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  1. Article ; Online: Utilizing prospective space-time scan statistics to discover the dynamics of coronavirus disease 2019 clusters in the State of São Paulo, Brazil.

    Ferreira, Ricardo Vicente / Martines, Marcos Roberto / Toppa, Rogério Hartung / Assunção, Luiza Maria de / Desjardins, Michael Richard / Delmelle, Eric

    Revista da Sociedade Brasileira de Medicina Tropical

    2022  Volume 55, Page(s) e0607

    Abstract: Background: The number of deaths and people infected with coronavirus disease 2019 (COVID-19) in Brazil has steadily increased in the first few months of the pandemic. Despite the underreporting of coronavirus cases by government agencies across the ... ...

    Abstract Background: The number of deaths and people infected with coronavirus disease 2019 (COVID-19) in Brazil has steadily increased in the first few months of the pandemic. Despite the underreporting of coronavirus cases by government agencies across the country, São Paulo has the highest rate among all Brazilian states.
    Methods: To identify the highest-risk municipalities during the initial outbreak, we utilized daily confirmed case data from official reports between February 25 and May 5, 2020, which were aggregated to the municipality level. A prospective space-time scan statistic was conducted to detect active clusters in three different time periods.
    Results: Our findings suggest that approximately 4.6 times more municipalities belong to a significant space-time cluster with a relative risk (RR) > 1 on May 5, 2020.
    Conclusions: Our study demonstrated the applicability of the space-time scan statistic for the detection of emerging clusters of COVID-19. In particular, we identified the clusters and RR of municipalities in the initial months of the pandemic, explaining the spatiotemporal patterns of COVID-19 transmission in the state of São Paulo. These results can be used to improve disease monitoring and facilitate targeted interventions.
    MeSH term(s) Brazil/epidemiology ; COVID-19 ; Cities ; Disease Outbreaks ; Humans ; Pandemics
    Language English
    Publishing date 2022-08-05
    Publishing country Brazil
    Document type Journal Article
    ZDB-ID 1038126-0
    ISSN 1678-9849 ; 0037-8682
    ISSN (online) 1678-9849
    ISSN 0037-8682
    DOI 10.1590/0037-8682-0607-2021
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 2726: Show issues Location:
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    Jg. 1995 - 2021: Lesesall (2.OG)
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  2. Article: Seasonal and vertical distribution of floral resources and its implications for the conservation of pollinators

    Silva, Cláudia Inês da / Filho, Alípio José de Souza Pacheco / Toppa, Rogério Hartung / Arena, Mariana Victorino Nicolosi / Oliveira, Paulo Eugênio de

    Flora. 2021 May, v. 278

    2021  

    Abstract: The diversity of plant species in blooming throughout the year is a way of ensuring the presence of floral resources, as the spatiotemporal distribution of these resources assists in the movement of pollinators and guarantees local ecosystem services. ... ...

    Abstract The diversity of plant species in blooming throughout the year is a way of ensuring the presence of floral resources, as the spatiotemporal distribution of these resources assists in the movement of pollinators and guarantees local ecosystem services. The aim of this study was to describe the seasonal variations in the vertical distribution of the floral resources that keep the pollinators in Cerrado areas, the savanna region in Central Brazil, a biodiversity hotspot that depends more than 80% on bees for pollination. We studied four cerrado stricto sensu areas and evaluated monthly the flowering phenology, taking into account the number of individuals for each plant species blooming in all vertical strata (arboreal, shrubby, herbaceous, and lianas) and main floral resources (nectar, pollen, and floral oil). We evaluated the annual distribution of flowering plant species and individuals, and the availability of floral resources. We found a seasonal flowering pattern for the whole cerrado stricto sensu, with differences between areas, strata and floral resources types. The floral resources varied idiosyncratically among the strata over time, suggesting complementary blooming patterns throughout the year. The shrubby, herbaceous and liana species were key determinants in the availability of floral resources through the seasons. Our results reinforce the importance of including all the strata in plant surveys, as well as highlight the importance of the vertical stratification in the Cerrado plant formations as a source of floral resources during the time in which there are fewer resources available for pollinators in surrounding forest areas.
    Keywords biodiversity ; cerrado ; ecosystems ; flora ; forests ; nectar ; oils ; phenology ; pollen ; pollination ; savannas ; spatial distribution ; Brazil
    Language English
    Dates of publication 2021-05
    Publishing place Elsevier GmbH
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 5580-3
    ISSN 0367-2530 ; 0373-6490
    ISSN 0367-2530 ; 0373-6490
    DOI 10.1016/j.flora.2021.151787
    Database NAL-Catalogue (AGRICOLA)

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  3. Article ; Online: Protected areas and agricultural expansion: Biodiversity conservation versus economic growth in the Southeast of Brazil.

