Coral reef recovery dynamics in a changing world

Coral Reefs ◽  
2011 ◽  
Vol 30 (2) ◽  
pp. 283-294 ◽  
Author(s):  
N. A. J. Graham ◽  
K. L. Nash ◽  
J. T. Kool
Science ◽  
2013 ◽  
Vol 340 (6128) ◽  
pp. 69-71 ◽  
Author(s):  
James P. Gilmour ◽  
Luke D. Smith ◽  
Andrew J. Heyward ◽  
Andrew H. Baird ◽  
Morgan S. Pratchett

Coral reef recovery from major disturbance is hypothesized to depend on the arrival of propagules from nearby undisturbed reefs. Therefore, reefs isolated by distance or current patterns are thought to be highly vulnerable to catastrophic disturbance. We found that on an isolated reef system in north Western Australia, coral cover increased from 9% to 44% within 12 years of a coral bleaching event, despite a 94% reduction in larval supply for 6 years after the bleaching. The initial increase in coral cover was the result of high rates of growth and survival of remnant colonies, followed by a rapid increase in juvenile recruitment as colonies matured. We show that isolated reefs can recover from major disturbance, and that the benefits of their isolation from chronic anthropogenic pressures can outweigh the costs of limited connectivity.


2006 ◽  
Vol 16 (24) ◽  
pp. 2434-2439 ◽  
Author(s):  
David R. Bellwood ◽  
Terry P. Hughes ◽  
Andrew S. Hoey

Science ◽  
2013 ◽  
Vol 340 (6128) ◽  
pp. 34-35 ◽  
Author(s):  
Beth Polidoro ◽  
Kent Carpenter
Keyword(s):  

2016 ◽  
Author(s):  
Uri Obolski ◽  
Lilach Hadany ◽  
Avigdor Abelson

Counteracting the worldwide trend of coral reef degeneration is a major challenge for the scientific community. A crucial management approach to minimizing stress effects on healthy reefs and helping the recovery of disturbed reefs is reef protection. However, the current rapid decline of the world's reefs suggests that protection might be insufficient as a viable stand-alone management approach for some reefs. We thus suggest that the ecological restoration of coral reefs (CRR) should be considered as a valid component of coral reef management, in addition to protection, if the applied method is economically applicable and scalable. This theoretical study examines the potential applicability and outcomes of restocking grazers as a restoration tool for coral reef recovery – a tool that has not been applied so far in reef restoration projects. We studied the effect of restocking grazing fish as a restoration method using a mathematical model of degrading reefs, and analyzed the financial outcomes of the restocking intervention. The results suggest that applying this restoration method, in addition to protection, can facilitate reef recovery. Moreover, our analysis suggests that the restocking approach almost always becomes profitable within several years. Considering the relatively low cost of this restoration approach and the feasibility of mass production of herbivorous fish, we suggest that this approach should be considered and examined as an additional viable restoration tool for coral reefs.


Science ◽  
2000 ◽  
Vol 289 (5478) ◽  
pp. 391b-391 ◽  
Author(s):  
C. S. Rogers

2020 ◽  
Author(s):  
Aishah Norashikin Abdul A’ziz ◽  
Fatin Izzati Minhat ◽  
Pan Hui-Juan ◽  
Hasrizal Shaari ◽  
Wan Nurzalia Wan Saelan ◽  
...  

Abstract Pulau Tioman is one of the famous tourism islands in Peninsular Malaysia due to the beautiful terrestrial and coral reefs ecosystem. This study aims to assess and monitor the health of coral reef sites surrounding Pulau Tioman based on the application of Foraminifera in Reef Assessment and Monitoring (FORAM) Index. A total of ten selected sampling sites from west and east side of Pulau Tioman were setup in front of the major beach areas around Pulau Tioman. At each site, 100 m transect was laid out from shore towards the reef slope and surface sediment samples were collected at 50 m intervals. Eight orders, 41 families, 80 genera and 161 species of benthic foraminifera were identified around Pulau Tioman. Amphistegina lessonii found to be the most dominant species and the least dominant species (< 4%) are Bolivina vadescens, Elphidium neosimplex, Heterolepa dutemplei, Heterolepa subhaidingerii, Mikrobelodontos bradyi, Milliolinella suborbicularis, Operculina discoidalis, Parahourinoides fragillissimus, Quinqueloculina incisa, Quinqueloculina sulcate, Triloculinella bertheliniana and Triloculinella parisa. The highest and lowest numbers of species was recorded at station J3 and station F3. The agglutinated type of foraminifera contributed between 2–8% of the total assemblages. Meanwhile, calcareous hyaline and porcelaneous group represent 79% and 19% of total assemblages respectively. Based on the functional groups, symbiont-bearing taxa were the most common foraminiferal found in most of the stations. The present study indicates that majority of sampling sites around Pulau Tioman are conducive for coral reef growth and could recover from any future bleaching events or temporary damage in the ecosystem. However, several areas with higher coastal development and tourism activities has reduced water quality (FI < 4) and chances of better reef recovery. Thus, the number of visitors and tourists should be revised in order to produce a better condition for coral reefs to grow. This assumption is based on the established results of the FORAM index. Thus, we suppose that FORAM index could be used together with coral reef health index in other reef ecosystems around Malaysia to determine the condition and status of coral reef area.


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