Pyrrhulina australis Eigenmann & Kennedy, 1903, is widely distributed across the main hydrographic basins of South America. The taxonomic integrity of this species is nevertheless challenged by the lack of clear diagnostic characters, its marked geographic variation and the morphological overlap with its congeners. In this context, the present study investigated the genetic diversity of the P. australis group ( P. australis ,...

Accurate and precise wood volume estimates are vital for sustainable forest management and are typically obtained using sample-based estimators. This study explores cluster sampling for estimating wood volume in an Amazonian forest, aiming to: (1) measure the loss of precision and deviation in volume estimates by comparing full samples to reduced samples and (2) analyze how the distance between cluster subunits affects the vol...

The growing demand for offshore oil and gas production in deep waters has motivated the development of technologies to enable the continuous, reliable, and cost-effective monitoring of subsea equipment. Traditional inspection techniques rely on ROVs and AUVs, leading to delays between data acquisition and recovery and high operational costs. Underwater acoustic communication systems represent an attractive alternative for tran...