Iraci Scopel

MAPEAMENTO DA FRAGILIDADE AMBIENTAL DA BACIA HIDROGRÁFICA DO CORREGO DA ONÇA EM JATAÍ (GO), UTILIZANDO TECNICAS 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.

INCÊNDIOS EM VEGETAÇÃO ENTRE 2000 E 2002, NAS PROPRIEDADES RURAIS LIMÍTROFES ÀS RODOVIAS PAVIMENTADAS DO MUNICÍPIO DE JATAI-GO

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.

Avaliação do estado de assoreamento do reservatório de Cachoeira Dourada (GO/MG)

This research analyzed the degree of sedimentation in Cachoeira Dourada reservoir Brazil, belonging to the Paranaiba hydrologic catchment basin. Were evaluated bottom sediments of the lake, in an area of 74 km2. Were considered particle and bathymetric parameters. The results, presented on the maps, showed the distribution of the particles chacteristics and allowed to estimate the volume of sediments. The bottom deposits are essentially constituted of silt and clay in the portion near the dike; of fine and very fine sandy material in the middle sector of the reservoir and, in the beginning of the reservoir, we have since silt just large sand. By comparison of topographic data, since the construction of the reservoir, with present measured bathymetric data, the Cachoeira Dourada reservoir lost 38.5 % of its original storing capacity. The expected reservoir useful life, estimated in this research, is of about 145 years, following this deposition rhythm.

ANÁLISE DA FRAGILIDADE AMBIENTAL DA BACIA DO RIBEIRÃO DAS ABÓBORAS, EM RIO VERDE, SUDOESTE DE GOIÁS

Objetivou-se avaliar a fragilidade ambiental da bacia do Ribeirao das Aboboras (199,1 km²), localizada no municipio de Rio Verde, Sudoeste de Goias. Utilizou-se o metodo proposto por Ross (1994), baseado em classes de declividade, solos, erosividade, uso da terra e cobertura vegetal. A area de estudo apresenta: fragilidade ambiental potencial com predominância da classe baixa (72,73%), seguida pela classe muito baixa (23,40%) e classe alta (3,87%); medio risco de erosividade (643,04 tn.ha-1.ano-1); e fragilidade ambiental emergente com maior extensao da classe media (78,96%), seguida pela classe baixa (20,60%) e classe alta (0,35%). Estes resultados inferem que a bacia apresenta condicoes fisicas e climaticas, na sua maior parte, favoraveis a sua conservacao, mas o manejo dos solos inadequado, principalmente nas areas com aspectos favoraveis a erosao, esta causando prejuizos ambientais e, consequentemente, economicos.

PARTIÇÃO PLUVIOMÉTRICA EM FITOFISIONOMIAS DO CERRADO

Resumen pt: O presente trabalho teve como objetivo determinar as particoes pluviometricas - interceptacao (I); precipitacao interna (PI); precipitacao efetiva (PE) e...

CARACTERÍSTICAS FISIOGRÁFICAS E MORFOMÉTRICAS DA MICROBACIA DO CÓRREGO JATAÍ NO MUNICÍPIO DE JATAÍ-GO

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.

INTENSIDADE PLUVIOMÉTRICA E VULNERABILIDADE À EROSÃO DO SOLO NA ÁREA DE DRENAGEM DO RESERVATÓRIO DE CACHOEIRA DOURADA-GO/MG

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.

A RELAÇÃO HOMEM-NATUREZA E OS DISCURSOS AMBIENTAIS

Apesar dos avancos tecnologicos a sociedade ainda nao conseguiu tornar-se independente dos recursos naturais. Desde a fase primitiva, quando o homem tinha uma relacao de dependencia total, a natureza era vista como fonte de alimento. Depois, o homem adquire o habito sedentario, criando novas habilidades tecnologicas, no intuito de dominar progressivamente a natureza. Entretanto, as sociedades evoluiram, sendo que o grande problema da civilizacao moderna, industrial e tecnologica e, talvez, nao ter percebido a dependencia com a natureza. Em busca do rompimento desta dependencia as sociedades, baseadas no seu modo de producao, apresentaram varios discursos ambientais. Nesse contexto sao apresentados os conceitos da relacao natureza/natural e homem/sociedade e alguns discursos como: da crise ambiental, dos ecologistas, do ecodesenvolvimento, da natureza como patrimonio de todos, do medo ecologico e da Universidade.