scholarly journals Influence of Rainfall Seasonality in Groundwater Chemistry at Western Region of São Paulo State—Brazil

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1450
Author(s):  
Lais A. Maroubo ◽  
Marcos R. Moreira-Silva ◽  
José Jerônimo Teixeira ◽  
Marcos F. S. Teixeira
Keyword(s):  
Copper Ions ◽  
Rainfall Variability ◽  
Sao Paulo ◽  
Agricultural Activity ◽  
Western Region ◽  
São Paulo ◽  
Aquifer System ◽  
Paulo State ◽  
São Paulo State ◽  
The Mean

The present study evaluated the spatiotemporal variation in concentration of cadmium, lead and copper ions in groundwater wells in the stratigraphic subdivision “Santo Anastácio” that belongs to the Bauru aquifer system in the western region of São Paulo State. Exploratory statistics methods were employed to investigate the response of the concentration of these metals in the aquifer through the pluviometric index of the region. The results show a direct dependence of the mean monthly flow of the metals in the groundwaters to the monthly rainfall flow. The observed behavior was cyclic with a gradual increase and decrease in the flow throughout time. Two groups of cyclic variation were identified. The seasonality of the mean monthly flow of Cd2+ and Pb2+ was inversely proportional to the magnitude of the pluviometric index of the region studied. Meanwhile, the seasonality of Cu2+ was directly correlated to the seasonable rainfall variability. These behaviors lead us to point out that cadmium and lead come from minerals present in the aquifer itself and the presence of copper in groundwater is associated with an anthropogenic action due to the region’s agricultural activity. The study helps us better comprehend the behavior of the whole groundwater system through a comparison with temporal hydrogeochemistry.

scholarly journals The shadows of a ghost: a survey of canine leishmaniasis in Presidente Prudente and its spatial dispersion in the western region of São Paulo state, an emerging focus of visceral leishmaniasis in Brazil

2015 ◽  
Vol 11 (1) ◽  
Author(s):  
Lourdes Aparecida Zampieri D’Andrea ◽  
Elivelton da Silva Fonseca ◽  
Luiz Euribel Prestes-Carneiro ◽  
Raul Borges Guimarães ◽  
Renata Corrêa Yamashita ◽  
...  
Keyword(s):  
Visceral Leishmaniasis ◽  
Spatial Dispersion ◽  
Sao Paulo ◽  
Canine Leishmaniasis ◽  
Western Region ◽  
São Paulo ◽  
Paulo State ◽  
São Paulo State ◽  
The Western Region

Mapping Pasture Areas In Western Region Of SÃO Paulo State, Brazil

2020 ◽  
Author(s):  
A. F. C. Bonamigo ◽  
J. de C. Oliveira ◽  
R. A. C. Lamparelli ◽  
G. K. D. A. Figueiredo ◽  
E. E. Campbell ◽  
...  
Keyword(s):  
Sao Paulo ◽  
Western Region ◽  
São Paulo ◽  
Paulo State ◽  
São Paulo State

scholarly journals Protozooplankton and its relationship with environmental conditions in 13 water bodies of the Mogi-Guaçu basin - SP, Brazil

2013 ◽  
Vol 13 (4) ◽  
pp. 152-163 ◽  
Author(s):  
Inessa Lacativa Bagatini ◽  
Ana Lúcia Gerardi Spínola ◽  
Bianca de Miranda Peres ◽  
Adrislaine da Silva Mansano ◽  
Mafalda Alexandra Antunes Rodrigues ◽  
...  
Keyword(s):  
Environmental Variables ◽  
Sao Paulo ◽  
Water Bodies ◽  
Bromophenol Blue ◽  
São Paulo ◽  
Paulo State ◽  
Two Samples ◽  
São Paulo State ◽  
Biological Aspects ◽  
The Mean

Protozooplankton is an important component of the aquatic microbial food webs and its composition, density, and distribution reflect the chemical, physical, and biological aspects of the environment. Considering the scarce literature on freshwater protozoans in Brazil and on protozoan ecology in subtropical environments, we listed the ciliates and amoebae taxa found in 13 water bodies in São Paulo State and analyzed their abundance in relation to the environmental variables. We collected two samples in each environment, fixed immediately with mercuric chloride and stained with bromophenol blue. After microscopical analysis, 74 protozoan genera were identified and the Ciliophora were dominant in the majority of the environments. The Stichotrichia, represented mostly by the genus Halteria, occurred in all environments, and was the dominant subclass in five of them. The canonic correspondence analysis of the most frequent genera and the environmental variables showed that nitrite and nitrate were the variables that better explained the distribution of Limnostrombidium, Urotricha, and Vorticella. The densities of the genera Halteria, Coleps, and of the species Cinetochilum margaritaceum were positively affected by increasing concentrations of dissolved oxygen, particulate phosphate, conductivity, and temperature. C. margaritaceum were also negatively affected by increasing concentrations of nitrite and nitrate. Considering that we made only one sampling in each environment, the richness was high compared to the mean diversity of lakes in the São Paulo State. The Diogo Lake, located in an ecological reserve, was the richest one, confirming the need of more research on the biodiversity of more preserved environments.

