Spatial patterns of soil attributes and components in a mangrove system in Southeast Brazil (São Paulo)

Temporal and spatial variation of Nitella furcata (Roxburgh ex Bruzelius) C. Agardh emend. R.D. Wood subsp. mucronata (A. Braun) R.D. Wood var. mucronata f. oligospira (A. Braun) R.D. Wood were studied at the Ninféias pond (23°38'18.9"S, 46°37'16.3"W), a tropical, shallow, mesotrophic reservoir located in the Parque Estadual das Fontes do Ipiranga Biological Reserve, Municipality of São Paulo, southeast Brazil. Water samples were collected monthly from October/1996 to October/1997 for turbidity, electric conductivity, pH, alkalinity, dissolved oxygen, nutrients, biomass, and algal phenology analysis. Spatial distribution pattern of algal biomass showed that all four sampling stations were similar among themselves during the whole study period. Regarding the temporal variation, greatest algal total biomass values (98.35-266.06 g.m-2) were measured during the rainy period whereas the smallest ones (48.86-170.56 g.m-2) were detected during the dry period. Algal population density peaked at all four sampling stations from October/1996 to April/1997 (rainy period) when the greatest values of air and water temperature, precipitation, solar radiation, turbidity, total nitrogen, and ammonium were measured allowing favorable conditions for the algal growth. Period from May/1997 (late fall) to October/1997 (early spring) was favorable to the development of reproductive structures (nucules and globules) with consequent decrease of algal biomass and population density, clearly suggesting the greatest energy allocation towards the development of sexual reproductive structures. This fact was confirmed by the canonic correspondence analysis that indicated strong correlation between nucules length and width, number of nucules per plant, and oospores length and width with the low values of pH and high ones of dissolved inorganic matter detected during the dry period. Consequently, environmental factors such as increasing of water temperature and nutrients availability at the Ninféias pond acted decisively towards growth and accumulation of algal biomass.

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Genomic Surveillance of Yellow Fever Virus Epizootic in São Paulo, Brazil, 2016 – 2018

10.1101/645341 ◽

2019 ◽

Cited By ~ 3

Author(s):

S. C. Hill ◽

R. P. de Souza ◽

J. Thézé ◽

I. Claro ◽

R. S. Aguiar ◽

...

Keyword(s):

Yellow Fever ◽

Yellow Fever Virus ◽

Sao Paulo ◽

The State ◽

Fever Virus ◽

São Paulo ◽

Paulo State ◽

Southeast Brazil ◽

São Paulo State ◽

Substantial Heterogeneity

AbstractSão Paulo (SP), a densely inhabited state in southeast Brazil that contains the fourth most populated city in the world, recently experienced its largest yellow fever virus (YFV) outbreak in decades. YFV does not normally circulate extensively in SP, so most people were unvaccinated when the outbreak began. Surveillance in non-human primates (NHPs) is important for determining the magnitude and geographic extent of an epizootic, thereby helping to evaluate the risk of YFV spillover to humans. Data from infected NHPs can give more accurate insights into YFV spread than when using data from human cases alone. To contextualise human cases, identify epizootic foci and uncover the rate and direction of YFV spread in SP, we generated and analysed virus genomic data and epizootic case data from NHP in SP. We report the occurrence of three spatiotemporally distinct phases of the outbreak in SP prior to February 2018. We generated 51 new virus genomes from YFV positive cases identified in 23 different municipalities in SP, mostly sampled from non-human primates between October 2016 and January 2018. Although we observe substantial heterogeneity in lineage dispersal velocities between phylogenetic branches, continuous phylogeographic analyses of generated YFV genomes suggest that YFV lineages spread in São Paulo state at a mean rate of approximately 1km per day during all phases of the outbreak. Viral lineages from the first epizootic phase in northern São Paulo subsequently dispersed towards the south of the state to cause the second and third epizootic phases there. This alters our understanding of how YFV was introduced into the densely populated south of SP state. Our results shed light on the sylvatic transmission of yellow fever in highly fragmented forested regions in SP state and highlight the importance of continued surveillance of zoonotic pathogens in sentinel species.Author’s SummarySince July 2016, the southeast region of Brazil has experienced the largest yellow fever virus (YFV) outbreak in decades. São Paulo is the most densely populated state in southeast Brazil. The outbreak has caused serious public health concern in the state, as YFV does not normally circulate widely there and most of the 21 million inhabitants were correspondingly unvaccinated against YFV when the outbreak began. In Brazil, YFV typically circulates among non-human primates, and human cases represent isolated spillover events from this predominantly sylvatic cycle. Understanding the epidemiological dynamics and spread of YFV in non-human primates is therefore critical for contextualising human cases, and guiding vaccination strategies that can better protect local human populations. Here, we aim to contextualise human cases, identify epizootic foci and uncover the rate and direction of YFV spread in SP. We analyse the geographic and temporal distribution of observed cases of YFV in non-human primates in São Paulo state, and identify three distinct phases of the epizootic. We generate sequence data from 51 YFV-positive cases and perform phylogenetic and phylogeographic analyses aimed at understanding the spatial spread of YFV in São Paulo state. Analyses of these data indicate that YFV spread from the north of São Paulo state into more densely populated southern regions. Although we observe substantial heterogeneity in the rate at which different sampled YFV lineages spread, the typical rate of spread was low with a mean rate of ~1 km per day. This is consistent with a scenario in which the majority of transmission events occurred between non-human primates and sylvatic vectors across forested patches.Article Summary LineGenomic surveillance of yellow fever in São Paulo during the 2016-2018 epizootic

