1,354,379 research outputs found
The tadpole of Pleurodema cordobae Valetti, Salas & Martino, 2009 (Anura: Leiuperidae) from Córdoba, Argentina
No full textThe frog genus Pleurodema Tschudi, 1838 is distributed from Panama throughout South America to southern Chile and Argentina and currently is represented by 15 species, of which 10 have been recorded in Argentina (Faivovich et al. 2012). Recently, Valetti et al. (2009) re-described the tetraploid species P. kriegi and described a related cryptic species, the octoploid Pleurodema cordobae. These species are endemic of the Sierra Grande of Córdoba (Ferraro & Casagranda 2009; Valetti et al. 2009; Valetti et al. 2011) and together with the tetraploid P. bibrioni comprise a clade of polyploid cryptic species within the genus (Faivovich et al. 2012). The external morphology has been described for the tadpoles of P. bibrioni and P. kriegi by Kolenc et al. (2009), but the tadpole of P. cordobae remains undescribed. The aim of this work is to describe the larval external morphology and oral disc of new species P. cordobae.Fil: Otero, Manuel Alejandro. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquimicas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Grenat, Pablo Raúl. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquimicas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Valetti, Julian Alonso. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquimicas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Salas, Nancy Edith. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquimicas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Martino, Adolfo Ludovico. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquimicas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
Cultural landscape: Towards the design of a nocturnal lightscape
No full textThe current debate on the cultural landscape is focused on an inclusive definition. It proposes active enhancement practices and local planning tools that are also dedicated to the study of scenic-perceptive components and visual values. However, the current indications are limited to the definition of day images of sites, and are not based on investigations of the corresponding nocturnal images. The legislation and the recommendations in force in the field of lighting supply performance requirements, related to street and urban lighting, do not provide any indications regarding territorial contexts or widespread heritage sites. This paper presents a critical analysis of the lighting condition of different territorial contexts, places of widespread heritage, in particular with reference to the Italian context. The present situation has been investigated through a qualitative analysis, based on a comparison between day and night images, and a quantitative analysis, developed through a measurement campaign on representative case studies of the recurrent territorial context. In most cases, an absence of a specific lighting design strategy, aimed at defining a suitable nocturnal perception of the cultural landscape, has emerged from the collected data. The aim of the work has been to underline the importance of the study of nocturnal images and to show the possibility of developing an analysis and design methodology for these contexts. This approach should be based on a systemic vision, which should allow not only single monuments to be valorised, but also the places and landscapes that characterise a territory from a morphological and cultural point of view
ANALYSIS AND DESIGN APPROACH FOR A NOCTURNAL IMAGE OF THE CULTURAL LANDSCAPE
No full textThe current debate on the cultural landscape proposes active enhancement practices and local planning tools that are also dedicated to the study of scenic-perceptive components and visual values. However, the current indications are limited to the definition of day images of sites and are not based on investigations of the corresponding nocturnal images of the widespread heritage. The study presented in this paper is aimed at underlining the importance of the analysis of nocturnal images and at defining design tips and guidelines for the definition of the nocturnal landscape image. The proposal of design guidelines will result from the assessment of the current nightscape. The aim of the paper is to present the methodological approach that has been conceived to address the analysis of the current nocturnal landscape image, carried out through both qualitative and quantitative analysis. In the paper results obtained from the application of the method to a case study are presented
Pleurodema cordobae Valetti, Salas & Martino, 2009, sp. nov.
