scholarly journals Species richness and geographic distribution of the genera Chydorus and Pseudochydorus (Cladocera, Chydoridae) in São Paulo State

2008 ◽  
Vol 8 (1) ◽  
pp. 61-63 ◽  
Author(s):  
Maria José Santos-Wisniewski ◽  
Odete Rocha ◽  
Adriana Maria Guntzel ◽  
Takako Matsumura-Tundisi

The Chydorus and Pseudochydorus genera are widely distributed around the world. Some species of Chydorus are among the commonest anomopods and Pseudochydorus globosus, the only species of the genus, is believed cosmopolitan. This study was part of the project " Zooplanktonic biodiversity and state of degradation of continental water ecosystems in São Paulo State" , itself a part of the FAPESP/BIOTA Program - The Virtual Institute of Biodiversity (www.biotasp.org.br), the aim being to make an inventory and analyze the distribution of species of the genera Chydorus and Pseudochydorus in São Paulo State, Brazil. In total, 373 samples were collected from 223 water bodies in the Water Resources Management Units of São Paulo State, between 9/9/1999 and 8/28/2002. The sampled sites varied from small streams, rivers, ponds, lakes up to big reservoirs. Six species of the genus Chydorus and one of the genus Pseudochydorus were recorded. The most common and widely distributed species were Chydorus eurynotus and Chydorus pubescens. The species Chydorus parvireticulatus occurred only in one Water Resources Management Unit of the state, and constituted the first recorded of this species in São Paulo State.

2010 ◽  
Vol 53 (5) ◽  
pp. 1127-1136 ◽  
Author(s):  
Jozrael Henriques Rezende ◽  
José Salatiel Rodrigues Pires ◽  
Eduardo Mario Mendiondo

The aim of this work was to study the influence of natural vegetation in two subwatersheds of the Tietê-Jacaré Water Resources Management Unit in São Paulo State on the pulse of their rivers. In Jacaré-Pepira Subwatershed, having higher remaining cover index, pulses were more predictable and had lower amplitude in the study period, indicating less perturbation of the water body and higher resilience of the aquatic ecosystem. Jacaré-Pepira River specific mean discharge was higher than the Q5% calculated through the Hydrologic Regionalization Method for São Paulo State, whereas Jaú River mean discharge was lower than Q5%. The minimum discharge recorded for Jacaré-Pepira River was higher than Q7.10 and equal to Q95%, whereas for Jaú River this value was practically equal to Q7,10 and lower than Q95%..


Water Policy ◽  
2016 ◽  
Vol 18 (6) ◽  
pp. 1353-1366 ◽  
Author(s):  
Marina Costa Barbosa ◽  
Shahbaz Mushtaq ◽  
Khorshed Alam

Integrated water resources management approaches have been developed worldwide to improve water resources management practices. There are however, lingering issues with reference to the applicability of its integrated principles, especially when shifting from policy to practice (action). By conducting an exploratory case study in the Sao Paulo State, Brazil, this paper explores different stakeholders' perspectives regarding the water policy (Water Act of 1991). Through analysing institutional and water governance arrangements, the research assesses if current water policy is being translated into practice. Analysis suggests that the water policy and proposed principles are aligned with international approaches for water resources management. However, results also indicate that the principles by themselves are not sufficient to guarantee successful practice of a decentralised, participatory and integrated water resources management system. In a complex water management system, such as the one in the Sao Paulo State, coordination among different government levels and sectors is considered to be a key element to improve the likelihood of water policy implementation.


1989 ◽  
Vol 84 (4) ◽  
pp. 515-526 ◽  
Author(s):  
C. B. Woodworth-Lynas ◽  
J. R. Caines ◽  
G. F. Bennett

The blood parasites of 15,574 birds representing 266 species of 43 families from primarily three areas in São Paulo State, Brazil were examined for haematozoa. Only 1240 (8.0% of 121 species fo 32 families were infected with blood parasites. This prevalence was similar to that reported in a previous study. Species of Haemoproteus were the most commonly encountered haematozoans (38.9%), followed by microfilaria (30.7%), Trypanosoma (13.7%), Plasmodium (7.5%) and Leucocytozoon (0.8%). Prevalence of parasitism was significantly different between the three major areas sampled. It was shown that this was due in part to differences in the avifaunas at both the familial and species levels. Prevalence varied markedly in only one of the 10 years of the study. Monthly fluctuations in prevalence were largely due to changes in relative proportions of highlytion of both. Prevalences of both microfilaria and Trypanosoma were higher than reported for any other similar survey in the world.


2002 ◽  
Vol 62 (4a) ◽  
pp. 615-620 ◽  
Author(s):  
T. MATSUMURA-TUNDISI ◽  
W. M. SILVA

The aim of this work is clarify the identification of Mesocyclops ogunnus that occur in several reservoirs in the State of São Paulo and that was previously identified as Mesocyclops kieferi. These two species are closely related species with very similar characteristics. The differential characteristics are presented and the distribution of both species in the world is discussed.


