Iskopaemye izvestkovye vodorosli SSSR [Fossil
calcareous algae from USSR].
I became fascinated by
calcareous algae. Why would a plant that needs the sun make itself a coat of armour?
In this study, nineteen genera and twelve species of benthic foraminifera, one genus of planktic foraminifera, three genera and four species of
calcareous algae and Lingulogavelinella arnagerensis assemblage zone were identified.
Macro- and
calcareous algae abundance did not differ between reefs but high coralline algae abundance was measured in Shimoni compared to all other reefs.
Treatments involved the addition of a calcium source to the concentrate, either limestone (LI) (calcitic limestone, Iguatama, Brazil) or a product derived from
calcareous algae (CA) (Top buffer[R] Sanphar, Campinas, Brazil), with or without the presence of monensin (MO) (Bovensin[R] Phibro, Guarulhos, Brazil).
The functional groups were determined following Steneck & Dethier (1994): a) foliose algae, b) filamentous algae, c) corticated foliose algae, d) corticated algae, e) articulated
calcareous algae, and d) crustose algae.
Forms of green algae mainly calcified are recognized as skeletal
calcareous algae. They commonly exhibit segments of (dasycladacead algae, according to the classification of Wray, 1977) with honeycomb structure and walls commonly of fine grained fibrous calcite (Fig.
Coronado and Rodriguez (2009) recognized syringoporoid corals in the algal-mounds of Cosgaya Formation in Cantabria (Spain) where they occur associated with
calcareous algae, chaetetids and rugose corals.
Among bigger algal species, tough cement makers called crustose
calcareous algae help hold a reef together and create ridges that withstand pounding waves.