    Moraes, Mayra Cristina Prado de / Mello, Kaline de / Toppa, Rogério Hartung

    Journal of environmental management

    2017  Volume 188, Page(s) 73–84

    Abstract: The conversion of natural ecosystems to agricultural land and urban areas plays a threat to the protected areas and the natural ecosystems conservation. The aim of this paper is to provide an analysis of the agricultural expansion and its impact on the ... ...

    Abstract The conversion of natural ecosystems to agricultural land and urban areas plays a threat to the protected areas and the natural ecosystems conservation. The aim of this paper is to provide an analysis of the agricultural expansion and its impact on the landscape spatial and temporal patterns in a buffer zone of a protected area located in the transition zone between the Atlantic Forest and Cerrado, in the State of São Paulo, Brazil. The land use and land cover were mapped between 1971 and 2008 and landscape metrics were calculated to provide a spatiotemporal analysis of the forest structure and the expansion of the croplands. The results showed that the landscape patterns were affected by the economic cycles. The predominant crop surrounding the protected area is sugar cane, which increased by 39% during this period, followed by citrus. This landscape change is connected to the Brazilian oil crisis in 1973. The rapid expansion of sugar cane was largely driven by Brazil's biofuel program, the "Proálcool" (pro-alcohol), a project in 1975 that mixed ethanol with gas for automotive fuel. The forest loss occurred mainly between 1971 and 1988, decreasing the forest cover from 17% in 1971 to 12.7% in 2008. Most of the forest patches are smaller than 50 ha and has low connectivity. Throughout the years, the fragments in the buffer zone have become smaller and with an elongated shape, and the park has become isolated. This forest fragmentation process and the predominance of monoculture lands in the buffer zone threaten the protected areas, and can represent a barrier for these areas to provide the effective biodiversity conservation. The measures proposed are necessary to ensure the capability of this ecosystem to sustain its original biodiversity.
    MeSH term(s) Agriculture ; Biodiversity ; Brazil ; Conservation of Natural Resources/methods ; Crops, Agricultural ; Economic Development ; Ecosystem ; Environment ; Forestry/statistics & numerical data ; Forests ; Saccharum
    Language English
    Publishing date 2017-03-01
    Publishing country England
    Document type Journal Article
    ZDB-ID 184882-3
    ISSN 1095-8630 ; 0301-4797
    ISSN (online) 1095-8630
    ISSN 0301-4797
    DOI 10.1016/j.jenvman.2016.11.075
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    In stock of ZB MED Bonn / Germany

    Z 7556: Show issues

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  4. Article: Spatial modeling applied to environmental monitoring: identifying sources of potentially toxic metals in aquatic system

    Marzola, Elisabete Leide / Botero, Wander Gustavo / Cavagis, Alexandre Donizeti Martins / de Oliveira, Luciana Camargo / do Carmo, Janaina Braga / Martines, Marcos Roberto / Pitombo, Leonardo Machado / Rosa, Luana Maria Tavares / Toppa, Rogério Hartung

    Environmental geochemistry and health. 2019 June, v. 41, no. 3

    2019  

    Abstract: Aquatic contamination by potentially toxic metals is a problem that has been aggravated, especially due to the quantity and the diversity of sources. Locating these sources is not always an easy task, especially because of the wide variety of ... ...

