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Wave exposure shapes reef community composition and recovery trajectories at a remote coral atoll

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Wave exposure shapes reef community composition and recovery trajectories at a remote coral atoll. / Lange, I.D.; Benkwitt, C.E.; McDevitt-Irwin, J.M.; Tietjen, K.L.; Taylor, B.; Chinkin, M.; Gunn, R.L.; Palmisciano, M.; Steyaert, M.; Wilson, B.; East, H.K.; Turner, J.; Graham, N.A.J.; Perry, C.T.

In: Coral Reefs, Vol. 40, No. 6, 31.12.2021, p. 1819-1829.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Lange, ID, Benkwitt, CE, McDevitt-Irwin, JM, Tietjen, KL, Taylor, B, Chinkin, M, Gunn, RL, Palmisciano, M, Steyaert, M, Wilson, B, East, HK, Turner, J, Graham, NAJ & Perry, CT 2021, 'Wave exposure shapes reef community composition and recovery trajectories at a remote coral atoll', Coral Reefs, vol. 40, no. 6, pp. 1819-1829. https://doi.org/10.1007/s00338-021-02184-w

APA

Lange, I. D., Benkwitt, C. E., McDevitt-Irwin, J. M., Tietjen, K. L., Taylor, B., Chinkin, M., Gunn, R. L., Palmisciano, M., Steyaert, M., Wilson, B., East, H. K., Turner, J., Graham, N. A. J., & Perry, C. T. (2021). Wave exposure shapes reef community composition and recovery trajectories at a remote coral atoll. Coral Reefs, 40(6), 1819-1829. https://doi.org/10.1007/s00338-021-02184-w

Vancouver

Lange ID, Benkwitt CE, McDevitt-Irwin JM, Tietjen KL, Taylor B, Chinkin M et al. Wave exposure shapes reef community composition and recovery trajectories at a remote coral atoll. Coral Reefs. 2021 Dec 31;40(6):1819-1829. https://doi.org/10.1007/s00338-021-02184-w

Author

Lange, I.D. ; Benkwitt, C.E. ; McDevitt-Irwin, J.M. ; Tietjen, K.L. ; Taylor, B. ; Chinkin, M. ; Gunn, R.L. ; Palmisciano, M. ; Steyaert, M. ; Wilson, B. ; East, H.K. ; Turner, J. ; Graham, N.A.J. ; Perry, C.T. / Wave exposure shapes reef community composition and recovery trajectories at a remote coral atoll. In: Coral Reefs. 2021 ; Vol. 40, No. 6. pp. 1819-1829.

Bibtex

@article{94d20b26e0f94788a91b5fabd82733e4,
title = "Wave exposure shapes reef community composition and recovery trajectories at a remote coral atoll",
abstract = "In a time of unprecedented ecological change, understanding natural biophysical relationships between reef resilience and physical drivers is of increasing importance. This study evaluates how wave forcing structures coral reef benthic community composition and recovery trajectories after the major 2015/2016 bleaching event in the remote Chagos Archipelago, Indian Ocean. Benthic cover and substrate rugosity were quantified from digital imagery at 23 fore reef sites around a small coral atoll (Salomon) in 2020 and compared to data from a similar survey in 2006 and opportunistic surveys in intermediate years. Cluster analysis and principal component analysis show strong separation of community composition between exposed (modelled wave exposure > 1000 J m−3) and sheltered sites (< 1000 J m−3) in 2020. This difference is driven by relatively high cover of Porites sp., other massive corals, encrusting corals, soft corals, rubble and dead table corals at sheltered sites versus high cover of pavement and sponges at exposed sites. Total coral cover and rugosity were also higher at sheltered sites. Adding data from previous years shows benthic community shifts from distinct exposure-driven assemblages and high live coral cover in 2006 towards bare pavement, dead Acropora tables and rubble after the 2015/2016 bleaching event. The subsequent recovery trajectories at sheltered and exposed sites are surprisingly parallel and lead communities towards their respective pre-bleaching communities. These results demonstrate that in the absence of human stressors, community patterns on fore reefs are strongly controlled by wave exposure, even during and after widespread coral loss from bleaching events. ",
keywords = "Biophysical coupling, Community composition, Recovery trajectory, Remote coral reef, Wave exposure",
author = "I.D. Lange and C.E. Benkwitt and J.M. McDevitt-Irwin and K.L. Tietjen and B. Taylor and M. Chinkin and R.L. Gunn and M. Palmisciano and M. Steyaert and B. Wilson and H.K. East and J. Turner and N.A.J. Graham and C.T. Perry",
year = "2021",
month = dec,
day = "31",
doi = "10.1007/s00338-021-02184-w",
language = "English",
volume = "40",
pages = "1819--1829",
journal = "Coral Reefs",
issn = "0722-4028",
publisher = "Springer Science and Business Media Deutschland GmbH",
number = "6",

}

RIS

TY - JOUR

T1 - Wave exposure shapes reef community composition and recovery trajectories at a remote coral atoll

AU - Lange, I.D.

