scholarly journals Investigation of activation of base deformations on landslide hazardous slopes with anthropogenic action

2019 ◽  
Vol 0 (39) ◽  
pp. 41-55
Author(s):  
Eduard Petrenko
Keyword(s):  
Anthropogenic Action

scholarly journals The Dasypodidae (Mammalia, Xenarthra) from the Urso Fóssil Cave (Quaternary), Parque Nacional de Ubajara, State of Ceará, Brazil: paleoecological and taxonomic aspects

2014 ◽  
Vol 86 (1) ◽  
pp. 147-158 ◽  
Author(s):  
PAULO V. OLIVEIRA ◽  
ANA MARIA RIBEIRO ◽  
ÉDISON V. OLIVEIRA ◽  
MARIA SOMÁLIA S. VIANA
Keyword(s):  
Environmental Conditions ◽  
Feeding Habits ◽  
Early Holocene ◽  
Northeastern Brazil ◽  
Dasypus Novemcinctus ◽  
Sediment Samples ◽  
Wide Geographical Distribution ◽  
Anthropogenic Action ◽  
Euphractus Sexcinctus ◽  
Northwest Region

This paper deals with xenarthrans osteoderms assigned to Dasypus aff. D. novemcinctus, Euphractus sexcinctus and Cabassous sp. The material was collected in subsurface, from 0.10 to 0.60 m in the Urso Fóssil Cave, Parque Nacional de Ubajara, State of Ceará, northeastern Brazil. The ages of sediment samples from levels 4 and 5 (depths of 0.40 and 0.50 m) were determined by thermoluminescence technique, and indicated ages of 8,000 and 8,200 years BP for each layer respectively. The presence in these layers of early Holocene xenarthrans taxa can contribute to the understanding of the biotic evolution of the northwest region of Ceará during the last 10,000 years. Two of the three identified taxa still occur in the region: Dasypus novemcinctus and Euphractus sexcinctus. The Dasypodidae fauna here reported includes animals with generalist feeding habits and current wide geographical distribution. It is suggested, therefore, that the climatic and environmental conditions in the early Holocene were very similar the actual ones, and that the absence of Cabassous may be conditioned to other factors, such as anthropogenic action and loss of habitat by fragmentation of the vegetation.

Estrutura dos depósitos sedimentares quaternários da bacia hidrográfica do rio Santana, Miguel Pereira, Estado do Rio de Janeiro

1999 ◽  
Vol 22 ◽  
pp. 8-22 ◽  
Author(s):  
Claudio Valdetaro Madeira ◽  
Leonardo Borghi
Keyword(s):  
Alluvial Fans ◽  
Fluvial System ◽  
Soil Horizons ◽  
Hydrographic Basin ◽  
Sedimentary Deposits ◽  
River Bed ◽  
Anthropogenic Action ◽  
High Terrace ◽  
Crevasse Splay ◽  
Geomorphological Features

The present work deals with stratigraphy, sedimentology and geomorphology of Quaternary sedimentary deposits of Santana river hydrographic basin. through facies and arquitectural elements descriptions. Based on five arquitectural elements characterized by ten lithofacies the following structural and depositional evolutions were scheduled: 1) formation of thick soil horizons over the basement; 2) deposition of several alluvial fans on the soils (lithofacies Gm and Fm, element E); 3) above an unconformity we can recognize a fluvial system, characterized by a non well drainage floodplain. This floodplain is overlaid by high-sinuosity channels (lithofacies Sp and St, element C) genetically related to other floodplain (lithofacies Fl and Fsc, element A) where the interfigering with crevasse splay deposits (lithofacies Sh, Sl, and Sp, element B) is ususal; 4) an erosional phase suceed by a new depositional phase characterized by low-sinuosity channels (lithofacies Gp, Gt, Sp, St, and Sh, element D). Nowadays anthropogenic action produces a new erosional phase. The geomorphological features recognized were scheduled: 1) the present floodplain 1.5m above the river bed; 2) the low terrace ( named T2) 5m above the river bed and its deposits is related to element D; 3) the high terrace ( named T1) 11m above the river bed and its deposits is related to elements A, B, C and E.

