysis of environmental impacts should be the agenda for everyday discussion, included in urban planning policies. As support to these policies of urban planning in a perspective of applicability of geomorphologic knowledge we highlight the thematic mappings in geomorphology.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/11/2011
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22. Regeneração de espécies arbóreas em floresta impactada
This study aimed to investigate aspects of population ecology of six tree species in two areas with different historical preservation: Mata São Francisco State Park (MSFSP), Santa Mariana-Cornelio Procópio, PR, Brazil (23º 15 S and 50º 45 W, central point of fragment), who suffered exploration anthropogenic, and Mata dos Godoy State Park (MGSP) (23º 27
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2011
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23. Anthropogenic impacts influencing the hydro-ecological processes of Pantanal Wetland - Brazil.
2010
INTERNATIONAL SYMPOSIUM ON WETLANDS IN A FLOOD PULSING ENVIRONMENT. Publicado em: 2011
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24. Estrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópica / Estrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópica / Structure and richness of the epiphytic liverworts (Marchantiophyta) in fragmented areas of Cerrado with natural edge and anthropogenic / Structure and richness of the epiphytic liverworts (Marchantiophyta) in fragmented areas of Cerrado with natural edge and anthropogenic
The damage caused by the proliferation of edge in forest cover, referred to as edge effects are extensive, may occur over large spatial scales influencing species composition, structure and ecological processes in boundaries of ecosystems. However, studies have shown highly variable response patterns of the taxonomic group studied in relation to the landscap
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/06/2010