Physiological and biochemical changes in tree seedlings growing in urban forest soil contaminated with copper in São Paulo, Brazil

2021 ◽  
Author(s):  
Matheus Casarini Siqueira ◽  
Shoey Kanashiro ◽  
Marisa Domingos ◽  
Mirian Cilene Spasiani Rinaldi ◽  
Armando Reis Tavares
Keyword(s):  
Forest Soil ◽  
Urban Forest ◽  
Sao Paulo ◽  
Biochemical Changes ◽  
Tree Seedlings ◽  
São Paulo ◽  
Physiological And Biochemical

scholarly journals Tree Cover for the Year 2010 of the Metropolitan Region of São Paulo, Brazil

Data ◽  
2019 ◽  
Vol 4 (4) ◽  
pp. 145
Author(s):  
Fabien H. Wagner ◽  
Mayumi C.M. Hirye
Keyword(s):  
Ecosystem Services ◽  
Spatial Resolution ◽  
Urban Forest ◽  
Sao Paulo ◽  
Urban Trees ◽  
Aerial Photographs ◽  
Metropolitan Region ◽  
Tree Cover ◽  
São Paulo ◽  
The World

Mapping urban trees with images at a very high spatial resolution (≤1 m) is a particularly relevant recent challenge due to the need to assess the ecosystem services they provide. However, due to the effort needed to produce these maps from tree censuses or with remote sensing data, few cities in the world have a complete tree cover map. Here, we present the tree cover data at 1-m spatial resolution of the Metropolitan Region of São Paulo, Brazil, the fourth largest urban agglomeration in the world. This dataset, based on 71 orthorectified RGB aerial photographs taken in 2010 at 1-m spatial resolution, was produced using a deep learning method for image segmentation called U-net. The model was trained with 1286 images of size 64 × 64 pixels at 1-m spatial resolution, containing one or more trees or only background, and their labelled masks. The validation was based on 322 images of the same size not used in the training and their labelled masks. The map produced by the U-net algorithm showed an excellent level of accuracy, with an overall accuracy of 96.4% and an F1-score of 0.941 (precision = 0.945 and recall = 0.937). This dataset is a valuable input for the estimation of urban forest ecosystem services, and more broadly for urban studies or urban ecological modelling of the São Paulo Metropolitan Region.

scholarly journals Three new species of Mesabolivar (Aranea, Pholcidae) from leaf litter in urban environments in the city of São Paulo, São Paulo, Brazil

2007 ◽  
Vol 97 (2) ◽  
pp. 168-176 ◽  
Author(s):  
Éwerton O. Machado ◽  
Antonio D. Brescovit ◽  
David F. Candiani ◽  
Bernhard A. Huber
Keyword(s):  
Urban Forest ◽  
Abundant Species ◽  
Sao Paulo ◽  
Urban Environments ◽  
Metropolitan Region ◽  
Pitfall Traps ◽  
São Paulo ◽  
Forest Remnants ◽  
Three New Species ◽  
The City

In this study we describe three new litter inhabiting species of Mesabolivar González-Sponga, 1998 from nine urban forest remnants in the metropolitan region of the city of São Paulo, Brazil: M. forceps, M. mairyara and M. cavicelatus. In three of these remnants, we conduced a three year sampling using pitfall traps. Mesabolivar forceps sp. nov. was the most abundant pholcid (n=273 adults), always present in the samples, but with highest numbers in spring and summer. Mesabolivar mairyara sp. nov. was the second most abundant species (n=32), but the majority of individuals were collected in March 2001. Only three individuals of M. cavicelatus sp. nov. were collected.

Urban forest and per capita income in the mega-city of Sao Paulo, Brazil: A spatial pattern analysis

Cities ◽  
2021 ◽  
Vol 111 ◽  
pp. 103099
Author(s):  
Bruna Lara Arantes ◽  
Nicole Rennó Castro ◽  
Leandro Gilio ◽  
Jefferson Lordello Polizel ◽  
Demóstenes Ferreira da Silva Filho
Keyword(s):  
Spatial Pattern ◽  
Capita Income ◽  
Pattern Analysis ◽  
Urban Forest ◽  
Sao Paulo ◽  
Spatial Pattern Analysis ◽  
São Paulo ◽  
Per Capita Income ◽  
Per Capita

scholarly journals Plant community dynamics in an urban forest fragment of the São Paulo Metropolitan Area, Brazil

Hoehnea ◽  
2020 ◽  
Vol 47 ◽  
Author(s):  
Hebert Kondrat ◽  
Sonia Aragaki ◽  
Eduardo Pereira Cabral Gomes
Keyword(s):  
Plant Community ◽  
Community Dynamics ◽  
Urban Forest ◽  
Basal Area ◽  
Management Plan ◽  
Sao Paulo ◽  
Atlantic Rain Forest ◽  
São Paulo ◽  
Forest Fragment ◽  
Plant Community Dynamics

ABSTRACT We present a synthesis (2006-2012) of plant community dynamics in an area (1 ha) of the largest remnant of Atlantic Rain Forest surrounded by São Paulo city. Plants with ≥ 2.5 cm dbh, including the climbers, were sampled in 10 transects (2 × 50 m), and the smaller (> 1 m height, < 2.5 cm dbh) in 10 subtransects (1 × 50 m). We sampled 901 individuals, 125 species (38 families), 83 classified as late-successional species, 12 threatened with extinction and 56 absent in the area management plan, some Endangered (EN) species. The climbers were the most dynamics, they had the largest decrease in basal area; and the larger (> 5.0 cm dbh) and shorter (< 2.5 cm dbh) trees had the highest mortality rates of the shrub-tree synusia. Late species regeneration was predominant. The studied forest showed progression towards more mature successional stages in the monitoring period.

