Results 41 to 50 of about 6,145 (182)

Coral reef erosion: In situ measurement on different dead coral substrates on a Caribbean reef

open access: yesLimnology and Oceanography, Volume 67, Issue 12, Page 2734-2749, December 2022., 2022
Abstract Widespread mortality of reef‐building coral substantially reduces the capacity for reef growth and makes available extensive bare substrate areas that in the absence of coral recovery will be eroded by a variety of external and internal bioeroders.
Ana Molina‐Hernández   +4 more
wiley   +1 more source

Diagnostic Methods for the Comprehensive Health Assessment of the Long-Spined Sea Urchin, Diadema antillarum

open access: yesEDIS, 2020
This 55-page document contains a wealth of information on the long-spined sea urchin, which is an important animal in coral reef ecosystems. The publication discusses diagnostic methods for Diadema antillarum and provides reporting forms for laboratory ...
Ruth Francis-Floyd
doaj   +5 more sources

Does artificial shelter have a place in Diadema antillarum restoration in the Florida Keys? Tests of habitat manipulation and sheltering behavior

open access: yesGlobal Ecology and Conservation, 2021
The Diadema antillarum population in the Florida Keys has not recovered since the Caribbean-wide mass mortality event of the early 1980s. Concomitantly, coral reefs have degraded to the point that there has been a loss of habitat complexity and thus of ...
Gabriel A. Delgado, William C. Sharp
doaj   +1 more source

The Occurrence of Melanin in the Sea-Urchin, Diadema Antillarum Philippi

open access: yesJournal of Investigative Dermatology, 1952
INTRODUCTION The characteristic dark color of Diadema antillarum is chiefly attributable to a black pigment, most of which is contained in large epidermal chromatophores (see Fig. 1). A red pigment is also present, but is easily separable from the black, being readily soluble in ethanol and acetone, whereas the black is not.
Millott, N., Jacobson, F.W.
openaire   +2 more sources

[Abundance of Diadema antillarum (Echinodermata: Echinoidea) in the coasts of Venezuela].

open access: yesRevista de biologia tropical, 2006
Diadema antillarum is a shallow-water sea-urchin from the tropical Atlantic whose populations almost disappeared in 1983-84 because of widespread mortalities which reached 87-100 %. In Venezuela, urchin population densities before the mortality event were comparable to those of other Caribbean regions; however, later abundancies remain unknown.
Noriega, Nicida   +2 more
openaire   +3 more sources

The Sea Urchin Diadema antillarum (Echinodermata, Equinoidea), algal cover and juvenile coral densities in La Parguera, Puerto Rico

open access: yesCuadernos de investigación UNED, 2013
Grazing by the black sea urchin Diadema antillarum reduces algal cover and enhances coral recruitment. The overall goal of this project was to examine if there is a relationship between densities of D.
Francisco J. Soto Santiago   +1 more
doaj   +1 more source

Growth and foraging behavior of hatchery propagated long-spined sea urchins, Diadema antillarum: Implications for aquaculture and restocking

open access: yesAquaculture Reports, 2022
Stocking hatchery propagated long-spined sea urchins Diadema antillarum is a priority option for recovery of this keystone herbivore on Caribbean reefs. However, information on captive culture of D.
Md Mahbubul Hassan   +6 more
doaj   +1 more source

Diadema antillarum Philippi 1845

open access: yes, 2006
Diadema antillarum Philippi, 1845 Specimens of D. antillarum examined in this study were collected from Barbados, Gulf of Mexico, Jamaica, North Panama, Puerto Rico and the Virgin Islands. A maximum horizontal test diameter (h.d.) of 105 mm was observed in this species, with a corresponding vertical diameter (v.d.) of 50 mm.
Coppard, Simon Edward   +1 more
openaire   +2 more sources

Assisted Natural Recovery: A Novel Approach to Enhance Diadema antillarum Recruitment

open access: yesFrontiers in Marine Science, 2022
The massive die-off of the sea urchin Diadema antillarum in 1983–1984 is one the main reasons for low coral recruitment and little coral recovery in the Caribbean. As the natural recovery of D.
Alwin Hylkema   +6 more
doaj   +1 more source

The sea urchin Diadema antillarum – keystone herbivore or redundant species?

open access: yes, 2015
Two main hypotheses have been developed for describing the role and importance of the sea urchin Diadema antillarum on reefs of the Caribbean region in both space and time. The first and most crucial is whether D.
Lindsey L. Precht, William F. Precht
core   +2 more sources

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