scholarly journals An assessment of population fluctuations of a hemipteran citrus pest in the northeast of Algeria: A case study from Guelma region

2019 ◽  
Vol 113 (2) ◽  
pp. 289
Author(s):  
Omar KHALADI ◽  
Atika GUENDOUZ-BENRIMA
Keyword(s):  
Temporal Evolution ◽  
Aphis Gossypii ◽  
Abundant Species ◽  
The Other ◽  
Population Fluctuations ◽  
Aphis Spiraecola ◽  
Coccus Hesperidum ◽  
Dialeurodes Citri ◽  
Spatio Temporal

<p>In this study, which takes place in the northeast of Algeria at the region of Guelma between January 2016 and June 2017, we were able to follow the spatio-temporal evolution of the main hemipteran pests in an orchard of citrus (orange variety). This monitoring showed the presence of 12 hemipteran species, their appearance in the orchard is closely linked to the sap flow. The most abundant species was <em>Aleurothrixus floccosus</em>. The number of the other species that found was very small or absent in most of the time. We also noted that <em>Aonidiella aurantii</em> and <em>Chrysomphalus dictyospermi</em> had a preference to develop in the center of the tree while the other species found, which are: <em>Dialeurodes citri, Aphis gossypii</em>, <em>Aphis spiraecola</em>, <em>Lepidosaphes beckii, Parlatoria ziziphi, Saissetia olea, Coccus hesperidum</em>, <em>Coccus pseudomagnoliarum</em> and <em>Icerya purchasi</em>, were found in the sunniest parts of the tree.<br /><strong> </strong></p>

scholarly journals Spatial models for monitoring the spatio-temporal evolution of ashes after fire – a case study of a burnt grassland in Lithuania

Solid Earth ◽  
2013 ◽  
Vol 4 (1) ◽  
pp. 153-165 ◽  
Author(s):  
P. Pereira ◽  
A. Cerdà ◽  
X. Úbeda ◽  
J. Mataix-Solera ◽  
D. Martin ◽  
...  
Keyword(s):  
Temporal Evolution ◽  
Fire Severity ◽  
Spatial Models ◽  
Ground Cover ◽  
Variable Structure ◽  
Water Erosion ◽  
Ash Layer ◽  
Spatio Temporal ◽  
Thickness Measurements

Abstract. Ash thickness is a key variable in the protection of soil against erosion agents after planned and unplanned fires. Ash thickness measurements were conducted along two transects (flat and sloping areas) following a grided experimental design. In order to interpolate data with accuracy and identify the techniques with the least bias, several interpolation methods were tested in the grided plot. Overall, the fire had a low severity. However, the fire significantly reduced the ground cover, especially on sloping areas, owing to the higher fire severity and/or less biomass previous to the fire. Ash thickness depended on fire severity and was thin where fire severity was higher and thicker in lower fire severity sites. The ash thickness decreased with time after the fire. Between 4 and 16 days after the fire, ash was transported by wind. The greatest reduction took place between 16 and 34 days after the fire as a result of rainfall, and was more efficient where fire severity was higher. Between 34 and 45 days after the fire, no significant differences in ash thickness were identified among ash colours and only traces of the ash layer remained. The omni-directional experimental variograms showed that variable structure did not change significantly with time. The ash spatial variability increased with time, particularly on the slope, as a result of water erosion.

scholarly journals EDUCAÇÃO PROFISSIONAL: “o trabalho dignifica o homem?”

Revista Labor ◽  
2018 ◽  
Vol 2 (18) ◽  
pp. 236
Author(s):  
Juliana de Almeida Pereira e Santos
Keyword(s):  
Oral History ◽  
Integrated Curriculum ◽  
Qualitative Approach ◽  
The Other ◽  
Temporal Context ◽  
Integrative Education ◽  
Philosophical Foundations ◽  
Spatio Temporal ◽  
The One

Este artigo, excerto de um estudo maior de dissertação de Mestrado, propõe um paralelo entre os fundamentos epistemológicos e filosóficos que originam e sustentam a concepção de currículo integrado, como teoria pedagógica de base marxista, de um lado, e, de outro, os parâmetros organizacionais e pedagógicos que emergem da experiência de um curso Técnico em Enfermagem analisado, buscando apontamentos no que concerne a rupturas e a continuidades concernentes à educação omnilateral. Utilizou-se, para tanto, pesquisa de natureza básica, do tipo exploratória, com abordagem hipotético-dedutiva e enfoque qualitativo. No que tange ao procedimento, estudo de caso, a partir da técnica de história oral, na modalidade temática. As conclusões apontam que o caso analisado, embora não tenha atingido plenamente o desafio de educação integradora, dadas as disputas e os arranjos organizacionais em contrário, por apresentar ações e intenções integradoras, ainda que embrionárias e inconclusas, constituiu-se como proposta inabitual, em seu contexto espaçotemporal, o que evidencia seu mérito e relevância.AbstractThis article, an excerpt from a larger dissertation study, proposes a parallel between the epistemological and philosophical foundations that originate and sustain the conception of integrated curriculum, as pedagogical theory of Marxist base, on the one hand, and, on the other hand, the organizational and pedagogical parameters that emerge from the experience of a Technical Course in Nursing analyzed, looking for notes on the ruptures and continuities concerning omnilateral education. For this purpose, research of a basic nature, of the exploratory type, with hypothetical-deductive approach and qualitative approach was used. Regarding the procedure, a case study, based on the oral history technique, in the thematic modality. The conclusions pointed out that the case analyzed, although it did not fully reach the challenge of integrative education, given the disputes and the organizational arrangements to the contrary, for presenting actions and intentions integrating, although embryonic and inconclusive, was an unusual proposal, in its spatio-temporal context, which shows its merit and relevance.

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