scholarly journals SOIL VARIABILITY IN DIFFERENT LANDSCAPE POSITIONS IN THE PORTO ALEGRE BOTANICAL GARDEN, SOUTHERN BRAZIL

2015 ◽  
Vol 39 (5) ◽  
pp. 477-487 ◽  
Author(s):  
Luís Fernando da Silva ◽  
Paulo César do Nascimento ◽  
Alberto Vasconcellos Inda ◽  
Edsleine Ribeiro Silva
Keyword(s):  
Ph Value ◽  
Sustainable Use ◽  
Soil Formation ◽  
Soil Classification ◽  
Botanical Garden ◽  
Morphological Description ◽  
Southern Brazil ◽  
Porto Alegre ◽  
Reducing Environment ◽  
Pedogenic Processes

ABSTRACTKnowledge of soil characteristics in areas where activities related to the environment are developed, such as Porto Alegre Botanical Garden (JB-PoA), is a fundamental condition for the sustainable use of this natural resource. The objective of this study was to characterize, classify and evaluate some issues about soil formation in Porto Alegre Botanical Garden, as well as relate their distribution on the landscape according to environmental characteristics. For the morphological description and collecting samples four profiles were selected (P1 to P4), located in the summit-shoulder transition, backslope, footslope and toeslope, respectively. Granulometric distribution of the P1 and P3 profiles indicated sharp textural gradient, with presence of textural and "plânico" B horizons, respectively, according to Brazilian System of Soil Classification. There is predominance of low values of pH, and low base saturation, with exception of P4, indicating probable deposition of solution material at this area. The Fed/Fes relationship was greater in the profile located in the summit-shoulder transition (P1), indicating higher weathering. The Feo/Fed relationship increased in P3 and P4 profiles, indicating greater participation of iron oxides of low crystallinity in reducing environment. The occurrence of some pedogenic processes may be inferred, like lessivage in P1 (Ultic Hapludalf), due to clay skins and higher values of fine clay:total clay relationship in subsurface; ferrolysis and gleization, by low pH value and high Feo/Fed relationship in E and EB horizons of P3 (Oxyaquic Hapludalf), being the last also present in P4 (Humaqueptic Endoaquent), indicating gleization occurrence.

scholarly journals Species of Malva L. (Malvaceae) Cultivated in the Western of Santa Catarina State and Conformity With Species Marketed as Medicinal Plants in Southern Brazil

2019 ◽  
Vol 11 (15) ◽  
pp. 171 ◽  
Author(s):  
Leyza Paloschi de Oliveira ◽  
Massimo Giuseppe Bovini ◽  
Roseli Lopes da Costa Bortoluzzi ◽  
Mari Inês Carissimi Boff ◽  
Pedro Boff
Keyword(s):  
Medicinal Plants ◽  
Therapeutic Potential ◽  
Botanical Garden ◽  
Morphological Description ◽  
Southern Brazil ◽  
Santa Catarina ◽  
Plant Parts ◽  
Identification Chart ◽  
Sida Cordifolia ◽  
Santa Catarina State

The Malva genus presents different species with therapeutic potential and inadequate consumption can occur due to the incorrect identification of the plant in the market. The objective of this study was to identify species of the Malva genus cultivated in the Western Mesoregion of Santa Catarina State-Southern Brazil, and to verify the conformity of products’ labels marketed as dehydrated medicinal plants through the characteristics of the plant parts. The specimens were collected following an unsystematic procedure from households of ten municipalities. The material was identified with the help of specialized bibliography and a specialist. After, they were herborized and deposited in the herbaria of the State University of Santa Catarina (LUSC) and of the Botanical Garden Research Institute of Rio de Janeiro (RB). Five cultivated species of Malva were found (M. nicaeensis, M. parviflora, M. pseudolavatera, M. Sylvestris and M. verticillata). Whereas one species of the Geraniaceae family (Pelargonium graveolens) and three species of the Malvaceae family (Malva sylvestris, M. verticillata and Sida cordifolia) were found in the dehydrated packages. S. cordifolia species was present in 80% of the samples, with 65% of them marketed as M. sylvestris or under the common name of "mallow". Macroscopic images of the species and illustrations of the mericarps were made and an identification chart along with the morphological description for each species was elaborated based on the morphological results. Descriptions of labels for 60 samples were checked for the determination of the dehydrated Malva species marketed. Characteristics of parts of the plant in comparing them with the characteristics described in the specialized literature were performed. The target species of incorrect identifications in the analyzed packages was M. sylvestris.