No full textPleurodema cordobae sp. nov. Fig. 10 Material. Holotype. FML 20490, adult male (Fig. 11) from Estancia Los Tabaquillos (32 º 23 ' 58.4 '' S, 64 º 55 ' 35.1 '' W, approximately 2105 m elevation), Sierra de Comechingones, Córdoba province, Argentina (Fig. 1), collected during the night of 0 5 February 2006 by Adolfo L. Martino and Julián A. Valetti. Paratypes (9 specimens). FML 20492, adult female and FML 20484 –20489, 20491, eight adult males, all collected with the holotype. Diagnosis. A small species of Pleurodema (35.41 mm SVL) with lumbar glands and chromosomic complement octoploid. The new species is distinguished from other species of the genus Pleurodema by the following combination of characters: (1) relatively small size; (2) snout short, canthus rostralis rounded in dorsal view and truncate in lateral view; (3) lumbar glands present, 1 ½ eye diameter; (4) round tympanic annulus, almost concealed; (5) tympanum length half of the eye diameter; (6) vomerine teeth absent, (7) comissural gland prominent; (8) brilliant red-orange spots on the groin and around lumbar glands; (9) ploid level 2 n= 8 x = 88; (10) axillary amplexus; (11) egg deposition in gelatinous nest attached to vegetation; (12) compound advertisement call with tri-pulsed pulse groups, average dominant frequency 1787 Hz. According to external morphology, Pleurodema kriegi, Pleurodema bibroni and Pleurodema cordobae sp. nov. are cryptic and the properties of their advertisement calls are very similar. Pleurodema cordobae sp. nov. is the only octoploid species of the genus (P. k r i e g i and P. bibroni are tetraploid and the rest of species are diploid; Brum-Zorrilla & Sáez, 1968; Barrio & Rinaldi de Chieri, 1970; Veloso et al., 1972; Duellman & Veloso, 1977; Schmid et al., 1993; Lourenço et al., 2006). Morphometric comparisons indicate differences between Pleurodema cordobae sp. nov. and P. k r i e g i (Table 1). However, there are no morphometric measures that allow a precise identification between both taxa. The temporal variables of the advertisement call differ from P. k r i e g i (Table 2) and the pulse rate is higher than P. k r i e g i. The erythrocyte size of Pleurodema cordobae sp. nov. is significantly bigger than P. k r i e g i (Table 4) near 100 µm 2. Pleurodema cordobae sp. nov. is distinguished markedly from P. tucumanum, P. nebulosum, P. guayapae, P. marmoratum and P. diplolister by the presence of lumbar glands; from P. bufoninum, P. borellii, P. cinereum and P. thaul by the presence of advertisement call compound by tri-pulsed pulse groups (absent in P. bufoninum, Duellman & Veloso 1977; formed by a single pulse group in P. borellii and P. cinereum, McLister et al. 1991; and formed by pulse groups of 5-6 pulses in P. thaul, Barrio, 1977); from P. brachyops by having lumbar glands bigger than eye diameter (smaller in P. brachyops), yellow lumbar glands with black central ocellus (black lumbar glands with whitish central blotchs in P. brachyops), tympanum size half of the eye diameter (smaller than half eye diameter in P. brachyops). Sixteen morphometric distances of the type series describe the quantitative morphological features of the new species (Table 5). Description of the holotype. The holotype (FML 20490, Fig. 11) is an adult male of 35.2 mm (Table 5), body robust; head triangular slightly wider than long; snout short, canthus rostralis rounded in dorsal view and truncated in lateral view. Eyes protuberant; eye diameter equal to interocular distance; interocular distance larger than internarinal interval. Round tympanic annulus almost concealed, approximately half the size of eye diameter. Commissural glands present, oval, approximately the same size of eye diameter. Vomerine teeth absent. Dark vocal sac. Fingers free; relative length of fingers: 3> 4> 1> 2; two not-darkened palmar tubercles (Fig. 11). Femur length