Nuestro objetivo es desarrollar diversas publicaciones científicas que destaquen nuestro compromiso con la conservación de nuestros recursos marinos.
La mayoría de las publicaciones están disponibles gratuitamente en nuestro sitio web.
2017
Alpert, Alice E.; Cohen, Anne L.; Oppo, Delia W.; DeCarlo, Thomas M.; Gaetani, Glenn A.; Hernandez-Delgado, Edwin A.; Winter, Amos; Gonneea, Meagan E.
Twentieth century warming of the tropical Atlantic captured by Sr-U paleothermometry Journal Article
In: Paleoceanography and Paleoclimatology, vol. 32, iss. 2, pp. 146-160, 2017.
Abstract | Links | BibTeX | Tags: Atlantic and Pacific Corals, Climate Reconstruction, Coral Paleothermometry, Coral Reef Studies, Coral Skeletons, Mona Island, Multispecies Calibration, Multiyear Variability, Ocean Conditions Archive, Past Ocean Temperatures, Puerto Rico, Rayleigh Fractionation, Sr-U Thermometer, Sr/Ca Ratio, Twentieth Century Warming, U/Ca Ratio
@article{Alpert2017,
title = {Twentieth century warming of the tropical Atlantic captured by Sr-U paleothermometry},
author = {Alice E. Alpert and Anne L. Cohen and Delia W. Oppo and Thomas M. DeCarlo and Glenn A. Gaetani and Edwin A. Hernandez-Delgado and Amos Winter and Meagan E. Gonneea},
url = {https://sampr.org/alpert-et-al-2017-20th-century-warming-atlantic-sr-u-paleothermometry/
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2016pa002976
},
doi = {https://doi.org/10.1002/2016PA002976},
year = {2017},
date = {2017-01-26},
urldate = {2016-01-26},
journal = {Paleoceanography and Paleoclimatology},
volume = {32},
issue = {2},
pages = {146-160},
abstract = {Coral skeletons are valuable archives of past ocean conditions. However, interpretation of coral paleotemperature records is confounded by uncertainties associated with single-element ratio thermometers, including Sr/Ca. A new approach, Sr-U, uses U/Ca to constrain the influence of Rayleigh fractionation on Sr/Ca. Here we build on the initial Pacific Porites Sr-U calibration to include multiple Atlantic and Pacific coral genera from multiple coral reef locations spanning a temperature range of 23.15–30.12°C.
Accounting for the wintertime growth cessation of one Bermuda coral, we show that Sr-U is strongly correlated with the average water temperature at each location (r² = 0.91, P < 0.001, n = 19). We applied the multispecies spatial calibration between Sr-U and temperature to reconstruct a 96-year long temperature record at Mona Island, Puerto Rico, using a coral not included in the calibration. Average Sr-U derived temperature for the period 1900–1996 is within 0.12°C of the average instrumental temperature at this site and captures the twentieth-century warming trend of 0.06°C per decade. Sr-U also captures the timing of multiyear variability but with higher amplitude than implied by the instrumental data.
Mean Sr-U temperatures and patterns of multiyear variability were replicated in a second coral in the same grid box. Conversely, Sr/Ca records from the same two corals were inconsistent with each other and failed to capture absolute sea temperatures, timing of multiyear variability, or the twentieth-century warming trend. Our results suggest that coral Sr-U paleothermometry is a promising new tool for reconstruction of past ocean temperatures.},
keywords = {Atlantic and Pacific Corals, Climate Reconstruction, Coral Paleothermometry, Coral Reef Studies, Coral Skeletons, Mona Island, Multispecies Calibration, Multiyear Variability, Ocean Conditions Archive, Past Ocean Temperatures, Puerto Rico, Rayleigh Fractionation, Sr-U Thermometer, Sr/Ca Ratio, Twentieth Century Warming, U/Ca Ratio},
pubstate = {published},
tppubtype = {article}
}
Coral skeletons are valuable archives of past ocean conditions. However, interpretation of coral paleotemperature records is confounded by uncertainties associated with single-element ratio thermometers, including Sr/Ca. A new approach, Sr-U, uses U/Ca to constrain the influence of Rayleigh fractionation on Sr/Ca. Here we build on the initial Pacific Porites Sr-U calibration to include multiple Atlantic and Pacific coral genera from multiple coral reef locations spanning a temperature range of 23.15–30.12°C.
Accounting for the wintertime growth cessation of one Bermuda coral, we show that Sr-U is strongly correlated with the average water temperature at each location (r² = 0.91, P < 0.001, n = 19). We applied the multispecies spatial calibration between Sr-U and temperature to reconstruct a 96-year long temperature record at Mona Island, Puerto Rico, using a coral not included in the calibration. Average Sr-U derived temperature for the period 1900–1996 is within 0.12°C of the average instrumental temperature at this site and captures the twentieth-century warming trend of 0.06°C per decade. Sr-U also captures the timing of multiyear variability but with higher amplitude than implied by the instrumental data.
Mean Sr-U temperatures and patterns of multiyear variability were replicated in a second coral in the same grid box. Conversely, Sr/Ca records from the same two corals were inconsistent with each other and failed to capture absolute sea temperatures, timing of multiyear variability, or the twentieth-century warming trend. Our results suggest that coral Sr-U paleothermometry is a promising new tool for reconstruction of past ocean temperatures.
Accounting for the wintertime growth cessation of one Bermuda coral, we show that Sr-U is strongly correlated with the average water temperature at each location (r² = 0.91, P < 0.001, n = 19). We applied the multispecies spatial calibration between Sr-U and temperature to reconstruct a 96-year long temperature record at Mona Island, Puerto Rico, using a coral not included in the calibration. Average Sr-U derived temperature for the period 1900–1996 is within 0.12°C of the average instrumental temperature at this site and captures the twentieth-century warming trend of 0.06°C per decade. Sr-U also captures the timing of multiyear variability but with higher amplitude than implied by the instrumental data.