2012 ◽  
Vol 12 (3) ◽  
pp. 21-34 ◽  
Author(s):  
Vadim Ravara Viviani ◽  
Raphael Machado dos Santos

Brazil hosts the richest biodiversity of bioluminescent beetles in the world. Several species are found in the Atlantic rain forest, one of the richest and most threatened tropical forests in the world. We have catalogued the biodiversity of bioluminescent species mainly of Elateroidea superfamily occurring in one of the last largest and most preserved remnants of Atlantic rain forest, located at the Biological Station of Boracéia of São Paulo University (Salesopolis, SP, Brazil). This site accounted with the largest diversity ever found for a single place in São Paulo State, with 39 species: Lampyridae (30), Phengodidae (5), Elateridae (3) and Staphylinidae (1). This fauna has unique species that were not found in any other places of Atlantic forest in São Paulo state, especially fireflies from the Lampyrinae tribes (Cratomorphini, Lamprocerini, Lucidotini), the subfamilies Amydetinae and Photurinae, and the phengodids Pseudophengodes and Brasilocerus sp.2. Most species are found in dense Ombrophyl forest or at their border, and a few ones are found dwelling in the few open fields around the forest. There is a predominance of glowing patterns in the green region among forest inhabiting species when compared with open field fireflies.


Author(s):  
Hyun Mo Yang ◽  
Luis Pedro Lombardi Junior ◽  
Ariana Campos Yang

AbstractBackgroundAt the beginning of 2020, SARS-CoV-2 spread to all continents, and since then, mutations have appeared in different regions of the world. The appearance of more virulent mutations leads to asseverate that they are also more transmissible. We analyzed the lower and higher virulent SARS-CoV-2 epidemics to establish a relationship between transmissibility and virulence based on a mathematical model.MethodsA compartmental mathematical model based on the CoViD-19 natural history encompassing the age-dependent fatality was applied to evaluate the SARS-CoV-2 transmissibility and virulence. The transmissibility was measured by the basic reproduction number R0 and the virulence by the proportion of asymptomatic individuals. The model parameters were fitted considering the observed data from São Paulo State.ResultsThe numbers of severe CoViD-19 and deaths are three times higher, but R0 is 25% lower in more virulent SARS-CoV-2 transmission than in a less virulent one. However, the number of more virulent SARS-CoV-2 transmitting individuals is 25% lower, mainly due to symptomatic individuals’ isolation, explaining the increased transmission in lower virulence.ConclusionsThe quarantine study in São Paulo State showed that the more virulent SARS-CoV-2 resulted in a higher number of fatalities but less transmissible than the less virulent one. One possible explanation for the number of deaths surpassing that predicted by the low virulent SARS-CoV-2 infection could be the transmission of more virulent variant(s).


2020 ◽  
Vol 24 (1) ◽  
pp. 87
Author(s):  
Flavia Darre Barbosa ◽  
Anayra Giacomelli Lamas Alcantara ◽  
Luiz Eduardo Moschini ◽  
Érica Pugliesi ◽  
Mauricio José Rosso Pinto ◽  
...  

O estudo procurou entender como é tratada a questão das águas subterrâneas, sobretudo das áreas de afloramento do Sistema Aquífero Guarani no estado de São Paulo nas Unidades de Gerenciamento de Recursos Hídricos Pardo e Tietê/Jacaré, em relação às Legislações de Recursos Hídricos nacional e estadual, e de que forma estas áreas são consideradas na gestão destas unidades. Para tanto, realizou uma revisão bibliográfica a respeito das leis brasileiras e paulistas de recursos hídricos, e pesquisa documental no portal do Sistema de Informação e Gerenciamento de Recursos Hídricos. Como principal resultado, foi possível verificar que as águas subterrâneas, principalmente na área de afloramento do SAG, ainda são abordadas de forma superficial, não havendo as garantias necessárias para que a gestão integrada e descentralizada dos recursos hídricos ocorra de maneira efetiva.Palavras-chave: Água subterrânea. Aquífero guarani. Políticas de recursos hídricos. Área de afloramento. Unidades de Gerenciamento de Recursos Hídricos do Estado de São Paulo.OUTCROPS AREAS OF THE GUARANI AQUIFER (SP) AND WATER RESOURCES POLICIES: measures for managementAbstractThe research sought to understand how the Water Resources Legislation addresses the management of outcrop areas of the Guarani Aquifer System in the state of São Paulo, specifically in the Pardo and Tietê/Jacaré Water Resources Management Units. Therefore, a bibliographical review was carried out regarding the Brazilian and São Paulo laws of water resources, as well as a documentary research in the portal of the System of Information and Management of Water Resources. As a main result it was possible to verify that groundwater, mainly in the outcrop area of the SAG, is still superficially addressed, and there is no guarantee that the integrated and decentralized management of water resources will be effectible apply.Keywords: Groundwater. Guarani aquifer. Water resources policies. Outcrops. Water Resources Management Units (UGRHIS) of the State of São Paulo.


