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dc.contributor.advisorSantos Flores, Carlos J.
dc.contributor.authorArocho Hernández, Nahíra
dc.date.accessioned2017-12-06T18:15:01Z
dc.date.available2017-12-06T18:15:01Z
dc.date.issued2015
dc.identifier.urihttps://hdl.handle.net/20.500.11801/93
dc.description.abstractMangrove forests are recognized as highly productive ecosystems; nevertheless, their ecological values, biota, and food webs are complex and yet to be understood. Scientific publications and information on aquatic invertebrates in the mangroves of Puerto Rico are scarce and mostly outdated. The Boquerón Wildlife Refuge (BWR), located in Boquerón, Cabo Rojo, is the largest mangrove forest stand in Puerto Rico's west coast. Many of the mangrove channels in the BWR are invaded by thick mats of Salvinia spp. An assessment of the aquatic macroinvertebrate diversity in three mangrove areas in the BWR invaded by Salvinia spp. and three areas without these floating ferns was conducted once a month from June to November of 2013. Salinity and pH were measured for each sampling. Three sampling methods were used; aquatic light traps, Malaise traps, and D-net sweeps. Whole samples were screened and the organisms sorted and identified. A total of 21,305 invertebrates were collected and identified, at least to order-level. These organisms belong to 20 orders and 81 families. The most abundant order was Diptera. The groups with the greatest family richness were Diptera (21 families) and Coleoptera (12 families). The BWR showed a highly diverse ecosystem and the abundance of macroinvertebrates showed spatial and temporal variations. There was no clear relationship between the pH, salinity and precipitation and the abundance of organisms probably because the water level of the refuge is controlled manually through dikes. Mangrove areas with and without Salvinia behave as two distinctive habitats; similarity index values (Jaccard) were 0.5 which indicates that they share only around the half of their taxa (families). Each sampling method rendered a distinctive fauna. This study will serve as a baseline characterization for future studies, for the biomonitoring and specific management programs for the preservation of its biodiversity.
dc.description.abstractLos manglares son considerados ecosistemas altamente productivos; sin embargo, su valor ecológico, biodiversidad, redes tróficas son complejas y poco entendidas. Las publicaciones científicas sobre los invertebrados acuáticos asociados a los manglares de Puerto Rico son escasas y no están actualizados. El Refugio de Vida Silvestre de Boquerón, ubicado en Boquerón, Cabo Rojo, es el bosque de manglar más grande del área oeste de Puerto Rico. Muchos de los canales del refugio han sido invadidos por el complejo de Salvinia spp. De junio a noviembre del 2013, se llevó a cabo una evaluación de la diversidad de macroinvertebrados acuáticos en tres zonas de manglares invadidas por Salvinia y tres áreas sin la presencia de la planta. La salinidad y el pH se midieron para cada muestreo. Se utilizaron tres métodos de muestreo: trampas acuáticas de luz, trampas de Malaise y redes de arrastre. Las muestras se examinaron completas y los organismos fueron separados e identificados por lo menos a nivel de orden. Se colectaron 21,305 invertebrados, estos se distribuyeron en 20 órdenes y 81 familias. El orden más abundantes fue Diptera. Los grupos con mayor riqueza a nivel de familia fueron Diptera (21 familias) y Coleoptera (12 familias). El bosque de manglar del refugio es bien diverso y se encontraron variaciones temporales y espaciales en la abundancia de los macroinvertebrados. No se encontró relación entre el pH, salinidad y precipitación con respecto a la abundancia de organismos posiblemente debido a que el nivel de agua del refugio se controla manualmente a través de los diques. Las zonas de manglar con y sin la presencia de Salvinia spp. se comportan como hábitats distintivos; esto se puede apreciar con los valores cercanos a 0.5 del Índice de Similaridad (Jaccard), lo que indica que las áreas comparten solo la mitad de sus taxones. Cada método de colecta representó una fauna distintiva. Este trabajo sienta las bases para estudios futuros y el desarrollo de programas de biomonitoreo y de manejo específicos para estos humedales.
dc.description.sponsorshipDepartment of Natural and Environmental Resources of Puerto Rico, Boquerón Wildlife Refuge (BWR). The HHMI (Howard Hughes Medical Institute) program for the funding given to the undergraduates working at the Aquatic Biology Laboratory.en_US
dc.language.isoenen_US
dc.subjectMangrove forestsen_US
dc.subjectBoqueron Wildlife Refuge (BWR)en_US
dc.subjectAquatic invertebratesen_US
dc.subject.lcshMarine invertebrates Puerto Rico, Cabo Rojo Classificationen_US
dc.subject.lcshMangrove forests Puerto Rico Cabo Rojoen_US
dc.subject.lcshSalviniaen_US
dc.subject.lcshMarine biodiversity Puerto Rico, Cabo Rojoen_US
dc.titleComparison of the macroinvertebrates communities in areas covered and devoid of the floating fern Salvinia spp. in Boquerón Wildlife Refuge (BWR) at Cabo Rojo, Puerto Ricoen_US
dc.rights.licenseAll rights reserveden_US
dc.rights.holder(c) 2015 Nahíra Arocho Hernándezen_US
dc.contributor.committeeAlfaro Lozano, Mónica
dc.contributor.committeeAcosta Martínez, Jaime
dc.contributor.representativeRamírez Durand, Lillian
thesis.degree.levelM.S.en_US
thesis.degree.disciplineBiologyen_US
dc.type.thesisThesisen_US
dc.contributor.collegeCollege of Arts and Sciences - Sciencesen_US
dc.contributor.departmentDepartment of Biologyen_US
dc.description.graduationSemesterFallen_US
dc.description.graduationYear2015en_US


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