Temperature patterns and mechanisms influencing coral bleaching during the 2016 El Niño

Research output: Contribution to journalLetterpeer-review

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Temperature patterns and mechanisms influencing coral bleaching during the 2016 El Niño. / McClanahan, Tim R.; Darling, Emily S.; Maina, Joseph M.; Muthiga, Nyawira A.; ’agata, Stéphanie D.; Jupiter, Stacy D.; Arthur, Rohan; Wilson, Shaun K.; Mangubhai, Sangeeta; Nand, Yashika; Ussi, Ali M.; Humphries, Austin T.; Patankar, Vardhan J.; Guillaume, Mireille M.M.; Keith, Sally A.; Shedrawi, George; Julius, Pagu; Grimsditch, Gabriel; Ndagala, January; Leblond, Julien.

In: Nature climate change, Vol. 9, No. 11, 01.11.2019, p. 845-851.

Research output: Contribution to journalLetterpeer-review

Harvard

McClanahan, TR, Darling, ES, Maina, JM, Muthiga, NA, ’agata, SD, Jupiter, SD, Arthur, R, Wilson, SK, Mangubhai, S, Nand, Y, Ussi, AM, Humphries, AT, Patankar, VJ, Guillaume, MMM, Keith, SA, Shedrawi, G, Julius, P, Grimsditch, G, Ndagala, J & Leblond, J 2019, 'Temperature patterns and mechanisms influencing coral bleaching during the 2016 El Niño', Nature climate change, vol. 9, no. 11, pp. 845-851. https://doi.org/10.1038/s41558-019-0576-8

APA

McClanahan, T. R., Darling, E. S., Maina, J. M., Muthiga, N. A., ’agata, S. D., Jupiter, S. D., Arthur, R., Wilson, S. K., Mangubhai, S., Nand, Y., Ussi, A. M., Humphries, A. T., Patankar, V. J., Guillaume, M. M. M., Keith, S. A., Shedrawi, G., Julius, P., Grimsditch, G., Ndagala, J., & Leblond, J. (2019). Temperature patterns and mechanisms influencing coral bleaching during the 2016 El Niño. Nature climate change, 9(11), 845-851. https://doi.org/10.1038/s41558-019-0576-8

Vancouver

McClanahan TR, Darling ES, Maina JM, Muthiga NA, ’agata SD, Jupiter SD et al. Temperature patterns and mechanisms influencing coral bleaching during the 2016 El Niño. Nature climate change. 2019 Nov 1;9(11):845-851. https://doi.org/10.1038/s41558-019-0576-8

Author

McClanahan, Tim R. ; Darling, Emily S. ; Maina, Joseph M. ; Muthiga, Nyawira A. ; ’agata, Stéphanie D. ; Jupiter, Stacy D. ; Arthur, Rohan ; Wilson, Shaun K. ; Mangubhai, Sangeeta ; Nand, Yashika ; Ussi, Ali M. ; Humphries, Austin T. ; Patankar, Vardhan J. ; Guillaume, Mireille M.M. ; Keith, Sally A. ; Shedrawi, George ; Julius, Pagu ; Grimsditch, Gabriel ; Ndagala, January ; Leblond, Julien. / Temperature patterns and mechanisms influencing coral bleaching during the 2016 El Niño. In: Nature climate change. 2019 ; Vol. 9, No. 11. pp. 845-851.

Bibtex

@article{1f2b054162f54ff4a2a74fd1d7e9dab7,
title = "Temperature patterns and mechanisms influencing coral bleaching during the 2016 El Ni{\~n}o",
abstract = "Under extreme heat stress, corals expel their symbiotic algae and colour (that is, {\textquoteleft}bleaching{\textquoteright}), which often leads to widespread mortality. Predicting the large-scale environmental conditions that reinforce or mitigate coral bleaching remains unresolved and limits strategic conservation actions1,2. Here we assessed coral bleaching at 226 sites and 26 environmental variables that represent different mechanisms of stress responses from East Africa to Fiji through a coordinated effort to evaluate the coral response to the 2014–2016 El Ni{\~n}o/Southern Oscillation thermal anomaly. We applied common time-series methods to study the temporal patterning of acute thermal stress and evaluated the effectiveness of conventional and new sea surface temperature metrics and mechanisms in predicting bleaching severity. The best models indicated the importance of peak hot temperatures, the duration of cool temperatures and temperature bimodality, which explained ~50% of the variance, compared to the common degree-heating week temperature index that explained only 9%. Our findings suggest that the threshold concept as a mechanism to explain bleaching alone was not as powerful as the multidimensional interactions of stresses, which include the duration and temporal patterning of hot and cold temperature extremes relative to average local conditions.",
author = "McClanahan, {Tim R.} and Darling, {Emily S.} and Maina, {Joseph M.} and Muthiga, {Nyawira A.} and {\textquoteright}agata, {St{\'e}phanie D.} and Jupiter, {Stacy D.} and Rohan Arthur and Wilson, {Shaun K.} and Sangeeta Mangubhai and Yashika Nand and Ussi, {Ali M.} and Humphries, {Austin T.} and Patankar, {Vardhan J.} and Guillaume, {Mireille M.M.} and Keith, {Sally A.} and George Shedrawi and Pagu Julius and Gabriel Grimsditch and January Ndagala and Julien Leblond",
year = "2019",
month = nov,
day = "1",
doi = "10.1038/s41558-019-0576-8",
language = "English",
volume = "9",
pages = "845--851",
journal = "Nature Climate Change",
issn = "1758-678X",
publisher = "nature publishing group",
number = "11",