2016 ◽  
Vol 16 (1) ◽  
Author(s):  
Raphael M. Santos ◽  
Marcelo Nivert Schlindwein ◽  
Vadim R. Viviani

Brazil is the country with the largest number of bioluminescent beetle species in the world. However, estimates suggest that this number could much be higher, since many species remain to be discovered. In this work we made a survey of the species of bioluminescent beetles in Serra de Paranapiacaba - the largest remnant of Atlantic Forest in São Paulo State. The survey was done at Intervales State Park, Carlos Botelho State Park and municipality of Tapiraí and the following species were collected: Aspisoma lineatum, Aspisoma physonotum, Aspisoma fenestrata, Cratomorphus besckey, Cratomorphus distinctus, Photinus penai, Photinus sp1, Photinus sp9, Ethra aff. malledicta or axilaris, Ethra aff. adicta , Lucidotini incertae sedis, Cladodes flabellicornis, Cladodes demoulini, Amydetes lucernuta, Bicellonycha sp8, Bicellonycha ornaticollis, Pyrogaster lunifer, Pyrogaster moestus, Pyrogaster sp2, Pyrogaster sp5, Pyrogaster sp6, Photuris lugubris, Photuris sp1, Photuris sp7, Stenophrixotrix sp1, Brasilocerus sp1, Pseudophengodes sp1, Hapsodrilus pyrotis, Hypsiophtalmus sp1, Ptesimopsia luculenta, Pyroptesis cincticollis, Pyrearinus brevicolis, Pyrearinus candelarius, Pyrearinus micatus, Pyrophorus divergens. Our data show that Serra de Paranapiacaba is the second richest area in São Paulo state, especially in elaterids, with unique species typical of this area and species common to other investigated sites such as the Biological Station of Boracéia (in Salesópolis county) and the urbanized areas in the between Campinas - Sorocaba- São Paulo, originally covered to the Atlantic Rainforest.


2020 ◽  
Vol 27 (2) ◽  
Author(s):  
Leonardo Ferreira Reis ◽  
Francisco José da Costa Alves

Abstract: The sugarcane agro-industry complex of São Paulo State, Brazil, has undergone significant technical and organizational changes over the last two decades. The harvest mechanization process increased the work productivity and reduced drastically the workforce employed in the sector, requiring modern human resources practices to manage work in this new technical basis. The objective of this study is to analyse how the São Paulo state sugarcane complex human resources management (HRM) practices can increase the work intensity in agricultural production. The primary data of this study was obtained with a questionnaire applied to 38 HR managers of sugarcane companies and with 18 semi-structured interviews to the sector workers and managers. The payment based on production is a traditional HRM strategy in the sector to increase productivity, and its efficiency is conditioned to the capacity of the managers to recruit and control the workforce. Therefore, in this article, the analysis focused on payment, recruitment and training programmes. Data analysis indicate that, generally, the HRM practices logic is to reward workers with higher productivity levels and punish those who flee from behavior patterns and commit deviations of quality. Even so, the heterogeneity HRM structure in sugarcane agro-industry is evident, since companies with different types of management have specific priorities. The central conclusion is that the work intensification still can be an issue in sugarcane agro-industrial complex as the variable remuneration is used to punish and reward workers based on quality and productivity indicators. The effects of this intensification process for machine operators health must be analyzed in further researches.


2017 ◽  
Vol 41 (2) ◽  
pp. 344-350
Author(s):  
Beatriz N. Torrano-Silva ◽  
Carlos E. Amancio ◽  
Eurico C. Oliveira

Home and public sea aquaria are becoming more and more popular worldwide. Aquaria species are selected for their aesthetic appeal in terms of color, shape or behavior. In Brazil, most species are imported from remote places, usually tropical areas around the world. Water discarded from aquaria often includes organisms, or their propagula, that may become locally established. There have been extensive discussions concerning the vectors of species dispersion from their native areas, which includes ornamental aquaria. In order to evaluate the potential of local aquaria as a source of non native macro algae, we surveyed sea-aquaria shops and exhibition aquaria in São Paulo State. Thirty eight species of seaweeds were isolated in the aquaria surveyed. Among them, six have not been recorded from Brazil and nineteen were not reported for São Paulo littoral, including Caulerpa scalpelliformis var. denticulata the only species that so far deserves being designated as invasive in Brazil. The present paper should alert environmental agencies and aquaria shops about the risk of involuntarily introducing non-native species through aquariophyly.


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