Kelly Geronazzo Martins

Multiplication of juvenile black wattle by microcuttings

The influence of mineral formulation, growth regulators and activated charcoal on micropropagation of juvenile black wattle (Acacia mearnsii) was studied. Nodal segments of one-month-old seedlings were used as starting material. After 30 to 45 days, they developed into shoots, which were divided into microcuttings and transferred to fresh media. The addition of 2 g l−1 of activated charcoal to basal medium (3/4 strength MS salts and MS vitamins) improved the multiplication phase, reducing leaf chlorosis and raising the percentage of elongated shoots. The multiplication rate varied between 1.7 and 3 every month. Rooting percentage too was higher in the presence of charcoal, even when auxin was not added to the culture medium. The addition of 8.87 μM of benzyladenine and/or 1.44 or 2.88 μM of gibberellic acid did not influence significantly the multiplication, nor modifications in the FeSO4, MnSO4, CaCl2 content of the medium. The system described allows the multiplication, elongation and rooting of black wattle in one step.

Dissolved Air Flotation for Fiber Removal from Clear Water

We investigated the use of dissolved air flotation (DAF) to treat clear water effluent from the paper industry in order to remove fibers. The dosage of polyaluminium chloride (PAC) was varied in the following concentrations: 0, 75, 100, 125, 150 and 175 mg/L; as well as bubble rise velocity of 18 and 9 cm/min for two types of paper wastewater: print and gloss. Data were statistically analyzed through factorial arrangement 6x2x2. The treatment of the print paper effluent showed better performance in removing the analyzed parameters with an optimal dosage of 100 mg/L PAC, whereas the gloss paper effluent treatment had satisfactory removal of analyzed parameters with an optimal dosage of 150 mg/L of PAC. This led to the observation that the high efficiency directly obtained with the DAF in conjunction with the use of PAC coagulant was an excellent primary treatment option for effluent resulting from the paper industry.

Análise da Influência do Uso da Terra no Microclima Urbano: Caso Irati-PR

The reduction of urban green areas and consequent increase of the built areas is one of the most widely discussed topics nowadays. Both the urban land use dynamics and the climate changes may prove relationships between different uses and land occupations and their consequences for the local microclimate. This paper presents an assessment of the land use influence in the urban climate in a small town. A total of 4 points covering the urban perimeter of Irati, Parana, with different occupations were selected and temperature and humidity variables obtained with use of adapted hygrometers in thermometric shelter in 4 different times for 4 days. The use of high resolution satellite images enabled the mapping of urban land use in catchment areas within a radius of 350 meters of pre-selected points. The results statistically showed that the use and occupation of land interfere with the climate variables obtained.

Análise da Influência do Uso da Terra no Microclima Urbano: Caso Irati-PR / Analysis of Land Use Influence in Urban Microclimate: Irati-PR Case

The reduction of urban green areas and consequent increase of the built areas is one of the most widely discussed topics nowadays. Both the urban land use dynamics and the climate changes may prove relationships between different uses and land occupations and their consequences for the local microclimate. This paper presents an assessment of the land use influence in the urban climate in a small town. A total of 4 points covering the urban perimeter of Irati, Parana, with different occupations were selected and temperature and humidity variables obtained with use of adapted hygrometers in thermometric shelter in 4 different times for 4 days. The use of high resolution satellite images enabled the mapping of urban land use in catchment areas within a radius of 350 meters of pre-selected points. The results statistically showed that the use and occupation of land interfere with the climate variables obtained.

Avifauna em Quatro Fazendas Madeireiras de Irati-PR: Análise para Certificação Florestal / Avifauna in Four Timber Farms in Irati, Paraná State: Analysis for Forest Certification

This study compared the community and diversity of birds in Mixed Ombrophylous Forest fragments of different sizes. To this end, eight fragments divided into sets forming two classes (from 20 to 70 ha and 100 to 420 ha) were selected in four farms in Guamirim district, municipality of Irati, Parana state. The sampling method consisted of irregular transects traversed by natural areas. The experiment was conducted between 2009 and 2010, always in spring and autumn. Relative Frequency and Diversity were calculated by the Shannon index. The analyses Multiple Response Permutation Procedure (MRPP), Cluster, and Mann-Whitney (Wilcoxon) W test were used to compare the fragments. The results show that larger fragments present a distinct and more diverse community than patches smaller than 100 ha. Using irregular transects, we recorded 88 species of the total of 123 species recorded on site in transects and eventual observations.

MULTITEMPORAL ANALYSIS OF THE LAND USE AND LAND COVER OF THE ALAGADOS WATER SOURCE AND ITS SURROUNDING AREA IN PONTA GROSSA-PR

This study aimed the multitemporal analysis of land use and coverage of the water supply, Alagados and its surroundings (1 km range) in Ponta Grossa city over ten years (from 2001 to 2011). Especially attention was laid on the marginal areas (100 m range) of the permanentpreservation areas (PPA). As the major water suply source of Ponta Grossa city, deterioration of water quality of Alagados is threatened bythe misuse and disorderly occupation of its surroundings .We used satellite images of medium spatial resolution (30 meters) and the objectoriented image method preceded by the image segmentation as the classification techniques. The results showed that there was a significantreduction in the surface of the water surface in 13.43% (88.15 ha) in the period 2001 to 2011, which shows a high sedimentation processoccurred in certain areas of the reservoir. Changes were also detected in the PPA range domain (100 meters) surrounding the reservoir,confirming a degradation process due mainly to the increase buildings occupations and agricultural practices.