A 'perfect storm' of cumulative and acute heat stress, and a warming trend, lead to bleaching events in Tutuila, American Samoa

Smith, J.; Halperin, A.; Barkley, H.

doi:10.25923/yphg-pq04

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A 'perfect storm' of cumulative and acute heat stress, and a warming trend, lead to bleaching events in Tutuila, American Samoa

2022
By Smith, J. ; Halperin, A. ; Barkley, H.
Series: NOAA technical memorandum NMFS PIFSC ; 129

[PDF-3.28 MB]

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Personal Author:

Smith, J. ; Halperin, A. ; Barkley, H.

Smith, J. ; Halperin, A. ; Barkley, H. Less -
Corporate Authors:

Pacific Islands Fisheries Science Center (U.S.)
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; PIFSC (Pacific Islands Fisheries Science Center) ; CIMAR (Cooperative Institute for Marine and Atmospheric Research) ; CoRIS (Coral Reef Information System)

NMFS (National Marine Fisheries Service) ; PIFSC (Pacific Islands Fisheries Science Center) ; CIMAR (Cooperative Institute for Marine and Atmospheric Research) ; CoRIS (Coral Reef Information System) Less -
Description:

To better understand vertical thermal structure of reefs at depth and identify predictors of mass bleaching events using high frequency time series data, we used long-term (2012–2018) in situ temperature data collected at multiple reefs and depths around the island of Tutuila in American Samoa. Located in the central South Pacific, Tutuila is 1 of 5 volcanic islands and 2 atolls that comprise American Samoa. Lying just a few kilometers from shore, Tutuila contains shallow fringing reefs and a deep offshore bank (Birkeland et al. 2008). American Samoa experienced severe bleaching in 1994, 2003, 2015 and 2017 (Coward et al. 2020). The objectives of our study are to (1) conduct a time series analysis on in situ temperature data (2012–2018) and calculate heating metrics and (2) determine whether heating metrics predicted coral bleaching prevalence during the 2015 bleaching event.
Keywords:

[+]

Climatic Factors Coral Bleaching Corals Effect Of High Temperatures On Research
Series:

NOAA technical memorandum NMFS PIFSC ; 129
DOI:

https://doi.org/10.25923/yphg-pq04
CoRIS Project ID:

743;31282;
Document Type:

Technical Memorandum
Place as Subject:

Tutuila Island (American Samoa)
Rights Information:

Public Domain
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:532caf2528d6f3cb863ed887bab256aabd29c985f254aa6c73d72ff94e7c3986
Download URL:

https://repository.library.noaa.gov/view/noaa/44483/noaa_44483_DS1.pdf
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A 'perfect storm' of cumulative and acute heat stress, and a warming trend, lead to bleaching events in Tutuila, American Samoa

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