N. GBR - Green (AULK30)

Khaled bin Sultan Living Oceans Foundation — Global Reef Expedition

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Part of the regional summaries: Australia (GBR) - Far North: Green stations (no-take reefs) and Australia (GBR)

Country

Australia

Survey date(s)

2014-09-07

Coordinates

-15.3100, 145.5800

Coral cover

1.8%

Benthic transects+photo-quadrats

Observations

not yet tagged for this site

Heat stress

Today’s heat load

24.8°C 0.0°C-weeks

3 Oct 2026 · No heat stress

5-year thermal stress load

5-year mean max. degree heating weeks (DHW)

7.8°C-weeksⁱ

2021–2025

NOAA Coral Reef Watch — Northern GBR virtual station

i 5-year mean max. DHW is the mean of the annual maximum DHWs over the five complete years named above, not conditions today.

More info

Northern GBR (NOAA CRW virtual station)

Survey depth (expedition team)

7 m

Living Oceans Foundation (LOF) benthic survey depth; no dive by Anderson at this station

Sea surface temp. (satellite)

24.5°C

satellite sea surface temperature (SST) on the survey date (NOAA Coral Reef Watch, Northern GBR), not an in-water reading; it is the warmest-pixel (90th percentile) reading in the station area and can run 1–1.5°C above the reef

Four other CRD dive sites within 5 km shown in orange — click a marker to open its page.

🗺 Detailed map of the Global Reef Expedition dive sites, Lark, Williamson, and unnamed reef 15-043, northern Great Barrier Reef (Khaled bin Sultan Living Oceans Foundation; opens in a new window)

Site description

Setting

Global Reef Expedition station AULK30 on Lark Reef, northern Great Barrier Reef (-15.3100, 145.5800), surveyed on 7 September 2014, in a Marine National Park (Green) Zone.

Coral cover

Reference: Khaled bin Sultan Living Oceans Foundation, Global Reef Expedition (in situ transect)
The in situ benthic transects recorded 1.8% live coral cover against an 86% algal fraction at a survey depth of 7.0 m.
That transect value is the authoritative cover figure for this site, and no photographs exist for the site.

Stressors

Regional context only: surveyed about eighteen months before the 2016 mass bleaching, in a sector it hit severely; 5-year mean annual maximum thermal stress at the Northern GBR virtual station is 7.8 degree heating weeks.

Comparisons with other data

No prior survey data from this site. If you would like to share yours, please email us.

Data & links

Data are from the Khaled bin Sultan Living Oceans Foundation Global Reef Expedition and Coral Reef Diagnostics.