Environmental conditions of the Suape estuarine-port complex area (Pernambuco, Brazil): phytoplankton biomass and hydrological parameters

2018 ◽  
Vol 99 (2) ◽  
pp. 291-301
Author(s):  
Isis Amália Cordeiro ◽  
Fernando Antônio Do Nascimento Feitosa ◽  
Manuel De Jesus Flores Montes ◽  
Amanda Yumi Otsuka ◽  
Alex Costa Silva
Keyword(s):  
Dissolved Oxygen ◽  
Environmental Conditions ◽  
Rainy Season ◽  
High Tide ◽  
Dry Season ◽  
Water Transparency ◽  
Industrial Complex ◽  
Productive Capacity ◽  
Chl A ◽  
Anthropogenic Action

The Suape coastal zone has suffered since the 1980s the effects of anthropogenic action due to the construction of the industrial complex of Suape. This work aimed to evaluate the environmental conditions and possible eutrophication processes of the area. Six campaigns were carried out, three in the dry season (November 2015, January and April 2016) and three in the rainy season (July 2015, July and August 2016). Water samples were collected at the surface during low tide and high tide, in neap tides. Salinity ranged from 19.75 to 37.20, the dissolved oxygen rate ranged from 61.75 to 125.90% and chlorophyll-a from 0.02 to 3.48 mg m−3. Water transparency, temperature, nitrate and silicate presented significant seasonal variation, the concentrations of nutrients being higher in the rainy season and the others in the dry season. Water transparency, salinity, dissolved oxygen saturation and chl-a <20 µm showed significant differences for tide, being higher at high tide, and at low tide for chl-a of <20 µm. The low content of dissolved inorganic nutrient salts and chl-a were indicative of an area still free of eutrophication. Anthropogenic changes in the environment have led to greater marine interference and consequently to a reduction of the productive capacity of the system.

scholarly journals CONCENTRAÇÃO DE FÓSFORO PRESENTE NOS RECURSOS HÍDRICOS: AVALIAÇÃO DO ÍNDICE DE ESTADO TRÓFICO DO BALNEÁRIO DE QUATÁ-SP

2018 ◽  
Vol 10 (Especial) ◽  
pp. 24-28
Author(s):  
Jaine D’Aurelio Carreira ◽  
Daniel Ângelo Macena ◽  
Jaqueline Nascimento da Silva
Keyword(s):  
Population Health ◽  
Trophic State ◽  
Fish Mortality ◽  
Water Color ◽  
Vegetation Growth ◽  
Standard Methods ◽  
Physico Chemical ◽  
Anthropogenic Action ◽  
Water And Wastewater

Water can undergo natural physico-chemical changes, but it is often caused by anthropogenic action due to improper disposal of effluent. These changes lead to eutrophication, which results in a high index of nutrients such as phosphorus and nitrogen, leading to vegetation growth. Other consequences may be fish mortality, dark water color of water, strong odor and transfer of pathogens, which endangers population health. The present work had as objective to perform analyzes of total phosphorus in the Municipal Spa of Quatá-SP. The method used for the analyzes was Phosphorus with Reactive Orthophosphate, adapted from the Standard Methods for the Examination of Water and Wastewater and the results were compared with the trophic state classes and the parameters of the legislation. At the end of the analyzes, the values obtained from EIT were considered high, compromising the quality of the water in some points.

scholarly journals Review of chelid and emydid turtle distributions in southern South America with emphasis on extralimital populations and new records for Argentina

2019 ◽  
pp. 219-229
Author(s):  
Rocio Sanchez
Keyword(s):  
South America ◽  
New Records ◽  
Natural Occurrence ◽  
Freshwater Turtles ◽  
Natural Areas ◽  
Long Distance ◽  
Southern South America ◽  
Turtle Species ◽  
Anthropogenic Action

