Assessing population structure of Diadema antillarum in a shallow reef of the southeastern coast of the Dominican Republic

The sea urchin Diadema antillarum is an herbivore that plays an important ecological role in controlling benthic community structure in Caribbean reefs. After the mass mortality documented between 1982-1983, their populations were reduced by 94-99% triggering a phase shift from coral to macroalgae-d...

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Detalhes bibliográficos
Autores: Can, Ivan, Sellares, Rita, Croquer, Aldo
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Recursos:Universidad de La Laguna (ULL)
Repositorio:RIULL. Repositorio Institucional de la Universidad de La Laguna
OAI Identifier:oai:riull.ull.es:915/26569
Acesso em linha:http://riull.ull.es/xmlui/handle/915/26569
Access Level:acceso abierto
Palavra-chave:Diadema antillarum
Dominican Republic
density
test size
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spelling Assessing population structure of Diadema antillarum in a shallow reef of the southeastern coast of the Dominican RepublicCan, IvanSellares, RitaCroquer, AldoDiadema antillarumDominican Republicdensitytest sizeThe sea urchin Diadema antillarum is an herbivore that plays an important ecological role in controlling benthic community structure in Caribbean reefs. After the mass mortality documented between 1982-1983, their populations were reduced by 94-99% triggering a phase shift from coral to macroalgae-dominated benthic communities across the Caribbean. Almost 4 decades after its regional collapse, it is not clear weather D. antillarum populations are recovering, thus local surveys are valuable to track the fate of this herbivore. This study aims to determine the population structure of this sea urchin in a shallow reef located southeast of the Dominican Republic. We conducted a visual survey in three haphazardly selected sites of the reef studying a total surface of 90 m2 in which test size and D. antillarum densities were measured. Overall, the mean density of D. antillarum was 1.77 ± 1.07 ind/ m2 (Mean ± SD) with an average test size of 67.3 ± 22.7 mm (Mean ± SD) a median of 70 mm and a mode of 80 mm. Test diameter had a platykurtic distribution (kurtosis = 2.53) slightly skewed to the left (skewness = -0.1). This information is valuable to establish a local baseline to follow up the population dynamics of this key species.El erizo Diadema antillarum es un herbívoro clave en el control de las comunidades bentónicas del Caribe. Tras los eventos de mortalidad masiva de 1982-1983, sus poblaciones se redujeron un 94-99%, lo que provocó un cambio de fase de corales a comunidades dominadas por macroalgas en el Caribe. Casi 4 décadas después del colapso, esta especie no se está recuperando, por lo que los estudios locales son valiosos para conocer la tendencia de sus poblaciones. Nuestro objetivo es determinar su estructura poblacional en un arrecife poco profundo del sureste de la República Dominicana. Muestreamos en tres sitios del arrecife, explorando una superficie total de 90 m2 en los que se midieron el diámetro del caparazón y las densidades de D. antillarum. La densidad media de D. antillarum fue 1,77 ± 1,07 ind/ m2 (Media ± DE) con un tamaño de caparazón medio de 6,73 ± 2,27 cm (Media ± DE), una mediana de 7 cm y una moda de 8 cm. La distribución del diámetro fue platicúrtica (curtosis = 2,53), ligeramente sesgada hacia la izquierda (asimetría = -0,1). Estos resultados sirven para establecer una línea base para el seguimiento de la dinámica poblacional de esta especie.Universidad de La Laguna. Servicio de Publicaciones202220222021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://riull.ull.es/xmlui/handle/915/26569reponame:RIULL. Repositorio Institucional de la Universidad de La Lagunainstname:Universidad de La Laguna (ULL)InglésScientia Insularum, 2021, n.4, pp. 207-212;Attribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:riull.ull.es:915/265692026-06-22T13:13:57Z
dc.title.none.fl_str_mv Assessing population structure of Diadema antillarum in a shallow reef of the southeastern coast of the Dominican Republic
title Assessing population structure of Diadema antillarum in a shallow reef of the southeastern coast of the Dominican Republic
spellingShingle Assessing population structure of Diadema antillarum in a shallow reef of the southeastern coast of the Dominican Republic
Can, Ivan
Diadema antillarum
Dominican Republic
density
test size
title_short Assessing population structure of Diadema antillarum in a shallow reef of the southeastern coast of the Dominican Republic
title_full Assessing population structure of Diadema antillarum in a shallow reef of the southeastern coast of the Dominican Republic
title_fullStr Assessing population structure of Diadema antillarum in a shallow reef of the southeastern coast of the Dominican Republic
title_full_unstemmed Assessing population structure of Diadema antillarum in a shallow reef of the southeastern coast of the Dominican Republic
title_sort Assessing population structure of Diadema antillarum in a shallow reef of the southeastern coast of the Dominican Republic
dc.creator.none.fl_str_mv Can, Ivan
Sellares, Rita
Croquer, Aldo
author Can, Ivan
author_facet Can, Ivan
Sellares, Rita
Croquer, Aldo
author_role author
author2 Sellares, Rita
Croquer, Aldo
author2_role author
author
dc.subject.none.fl_str_mv Diadema antillarum
Dominican Republic
density
test size
topic Diadema antillarum
Dominican Republic
density
test size
description The sea urchin Diadema antillarum is an herbivore that plays an important ecological role in controlling benthic community structure in Caribbean reefs. After the mass mortality documented between 1982-1983, their populations were reduced by 94-99% triggering a phase shift from coral to macroalgae-dominated benthic communities across the Caribbean. Almost 4 decades after its regional collapse, it is not clear weather D. antillarum populations are recovering, thus local surveys are valuable to track the fate of this herbivore. This study aims to determine the population structure of this sea urchin in a shallow reef located southeast of the Dominican Republic. We conducted a visual survey in three haphazardly selected sites of the reef studying a total surface of 90 m2 in which test size and D. antillarum densities were measured. Overall, the mean density of D. antillarum was 1.77 ± 1.07 ind/ m2 (Mean ± SD) with an average test size of 67.3 ± 22.7 mm (Mean ± SD) a median of 70 mm and a mode of 80 mm. Test diameter had a platykurtic distribution (kurtosis = 2.53) slightly skewed to the left (skewness = -0.1). This information is valuable to establish a local baseline to follow up the population dynamics of this key species.
publishDate 2021
dc.date.none.fl_str_mv 2021
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://riull.ull.es/xmlui/handle/915/26569
url http://riull.ull.es/xmlui/handle/915/26569
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Scientia Insularum, 2021, n.4, pp. 207-212;
dc.rights.none.fl_str_mv Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidad de La Laguna. Servicio de Publicaciones
publisher.none.fl_str_mv Universidad de La Laguna. Servicio de Publicaciones
dc.source.none.fl_str_mv reponame:RIULL. Repositorio Institucional de la Universidad de La Laguna
instname:Universidad de La Laguna (ULL)
instname_str Universidad de La Laguna (ULL)
reponame_str RIULL. Repositorio Institucional de la Universidad de La Laguna
collection RIULL. Repositorio Institucional de la Universidad de La Laguna
repository.name.fl_str_mv
repository.mail.fl_str_mv
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