AU - Benkwitt, C.E.

AU - McDevitt-Irwin, J.M.

AU - Tietjen, K.L.

AU - Taylor, B.

AU - Chinkin, M.

AU - Gunn, R.L.

AU - Palmisciano, M.

AU - Steyaert, M.

AU - Wilson, B.

AU - East, H.K.

AU - Turner, J.

AU - Graham, N.A.J.

AU - Perry, C.T.

PY - 2021/12/31

Y1 - 2021/12/31

N2 - In a time of unprecedented ecological change, understanding natural biophysical relationships between reef resilience and physical drivers is of increasing importance. This study evaluates how wave forcing structures coral reef benthic community composition and recovery trajectories after the major 2015/2016 bleaching event in the remote Chagos Archipelago, Indian Ocean. Benthic cover and substrate rugosity were quantified from digital imagery at 23 fore reef sites around a small coral atoll (Salomon) in 2020 and compared to data from a similar survey in 2006 and opportunistic surveys in intermediate years. Cluster analysis and principal component analysis show strong separation of community composition between exposed (modelled wave exposure > 1000 J m−3) and sheltered sites (< 1000 J m−3) in 2020. This difference is driven by relatively high cover of Porites sp., other massive corals, encrusting corals, soft corals, rubble and dead table corals at sheltered sites versus high cover of pavement and sponges at exposed sites. Total coral cover and rugosity were also higher at sheltered sites. Adding data from previous years shows benthic community shifts from distinct exposure-driven assemblages and high live coral cover in 2006 towards bare pavement, dead Acropora tables and rubble after the 2015/2016 bleaching event. The subsequent recovery trajectories at sheltered and exposed sites are surprisingly parallel and lead communities towards their respective pre-bleaching communities. These results demonstrate that in the absence of human stressors, community patterns on fore reefs are strongly controlled by wave exposure, even during and after widespread coral loss from bleaching events. 

AB - In a time of unprecedented ecological change, understanding natural biophysical relationships between reef resilience and physical drivers is of increasing importance. This study evaluates how wave forcing structures coral reef benthic community composition and recovery trajectories after the major 2015/2016 bleaching event in the remote Chagos Archipelago, Indian Ocean. Benthic cover and substrate rugosity were quantified from digital imagery at 23 fore reef sites around a small coral atoll (Salomon) in 2020 and compared to data from a similar survey in 2006 and opportunistic surveys in intermediate years. Cluster analysis and principal component analysis show strong separation of community composition between exposed (modelled wave exposure > 1000 J m−3) and sheltered sites (< 1000 J m−3) in 2020. This difference is driven by relatively high cover of Porites sp., other massive corals, encrusting corals, soft corals, rubble and dead table corals at sheltered sites versus high cover of pavement and sponges at exposed sites. Total coral cover and rugosity were also higher at sheltered sites. Adding data from previous years shows benthic community shifts from distinct exposure-driven assemblages and high live coral cover in 2006 towards bare pavement, dead Acropora tables and rubble after the 2015/2016 bleaching event. The subsequent recovery trajectories at sheltered and exposed sites are surprisingly parallel and lead communities towards their respective pre-bleaching communities. These results demonstrate that in the absence of human stressors, community patterns on fore reefs are strongly controlled by wave exposure, even during and after widespread coral loss from bleaching events. 

KW - Biophysical coupling

KW - Community composition

KW - Recovery trajectory

KW - Remote coral reef

KW - Wave exposure

U2 - 10.1007/s00338-021-02184-w

DO - 10.1007/s00338-021-02184-w

M3 - Journal article

VL - 40

SP - 1819

EP - 1829

JO - Coral Reefs

JF - Coral Reefs

SN - 0722-4028

IS - 6

ER -