Abstract Drones have proven to be versatile tools for scientific studies aimed at assessing the environmental quality of various ecosystems. This study diagnosed the restinga vegetation in the coastal municipality of Pontal do Paraná, in the state of Paraná, Southern Brazil. This vegetation, which extends over 21.72 km of the coastline of the municipality, was grouped into eight sectors to optimize 27 drone flight plans. The images obtained were transformed into orthomosaics and classified into eight classes, following the random forest classifier: herbaceous, shrubby, arboreal, sand, degraded area, irregular construction, water, and other. We observed 289.11 ha of restinga, of which 183.66 ha (63.5%) corresponded to conserved areas and 105.45 ha (36.5%), to a total degraded area with irregular constructions, vegetation suppression, and introduction of exotic species. Sectors 1 and 5 showed the lowest (8.19 ha) and highest (21.00 ha) values of degraded areas, respectively. Sectors 6 and 8 were the most critical: their degraded areas exceeded the conserved areas of restinga by 4.15 and 3.95 ha, respectively. The main causes of the degradation n in this study refer to irregular occupation. Drone images are a valuable tool for environmental management and vegetation analysis of difficult-to-access sites. ecosystems Paraná Brazil 2172 21 72 21.7 2 plans classes classifier herbaceous shrubby arboreal sand construction water other 28911 289 11 289.1 18366 183 66 183.6 63.5% 635 63 (63.5% 10545 105 45 105.4 36.5%, 365 36.5% , 36 (36.5%) constructions suppression species 8.19 819 19 (8.1 21.00 2100 00 (21.0 respectively critical 415 4 15 4.1 395 3 95 3.9 occupation difficulttoaccess difficult access sites 217 7 21. 2891 28 289. 1836 18 183. 63.5 (63.5 1054 10 105. 36.5 (36.5% 8.1 81 (8. 21.0 210 0 (21. 41 4. 39 9 3. 63. (63. 36. (36.5 8. (8 (21 (63 (36. ( (2 (6 (36 (3

RESUMO Nascentes localizadas em locais públicos, como praças e parques, frequentemente são utilizadas pela população como fonte alternativa de água, o que pode colocar em risco a saúde pública quando não há qualidade adequada para consumo. O objetivo deste trabalho foi avaliar a água das bicas localizadas em três parques públicos da cidade de Curitiba, Paraná. O monitoramento foi realizado mensalmente por meio de de análises microbiológicas de coliformes totais (CT), Escherichia coli (EC) e bactérias heterotróficas (BH), e tomadas de pH, com coletas em triplicata durante um ano em três pontos: Parque Atuba (A), Parque Gutierrez (B) e Parque São Lourenço (C). Os resultados mostraram contaminação por CT no ponto A, em B foi observado presença em níveis elevados em todas as coletas de CT(log 2,4350±0,6730 NMP.100 mL-1), EC (log 1,0890±0,6327 NMP.100 mL-1) e BH (log 1,9170±0,6920 UFC.mL-1), não sendo observadas diferenças significativas entre os períodos de coleta (p>0,05). Foi evidenciado que nos períodos chuvosos a condição de potabilidade da água decaiu em todos os pontos avaliados, com aumento significativo na contagem de CT seguido pelo acréscimo de BH, sugerindo infiltração nas nascentes canalizadas. A presença constante de EC no ponto B sugere contaminação por esgoto, o que pode colocar em risco a saúde das pessoas que consomem a água disponível nas bicas.

ABSTRACT Water sources in public places like parks and squares are often used by people as an alternative for available water, which might be a public health concern when there is no adequate quality for consumption. The aim of this study was to evaluate the water quality from the fountains located in three public parks in Curitiba, Paraná, Brasil. The monitoring was conducted monthly by microbiological analysis of total coliforms (TC), Escherichia coli (EC) and heterotrophic bacteria (HB) and the pH was taken, with triplicate samples during a year at three sites: Atuba Park (A), Gutierrez Park (B) and São Lourenço Park (C). The results showed TC in site A; at B it was observed the presence, at high levels, of TC (log 2.4350± 0.6730 NMP.100 mL-1), EC (log 1.0890±0.6327 NMP.100 mL-1) and HB (log 1.9170±0.6920 UFC.mL-1), significant differences among sampling periods were not observed (p>0.05). It was observed that in the rainy season the condition of water portability decreased in all evaluated sites with a significant increase in TC, followed by increasing of HB, suggesting infiltration in the channeled sources. The presence of E. coli in site B suggests wastewater pollution, which can endanger the health people consuming the available water in the taps.