less than tibia length; sum of femur length and tibia length longer than foot length. Toes free with cutaneous edge and rudimentary interdigital basal membrane; two metatarsal tubercles (Fig. 11); relative length of toes: 4> 5 = 3> 2> 1. Lumbar glands large, oval, one and a half times the size of eye diameter. Vocal sacs single, median and subgular. In life, dorsally brownish with large almost symmetrical dark spots. Dark transverse bands on upper surface of arms and legs. Yellow lumbar glands with a black central ocellus covering 60 % of the gland. Brilliant red-orange spots on the groin and around lumbar glands. Dark palms and soles, with whitish palmar tubercles. Dark vocal sac, with the rest of ventral body surface being whitish and mild dotted dark. Iris gold with black reticulations. TABLE 5. Morphometric features of the type series of Pleurodema cordobae sp. nov. which were collected at Est. Los Tabaquillos, Córdoba. All data are given in [mm]. (1) snout-vent length (SVL); (2) maximal head width; (3) head length; (4) snout-eye distance; (5) internarinal distance; (6) interocular distance; (7) eye-narinal distance; (8) rostronarinal distance; (9) eye diameter; (10) arm length; (11) length of 3 rd finger; (12) femur length; (13) tibia length; (14) foot length; (15) length of 3 rd toe; (16) length of 4 th toe. FML = Fundación Miguel Lillo, Tucumán, Argentina. M= male; F= female. Distribution. The species is currently known from Terra typica, Estancia Los Tabaquillos (Fig. 1) and two temporary ponds located 5 kilometers away from the former. Ecology. Pleurodema cordobae sp. nov. males were acoustically active from December to March (Austral summer) from 21.00 hs. to 4.00 hr. (sunset time: 21.00 – 21.30 hr) Pleurodema cordobae breeds in temporary and semipermanent ponds with vegetation at the edges and a depth of 20 to 30 cm (Fig. 12). The males emit their calls floating on the surface of the water near the edge of ponds (Fig. 13). The eggs are deposited in semisubmerged eggs-masses and adhered to the vegetation (Fig. 14). The amplexus is axillary. This species was observed in syntopy with Rhinella achalensis, R. arenarum, Odontophrynus achalensis and Hypsiboas cordobae. Etymology. The specific name (a noun in the genitive case) refers to the currently known geographical distribution of the new species.Published as part of Valetti, Julián A., Salas, Nancy E. & Martino, Adolfo L., 2009, A new polyploid species of Pleurodema (Anura: Leiuperidae) from Sierra de Comechingones, Córdoba, Argentina and redescription of Pleurodema kriegi (Müller, 1926), pp. 1-21 in Zootaxa 2073 on pages 13-18, DOI: 10.5281/zenodo.18713
Un progetto di luce tra conoscenza e valorizzazione: il quartiere EUR di Roma
No full textThe enhancement of historical contexts is nowadays a prominent theme in the cultural and architectural landscape. Besides the requalification of spaces, it is also relevant the nighttime image of the city. The light selects, amplifies, defines hierarchies and an artificial lighting project can fit into a wide sense of enhancement, becoming a tool for designing the night appearance of the urban landscape. The theme has been investigated through the analysis of a case study: the EUR district in Rome. By following a structured path of interdisciplinary knowledge, that involved the study of the historical stages of evolution of the urban fabric, was drawn up a lighting project. The neighborhood has many critical issues, summarized in the insuficent enhancement of the site. In this perspective, the project proposal arises as a solution that can bind together the disjointed fragments that now make up the area, enhancing it, and recreating a complex urban system, livable and enjoyable by a larger type of users
Diferencias en la habilidad patogénica de aislamientos de A. rabiei proveniente de campos Cordobeses de garbanzo.