Novelties in Persicaria (Polygonaceae): description of a narrowly endemic new species from southern Brazil, and typification of the name Polygonum minus

Phytotaxa ◽  
2021 ◽  
Vol 490 (1) ◽  
pp. 60-70
Author(s):  
LUÍS A. FUNEZ ◽  
GUSTAVO HASSEMER
Keyword(s):  
New Species ◽  
Morphological Description ◽  
Southern Brazil ◽  
Distribution Map ◽  
Morphological Comparison ◽  
Polygonum Minus ◽  
Narrow Area ◽  
Eurasian Species ◽  
A New Species ◽  
Locus Classicus

A new species of Persicaria, P. humboldtiana, endemic to a narrow area of waterfalls in Corupá, southern Brazil, is described in the present paper. The locus classicus of the new species is well-known for plant endemisms. A complete morphological description, original pictures, a distribution map, and a morphological comparison with the similar Eurasian species P. minor (≡ Polygonum minus) are given. The name Polygonum minus is lecto- and epitypified on, respectively, a Morison’s illustration and a specimen preserved at BM.

scholarly journals Appropriation and rationality in hip hop groups organization practices in Porto Alegre: an analysis on the perspective of Guerreiro Ramos

2010 ◽  
Vol 8 (2) ◽  
pp. 209-225
Author(s):  
Guilherme Dornelas Camara ◽  
Sueli Goulart ◽  
Rafaela Mendes Reinher
Keyword(s):  
Cultural Study ◽  
Social Action ◽  
Hip Hop ◽  
Organizational Practices ◽  
Southern Brazil ◽  
Cultural Artifacts ◽  
Porto Alegre ◽  
Foreign Experience ◽  
New Science ◽  
Economic Criteria

This paper discusses the organizational practices of hip hop groups from Porto Alegre, southern Brazil, as they appropriate foreign experience and rationally guide their social action. The aim of this work is to investigate these practices, based on the formulations of Brazilian sociologist Alberto Guerreiro Ramos, as they are enunciated in the works The Sociological Reduction and The New Science of Organizations. This approach offers fruitful material to broaden the theory and may be subsidiary to this kind of socio-cultural study, explaining why it is pertinent in this field. In this sense, the hip hop movement can be viewed as valuable when it comes to understanding phenomena which, due to (and in spite of) being originally transnational, or even "foreign", act or interact worldwide. Examining the organization practices and social action of these groups also helped identify a concern with the production of cultural artifacts that represent and form a symbolism that is historically and culturally located. Another issue that was broached concerns the market since for those groups it is not a category absent from their struggles and actions, but the economic criteria are incidental in relation to their members' motivation.

scholarly journals Classification of brown earths based on field and laboratory properties: Problematic issues and proposition of their solution

2019 ◽  
Vol 52 (2) ◽  
pp. 225
Author(s):  
Karolina Woźnica ◽  
Agnieszka Józefowska ◽  
Justyna Sokołowska ◽  
Ryszard Mazurek ◽  
Tomasz Zaleski
Keyword(s):  
Calcium Carbonate ◽  
Main Parameter ◽  
Ph Value ◽  
Soil Classification ◽  
Base Saturation ◽  
Carbonate Content ◽  
Field Guide ◽  
Content Determination