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Water and vegetation indices by using MODIS products for eucalyptus, pasture, and natural ecosystems in the eastern São Paulo state, Southeast Brazil

Remote Sensing for Agriculture, Ecosystems, and Hydrology XIX ◽

10.1117/12.2277930 ◽

2017 ◽

Author(s):

Antônio Heriberto C. de Castro Teixeira ◽

Janice F. Leivas ◽

Carlos C. Ronquim ◽

Edlene Aparecida M. Garçon ◽

Gustavo Bayma-Silva

Keyword(s):

Vegetation Indices ◽

Sao Paulo ◽

São Paulo ◽

Natural Ecosystems ◽

Paulo State ◽

Southeast Brazil ◽

São Paulo State

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From sambaquis (shell mounds) to plastic debris: a summary of the geological imprint of human occupation in the coast of São Paulo (Southeast Brazil)

Quaternary and Environmental Geosciences ◽

10.5380/abequa.v9i1.51965 ◽

2018 ◽

Vol 9 (1) ◽

Author(s):

Alynne Almeida Affonso ◽

Michel Michaelovitch De Mahiques ◽

Paulo Alves de Lima Ferreira ◽

Diana Melo Italiani ◽

Cristina Celia Martins ◽

...

Keyword(s):

Sao Paulo ◽

São Paulo ◽

Human Occupation ◽

Plastic Debris ◽

Southeast Brazil ◽

Shell Mounds

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Crustal and tectonic features of northeast of São Paulo State and southwest of Minas Gerais State based on gravimetric studies in southeast Brazil

10.1190/sbgf2005-145 ◽

2005 ◽

Author(s):

Maximilian Fries ◽

Walter Malagutti Filho ◽

Norberto Morales ◽

João Carlos Dourado

Keyword(s):

Minas Gerais ◽

Sao Paulo ◽

São Paulo ◽

Paulo State ◽

Southeast Brazil ◽

Minas Gerais State ◽

São Paulo State ◽

Tectonic Features

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Bee Health in Apiaries in the Paraíba Valley, São Paulo State, Southeast Brazil

Sociobiology ◽

10.13102/sociobiology.v61i3.307-312 ◽

2014 ◽

Vol 61 (3) ◽

Cited By ~ 6

Author(s):

Lubiane Guimarães Santos ◽

Maria Luisa Teles Marques Florêncio Alves ◽

Dejair Message ◽

Fabio De Assis Pinto ◽

Marcos Vinícius G. Barbosa da Silva ◽

...

Keyword(s):

Sao Paulo ◽

São Paulo ◽

Paulo State ◽

Southeast Brazil ◽

Bee Health ◽

São Paulo State

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Cystoderma, Cystodermella and Ripartitella in Atlantic Forest, São Paulo State, Brazil

Hoehnea ◽

10.1590/s2236-89062009000200011 ◽

2009 ◽

Vol 36 (2) ◽

pp. 339-348 ◽

Cited By ~ 2

Author(s):

Marina Capelari ◽

Tatiane Asai

Keyword(s):

Atlantic Forest ◽

Sao Paulo ◽

Type Locality ◽

Atlantic Rainforest ◽

São Paulo ◽

Paulo State ◽

Southeast Brazil ◽

Rdna Sequences ◽

São Paulo State ◽

First Time

This paper reports on the genera Cystoderma, Cystodermella and Ripartitella from Atlantic Rainforest, Southeast Brazil. They are represented by Cystoderma chocoanum, Cystodermella contusifolia, C. sipariana and Ripartitella brasiliensis. Cystoderma chocoanum is reported for the first time outside the type locality (Colombia) and its relationship with others species of Cystoderma, based on nLSU rDNA sequences, is discussed.

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