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47  Articles
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The particulate organic carbon (POC) is an important energy source present in the food chain of detritivorous fish. Considering its importance, this study aimed to investigate the effect of the flood pulse on the composition of the POC in a neotropical fl... see more

The cocoa provides signif?icant levels of carbon (C) and nitrogen (N) by the leaf litter; the change of agronomic management causes variation in the contents of these elements in the soil. The objective was to evaluate the variations of the isotopes of d1... see more

Macrodactylus pumilio Burm. (Coleoptera: Scarabeidae) and Naupactus cervinus (Boh.) (Coleoptera: Curculionidae) are considered primary pests in citrus crops in Brazil, causing damage to plants and decreasing productivity. However, few studies investigate ... see more

O município de Campo Mourão está situado em zona de transição entre a Floresta Ombrófila Mista e Floresta Estacional Semidecidual com enclaves de Cerrado. O professor Reinhard Maack (1892-1969) foi o primeiro a admitir a hipótese de que o Cerrado seria um... see more

We compared duplicate samples of whole blood samples from 18 reindeer that were preserved either by immediate freezing or by immersion in 70 % ethanol. All samples were dried at 60 °C, powdered, treated with 1:1 chloroform: methanol, and dried again befor... see more

Scallop (Pectenidae: Chlamydinae sp.) is fauna habitat in seashore ecosystem and had commercial value commudity. The aims this study were to identify the main composition of stable isotopes, food sources, and trophic level from scallop and potential food ... see more

The particulate organic carbon (POC) is an important energy source present in the food chain of detritivorous fish. Considering its importance, this study aimed to investigate the effect of the flood pulse on the composition of the POC in a neotropical fl... see more

The present study investigates the d13C and d15N isotopic composition in frozen samples (control), samples in alcohol and in formaldehyde of Plagioscion squamosissimus and Hypophthalmus edentates. From each individual we extracted a strip of muscle from t... see more

Em Ciências Ambientais o uso de d13C e d15N como traçadores biológicos é dependente do entendimento dos processos físicos, químicos e biológicos que determinam a proporção entre isótopos leves e pesados de uma amostra em estudo. A presente síntese procura... see more

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