scholarly journals Unusual manifestations of visceral leishmaniasis in children: a case series and its spatial dispersion in the western region of São Paulo state, Brazil

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Luiz Euribel Prestes-Carneiro ◽  
Patricia Rodrigues Naufal Spir ◽  
Mateus Fontanesi ◽  
Karen Gabriella Pereira Garcia ◽  
Francisco Assis da Silva ◽  
...  
Keyword(s):  
Visceral Leishmaniasis ◽  
Spatial Dispersion ◽  
Case Series ◽  
Sao Paulo ◽  
Western Region ◽  
São Paulo ◽  
Paulo State ◽  
São Paulo State ◽  
The Western Region

scholarly journals Canine rabies epidemiology in Araçatuba and neighborhood, Northwestern São Paulo State - Brazil

2004 ◽  
Vol 37 (2) ◽  
pp. 139-142 ◽  
Author(s):  
Luzia Helena Queiroz da Silva ◽  
César Eduardo Bissoto ◽  
Ádna Cleia B. Delbem ◽  
Clara Isabel de Lucca Ferrari ◽  
Sílvia Helena Venturoli Perri ◽  
...  
Keyword(s):  
Urban Areas ◽  
Sao Paulo ◽  
São Paulo ◽  
Canine Rabies ◽  
Paulo State ◽  
São Paulo State ◽  
The Mean ◽  
Northwest Region ◽  
Epidemiological Characteristics ◽  
Rabies Diagnosis

Epidemiological characteristics of canine rabies in the northwest region of São Paulo State (Araçatuba region), Brazil, from 1993 to 1997 are presented. Out of 1,984 dogs, a total of 351 (17.7%) were positive for rabies diagnosis; 89% (312/351) of these occurred in urban areas and 85% (266/312) of the urban positive cases were among owned dogs. The mean age of the rabid dogs was 34 months and 61% were male. Aggressive behavior was observed in 77% of rabid dogs, followed by lack of coordination and paralysis (42%) and 48% of these dogs were responsible biting people or other animals. Information about vaccination status was obtained from 182 records and 51% of rabid dogs were non-vaccinated. The number of unvaccinated rabid dogs indicates a low vaccination index and this factor added to the high dog/man ratio must have contributed to the canine rabies epizootic observed in the studied area.

The Guarani Aquifer System – from regional reserves to local use

2020 ◽  
Vol 54 (1) ◽  
pp. qjegh2020-091 ◽  
Author(s):  
Ricardo Hirata ◽  
Stephen Foster
Keyword(s):  
Sao Paulo ◽  
São Paulo ◽  
Content Type ◽  
Aquifer System ◽  
Paulo State ◽  
Guarani Aquifer ◽  
São Paulo State ◽  
Local Use ◽  
Active Flow ◽  
Groundwater Body

The Guarani Aquifer System is a massive groundwater body underlying large areas of Brazil, Paraguay, Uruguay and Argentina, with a thickness of 50–600 m (averaging about 250 m). It is one of the world's largest sandstone aquifers. The mainly weakly-cemented sandstones were formed by aeolian, fluvial and lacustrine continental deposition during the Triassic–Jurassic period and are overlain by extensive Cretaceous basalt lava-flows. The system is totally storage-dominated, with recharge amounting to only about 0.2% of the estimated 30 000 km3 of water stored. Using 14C and81Kr techniques, it was possible to confirm extremely slow flow rates, with groundwater older than 730 000 years BP in some parts of São Paulo State, Brazil. The vast regional freshwater storage contrasts sharply with localized active flow systems of recharge areas, which are strongly impacted by land-use change. The aquifer is the best known and most exploited in São Paulo State (80% of total extraction) and the experience of groundwater use for the supply of Ribeirão Preto and São José do Rio Preto (both with populations of over 0.5 million), together with one transboundary urban area, will be summarized.Thematic collection: This article is part of the Hydrogeology of Sandstone collection available at: https://www.lyellcollection.org/cc/hydrogeology-of-sandstone

scholarly journals Spatio-temporal distribution of human American visceral leishmaniasis in the Western region of Sao Paulo State, from 2004 to 2018

