Corallith beds at the edge of the tropical South Atlantic

  title={Corallith beds at the edge of the tropical South Atlantic},
  author={K{\'a}tia C.C. Capel and B{\'a}rbara Segal and Paulo Bertuol and Alberto Lindner},
  journal={Coral Reefs},
Free-living scleractinian colonies of spheroid shape, known as circumrotatory colonies or coralliths, have been reported for the Atlantic, Herein, we report the first corallith site discovered in the subtropical South Atlantic, a unique formation of free-living colonies of Madracis decactis (Lyman, 1859) (Scleractinia: Pocilloporidae) at Galé Island off southern Brazil (Fig. 1). The coralliths spread over 3400 m 2 of flat sand and ruble at 6–15 m depth, adjacent to a rocky shore on the westward… 

Figures from this paper

Rolling corals in the Mediterranean Sea
Nodular morphology is typical of free-living coralline algae (Rhodophyta), which form extensive rhodolith beds worldwide over broad latitudinal and depth ranges (Foster 2001). Strikingly, under
Wave-swept coralliths of Saba Bank, Dutch Caribbean
During a recent reef coral survey at the submarine Saba Bank (Eastern Caribbean), an uncommon and diverse assemblage of unattached scleractinian corals (coralliths) was encountered, which has not
Over 130 years of survival by a small, isolated population of Favia gravida corals at Ascension Island (South Atlantic)
The brooding reef coral Favia gravida (Verrill 1868) has an amphi-Atlantic geographic distribution with a restricted gene flow among populations (Nunes et al. 2011). It occurs on the mid-Atlantic
Unusual high coral cover in a Southwestern Atlantic subtropical reef
Subtropical Brazilian reefs are commonly composed by rocky frameworks with low coral abundance. Contrarily to most tropical reefs, our knowledge on coral assemblages in subtropical reefs is still
Extreme morphological plasticity enables a free mode of life in Favia gravida at Ascension Island (South Atlantic)
The variable shape of the corals at hand indicate that they have adopted a plastic free-living growth form that appears to be confined to a rock pool habitat.
Coral health rapid assessment in marginal reef sites
The scenario described here for native corals in Arraial do Cabo requires urgent action with further experimental work on factors that contribute to the demise of the corals with further monitoring programmes on benthic organisms makes the discernment of natural and anthropogenic impacts a difficult task.
New record of the endemic coral Porites sverdrupi (Gulf of California): do fluctuations in seawater temperature regulate its southernmost range limit?
Rising seawater surface temperatures worldwide may cause reef coral species to shift their geographical range towards cooler environments. Information on such shifts, however, remains scarce. The
A new Cladocora caespitosa population with unique ecological traits
This study reports on the main traits of a recently discovered C. caespitosa population in Formentera, Balearic Islands, W Mediterranean, which is highly interesting for future monitoring owing to its unique traits, the absence of necrosis signs related to past mortality events, and its location inside a marine reserve.
The southernmost Atlantic coral reef is off the subtropical island of Queimada Grande (24°S), Brazil
The Atlantic Ocean encompasses approximately 10% of the global carbonate reef area, but the austral limits of coral reef distribution within this basin are still unclear. The lack of reef area and
Recolonization of Marginal Coral Reef Flats in Response to Recent Sea‐Level Rise
In an era of global change and rising sea levels, the capacity for inshore reefs to survive is increasingly unclear. We report on recent colonization of an inshore reef-flat environment at Sanya Bay,


Corals on the move: morphological and reproductive strategies of reef flat coralliths
Although smaller branching coralliths are prone to mortality through burial and abrasion, high rates of clonal dispersal through corallith formation may represent a key reproductive strategy for branching reef flat corals, allowing redistribution of colonies to adjacent regions where sandy substrates are often unsuitable for larval recruitment.
Coral Reefs
As Dr. Guppy asks for information with regard to the corals found living at the greater depths round islands in the Indian and Pacific Oceans the following may be of interest.
Rolling stones amongst the Scleractinia: mobile coralliths in the Gulf of Panama Circumrotatory growth form in recent and Silurian corals
  • Proc 2nd Int Coral Reef Symp
  • 1973
DOI 10.1007/s00338-011-0818-3 Reef sites
  • DOI 10.1007/s00338-011-0818-3 Reef sites