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56 resultados encontrados para: AUTOR: Carrillo Bibriezca, Laura Elena
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The environmental regime for climate change and the effects of climatic variability on maya livelihoods in Quintana Roo, Mexico
Chale Silveira, Karina N. (autora) ; Arce Ibarra, Ana Minerva (autora) ; Carrillo Bibriezca, Laura Elena (autora) ;
Contenido en: Socio-environmental regimes and local visions: transdisciplinary experiences in Latin America / Minerva Arce Ibarra, Manuel Roberto Parra Vázquez, Eduardo Bello Baltazar, Luciana Gomes de Araujo, editors Cham, Switzerland, German : Springer Nature Switzerland AG, 2020 páginas 159-184 ISBN:978-3-030-49767-5
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Resumen en: Inglés |
Resumen en inglés

Climatic variability is affecting rural and indigenous agricultural rainfed systems worldwide. This study aims (a) to determine how the national environmental regime for climate change operates in Quintana Roo, including the Maya Zone; (b) to assess the effects of climatic variability upon Maya livelihoods dependent on agricultural and forestry systems; and (c) to determine whether any of these effects of climatic variability on livelihoods are reflected in public policies at national and state levels. The study used a transdisciplinary approach combining natural and social science theory but also scientific and indigenous knowledge. Our results show that, in Mexico, the national regime for climate change is strongly linked to efforts at the global scale, but weakly linked to those at the local scale. Moreover, it was found that Maya rainfed agricultural and forestry systems are impacted to different degrees by droughts, extreme rains, and hurricanes, with slash-and-burn agriculture (milpa) being highly impacted by all three events. This situation not only affects the food security of the Maya people but also their ancestral cultural practices and indigenous knowledge. Moreover, 20–30% of the interviewees in this study seek alternative employment outside their communities as a coping strategy whenever meteorological events critically affect their livelihoods. The results of the review of both national (PECC) and the state-level (PEACCQROO) programs for climate change show that they currently fail to include specific lines of action on adaptation and mitigation strategies to cope with the effects of climate change on agricultural rainfed systems or its consequences for the rural Maya people.

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Retention and dispersion of virtual fish larvae in the Mesoamerican Reef
Martínez, Samuel (autor) ; Carrillo Bibriezca, Laura Elena (autora) ; Sosa Cordero, Eloy (autor) ; Vásquez Yeomans, Lourdes (autora) ; Marinone, S. G. (autora) ; Gasca, Rebeca (autora) ;
Disponible en línea
Contenido en: Regional Studies in Marine Science Volumen 37, artículo número 101350 (May 2020), p. 1-10 ISSN: 2352-4855
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Resumen en: Inglés |
Resumen en inglés

Retention and dispersion of virtual fish larvae were compared in four regions of the Mesoamerican Barrier Reef System: Gulf of Honduras, Turneffe Atoll, southern coast of Mexico (Xcalak/Chinchorro channel) and northern Chinchorro Bank. The results indicated that in the Gulf of Honduras, 20 % of the surface particles can be retained for up to 40 days, this retention was longer at 50 m depth. The area of Turneffe Atoll showed southward dispersion during November and December; whilst between Chinchorro Bank and Turneffe Atoll, it passes 70% of the released particles of the system. In Xcalak/Chinchorro channel countercurrent area, particles can be retained at the surface and at 50 m depth from September through December, and at 100 m throughout the year. In the northern system, which includes the northern Chinchorro Bankand Cozumel Island, the Yucatan Current rapidly dispersed the particles towards the Gulf of Mexico. These results were partially in agreement with previous studies of connectivity and dispersion. Our results suggest that there tention of particles in the Gulf of Honduras and Xcalak/Chinchorro channel could be higher than it was previously estimated, and that the self-recruitment rates of these two regions could be underestimated with potential population repercussions for species with a planktonic life cycle.

