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Maldives: coral building in Malé and two reef studies
Malé’s Friday Mosque shows coral used as building stone. At Hanifaru Bay, reef shape and tides concentrate plankton; a separate study compared five shallow Gaafu Dhaalu reef sites before and after the 2016 warming event.
At a glance
- Modelled feeding threshold in the 2021 Hanifaru study
- Estimated critical prey density: 53.7 mg dry mass of zooplankton per cubic metre (modelled feeding proportion 0.5).[4]
- Reef growth potential in Gaafu Dhaalu, 2016
- Estimated mean reef-growth potential: 4.2 mm/year before bleaching; −0.4 mm/year afterward.[5]
- Malé Friday Mosque
- The 1658 date marks the mosque’s completion; the entry dates its minaret to 1674 and identifies coral stone as the main building material.[1]
A place worth remembering
Malé: coral stone shaped for a mosque
The Maldives’ 2013 UNESCO Tentative List submission dates Malé’s present Friday Mosque to 1658. It replaced an earlier building, with shaped coral stone and carved timber defining the complex; the entry dates the minaret to 1674.[1]
Hanifaru Bay: currents concentrate prey
The IUCN factsheet describes Hanifaru as a reef inlet on Baa Atoll’s eastern edge. During the southwest monsoon, strong lunar tides can push against the prevailing current and draw plankton-rich water through the channel, while the inlet’s shape traps it. In their 2021 study, Armstrong and colleagues modelled feeding against zooplankton density; their estimated critical threshold was 53.7 mg dry mass per cubic metre, where the modelled proportion of feeding observations reached 0.5.[3][4]
Gaafu Dhaalu: shallow reefs shifted toward erosion
Perry and Morgan measured coral production and bioerosion on fore-reef slopes at 2 m across five locations inside Gaafu Dhaalu Atoll, in January and September 2016. From these biological carbonate-budget measurements, they estimated that mean reef-growth potential shifted from 4.2 to −0.4 mm per year after bleaching. This is a study estimate of growth potential, not a direct measurement of upward reef-surface movement.[5]
Good to know
A few clear answers before you explore.
How do the reef studies differ?
The Hanifaru work links prey concentration to feeding behaviour, whereas the Gaafu Dhaalu study compares shallow-reef carbonate growth before and after the 2016 warming event.[4][5]
What does the IUCN factsheet mean by cyclone feeding?
The factsheet reports a rotating circle of rays that draws plankton-rich water inward; observations included groups of as many as 150 rays and events lasting up to 30 minutes.[3]
What is the Friday Mosque’s UNESCO status?
The UNESCO country page lists no inscribed properties. Its 2013 submission names Malé’s Friday Mosque within a proposed serial group of coral-stone mosques; a Tentative List entry is a State Party’s inventory of properties it may consider for nomination.[2][1]
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