Alpheus cedricisp. n. is described based on two specimens collected under rocks while scuba diving off the coast of Ascension Island, central Atlantic Ocean. The new species belongs to the Alpheus macrocheles (Hailstone, 1835) species complex and appears to be most closely related to the eastern-central Atlantic Alpheus macrocheles, the western Atlantic Alpheus amblyonyx Chace, 1972, and the ea...

The aim of this study was to evaluate the differences between juvenile and mature woods Populus alba trees in axial radial directions stem. For purpose, three stands P. were randomly chosen cut from at their diameter breast height. Three disks with a thickness 5 cm taken different height levels along tree stems. specimens sequentially position according ISO standards method. results indicated t...