Tesis - Doctorado
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Conectividad de peces en el Arrecife Mesoamericano / Samuel Martínez Gómez
Martínez Gómez, Samuel (autor) ; Carrillo Bibriezca, Laura Elena (directora) ; Gasca, Rebeca (asesora) ; Marinone, S. G (asesor) ; Sosa Cordero, Eloy (asesor) ;
Chetumal, Quintana Roo, México : El Colegio de la Frontera Sur , 2019
Clasificación: TE/597.033409726 / M3
Nota: En proceso técnico. Solicítelo con el bibliotecario(a) de SIBE-Chetumal
Resumen en español

El Sistema Arrecifal Mesoamericano (SAM) es un ecosistema de relevancia económica y ecológica. Sin embargo, falta un estudio que escale la conectividad potencial (CP) entre áreas marinas protegidas (AMPs) utilizando peces que realizan agregaciones de desove sincronizadas con el ciclo lunar, no se ha utilizado la edad de flexión de la notocorda como el tiempo de dispersión larval y falta información de las regiones con retención y dispersión de larvas en el SAM. En este trabajo se realizaron simulaciones de la dispersión de larvas virtuales de Epinephelus striatus (Bloch 1792) y Lutjanus analis (Cüvier 1828), utilizando datos de corrientes superficiales del modelo global Oceanográfico de Coordenadas Hibridas (HYCOM). Se modelaron dos casos de CP, el primero en función del periodo de duración larval y el segundo en función de la edad de flexión de la notocorda. Se estimaron índices de conectividad mediante la obtención de la matriz de conectividad y la teoría de grafos (centralidad, densidad de la red, fuente/sumidero y auto-reclutamiento). Los resultados definieron cuatro zonas en función de la CP, retención y dispersión. La primera zona, Golfo de Honduras (GH), mostró auto-reclutamiento moderado, valores de centralidad intermedia, alta retención e influencia del giro del GH. La segunda zona (Belice) mostró alta tasa de auto-reclutamiento (> 20%), es fuente de larvas y funciona como puente que conecta las AMPs de México con las de Honduras. La tercera zona (Canal de Chinchorro) se caracterizó por presentar baja tasa de arribo larvario (<10%), influenciada por una contracorriente y presentó bajos valores de centralidad. La cuarta zona (norte) presentó baja tasa de auto-reclutamiento (< 1%), elevada tasa de arribo larval (10-20%), es sumidero de larvas y está influenciada por la Corriente de Yucatán. El 60 % de las larvas virtuales sigue una ruta de dispersión entre las islas de Belice, canal de Chinchorro y Cozumel.


I. Introducción
Objetivo General
Objetivos Específicos
III. Potential Connectivity Between Marine Protected Areas in the Mesoamerican Reef For Two Species of Virtual Fish Larvae: Lutjanus Analis and Epinephelus Striatus
IV. Retention and Dispersion of Virtual Fish Larvae in the Mesoamerican Reef
Material And Methods
Particle Dispersal Simulation
Dispersion of Particles in The Gulf of Hondurasdispersion of Particles in the Turneffe Island Zone
Dispersion of Particles in The Xcalak Zone
Dispersion of Particles in the Chinchorro Bank Zone
V. Discusión General
VI. Conclusión General

- Artículo con arbitraje
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Dam implications on salt-water intrusion and land use within a tropical estuarine environment of the Gulf of Mexico
Alcérreca Huerta, Juan Carlos (autor) ; Callejas Jiménez, M. E. (autor) ; Carrillo Bibriezca, Laura Elena (autor) ; Castillo, M. M. (autor) ;
Contenido en: Science of the Total Environment Vol. 652 (February 2019), p. 1102-1112 ISSN: 1879-1026
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Resumen en: Inglés |
Resumen en inglés

Estuaries are highly productive ecosystems, defined by salt-freshwater exchanges that are significantly altered by changes upstream and in adjacent coastal areas. Tropical estuaries are characterized by the periodic advance and retreat of saline intrusion, depending on seasonality, episodic river flows and flooding events. Salt-water intrusion due to the estuarine dynamics might be affected by dam systems, which could modify the hydrological regime of the estuary in relation to other stressors, such as land use changes. For this purpose, field measurements of salinity, temperature, river-discharge and flow velocities were conducted over a year to analyze the current hydrological regime in the upper estuary of the Grijalva River in the southern Gulf of Mexico, part of the Biosphere Reserve “Pantanos de Centla” one of the most biodiverse areas in the world. Analysis of land use and vegetation cover was performed. Historical implications of the hydrological performance of the four-dam system (1957 to 2014) are presented, together with the upstream-induced changes (i.e. discharge and seasonal water volumes variations): before, between and after the full operation of the dam system.