}

RIS

TY - JOUR

T1 - Temperature patterns and mechanisms influencing coral bleaching during the 2016 El Niño

AU - McClanahan, Tim R.

AU - Darling, Emily S.

AU - Maina, Joseph M.

AU - Muthiga, Nyawira A.

AU - ’agata, Stéphanie D.

AU - Jupiter, Stacy D.

AU - Arthur, Rohan

AU - Wilson, Shaun K.

AU - Mangubhai, Sangeeta

AU - Nand, Yashika

AU - Ussi, Ali M.

AU - Humphries, Austin T.

AU - Patankar, Vardhan J.

AU - Guillaume, Mireille M.M.

AU - Keith, Sally A.

AU - Shedrawi, George

AU - Julius, Pagu

AU - Grimsditch, Gabriel

AU - Ndagala, January

AU - Leblond, Julien

PY - 2019/11/1

Y1 - 2019/11/1

N2 - Under extreme heat stress, corals expel their symbiotic algae and colour (that is, ‘bleaching’), which often leads to widespread mortality. Predicting the large-scale environmental conditions that reinforce or mitigate coral bleaching remains unresolved and limits strategic conservation actions1,2. Here we assessed coral bleaching at 226 sites and 26 environmental variables that represent different mechanisms of stress responses from East Africa to Fiji through a coordinated effort to evaluate the coral response to the 2014–2016 El Niño/Southern Oscillation thermal anomaly. We applied common time-series methods to study the temporal patterning of acute thermal stress and evaluated the effectiveness of conventional and new sea surface temperature metrics and mechanisms in predicting bleaching severity. The best models indicated the importance of peak hot temperatures, the duration of cool temperatures and temperature bimodality, which explained ~50% of the variance, compared to the common degree-heating week temperature index that explained only 9%. Our findings suggest that the threshold concept as a mechanism to explain bleaching alone was not as powerful as the multidimensional interactions of stresses, which include the duration and temporal patterning of hot and cold temperature extremes relative to average local conditions.

AB - Under extreme heat stress, corals expel their symbiotic algae and colour (that is, ‘bleaching’), which often leads to widespread mortality. Predicting the large-scale environmental conditions that reinforce or mitigate coral bleaching remains unresolved and limits strategic conservation actions1,2. Here we assessed coral bleaching at 226 sites and 26 environmental variables that represent different mechanisms of stress responses from East Africa to Fiji through a coordinated effort to evaluate the coral response to the 2014–2016 El Niño/Southern Oscillation thermal anomaly. We applied common time-series methods to study the temporal patterning of acute thermal stress and evaluated the effectiveness of conventional and new sea surface temperature metrics and mechanisms in predicting bleaching severity. The best models indicated the importance of peak hot temperatures, the duration of cool temperatures and temperature bimodality, which explained ~50% of the variance, compared to the common degree-heating week temperature index that explained only 9%. Our findings suggest that the threshold concept as a mechanism to explain bleaching alone was not as powerful as the multidimensional interactions of stresses, which include the duration and temporal patterning of hot and cold temperature extremes relative to average local conditions.

U2 - 10.1038/s41558-019-0576-8

DO - 10.1038/s41558-019-0576-8

M3 - Letter

AN - SCOPUS:85074249943

VL - 9

SP - 845

EP - 851

JO - Nature Climate Change

JF - Nature Climate Change

SN - 1758-678X

IS - 11

ER -

ID: 230201600