<p class="Default">In this paper, the current problems associated with the classification of brown earths, are presented. According to the Polish Soil Classification (PSC) (1989, 2011), base saturation is the main parameter for identifying eutrophic and dystrophic brown soils. In practice, however, it is not possible to determine the base saturation value in the field. Therefore, the aim of this study was to estimate the base saturation using a regression equation and create a field guide for brown earths, based on the pH value, measured using a Hellige indicator, and the calcium carbonate content. Determination of the pH ranges enabled the classification of brown earth types in the field. These results suggest that pH can be used as a proxy for base saturation especially in the field. A change in the hierarchy of soil (sub)types is proposed for the new Polish Soil Classification.</p>

scholarly journals Barriers for HIV testing during pregnancy in Southern Brazil

2006 ◽  
Vol 40 (2) ◽  
pp. 220-225 ◽  
Author(s):  
Humberto Rosa ◽  
Marcelo Zubaran Goldani ◽  
Thomas Scanlon ◽  
Antônio Augusto Moura da Silva ◽  
Elsa Justo Giugliani ◽  
...  
Keyword(s):  
Private Sector ◽  
Hiv Testing ◽  
Cross Sectional Study ◽  
Southern Brazil ◽  
Porto Alegre ◽  
Cross Sectional ◽  
Logistic Regression Models ◽  
The Public ◽  
Maternal Schooling ◽  
New Strategies

OBJECTIVE: To assess HIV testing rate and determine risk factors for not have been tested during pregnancy. METHODS: A cross-sectional study was carried out in Porto Alegre, Southern Brazil, from December 2000 to February 2001. Socioeconomic, maternal and healthcare variables were obtained by means of a standardized questionnaire. Crude and adjusted odds ratios and their 95% confidence intervals were obtained in logistic regression models. RESULTS: A total of 1,642 mothers were interviewed. Of them, 94.3% reported being offered HIV testing before or during pregnancy or during labor; 89 mothers (5.4%) were not tested or did not know if they were tested. Attending fewer than six prenatal visits, being single and younger than 18 years old were relevant barriers preventing HIV testing. There was found a relationship between maternal schooling and the category of prenatal care provider. Having low 22.20 (12.43-39.67) or high 3.38 (1.86-7.68). schooling and being cared in the private sector strongly reduced the likelihood of being HIV tested. CONCLUSIONS: The Brazilian Health Ministry's recommendation for universal counseling and HIV testing has been successfully implemented in the public sector. In order to improve HIV testing coverage, new strategies need to target women cared in the private sector especially those of low schooling.

Evaluation of Suitability of Red Clay from Selected Areas of Gercus Formation, Sulaimaniyah, North Iraq, for the Construction of Embankment Dams

2021 ◽  
pp. 3417-3427
Author(s):  
Amera I. Hussain Hussain ◽  
Ibraheem I. Ibraheem
Keyword(s):  
Ph Value ◽  
Soil Classification ◽  
Liquid Limit ◽  
Dry Density ◽  
Maximum Dry Density ◽  
Red Clay ◽  
Embankment Dams ◽  
Filling Materials ◽  
The North ◽  
Geotechnical Assessment

      In this research, a geotechnical assessment was conducted for clay of the Gercus Formation to determine its suitability for embankment dams. The selected area is located in the north of Iraq. Six samples were collected from two sites in Dokan (Sulaimaniyah) and Haibat Sultan mountain (Koysinjaq), three samples each. Various geotechnical (physical, mechanical and chemical) tests were conducted based on standard specifications.      The results of the grain size test of clay samples showed their conformity with Zone C curves and their suitability for the construction of embankment dams, according to the Iraqi standard for roads and bridges.  The results of the plasticity limits test showed that the soil is made of fine, low plasticity silt (ML), and low plasticity clay (CL), according to the unified standard soil classification. The water content and plasticity limit tests (liquid limit, plastic limit, and plasticity index) demonstrated that these clays are conformable with the limits of the Iraqi standards. The results of the modified compaction test found a maximum dry density value of 1.962 g/cm3 with an optimum moisture content of 11.5%. The results of the permeability index (K) revealed low permeability according to the Das classification and, therefore, showed the suitability of the samples as raw filling materials in the construction of dams. Chemical tests (sulfate content, organic materials content, total dissolved salts, gypsum content, and pH value) showed compatibility with the requirements for the use in dams construction under the Iraqi standard (SoRB/ R5).