A general loss of seasonality in the river discharge was identified (1974–1987), when critical mean annual water discharges were registered (Qmean from 263.56 to 126.49 m³/s). Chronological changes in the estuary and in the surrounding area due to the introduction of large extensions of cultivated grassland (~1020 km²), reduction in mangrove cover (~223 km²) and tular (~1340 km²) were noticed. These modifications mostly occurred before conservation strategies were implemented, such as the designation of the Biosphere Reserve (1992). This study contributes to a better understanding of the response of estuarine systems to anthropic perturbations and the development of long-term management plans that could take into account climate change and the increase of hydropower development.

Resumen en: Inglés |
Resumen en inglés

Marine renewables represent a promising and innovative alternative source for satisfying the energy demands of growing populations while reducing the consumption of fossil fuels. Most technological advancements and energy yield assessments have focused on promoting the use of kinetic energy from tidal streams with flow velocities higher than 2.0 m s−1 . However, slower-moving flows from ocean currents are recently explored due to their nearly continuous and unidirectional seasonal flows. In this study, the potential of the Yucatan Current was analysed at nearshore sites over the insular shelf of Cozumel Island in the Mexican Caribbean. Field measurements were undertaken using a vessel-mounted Acoustic Doppler Current Profiler (ADCP) to analyse the spatial distribution of flow velocities, along with Conductivity-temperature-depth (CTD) profiles as well as data gathering of bathymetry and water elevations. Northward directed flow velocities were identified, with increasing velocities just before the end of the strait of the Cozumel Channel, where average velocities in the region of 0.88–1.04 m s−1 were recorded. An estimation of power delivery using horizontal axis turbines was undertaken with Blade Element Momentum theory. It was estimated that nearly 3.2 MW could be supplied to Cozumel Island, amounting to about 10% of its electricity consumption.

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Potential connectivity between marine protected areas in the Mesoamerican Reef for two species of virtual fish larvae: Lutjanus analis and Epinephelus striatus
Martínez, Samuel (autor) ; Carrillo Bibriezca, Laura Elena (autora) ; Marinone, S. Guido (autor) ;
Contenido en: Ecological Indicators Vol. 102 (July 2019), p. 10-20 ISSN: 1470-160X
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Resumen en: Inglés |
Resumen en inglés

The potential connectivity network of marine protected areas (MPAs) with spawning aggregations sites in the Mesoamerican Barrier Reef system (MBRS) was examined through simulated dispersal of two study cases, Lutjanus analis and Epinephelus striatus larvae. The analysis was based on a particle tracking model incorporating four years of daily horizontal surface currents from the global scale HYCOM 1/12°. We carried out two approaches, the first one used the period of larval duration (PLD) and the second the time of flexion of the notochord as the limit time of dispersion of the particles. Additionally, peak spawning seasons (December-Febraury for E. striatus and March-July for L. analis), lunar phases and georeferenced spawning aggregations sites were considered for releasing the virtual larvae. Our findings suggest that in general, the network of MPAs of the MBRS are well connected, however, the connectivity network structure presented variations in the relative role of each MPA, and their played role will depend on the specie reproductive period, the oceanographic conditions and the assumed biological approximation (such as PLD or flexion). Our analysis suggested a regionalization of the MBRS. A southern region (Bacalar Chico, Roatan and Sapodilla) with low degree of connectivity, moderate self-recruitment rate, and low values of betweenness centrality. A second southern region (Turneff Island, Lighthouse Atoll, Glover Reef Atoll and Gladen Spit) with high rate of self-recruitment (up to 20%) that could be related to self-recruitment due to retention mechanism of the Honduras Gyre, with high values of source of larvae, function as bridges that connect the south zone with the north of the system.