No full textPosterEn la provincia de Córdoba, el cultivo de garbanzo ha alcanzado un promedio de 87 400 tn y 50 900 Has entre las campañas 2015 2019 aportando ingresos a la economía provincial de 75 millones de dólares/año Entre las principales adversidades sanitarias se encuentra la “Rabia del garbanzo".Instituto de Patología VegetalFil: Crociara, Clara Sonia. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Fitopatología y Modelización Agrícola (UFyMA); ArgentinaFil: Crociara, Clara Sonia. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: Valetti, Lucio. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: Valetti, Lucio. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Fitopatología y Modelización Agrícola (UFyMA); ArgentinaFil: Pastor, Silvina Estela. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: Pastor, Silvina Estela. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Fitopatología y Modelización Agrícola (UFyMA); Argentin
A Novel Approach for the Assessment of the Nocturnal Image of the Cultural Landscape
No full textPolicies aimed at urban and territorial development stressed the importance of landscape as a significant resource for sustainable and economic development. In this perspective, research on landscape visual values and people preferences can support the enhancement of the global values of territories. Currently, the theoretical framework and approaches are mainly limited to the day images of sites, while nighttime landscape is not usually considered. In this study, we defined a methodological approach to address the analysis of the nocturnal image of cultural landscape contexts, in order to define indications and support the inclusion of visual values in the process of public lighting design. The approach was conceived for territorial contexts characterized by the presence of small urban settlements located in prominent positions and involved a subjective survey, an in-field measurement campaign, and statistical analysis to identify significant correlations between subjective judgments and quantitative parameters. The effectiveness of the approach was assessed through the application to a case study. The study allowed identifying subjective factors (overall impact, architecture and historicity, correspondence, alteration) and objective parameters (ratios of regions’ area, luminance values, and luminance contrasts) which describe the nightscape of cultural landscape. Results demonstrated the presence of significant correlation between subjective factors and objective parameters. The application of the method could provide designers and planners indications useful for the design of outdoor lighting system, in order to include perceptual aspects in a holistic design approach, which promotes environmental, energy, economic, and cultural sustainability
LONG-TERM MONITORING CAMPAIGN OF LED STREET LIGHTING SYSTEMS: FOCUS ON THE ENERGY AND PHOTOMETRIC PERFORMANCES
No full textThe renovation of public lighting installations by replacing the traditional systems with LED technologies and introducing smart lighting control systems is a policy widely adopted to contain energy consumption and expenditure. Additionally, the long-term monitoring of the depreciation of the new lighting systems is a crucial issue. The aim of this study is to report the results of in-field measurements of new LED lighting systems in the city of Turin (Italy). A method was defined to assess: (i) energy performance (through data from the remote-control system); (ii) photometric performance (through in-field measurement campaigns); and (iii) depreciation of the photometric performance over a period of approximately 5 years. Results demonstrated that the new LED systems allow us to achieve an average energy saving of 51% compared to the ex-ante condition, improving the photometric performances and compiling the standard requirements by lowering the over-illumination levels. Moreover, the measured depreciation of the LED systems over time was
compared with the predicted depreciation, estimated based on the calculation method proposed in Standards BS 5489-1:2020 and ISO/CIE TS 2012:2019. The results obtained showed that the measured depreciation of the photometric performance was closer to the predicted depreciation trend
according to BS 5489-1:2020 (variations between 0% and 4%), while greater variations (between 17% and 23%) emerged considering the ISO/CIE TS 22012:2019
FIGURE 1 in A new polyploid species of Pleurodema (Anura: Leiuperidae) from Sierra de Comechingones, Córdoba, Argentina and redescription of Pleurodema kriegi (Müller, 1926)
No full textFIGURE 1. Geographic position of type locality of Pleurodema sp. nov. (Estancia Los Tabaquillos; asterisk) and locality of specimens of Pleurodema kriegi used in the redescription (La Posta, Pampa de Achala; circle).Published as part of Valetti, Julián A., Salas, Nancy E. & Martino, Adolfo L., 2009, A new polyploid species of Pleurodema (Anura: Leiuperidae) from Sierra de Comechingones, Córdoba, Argentina and redescription of Pleurodema kriegi (Müller, 1926), pp. 1-21 in Zootaxa 2073 on page 3, DOI: 10.5281/zenodo.18713
Renovation of Public Lighting Systems in Cultural Landscapes: Lighting and Energy Performance and Their Impact on Nightscapes
No full textThe technological innovation in the field of lighting and the need to reduce energy consumption connected to public lighting are leading many municipalities to undertake the renewal of public lighting systems, by replacing the existing luminaires with LED technologies. This renovation process is usually aimed at increasing energy efficiency and reducing maintenance costs, whist improving the lighting performance. To achieve these results, the new luminaires are often characterised by a luminous flux distribution much more downward oriented, which may remarkably influence and alter the perception of the night image of the sites. In this study the implications of the renovation of public lighting systems in terms of lighting and energy performance as well as the effects relating to the alteration of the night image, in historical contexts characterized by significant landscape value, are analysed. Results, along with demonstrating the positive effect that more sustainable and energy efficient lighting systems may have on the lighting performance and energy consumptions of public lighting systems, evidences the impact they may have on the alteration of the nocturnal image
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