Taxonomic revision and morphological delimitation of Oxalis sect. Ripariae (Oxalidaceae)

Phytotaxa ◽  
2021 ◽  
Vol 529 (1) ◽  
pp. 125-159
Author(s):  
ANELISE NUERNBERG-SILVA ◽  
PEDRO FIASCHI
Keyword(s):  
Conservation Status ◽  
Taxonomic Revision ◽  
Second Step ◽  
Morphological Description ◽  
South American ◽  
Southern Brazil ◽  
Distribution Map ◽  
Phylogenetic Studies ◽  
A New Species ◽  
Near Threatened

Phylogenetic studies indicate that several infrageneric taxa in Oxalis require taxonomic updates to attain monophyly. In this contribution, we update the morphological delimitation of the South American Oxalis sect. Ripariae and provide a taxonomic revision of the currently accepted species. The sectional delimitation was carried out by comparing micro- and macromorphological features of Oxalis sect. Ripariae, O. sect. Corniculatae, and O. sect. Myriophyllum. These sections share yellow flowers and aerial stems. Glandular hairs and larger seeds with the surface longitudinally crested and with projections are exclusive to Oxalis sect. Ripariae. We accept 11 species in the section, including three previously placed in Oxalis sect. Corniculatae (i.e., O. eriocarpa, O. niederleinii, and O. refracta), but excluding O. serpens and O. subvillosa, which are moved to O. sect. Corniculatae. We also describe a new species (Oxalis lourteiginana), propose a new name and status for O. bifrons subsp. littoralis (now O. pampeana), the synonymization of O. irreperta with O. riparia, six second-step lectotypifications, and one epitypification. For each accepted species we provide a morphological description, illustrations, ecological and taxonomic information, conservation status following IUCN, and a geographic distribution map. Most species occur in southern Brazil, but the section is widespread also in Argentina, Uruguay, and eastern Paraguay. Six species are categorized as threatened and further three as near threatened. Besides, we provide an identification key for the taxa of the section.

Soil mineralogy and dynamic pedogenic processes in response to redox cycles due to rice and sweet potato rotation

Soil Research ◽  
2020 ◽  
Vol 58 (2) ◽  
pp. 174
Author(s):  
Markus Anda ◽  
Erna Suryani ◽  
Dedi Nursyamsi
Keyword(s):  
Sweet Potato ◽  
Clay Fraction ◽  
Soil Classification ◽  
Middle Part ◽  
Soil Profiles ◽  
Mineral Contents ◽  
Redox Cycles ◽  
Potato Rotation ◽  
Pedogenic Processes

Effect of long-term wet and dry (redox) cycles attributed to seasonally flooded soils in rotation of rice and upland food crops on soil characteristics is not yet available in modern agriculture. The objective of this study was to assess soil morphological features, mineralogical compositions and dynamic pedogenic processes under rotation of rice and honey-taste sweet potato. Four profiles that experienced redox cycles and one that did not (as a control) were sampled for soil analyses. Results showed that all soil profiles, irrespective of redox cycles, derived from similar parent materials as revealed by the same type of weatherable mineral contents (hornblende, labradorite, hypersthene, and olivine or muscovite), ranging within 27–84%. High proportions of easily weatherable minerals corresponded to the high availability of Ca, Mg, Si, Fe, Mn and Cu nutrients, suggesting the release of nutrient reserves from weatherable minerals. In all soils, the clay fraction contained only the one mineral, halloysite. Long-term redox cycles due to rotation of rice–honey-taste sweet potato resulted in a remarkable pedomorphic feature, i.e. discrete large soft black Mn segregation with the highest accumulation in the middle part of soil profiles. Other pedogenic processes were Ca, Mg, and Si translocation from the upper to lower layers of soil profiles, but Fe was retained in the uppermost two horizons. We proposed a new soil classification ‘Manganic Eutrudept’ as a subgroup category to accommodate the soil property of high soft Mn segregation.