A third region (Mahahual and Xcalak) showing sink of larvae, low larval arrival rate but self-recruitment, low values of betweenness centrality area influenced by slow and variable currents and the presence of a southward flow. And a fourth region (Chinchorro, Sian Ka’an, Puerto Morelos and Cozumel) with moderate fast current speed (Yucatan Current), low self-recruitment, larval sink, bridge with the Gulf of Mexico and Florida.

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Water quality in the eastern karst region of the Yucatan Peninsula: nutrients and stable nitrogen isotopes in turtle grass, Thalassia testudinum
Camacho Cruz, Karla Andrea (autora) ; Ortíz Hernández, Ma. Concepción (autora) ; Sánchez, Alberto (autor) ; Carrillo Bibriezca, Laura Elena (autora) ; De Jesús Navarrete, Alberto (autor) ;
Disponible en línea
Contenido en: Environmental Science and Pollution Research Volumen 27 (2020), p. 15967-15983 ISSN: 0944-1344
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Resumen en: Inglés |
Resumen en inglés

Water quality in the Mexican Caribbean is affected by increases in tourism infrastructure and poor wastewater treatment. Additionally, karst geomorphology facilitates the infiltration of organic matter to subterranean water and coastal fresh water that originates from submarine groundwater discharges (SGDs), altering the environment. The tourism infrastructure grows at different rates along the Caribbean coast, characterizing zones with diverse levels of tourism impact. The aim of this work was to measure nutrient concentrations in superficial coastal water and fresh water to evaluate the water quality through different zones along a gradient from intermediate- (Riviera Maya) to low-tourism (Costa Maya) development regions. Furthermore, this study aimed to compare the measured nutrient concentrations with the Mexican ecological criteria of water quality 001/89 (CE-CCA-001/89), detect possible contributions by SGDs, and determine whether the nitrogen (N) sources are anthropogenic using stable nitrogen isotopes in the seagrass Thalassia testudinum. According to the results, nutrient concentrations (ammonium, nitrate, nitrite, and orthophosphate) differed significantly between the Riviera Maya and Costa Maya (P= 0.0001). Sites such as Shambala, Chávez, Tankah, Mahahual 2, Tulum, Akumal, and Xahuayxol exceeded the upper levels set by the CE-CCA-001/89. Tankah, Shambala, and Chávez were influenced by SGDs. The nitrogen isotope ratio in Akumal and Tulum coast water shows that they are under N loading derived to the sewage percentage ofδ¹5N in Akumal, Tulum, and Mahahual, showing that these sites suffer N loading due to sewage. Our study recommends continuous monitoring and coastal characterization to detect SGD and to regulate, treat, and dispose of sewage.

Tesis - Maestría
Aspectos oceanográficos costeros del sitio de agregación reproductiva El Blanquizal, Xcalak, Quintana Roo, México / Suleyma María Luisa Sánchez Hernández
Sánchez Hernández, Suleyma María Luisa (autora) ; Carrillo Bibriezca, Laura Elena (directora) ; Sosa Cordero, Eloy (asesor) ; Heyman, William D. (asesor) ;
Chetumal, Quintana Roo, México : El Colegio de la Frontera Sur , 2018
Clasificación: TE/551.46097267 / S2
Bibliotecas: Chetumal
SIBE Chetumal
ECO030008782 (Disponible)
Disponibles para prestamo: 1

1. Introduction
2. Materials and methods
2.1 Study area
2.2 Data collection
2.2.1 Velocity fields
2.2.2 Sea level and temperature records
2.2.3 Thermohaline structure
2.2.4 Meteorological data
2.2.5 Zooplankton samples
3. Results
3.1. Current field
3.1.1. Currents derived from vessel-mounted ADCP transects
3.1.2. Currents based on bottom-mounted (Eulerian) measurements
3.1.3. Dispersal
3.2. Sea level
3.3. Water temperature variability
3.4. Thermohaline structure
3.5. Meteorology
3.6. Zooplankton analysis
4. Discussion
5. Conclusions
Figure captions
List of Tables
Literatura Citada

