Possible role of bacteria in the degradation of macro algae Desmarestia anceps Montagne (Phaeophyceae) in Antarctic marine waters

Abstract

Bacterioplankton is a relevant component of coastal marine food webs. In Antarctica, environmental conditions strongly limit the growth rates and metabolic activity of the biota. Macroalgae, such as the large perennial brown algae Desmarestia anceps Montagne, are one of the main primary producers in this environment. The organic matter released as a result of the death and decomposition of these macroalgae is considered a key event in the supply of nutrients to other components of the Antarctic marine biota.