    Abstract Aquatic contamination by potentially toxic metals is a problem that has been aggravated, especially due to the quantity and the diversity of sources. Locating these sources is not always an easy task, especially because of the wide variety of possibilities. In this context, the application of geostatistical methods may represent an excellent tool to find out sources of metal contaminants in aquatic systems. Thus, the objective of this work was to elaborate an approach to identify sources of potentially toxic metals (Zn, Ba, Pb, Cr, Mn and Fe), by relating their spatial–temporal variations with the local land use patterns, along a longitudinal profile of the Pirapora River, located in the State of Sao Paulo, Brazil. For this purpose, water samples were collected at different points, taking into consideration each specific land use pattern and quantifying the metals contents by microwave plasma atomic emission spectrometry. In this work, thirteen land use patterns have been identified: mining, forestry, abandoned pasture, water, urban area, human occupation, floodplain, bare soil, temporary crop, roads, forest, streets and pasture. The results revealed temporal variations for the metals Ba, Cr, Fe, and Pb and spatial for Zn and Mn, making possible to correlate the presence of these two latter metals with mining and forestry, the most proeminent activities in the region. Overall, this work proposes a model which brings together geoprocessing and analytical methods, in order to correlate spatial–temporal variations of potentially toxic metals with specific land use patterns of a determined region, aiming the environmental monitoring.
    Keywords atomic absorption spectrometry ; barium ; chromium ; environmental monitoring ; floodplains ; forestry ; forests ; geostatistics ; humans ; iron ; land use ; lead ; manganese ; mining ; models ; pastures ; rivers ; roads ; soil ; temporal variation ; toxicity ; urban areas ; water pollution ; zinc ; Brazil
    Language English
    Dates of publication 2019-06
    Size p. 1339-1350.
    Publishing place Springer Netherlands
    Document type Article
    ZDB-ID 52039-1
    ISSN 1573-2983 ; 0142-7245 ; 0269-4042
    ISSN (online) 1573-2983
    ISSN 0142-7245 ; 0269-4042
    DOI 10.1007/s10653-018-0218-5
    Database NAL-Catalogue (AGRICOLA)

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    Einzelsign.: Show issues

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  5. Article ; Online: Spatial modeling applied to environmental monitoring: identifying sources of potentially toxic metals in aquatic system.

    Marzola, Elisabete Leide / Rosa, Luana Maria Tavares / Toppa, Rogério Hartung / Martines, Marcos Roberto / Pitombo, Leonardo Machado / Cavagis, Alexandre Donizeti Martins / do Carmo, Janaina Braga / Botero, Wander Gustavo / de Oliveira, Luciana Camargo

    Environmental geochemistry and health

    2018  Volume 41, Issue 3, Page(s) 1339–1350

    Abstract: Aquatic contamination by potentially toxic metals is a problem that has been aggravated, especially due to the quantity and the diversity of sources. Locating these sources is not always an easy task, especially because of the wide variety of ... ...

    Abstract Aquatic contamination by potentially toxic metals is a problem that has been aggravated, especially due to the quantity and the diversity of sources. Locating these sources is not always an easy task, especially because of the wide variety of possibilities. In this context, the application of geostatistical methods may represent an excellent tool to find out sources of metal contaminants in aquatic systems. Thus, the objective of this work was to elaborate an approach to identify sources of potentially toxic metals (Zn, Ba, Pb, Cr, Mn and Fe), by relating their spatial-temporal variations with the local land use patterns, along a longitudinal profile of the Pirapora River, located in the State of Sao Paulo, Brazil. For this purpose, water samples were collected at different points, taking into consideration each specific land use pattern and quantifying the metals contents by microwave plasma atomic emission spectrometry. In this work, thirteen land use patterns have been identified: mining, forestry, abandoned pasture, water, urban area, human occupation, floodplain, bare soil, temporary crop, roads, forest, streets and pasture. The results revealed temporal variations for the metals Ba, Cr, Fe, and Pb and spatial for Zn and Mn, making possible to correlate the presence of these two latter metals with mining and forestry, the most proeminent activities in the region. Overall, this work proposes a model which brings together geoprocessing and analytical methods, in order to correlate spatial-temporal variations of potentially toxic metals with specific land use patterns of a determined region, aiming the environmental monitoring.
    MeSH term(s) Agriculture ; Brazil ; Environmental Monitoring/methods ; Forests ; Humans ; Metals, Heavy/analysis ; Metals, Heavy/toxicity ; Mining ; Models, Theoretical ; Rivers ; Soil/chemistry ; Spatio-Temporal Analysis ; Water Pollutants, Chemical/analysis ; Water Pollutants, Chemical/toxicity
    Chemical Substances Metals, Heavy ; Soil ; Water Pollutants, Chemical
    Language English
    Publishing date 2018-11-20
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 52039-1
    ISSN 1573-2983 ; 0142-7245 ; 0269-4042
    ISSN (online) 1573-2983
    ISSN 0142-7245 ; 0269-4042
    DOI 10.1007/s10653-018-0218-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 4723: Show issues Location:
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    ab Jg. 2022: Lesesaal (EG)

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