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

Abstract. Brazil is one of the largest exporters of cattle meat production. Most of this production is under pasture areas, with different levels of livestock and field management. Remotely sensed images could be interesting tools to detect distinct temporal and spatial patterns of these systems. In this context, classification algorithms have been proposed to use information from satellite images to map different land covers. The Time-Weighted Dynamic Time Warping (TWDTW) is an algorithm that has the advantage of working well with datasets with enough amounts of temporal information and seasonality patterns. In the present work, the TWDTW was performed to classify pasture managements in farms located in Western region of São Paulo State in Brazil for the years 2017 and 2018, as a primary study. It was used Normalized Difference Vegetation Index (NDVI) time series images from Moderate Resolution Imaging Spectroradiometer – MODIS sensor (products MOD13Q1 and MYD13Q) with 250 meters of spatial resolution. In classifications for the years 2017 and 2018, it was observed a predominance of traditional pasture. Total areas of degraded and traditional pasture were very similar between 2017 and 2018. The year of 2017 showed higher spatial distribution of intensified pastures than year 2018. The classification achieved satisfying results with complete accuracy in validation. The information collected from field visits were important to analyse general aspects of the results. Therefore, in this pilot study TWDTW algorithm demonstrated to have potential in differentiating classes of pasture management. Next steps will be to explore the possibilities to classify pasture systems in large areas.

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

Water ◽

10.3390/w13111450 ◽

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.

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SEROPREVALENCE AND RISK FACTORS ASSOCIATED TO NEOSPORA CANINUM IN FEMALE BOVINES FROM THE WESTERN SÃO PAULO STATE, BRAZIL

Arquivos do Instituto Biológico ◽

10.1590/1808-1657v78p1832011 ◽

2011 ◽

Vol 78 (2) ◽

pp. 183-189 ◽

Cited By ~ 1

Author(s):

D.M. Aguiar ◽

D.P Lacerda ◽

R.C. Orlandelli ◽

A.O. Medina ◽

S.S Azevedo ◽

...

Keyword(s):

Management Practices ◽

Neospora Caninum ◽

Sao Paulo ◽

Western Region ◽

São Paulo ◽

Paulo State ◽

Production Type ◽

Seropositive Animal ◽

São Paulo State ◽

The Western Region

ABSTRACT The prevalence of anti-Neospora caninum antibodies was evaluated in 1104 cows from 118 farms in the Western region of São Paulo State, Brazil, using indirect immunofluorescence antibody assay. Sixty-five (55.0%; CI 95%: 46.0-63.8%) farms showed at least one seropositive animal. Prevalence over 10% was observed in 33 farms (28.0%; CI 95%: 20.4-36.5%), and over 20% in 18 farms (15.2%; CI 95%: 9.5-22.6%). Prevalence of animals showed 120 (10.9%) positive females (IFAT ? 1:100). The positivity in the farms showed significant association with farms producing more than 50 liters per day. Infection caused by the protozoan N. caninum occurs in the Western region of the state of São Paulo, and although no differences were observed either in relation to the production type or management practices, greater milk yield was related to greater prevalence of infection.

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Host-specificity and morphometrics of female Haemonchus contortus, H. placei and H. similis (Nematoda: Trichostrongylidae) in cattle and sheep from shared pastures in São Paulo State, Brazil

Journal of Helminthology ◽

10.1017/s0022149x14000078 ◽

2014 ◽

Vol 89 (3) ◽

pp. 302-306 ◽

Cited By ~ 9

Author(s):

M.R.L. Silva ◽

M.R.V. Amarante ◽

K.D.S. Bresciani ◽

A.F.T. Amarante

Keyword(s):

Host Specificity ◽

Haemonchus Contortus ◽

Epidemiological Studies ◽

Sao Paulo ◽

Western Region ◽

São Paulo ◽

Paulo State ◽

Predominant Species ◽

São Paulo State ◽

Cattle And Sheep

AbstractTo better evaluate the usefulness of female Haemonchus specimens for specific identification, we undertook a detailed analysis of the morphology of a collection of worms obtained from cattle and sheep in shared pastures. Based on the results, we also more precisely evaluated the host-specificity of Haemonchus contortus, H. placei and H. similis occurring sympatrically in a farm located in the western region of São Paulo State, Brazil. A synlophe analysis was employed to identify the three species of Haemonchus. In cattle, the predominant species was H. similis (90.9%), followed by H. placei (9.1%). With the exception of one H. placei specimen, only H. contortus was found in sheep. The longest body length was found for H. placei specimens, followed by H. contortus and then H. similis. It was possible to distinguish H. similis females from H. contortus and H. placei on the basis of vulval structure. The synlophe analysis proved to be very useful for identification of H. contortus, H. placei and H. similis in epidemiological studies involving different species of ruminants in the same pastures. The finding that H. placei and H. similis were adapted to cattle and that H. contortus was adapted to sheep also confirmed the high host-specificity of the three nematodes species.

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