- Tesis
Circulación de la Bahía del Espíritu Santo, Quintana Roo, México / Daniela Palma Lara
Palma Lara, Daniela ; Carrillo Bibriezca, Laura Elena (directora) ;
Puerto Ángel, Oaxaca, México : Universidad del Mar , 2018
Clasificación: TE/551.462097267 / P3
Bibliotecas: Campeche , Chetumal
SIBE Campeche
ECO040006925 (Disponible)
Disponibles para prestamo: 1
SIBE Chetumal
ECO030008768 (Disponible)
Disponibles para prestamo: 1

Tesis - Maestría
Estimación de la posición trófica y conectividad funcional mediada por pargos (Teleostei:Lutjanidae) en un sistema bahía-arrecife del Caribe / León Felipe Martínez Juárez
Martínez Juárez, León Felipe ; Schmitter Soto, Juan Jacobo (Director) ; Mercado Silva, Norman (asesor) ; Carrillo Bibriezca, Laura Elena (asesora) ;
Chetumal, Quintana Roo, México : El Colegio de la Frontera Sur , 2018
Clasificación: TE/597.72097267 / M3
Bibliotecas: Chetumal
SIBE Chetumal
ECO030008722 (Disponible)
Disponibles para prestamo: 1
Resumen en español

El objetivo de esta investigación fue encontrar diferencias en la dieta, posición trófica y movimientos potenciales de las especies de pargos presentes en tres ambientes del Caribe: canal Río Huach, Bahía de Chetumal-Corozal y laguna arrecifal adyacente. Empleamos isótopos estables de nitrógeno y carbono (δ15N, δ13C) en conjunto con la revisión del contenido estomacal y de la madurez gonadal. Se realizaron modelos isotópicos de mezcla para estimar la composición y origen de sus alimentos, así como evidencias de desplazamientos. Los pargos tuvieron una dieta compuesta casi en su totalidad por peces y crustáceos. Se observó una compensación en la contribución relativa por peso entre dichas presas. En los modelos de mezcla se reflejó como un aumento en el consumo de presas con un nivel trófico alto (consumidores secundarios) a costa de presas de nivel trófico bajo (consumidores primarios). Los resultados de isótopos mostraron que su dieta depende en mayor medida de los recursos de la zona en la que viven y en menor medida de la especie de pargo. Por lo anterior, los pargos se pueden considerar como mesodepredadores piscívoro-invertívoros. Lutjanus griseus y L. jocu fueron las especies más piscívoras y con posición trófica mayor, mientras que Ocyurus chrysurus tuvo una mayor dependencia en crustáceos y menor posición trófica. Sólo se encontraron evidencias de movimientos reproductivos en L. griseus, los ejemplares con gónadas próximas a desovar o desovadas tuvieron una composición isotópica distinta a la del resto de pargos del ambiente en el que fueron capturados. Observamos individuos muy pequeños de L. synagris sexualmente maduros dentro de la bahía, en lo que podrían ser agregaciones pre-reproductivas. En conjunto, las aproximaciones isotópicas y tradicionales resaltaron las diferencias en el uso de hábitat y recursos, incluyendo la conectividad funcional dada por el forrajeo y la reproducción de las especies de pargo


Palabras clave:
Capítulo introductorio
Capítulo central: manuscrito enviado a Marine Ecology Progress Series
Trophic position and functional connectivity of snappers (Teleostei: Lutjanidae) in a bay-to-reef Caribbean system
Key Words
Ecological niche studies and their approaches
Stable isotopes and mixing models approach
Coastal ecosystems, ecohydrological connectivity and nursery areas
Regional context and fish
Study area
Study design and sampling
Sample processing for Stable Isotope Analysis (SIA)
Index of Relative Importance, Vacuity Index
Stable Isotope Analysis (SIA)
Trophic position and trophic fractionation
Gonadosomatic Index
Stomach contents
Prey predominance in diet
Stable Isotope Mixing Models (SIMM)
Trophic position
Isotopic and non-isotopic evidence of recent reproductive migration
Statistical comparisons
Stomach content and relative importance
Trophic position
Functional connectivity
Reproductive migrations
Habitat use and ecological traits
Management implications
Author contributions
Literature cited
Appendix A
Appendix B
Appendix C
Electronic supplement S3
Capítulo final Literatura adicional citada en los capítulos introductorio y final
Apéndice 1
Apéndice 2
Apéndice 3