Rediscovery of the holotype of Ditaxodon taeniatus (Peters in Hensel, 1868) (Serpentes: Colubridae) and invalidation of the neotype designation

Zootaxa ◽  
2008 ◽  
Vol 1764 (1) ◽  
pp. 66 ◽  
Author(s):  
RENATO S. BÉRNILS ◽  
CHRISTOPH KUCHARZEWSKI ◽  
JULIO CESAR DE MOURA-LEITE ◽  
AXEL KWET
Keyword(s):  
New Genus ◽  
Rio Grande ◽  
Zoological Nomenclature ◽  
International Code ◽  
Single Specimen ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Porto Alegre

Ditaxodon taeniatus is a striped, racer-like colubrid snake inhabiting grassland savannas in southern Brazil. This species was described as Philodryas taeniatus by the then curator of the Museum für Naturkunde der Humboldt-Universität zu Berlin (formerly Zoologisches Museum Berlin, ZMB), Wilhelm Peters, from a single specimen collected by Reinhold Hensel in Porto Alegre, Rio Grande do Sul. Peters’ description was published in a paper by Hensel (1868: 331) and, according to the International Code of Zoological Nomenclature (ICZN, 1999: Article 50.1, Recommendation 51E), the correct citation is Ditaxodon taeniatus (Peters in Hensel, 1868). Later, George A. Boulenger (1896: 124) transferred Philodryas taeniatus to the genus Conophis, and Alphonse R. Hoge (1958: 54) created for it the new genus Ditaxodon, which remains monotypic today.

Changing Patterns of HIV-1 Transmission in Southern Brazil 1985–1991

1994 ◽  
Vol 5 (3) ◽  
pp. 202-206
Author(s):  
Breno R Santos ◽  
Eduard J Beck ◽  
Mario F Peixoto ◽  
Valerie Kitchen ◽  
Jonathan Weber
Keyword(s):  
Risk Factors ◽  
Hiv Transmission ◽  
Southern Brazil ◽  
Porto Alegre ◽  
Infected Female ◽  
Symptomatic Disease ◽  
Heterosexual Women ◽  
Changing Patterns ◽  
Low Prevalence ◽  
Hiv 1

In order to describe the changing patterns of risk factors for HIV-1 transmission of patients using hospital services at an AIDS referral centre in Porto Alegre, southern Brazil, data on demographic characteristics, referral patterns and risk factors at time of first presentation were collected prospectively on 405 patients between October 1985 and September 1991. Overall HIV-related patient workload increased during the study period, as did the proportion of infected female patients seen ( P < 0.05). Of all patients, 147 (36%) presented with symptomatic HIV disease and 77 (19%) presented with an AIDS defining condition; men were more likely to present with symptomatic disease than women. Approximately 156 (44%) of men were self-referred compared with 4 (8%) of the women ( P < 0.0001). Of the 357 infected men, 82 (23%) were bisexuals; of the 26 heterosexually infected women, 7 (24%) had bisexual male partners. These data suggest the increasing importance of heterosexual HIV transmission in this hitherto ‘low’ prevalence area, with male bisexuals constituting an important route through which heterosexual females are being infected in this area. The data also suggest that heterosexual women in Southern Brazil do not perceive themselves to be at risk for HIV-1 infection.

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