Sílvio Luís Rafaeli Neto

Comportamento espacial de variáveis agronômicas da maçã 'Fuji' durante dois anos de observações no planalto serrano de Santa Catarina

The precision agriculture (AP) provide useful tool for evaluation agricultural risk in fruitculture and rational programming of its practical. The objective of this work was to evaluate spatial behavior of weight of fruits for plant (PP), number of fruits for plant (NF) and average weight of fruits for plant (PMF) in two years in the harvest of 2004 and 2005. The Fuji cultivar was selected in a commercial orchard in the city of Sao Joaquim - SC, Brazil. The data were imported to the Geographic Information System - GIS SPRING, where it was made a kriging to construct maps of spatial variability. In the harvest of 2005 there was a period of time with dry climate that they had influenced on the production. It had a reduction in the average values of PP and MF in relation to the previous year, but the PMF presented an addition. The geostatistics analysis made possible modeling the spatial behavior of the variables at the experimental area. The used GIS revealed satisfactory for the effected analyses.

Eficácia da arquitetura MLP em modo closed-loop para simulação de um Sistema Hidrológico

Estimatives of hydrological responses are needed for the watershed planning. The aim of this study was to evaluate the hydrological behavior simulation of the Upper Canoas basin using artificial neural networks Multi Layer Perceptron (MLP) method, as well as to analyze the contribution of the input variables for modeling. It were tested 12 treatments with combinations of variables such as precipitation, evapotranspiration (ET0) and discharge, as well as transformations and temporal displacements of these variables, in order to determine the variables that promoted the better performance on discharge modeling. The MLP was trained in open-loop mode using part of the observed discharges. The discharges for the whole series were simulated in closed-loop, using the discharge simulated on the previous time step as input. The learning algorithm used was the Levenberg-Marquardt. The treatment with the best performance (NS = 0.9119, RMS = 14.29 m3/s) employed the daily precipitation of the four rainfall stations (Urubici, Vila Canoas, Lomba Alta e Anitapolis), precipitation of the four stations with -2 days of response time, and simulated discharge from the previous day. Despite the low RMS, the modeled discharge using MLP was generally overestimated.

INTEGRAÇÃO DE DADOS GEOAMBIENTAIS NO ESTUDO DA DISTRIBUIÇÃO ESPACIAL DE SOLOS COM TÉCNICAS DE GEOPROCESSAMENT

POLLINATOR FORAGING STRATEGY IN Galactia peduncularis (BENTH.) TAUB. (LEGUMINOSAE: PAPILIONOIDEA) IN THE PARQUE ESTADUAL DA SERRA DE CALDAS NOVAS BRAZIL The way the animals look for food is an important characteristic of their behavior. The optimal foraging theory is based on the existence of a balance between costs and benefits of these behavioral decisions. The present study aimed to evaluate the behavior of the pollinator in response to increased availability of floral resources. The experiment was conducted in a recently burned Cerrado area (Campo rupestre) in the State Park of Serra de Caldas Novas , located in the municipalities of Caldas Novas and Rio Quente Brazil. The species chosen to test our hypothesis was Galactia peduncularis (Benth.) Taub. (Leguminosae: Papilionoidea). 17 pairs of specimens were selected with a number of flowers, and the individuals of each pair were spaced by about 2m. In these pairs, one of them was considered the focal, and the other, the isolated. To test possible differences in pollination between isolated plants and focus, we performed two randomization tests: a test binary (TB), where all pairs were analyzed and verified the number of times where the focus on the individual floral visits were higher than the number of visits in isolated. According to the data analyzed, floral visitors preferred to use plants that could provide a greater amount of floral resources so that the number of visitors varied positively with the increment of flowers. Plants with many flowers can provide a greater amount of food in one location so that visitors do not need to flower around for long distances in search of meeting their energy needs.

ATRIBUTOS QUALI-QUANTITATIVOS GEO-AMBIENTAIS DA REGIÃO DO CAMPO DOS PADRES (ALTO CANOAS) – SC OBTIDOS COM TÉCNICAS DE GEOPROCESSAMENTO

POLLINATOR FORAGING STRATEGY IN Galactia peduncularis (BENTH.) TAUB. (LEGUMINOSAE: PAPILIONOIDEA) IN THE PARQUE ESTADUAL DA SERRA DE CALDAS NOVAS BRAZIL The way the animals look for food is an important characteristic of their behavior. The optimal foraging theory is based on the existence of a balance between costs and benefits of these behavioral decisions. The present study aimed to evaluate the behavior of the pollinator in response to increased availability of floral resources. The experiment was conducted in a recently burned Cerrado area (Campo rupestre) in the State Park of Serra de Caldas Novas , located in the municipalities of Caldas Novas and Rio Quente Brazil. The species chosen to test our hypothesis was Galactia peduncularis (Benth.) Taub. (Leguminosae: Papilionoidea). 17 pairs of specimens were selected with a number of flowers, and the individuals of each pair were spaced by about 2m. In these pairs, one of them was considered the focal, and the other, the isolated. To test possible differences in pollination between isolated plants and focus, we performed two randomization tests: a test binary (TB), where all pairs were analyzed and verified the number of times where the focus on the individual floral visits were higher than the number of visits in isolated. According to the data analyzed, floral visitors preferred to use plants that could provide a greater amount of floral resources so that the number of visitors varied positively with the increment of flowers. Plants with many flowers can provide a greater amount of food in one location so that visitors do not need to flower around for long distances in search of meeting their energy needs.

MONITORAMENTO DO USO E OCUPAÇÃO DO SOLO EM ÁREA DE INFLUÊNCIA DO MUNICÍPIO DE FAZENDA RIO GRANDE – REGIÃO METROPOLITANA DE CURITIBA-PR

The use and occupation of soil in the municipality of Fazenda Rio Grande, in the Curitiba-PR Metropolitan Area, were evaluated by photo interpretation and satellite image interpretation. Aerial photographs of 1952, 1962, 1980, 1996, orthophotochart of 1980 and TM-Landsat/5 satellite images of 2001, bands 3, 4, and 5 were used. A vast drain network occupies the region, where soils such as Oxisols are in the plains and Ultisols are in the more inclined areas. The following thematic classes were identified: forest, swamp forest, field, swamp mining, swamp, swamp agriculture, urban area, and reforestation. Along 49 years, there was a large alteration of the urban occupation, which did not exist in 1952, practically did not exist in 1962, with significant occupation during the period from 1980 to 2001.