There are many cases of animals reported in localities away from natural areas of distribution for the species. With respect to native freshwater turtles of Argentina and bordering countries, several populations (and single specimens) were reported for areas that cast doubts about their origin, due to not only the long distance from other known localities but also the geographical barriers that are in between. The present work provides a review of localities of the native turtle species Hydromedusa tectifera, Phrynops hilarii, Acanthochelys pallidipectoris, A. spixii and Trachemys dorbigni in Argentina, Bolivia, Brasil, Paraguay and Uruguay, and adds new records for some of these species for Argentina. We also employ an analysis to recognise core and extralimital populations, and a methodology based on five criteria that must be taken into account to elucidate if one extralimital turtle record is the result of anthropogenic action or a case of natural occurrence. Finally, we discuss about the origin of extralimital reports of turtles of the mentioned species.

scholarly journals Forensically relevant diptera species associated with pig carcasses in a Brazilian city exposed to high rates of homicide

2021 ◽  
Vol 61 ◽  
pp. e20216101
Author(s):  
Tadeu Morais Cruz ◽  
Taciano Moura Barbosa ◽  
Patrícia Jacqueline Thyssen ◽  
Simão Dias Vasconcelos
Keyword(s):  
Geographical Distribution ◽  
Rainy Season ◽  
Forensic Entomology ◽  
The Other ◽  
Northeastern Brazil ◽  
Forest Fragments ◽  
Anthropogenic Action ◽  
Forested Areas ◽  
Rapid Dissemination ◽  
Pig Carcasses

Cities in northeastern Brazil experience extreme rates of unsolved homicides, a situation that stimulates innovative procedures in the police work, such as forensic entomology. We surveyed necrophagous insects associated with carrion in a city exposed to high rates of homicides in Northeastern Brazil. The experiments were carried out in a rainforest fragment located in Recife, State of Pernambuco. Two pig carcasses were used as models, one in the dry and the other in the rainy season. The collection of adults was performed daily until the complete skeletonization of the carcasses. At least 32 Diptera species from the families Calliphoridae, Muscidae, Sarcophagidae, Fanniidae, Phoridae, Anthomyiidae, Piophilidae, and Stratiomyidae were registered, some of which have been previously documented on cadavers. A high richness of Diptera species was registered in all stages of decomposition. A strong overlap in the occurrence of most species was observed, which invalidates a defined entomological succession on the carcasses. Two species stood out in terms of abundance: Ophyra chalcogaster (Muscidae) and Chrysomya albiceps (Calliphoridae). The ubiquity of Hemilucilia semidiaphana (Calliphoridae) seems to confirm its preference for forest fragments exposed to low anthropogenic action. Our data contribute to expand the knowledge on the geographical distribution of forensically relevant species in the region and confirm the rapid dissemination of invasive Chrysomya species in forested areas.

IMPACTOS AMBIENTAIS NO ALTO CURSO DA SUB-BACIA HIDROGRÁFICA DO RIO BATATEIRAS NA REGIÃO SUL DO ESTADO DO CEARÁ

2019 ◽  
Vol 21 (2) ◽  
pp. 1091-1103
Author(s):  
Daniel Pereira Silva ◽  
Ernane Cortez Lima
Keyword(s):  
Natural Resources ◽  
Environmental Impacts ◽  
River Basin ◽  
Palabras Clave ◽  
Historical Processes ◽  
Dissertation Research ◽  
Anthropogenic Action ◽  
Del Rio

Este artigo aborda um levantamento dos impactos ambientais na sub-bacia hidrográfica do rio Batateiras, considerando as historicidades que influenciaram estes desusos e tendo como finalidade, almejar medidas mitigadoras. O referente artigo é fruto de uma pesquisa de dissertação realizada pelos autores.Palavras-chave: Medidas Mitigadoras. Ação Antrópica. Recursos Naturais. Processos Históricos ABSTRACTThis article addresses a survey of the environmental impacts in the Batateras river basin, considering the historicities that influenced these disuse and aiming at mitigating measures. This article is the result of a dissertation research carried out by the authors.Keywords: Mitigating Measures. Anthropogenic Action. Natural resources. Historical Processes.  RESUMENEste artículo aborda un estudio de los impactos ambientales en la cuenca del río Batateras, considerando las historicidades que influyeron en estos desuso y apuntando a medidas de mitigación. Este artículo es el resultado de una investigación de tesis realizada por los autores. Palabras clave: medidas atenuantes. Acción antropogénica. Recursos naturales. Procesos Históricos

scholarly journals Bio-Évaluation De La Qualité Des Eaux De Surface D’oued Beht (Maroc) Indice Biologique Global Des Réseaux De Contrôle Et De Surveillance (IBG-RCS)

