Avaliação de solução de cloreto de sódio em armadilhas de queda em Pinus elliottii Engelm.: preservação de formigas como um indicador da qualidade ambiental
Edaphic insects are considered good environmental quality indicators, specially the family Formicidae. However, the major limitation in studies of soil invertebrates is the lack of a standardized methodology to compare satisfactorily diversity among different ecosystems. The aim of this study was to...
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| Autores principales: | , , , , , , , |
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| Formato: | Objeto de conferencia |
| Lenguaje: | Portugués |
| Publicado: |
2012
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/26419 http://congresos.unlp.edu.ar/index.php/CCMA/7CCMA/paper/viewFile/895/204 |
| Aporte de: |
| Sumario: | Edaphic insects are considered good environmental quality indicators, specially the family Formicidae. However, the major limitation in studies of soil invertebrates is the lack of a standardized methodology to compare satisfactorily diversity among different ecosystems. The aim of this study was to evaluate the effects of different sodium chloride concentrations in the conservation of Formicidae in soil pitfall traps as well as the optimal collection time. The study was conducted in a plantation of Pinus Elliott located in Santa Maria, Rio Grande do Sul, Brazil. The experiment was conducted in a completely randomized design with six replicates. The treatments consisted of four concentrations of sodium chloride: 5g = T1, T2 = 10g, 15g = T3, and T4 = control, without the addition of sodium chloride in four times of collect, 2, 5, 10 and 15 days. To assess the effectiveness of preservative solutions the specimens collected were assigned to one of a three defined conservation categories classification. During the study we collected 1.145 individual of the family Formicidae. From comparison of treatments only, it was observed that treatments 2 and 3 with 10 and 15 g NaCl achieved the best conservation results. With respect to time of sampling, the specimens collected on two days had better state of preservation followed by individuals from the five-days collection. Regarding the number of specimens collected during 15 days we observed the highest average. However, they did not differ statistically from the others. Thus, it can be recommended for Formicidae specimen collection using sodium chloride solutions, an optimal concentration of 10 or 15 g per 200 ml of water with a collection time of 5 days. |
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