Sediment Retention
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. Response of mangrove plant species to a saline gradient: Implications for ecological restoration
ABSTRACT Mangroves are salt tolerant plants that occur in tropical and sub-tropical sheltered coasts. Saltwater intrusions into terrestrial landscapes often occur due to either anthropogenic reasons or natural calamities such as tsunamis. We investigated the potential of using mangrove species for rehabilitation of high saline environments by revealing the c
Acta Bot. Bras.. Publicado em: 2021-03
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2. Metal Distribution in the Environmental Compartments of Manguaba Lagoon (Alagoas State, Brazil)
The metal concentrations in water, sediments and mollusks (Tagelus plebeius) of the Manguaba Lagoon and the influence of humic substances from water and sediments in the distribution of these metals were investigated in this work. The mean metal concentrations in water were: Mg (89.0 ± 0.11), Ca (32.0 ± 0.10), Fe (0.97 ± 0.02), Mn (0.52 ± 0.01), Zn (0.33
J. Braz. Chem. Soc.. Publicado em: 2021-03
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3. Infecção de gerbils (Meriones unguiculatus) com Toxocara canis : migração de larvas e estudo morfológico com pesquisa imunohistoquímica de antígenos de larvas nas lesões
Introduction. In last years, the gerbils have been used as experimental model of toxocariasis, especially for studies of ocular lesions and central nervous system. Objectives. To study the migration of larvae and lesions with immunohistochemical study in gerbils infected or re-infected with Toxocara canis. Methods. Gerbils were infected with 1,500 embryonate
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/04/2010
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4. AnÃlise do Assoreamento de um Pequeno ReservatÃrio: Estudo de caso AÃude BoqueirÃo, Aiuaba, CE / Sedimentation analysis of a small reservoir: Case study reservoir BoqueirÃo, Aiuaba, CearÃ.
A multiplicaÃÃo da quantidade de pequenos reservatÃrios no semiÃrido nordestino provoca um impacto considerÃvel na disponibilidade hÃdrica das mÃdias e grandes bacias hidrogrÃficas, tornando-se assim, um impeditivo no bom gerenciamento deste recurso. Por outro lado, a pequena aÃudagem tem um importante papel com a retenÃÃo de sedimentos oriundos d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/02/2010
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5. Spatial and temporal variation of the nutrients in the sediment and leaves of two Brazilian mangrove species and their role in the retention of environmental heavy metals
A variação espacial e temporal das concentrações de nutrientes das folhas e do sedimento entre as raízes de Laguncularia racemosa (L.) Gaertn. f. e Rhizophora mangle L. foi analisada no manguezal do estuário do Rio São Mateus, Espírito Santo, Brasil. No tecido foliar, os nutrientes seguiram a ordem: N > Ca > K > Mg > S > P > Fe > Mn > Zn > Cu, havend
Brazilian Journal of Plant Physiology. Publicado em: 2010
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6. Análise da redistribuição do "fallout" do 137Cs na avaliação da erosão e deposição de sedimentos em sistemas de manejo de solo sob Cerrado / Erosion and sediment deposition evaluation on slopes under different tillage systems in the Cerrado region using the 137Cs fallout technique
In Brazil, the expansion of agricultural areas causes several problems on natural resources. With the increasing occupation of the Cerrado region by agriculture, a series of environmental problems like deforestation, soil erosion and soil compaction are appearing and causing radical transformations in the natural landscape due to removing almost all native v
Publicado em: 2010
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7. Capacidade de Retenção de Fósforo e Material Particulado em Suspensão por Manguezal de Área Impactada por Efluentes da Carcinicultura. / Phosphorus retention capacity and Suspension of Particulate Matter in Mangrove Area impacted by effluents from Shrimp.
The mangrove forests stabilize the coastal erosion zone and act as a buffering between the continent and the sea. This forest presents high resilient degree, suggested to be used as marker of environmental changes. They play an important role in the energy flow and nutrients cycles. They are suffering with the growth of shrimp ponds. This tends to be respons
Publicado em: 2009
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8. As comunidades macrobentÃnicas na avaliaÃÃo da qualidade ambiental de Ãreas estuarinas de Pernambuco
Estuarine environments are known by its importance in terms of complexity and biodiversity; however, anthropogenic activities continue to have a detrimental effect on its biodiversity levels on a worldwidescale. Several studies have emphasized the role of benthic macroinvertebrates as indicators of environmental quality status in these ecosystems, which have
Publicado em: 2009
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9. Estudo da mobilização de metais e elementos traços em ambientes aquáticos do semi-árido brasileiro aplicando análises de componentes principais
The spatial and temporal retention of metals has been studied in water and sediments of the Gavião River, Anagé and Tremedal Reservoirs, located in the semi-arid region, Bahia - Brazil, in order to identify trends in the fluxes of metals from the sediments to the water column. The determination of metals was made by ICP OES and ET AAS. The application of s
Química Nova. Publicado em: 2008
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10. Investigação dos processos hidrossedimentológicos em parcela experimental no semi-árido potiguar
In northeastern semiarid, seasonality on precipitation temporal distribution, high intensity storm events and inadequate management of native vegetation can promote soil erosion. Vegetation removal causes soil surface exposure, reduces soil water storage capacity and can be the source degradation processes. In this context, this approach aims to analyze wate
Publicado em: 2008
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11. Agrarian soil and sediment redistribution and quality in slopes with riparian forests: a case study for Goiatuba, Brazil / Redistribuição e qualidade de solos e sedimentos agrícolas em vertentes com mata ciliar: estudo de caso em Goiatuba (GO), Brasil
Soil erosion is associated with environmental degradation because of inadequate use of natural resources in modern agriculture, thus promoting in and off-site impacts, represented by soil, water and nutrient losses, silting and contamination of riparian ecosystems. In the Brazilian Cerrado region these impacts become more evident by its fast conversion to ag
Publicado em: 2007
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12. Macozoobenthic community structure in the region influenced by Almirante Barroso Terminal (TEBAR) in the São Sebastião Channel (SP, Brasil) / Estrutura da comunidade macrozoobentônica na região de influência do Terminal Almirante Barroso (TEBAR) no Canal de São Sebastião (SP, Brasil)
A study of benthic macrofauna was carried out along the São Sebastião Channel (SSC) during summer and winter of 2005. Sediment samples were undertaken (van Veen grab 0.03 m2) to chemical and biological analysis, in an area influenced by anthropogenic activities. The stations nearby the Terminal Almirante Barroso (TEBAR) oil terminal, Araçá sewage system
Publicado em: 2007