Show simple item record

dc.contributor.advisorBallantine, David L.
dc.contributor.authorRuiz-Torres, Héctor J.
dc.date.accessioned2018-06-06T16:47:44Z
dc.date.available2018-06-06T16:47:44Z
dc.date.issued2012
dc.identifier.urihttps://hdl.handle.net/20.500.11801/739
dc.description.abstractA detailed 5 year study of algal community structure at 8 coral reefs distributed across the insular shelf at La Parguera, Puerto Rico was undertaken between 2003 and 2007. Significant temporal variation in species cover and composition was documented for the shelf edge reefs. Conversely little temporal variation at mid shelf or inshore reefs occurred during the same time period. Previously considered as being a relatively undisturbed ecosystem, the shelf edge reefs in the southwest Puerto Rico were documented to be undergoing a phase shift from a coraldominated reef to an algal dominated reef. The significant and dramatic increase in total cover of shelf edge benthic algae was calculated to be 43%. Composition of the algal flora also changed during the period. Multivariate statistical analyses indicated that differences in algae composition between reefs were influenced by differences in water depth and distance from shore. The fine-scale examination of coral reef-associated algae resulted in recognition of a number of new elements to the Puerto Rican flora as well as recognition and description of four new species. New records for the flora included: Lithophyllum congestum, Metapeyssonnelia corallepida, Dictyota pfaffii, Peyssonnelia boergesenii, Caulerpa nummularia, Myriogramme prostrata, Kallymenia limminghei and Antithamnionella graeffei. Species new to science were Halichrysis corallinarius, Peyssonnelia flavescens, Metapeyssonnelia milleporoides, Botryocladia iridescens and Cresia opalescens.en_US
dc.description.abstractEntre el 2003 y el 2007, se realizó un estudio detallado de las comunidades de algas en 8 arrecifes de coral distribuidos a través de la plataforma insular de La Parguera, Puerto Rico. En los arrecifes del borde la plataforma insular (veril) se documentó variación temporal significativa en la cobertura de espacio por especies y composición de algas, mientras que los arrecifes localizados en el centro de la plataforma insular y aquellos cercanos a la orilla no presentaron variaciones temporales significativas. Los arrecifes del veril demuestran indicios de un cambio de fase de ser dominados por corales a la dominancia de las algas. Los resultados de los estudios bénticos muestran un incremento de 43% en la cobertura total de algas en el veril lo que se considera significativo y la composición de la flora de algas también cambió durante el mismo periodo. Análisis estadísticos multivariados indicaron que las diferencias en la composición de algas entre los arrecifes fueron influenciados por factores tales como la profundidad y la distancia a la línea de costa. Durante los estudios a pequeña escala de las algas asociadas a los arrecifes de coral, se describen nuevos elementos en la flora de las algas en Puerto Rico. De igual manera, se descubrieron cinco especies nuevas. Los nuevos reportes a la flora de Puerto Rico incluyen: Lithophyllum congestum, Metapeyssonnelia corallepida, Dictyota pfaffii, Peyssonnelia boergesenii, Caulerpa nummularia, Myriogramme prostrata, Kallymenia limminghei y Antithamnionella graeffei. Se descubrieron las siguientes especies: Halichrysis corallinarius, Peyssonnelia flavescens, Metapeyssonnelia milleporoides, Botryocladia iridescens y Cresia opalescens.en_US
dc.description.sponsorshipNOAA grants NA17OP2919 (CRES) and NA06NOS4780190 (Deep CRES)en_US
dc.language.isoenen_US
dc.subjectAlgae culture--La Parguera Natural Reserve (P.R.)en_US
dc.subjectAlgae--coral reefs-Puerto Rico--Southwesten_US
dc.subjectCoral reefs--ecology--Puerto Rico--Southwesten_US
dc.subject.lcshAlgal communities--Puerto Rico--Lajasen_US
dc.subject.lcshMarine algae--Compositionen_US
dc.titleSpatial and temporal variations in the relative abundances of coral reef algae in Southwest Puerto Ricoen_US
dc.typeDissertationen_US
dc.rights.licenseAll rights reserveden_US
dc.rights.holderHéctor J. Ruiz Torresen_US
dc.contributor.committeeAppeldoorn, Richard
dc.contributor.committeeAponte, Nilda
dc.contributor.committeeYoshioka, Paul
dc.contributor.committeeKubaryk, John M.
dc.contributor.representativeAlfaro, Mónica
thesis.degree.levelPh.D.en_US
thesis.degree.disciplineMarine Sciencesen_US
dc.contributor.collegeCollege of Arts and Sciences - Sciencesen_US
dc.contributor.departmentDepartment of Marine Sciencesen_US
dc.description.graduationSemesterFallen_US
dc.description.graduationYear2012en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

  • Theses & Dissertations
    Items included under this collection are theses, dissertations, and project reports submitted as a requirement for completing a degree at UPR-Mayagüez.

Show simple item record

All rights reserved
Except where otherwise noted, this item's license is described as All Rights Reserved