scholarly journals Soil fertility and litterfall assessment in a peri-urban forest of São Paulo, SP: understanding for urban green areas manegement

2019 ◽  
Vol 3 ◽  
pp. 1-16
Author(s):  
MAURÍCIO LAMANO FERREIRA ◽  
Nanci Gonçalves Vieira De Andrade ◽  
Mayara Cristina Laureano Dantas Da Costa ◽  
Denis Martins Araujo ◽  
Pedro Luiz Côrtes ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Urban Forest ◽  
Sao Paulo ◽  
São Paulo ◽  
Urban Green ◽  
Urban Green Areas ◽  
Green Areas

Air contaminants and litter fall decomposition in urban forest areas: The case of São Paulo - SP, Brazil

2017 ◽  
Vol 155 ◽  
pp. 314-320 ◽  
Author(s):  
Maurício Lamano Ferreira ◽  
Andreza Portella Ribeiro ◽  
Caroline Rodrigues Albuquerque ◽  
Ana Paula do Nascimento Lamano Ferreira ◽  
Rubens César Lopes Figueira ◽  
...  
Keyword(s):  
Urban Forest ◽  
Sao Paulo ◽  
São Paulo ◽  
Litter Fall ◽  
Air Contaminants

scholarly journals Energy potential of wood waste from a tropical urban forest

2020 ◽  
Vol 9 (9) ◽  
pp. e451997478
Author(s):  
Debora Klingenberg ◽  
Adriana Maria Nolasco ◽  
Ananias Francisco Dias Júnior ◽  
Luana Candaten ◽  
Annie Karoline Lima Cavalcante ◽  
...  
Keyword(s):  
Urban Forest ◽  
Urban Forestry ◽  
Basic Density ◽  
Sao Paulo ◽  
The State ◽  
Urban Trees ◽  
Wood Waste ◽  
São Paulo ◽  
Energy Potential ◽  
Wood Residue

Urban tropical forest species generate large amounts of wood waste by pruning and removing urban trees, which can be an accessible source of biomass that could be used to generate energy instead of being disposed of irregularly. The objective of this study was to evaluate the potential for energy production of the wood residue of seven species most used in urban forestry in the State of São Paulo, Brazil, by determining the physical, chemical and energetic characteristics. Wood waste of 7 common urban forests species in the State of São Paulo were collected in the city of Piracicaba, characterized (humidity, basic density and bulk density), chemically (extract content, volatile materials, fixed carbon and ash content) and energetically (higher, lower, useful calorific power, density energy and thermogravimetric analysis). The highest value of basic density was found in the species Cenostigma pluviosum (653.76 kg/m³), ​​all species had higher calorific values ​​greater than 19 MJ/kg and the energy density of the species varied between 4.45 to 10,80 GJ/m³. The use of these wood residues for direct combustion is a viable alternative and can be considered as a solution to replace the incorrect disposal, which is still a common practice in many cities in developing countries.

scholarly journals Extra group copulation in Alouatta caraya (Primates, Atelidae) living on an island of urban forest from southeast São Paulo, Brazil

2013 ◽  
Author(s):  
André Fernando de Oliveira Fermoseli ◽  
Zelinda Maria Braga Hirano ◽  
Wagner Ferreira dos Santos
Keyword(s):  
Urban Forest ◽  
Sao Paulo ◽  
São Paulo ◽  
Alouatta Caraya

scholarly journals Volatile organic compounds (VOC) variation in Croton floribundus (L.) Spreng. related to environmental conditions and ozone concentration in an urban forest of the city of São Paulo, São Paulo State, Brazil

Hoehnea ◽  
2018 ◽  
Vol 45 (2) ◽  
pp. 184-191 ◽  
Author(s):  
Vanessa Palermo Bolsoni ◽  
Débora Pinheiro de Oliveira ◽  
Giselle da Silva Pedrosa ◽  
Silvia Ribeiro de Souza
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Environmental Conditions ◽  
Urban Forest ◽  
Sao Paulo ◽  
São Paulo ◽  
Paulo State ◽  
Volatile Organic ◽  
São Paulo State ◽  
Ozone Levels

ABSTRACT Volatile organic compounds (VOC) are emitted by vegetation in response to different kinds of stress, such as herbivory, environmental conditions and air pollutants. The aim of this study was to identify the VOC emitted by seedlings of Croton floribundus (L.) Spreng. exposed to a polluted environment and analyze the relationship among classes of compounds emitted, ozone levels and changes in climate conditions. Two exposures were carried out, one in winter (June to August 2012) and another in summer (January to April 2013), in the Parque Estadual das Fontes do Ipiranga, city of São Paulo, São Paulo State, Brazil. We identified 26 compounds that are grouped into oxygenates, aromatics, monoterpenes and sesquiterpenes. The emission of sesquiterpenes was inhibited in summer, while those of the oxygenated and aromatic compounds were induced. The emission of volatiles was correlated to ozone levels (AOT 40). Our results suggest that the levels of atmospheric ozone detected in the summer can increase the induction of oxygenates and reduce the emission of monoterpenes in C. floribundus plants.

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