2020 ◽  
Vol 62 ◽  
Author(s):  
Eduardo Alexandre Rancan ◽  
Eduardo Federighi Baisi Chagas ◽  
Márcia Aparecida Sperança ◽  
Valeria Camargo de Lacerda Carvalho ◽  
Luciamáre Perinetti Alves Martins ◽  
...  
Keyword(s):  
Visceral Leishmaniasis ◽  
Temporal Distribution ◽  
Sao Paulo ◽  
Western Region ◽  
São Paulo ◽  
Paulo State ◽  
São Paulo State ◽  
The Western Region ◽  
Spatio Temporal

scholarly journals Helminth fauna of Astyanax fasciatus Cuvier, 1819, in two distinct sites of the Taquari River, São Paulo State, Brazil

2015 ◽  
Vol 75 (1) ◽  
pp. 242-250 ◽  
Author(s):  
AA Acosta ◽  
J. Queiroz ◽  
H. Brandão ◽  
RJ Silva
Keyword(s):  
Sao Paulo ◽  
Host Population ◽  
Helminth Fauna ◽  
São Paulo ◽  
New Host ◽  
Paulo State ◽  
Astyanax Fasciatus ◽  
São Paulo State ◽  
The Mean ◽  
Direct Cycle

This study assessed the helminth fauna of Astyanax fasciatus in two distinct sites of the Taquari River, São Paulo State, with 30 individuals sampled in a lotic site and 30 in a lentic site, recording the monogeneans: Cacatuocotyle paranaensis, Characithecium costaricensis, Diaphorocleidus kabatai, Jainus sp., Notozothecium sp. and Gyrodactylus sp., the digenean Antorchis lintoni and no-identified metacercariae; the nematode Procamallanus (Spirocamallanus) inopinatus and no-identified larvae. The mean abundances of total monogeneans (U = 1053; p = 0.042) and C. costaricensis (U = 1107; p = 0.005) were higher in the lotic site. This difference may be due to the higher density of the host population in the lotic site, and the water transparence in lentic environments that prevents A. fasciatus to form shoals, precluding the exchange of parasites with direct cycle within a host population. This study is the first report of the helminth fauna of A. fasciatus in the Taquari River, with ten taxa recorded, and reports A. fasciatus as a new host for Notozothecium sp. and C. paranaensis.

Relation between sedimentary framework and hydrogeology in the Guarani Aquifer System in São Paulo state, Brazil

2011 ◽  
Vol 31 (4) ◽  
pp. 444-456 ◽  
Author(s):  
Ricardo Hirata ◽  
Ana Gesicki ◽  
Ondra Sracek ◽  
Reginaldo Bertolo ◽  
Paulo César Giannini ◽  
...  
Keyword(s):  
Sao Paulo ◽  
São Paulo ◽  
Aquifer System ◽  
Paulo State ◽  
Guarani Aquifer ◽  
São Paulo State ◽  
Sedimentary Framework

scholarly journals Disaggregation of daily rainfall data for the Caraguatatuba city, in São Paulo State, Brazil

RBRH ◽  
2019 ◽  
Vol 24 ◽  
Author(s):  
Daniela Martins ◽  
Maria Luiza Teofilo Gandini ◽  
Nadiane Smaha Kruk ◽  
Paulo Ivo Braga Queiroz
Keyword(s):  
Daily Rainfall ◽  
Rain Gauge ◽  
Sao Paulo ◽  
São Paulo ◽  
Relative Deviation ◽  
Study Region ◽  
Mean Values ◽  
Paulo State ◽  
São Paulo State ◽  
The Mean

ABSTRACT The objective of this study is to present disaggregation coefficients for intense daily rainfalls for E2-046 rainfall station, located at Caraguatatuba, São Paulo state. The data obtained through rain gauge refer to a continuous period (31 years of series) and had a strong correlation with the measurements of the rain gauge, validating the pluviographs reading, which attributed greater reliability to the results. The average coefficient “24 hours”/“1-day” found for the study region was 1.075, which differs significantly from the values found in literature. The relative deviation considering other durations, and consequently other precipitation coefficients in relation to the mean values of the disaggregation values of the E2-046 station reached 22.06% (18 hours/“24 hours”). The relative deviation of rainfall disaggregation coefficients of the station studied in relation to the mean coefficients for the cities of São Paulo State to small durations was quite high, reaching almost 50% (10 minutes /“24 hours”). This reinforces the need of using local disaggregation coefficients.

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