Mean Sr-U temperatures and patterns of multiyear variability were replicated in a second coral in the same grid box. Conversely, Sr/Ca records from the same two corals were inconsistent with each other and failed to capture absolute sea temperatures, timing of multiyear variability, or the twentieth-century warming trend. Our results suggest that coral Sr-U paleothermometry is a promising new tool for reconstruction of past ocean temperatures.
2014
Hernández-Delgado, Edwin A.; González-Ramos, Carmen M.; Alejandro-Camis, Pedro J.
In: Revista Biologia Tropical, vol. Vol. 62, no. Supl.3, pp. 49-64, 2014, ISSN: 0034-7744.
Abstract | Links | BibTeX | Tags: Climate change, community trajectory, coral decline, coral recruitment, Mona Island, Puerto Rico, transitional state
@article{Hernández-Delgado2014f,
title = {Large-scale coral recruitment patterns on Mona Island, Puerto Rico: evidence of a transitional community trajectory after massive coral bleaching and mortality},
author = {Edwin A. Hernández-Delgado and Carmen M. González-Ramos and Pedro J. Alejandro-Camis},
url = {https://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442014000700012
https://revistas.ucr.ac.cr/index.php/rbt/article/view/15901
https://sampr.org/wp-content/uploads/2023/12/Large-scale-coral-recruitment-patterns-on-Mona-Island-Puerto-Rico-evidence-of-a-transitional-community-trajectory-after-massive-coral-bleaching-and-mortality.pdf},
doi = {https://doi.org/10.15517/rbt.v62i0.15901},
issn = {0034-7744},
year = {2014},
date = {2014-09-01},
urldate = {2014-09-01},
journal = {Revista Biologia Tropical},
volume = {Vol. 62},
number = {Supl.3},
pages = {49-64},
abstract = {Coral reefs have largely declined across the northeastern Caribbean following the 2005 massive bleaching event. Climate change-related sea surface warming and coral disease outbreaks of a white plague-like syndrome and of yellow band disease (YBD) have caused significant coral decline affecting massive reef building species (i.e., Orbicella annularis species complex) which show no apparent signs of recovery through larval sexual recruitment. We addressed coral recruit densities across three spur and groove reef locations along the western shelf of remote Mona Island, Puerto Rico: Punta Capitán (PCA), Pasa de Las Carmelitas (PLC), and Las Carmelitas-South (LCS). Data were collected during November 2012 along 93 haphazard transects across three depth zones (<5m, 5-10m, 10-15m). A total of 32 coral species (9 octocorals, 1 hydrocoral, 22 scleractinians) were documented among the recruit community. Communities had low densities and dominance by short-lived brooder species seven years after the 2005 event. Mean coral recruit density ranged from 1.2 to 10.5/m2 at PCA, 6.3 to 7.2/m2 at LCS, 4.5 to 9.5/m2 at PLC. Differences in coral recruit community structure can be attributed to slight variation in percent macroalgal cover and composition as study sites had nearly similar benthic spatial heterogeneity. Dominance by ephemeral coral species was widespread. Recovery of largely declining massive reef-building species such as the O. annularis species complex was limited or non-existent. The lack of recovery could be the combined result of several mechanisms involving climate change, YBD disease, macroalgae, fishing, urchins and Mona Island’s reefs limited connectivity to other reef systems. There is also for rehabilitation of fish trophic structure, with emphasis in recovering herbivore guilds and depleted populations of D. antillarum. Failing to recognize the importance of ecosystem-based management and resilience rehabilitation may deem remote coral reefs recovery unlikely.},
keywords = {Climate change, community trajectory, coral decline, coral recruitment, Mona Island, Puerto Rico, transitional state},
pubstate = {published},
tppubtype = {article}
}
Coral reefs have largely declined across the northeastern Caribbean following the 2005 massive bleaching event. Climate change-related sea surface warming and coral disease outbreaks of a white plague-like syndrome and of yellow band disease (YBD) have caused significant coral decline affecting massive reef building species (i.e., Orbicella annularis species complex) which show no apparent signs of recovery through larval sexual recruitment. We addressed coral recruit densities across three spur and groove reef locations along the western shelf of remote Mona Island, Puerto Rico: Punta Capitán (PCA), Pasa de Las Carmelitas (PLC), and Las Carmelitas-South (LCS). Data were collected during November 2012 along 93 haphazard transects across three depth zones (<5m, 5-10m, 10-15m). A total of 32 coral species (9 octocorals, 1 hydrocoral, 22 scleractinians) were documented among the recruit community. Communities had low densities and dominance by short-lived brooder species seven years after the 2005 event. Mean coral recruit density ranged from 1.2 to 10.5/m2 at PCA, 6.3 to 7.2/m2 at LCS, 4.5 to 9.5/m2 at PLC. Differences in coral recruit community structure can be attributed to slight variation in percent macroalgal cover and composition as study sites had nearly similar benthic spatial heterogeneity. Dominance by ephemeral coral species was widespread. Recovery of largely declining massive reef-building species such as the O. annularis species complex was limited or non-existent. The lack of recovery could be the combined result of several mechanisms involving climate change, YBD disease, macroalgae, fishing, urchins and Mona Island’s reefs limited connectivity to other reef systems. There is also for rehabilitation of fish trophic structure, with emphasis in recovering herbivore guilds and depleted populations of D. antillarum. Failing to recognize the importance of ecosystem-based management and resilience rehabilitation may deem remote coral reefs recovery unlikely.