Publications by authors named "Adriano Guido"
Tidally-influenced subterranean settings represent natural geomicrobiological laboratories, relatively unexplored, that facilitate the investigation of new biomineralization processes. The unusual water chemistry of Zinzulùsa Cave and its oligotrophic and aphotic conditions have allowed the development of a unique ecosystem in which complex bacterial activities induce rare biomineralization processes. A diversified microbial community develops on centimeter-thick crusts that form in the submerged part of the cave.
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- The polychaete worm Sabellaria spinulosa lives in tube structures that create reef-like environments in shallow, wave-beaten waters, using sand grains glued together by a protein-based cement.
- An analysis of S. spinulosa tubes from the Adriatic Sea revealed a unique architecture consisting of three distinct layers, differing in density and size of sand grains.
- Compared to a related species, S. alveolata, S. spinulosa has thinner, smaller tubes with irregular biocement distribution and more empty spaces between adjacent tubes.
Article Synopsis
- * The research utilizes advanced microscopy techniques to characterize the organisms and structures involved in the formation of these crusts, revealing details such as sponge spicules and different types of micrite.
- * Findings contribute to understanding the interaction between sponges and bacteria in unique underwater environments, enhancing the interpretation of past fossil records.
Article Synopsis
- Sabellaria alveolata is a polychaete worm that creates reef-like structures in shallow, high-energy waters using agglutinated tubes made of sand particles and protein secretions.
- Research on a tube fragment from SE Sicily revealed a complex tube architecture consisting of multiple layers, including a thin organic membrane and varying grain arrangements.
- The biocement that holds the tubes together has a foam-like structure rich in carbon, phosphorus, and nitrogen, but its organic composition and the dynamic habitat contribute to the reef's ephemeral nature, making fossil preservation rare.