| variation of biometric parameters and c, n, and p concentrations of oryza glumaepatula at different depths of an amazonian lake impacted by bauxite tailings (lake batata, pará, brazil). | lake batata is a typical amazonian clear water lake which has undergone anthropogenic impacts. thirty percent of its total area has been covered with bauxite tailings. thus, it is possible to distinguish two areas in this ecosystem: the impacted and the natural. the goal of this research was to study c, n, and p content variation and the values of biomass, length, density, and culm diameter of oryza glumaepatula at different depths in the natural and impacted areas of lake batata. the results ob ... | 2002 | 12185927 |
| spatial distribution and coexisting patterns of adults and nymphs of tibraca limbativentris (hemiptera: pentatomidae) in paddy rice fields. | the rice stem stink bug, tibraca limbativentris stål (hemiptera: pentatomidae), is a primary insect pest of paddy rice in south america. knowledge of its spatial distribution can support sampling plans needed for timely decisions about pest control. this study aimed to investigate the spatial distribution of adults and nymphs of t. limbativentris and determine the spatial coexistence of these stages of development. fifteen paddy rice fields were scouted once each season to estimate insect densit ... | 2016 | 28028098 |