2017 ◽  
Vol 13 (3) ◽  
pp. 94
Author(s):  
Lamhasni Nihad ◽  
Chillasse Lahcen ◽  
Timallouka Mohamed
Keyword(s):  
Water Quality ◽  
Biological Assessment ◽  
Biological Index ◽  
Surveillance Networks ◽  
Urban Waste ◽  
River Quality ◽  
Anthropogenic Action ◽  
The Impact

The present study concerns the biological assessment of Beht’s river quality in Morocco during the period Mai-June of 2014 using the standard Global Biological Index of Control and Surveillance Networks (GBICSN).Thus twelve sampling stations were chosen for the determination of the impact of agricultural and urban waste of Beht’s area on the biological waters quality of this river. As results this biological approach showed downgrading notes of the biological index from the watershed’s uphill to its downstream reflecting this way the deterioration of water quality with increasing anthropogenic action and inputs.

scholarly journals The social perception of natural hazards risk: Portugal and Tuvalu

2012 ◽  
pp. 195
Author(s):  
Rodrigo Rudge Ramos Ribeiro ◽  
Celeste Oliveira Alves Coelho
Keyword(s):  
Climate Change ◽  
Sea Level Rise ◽  
Sea Level ◽  
Geographic Distance ◽  
Sea Level Change ◽  
Academic Community ◽  
Natural Risk ◽  
Natural Processes ◽  
Level Change ◽  
Anthropogenic Action

The effects of climate change and sea-level change should cause serious problems for the inhabitants of some small islands such as Tuvalu in the future. As a result of a combination of natural processes and anthropogenic action, the sea-level change creates different impacts. This research investigates the perception of natural risk and climate change in Portugal and Tuvalu. The perception of the some natural risk, like sea-level rise, can be different of each place. The perception of climate changes in Tuvalu is little known for academic community from University of Aveiro, and they believe that the impacts of sea level rise for Portugal and Tuvalu are not the same. The geographic distance makes an influence in perception of risks; residents far away from this phenomenon present a low level of attention of this phenomenon.

scholarly journals Bibliometric Analysis of Global Research Progress on Electrochemical Degradation of Organic Pollutants

2021 ◽  
Author(s):  
José Ribamar Nascimento Dos Santos ◽  
Ismael Carlos Braga Alves ◽  
Aldaléa L. Lopes Brandes Marques ◽  
Edmar Pereira Marques
Keyword(s):  
Bibliometric Analysis ◽  
Organic Pollutants ◽  
High Efficiency ◽  
Research Progress ◽  
Electrochemical Degradation ◽  
La Mancha ◽  
Anthropogenic Action ◽  
Number Of Publications ◽  
The University ◽  
Academy Of Sciences

Abstract As a result of anthropogenic action, an increasing amount of toxic organic compounds has been released into the environment. These pollutants have adverse effects on human health and wildlife, which has motivated the development of different types of technologies for the treatment of effluents and contaminated environments. The electrochemical degradation of organic pollutants has attracted the interest of research centers around the world for its environmental compatibility, high efficiency and affordable cost. In the present study, a bibliometric analysis was performed using the Web of Science database in order to assess the progress of publications related to electrochemical degradation of organic pollutants between the years 2001 and 2021. The data retrieved showed a significant increase in publications related to the topic in the last 20 years. Electrochimica Acta was the magazine responsible for the largest number of publications (230, 7.22%). The studies mainly included the areas of chemistry, engineering and electrochemistry. China with a total of 1004 (31.49%) publications dominated research in this area, followed by Spain (282, 8.85%) and Brazil (255, 8.00%). The institutions with the highest number of contributions were the University of Castilla-la Mancha and the Chinese Academy of Sciences, and the most productive authors were Rodrigo MA and Martines-Huitle CA. The results of this study provide important references and information on possible research directions for future investigations on electrochemical degradation of organic pollutants.

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