Porites

Pichon, Michel

doi:10.1007/978-90-481-2639-2_273

Cited by 5 publications

(4 citation statements)

References 18 publications

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“…The distribution patterns of massive and tabular corals are similar to those in other Indo‐Pacific regions [ Montaggioni and Braithwaite , 2009; Nakamura and Nakamori , 2009; Pichon , 2011]. This implies that the scenario we have developed for Ibaruma reef is likely to be representative of the region as a whole, although the intensities of typhoons may vary in different areas.…”

Section: Discussionsupporting

confidence: 72%

Catastrophic impact of typhoon waves on coral communities in the Ryukyu Islands under global warming

Hongo¹,

Kawamata²,

Goto³

2012

J. Geophys. Res.

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[1] Typhoon-generated storm waves generally cause mechanical damage to coral communities on present-day reefs, and the magnitude and extent of damage is predicted to increase in the near future as a result of global warming. Therefore, a comprehensive understanding of potential future scenarios of reef ecosystems is of prime interest. This study assesses the current status of coral communities on Ibaruma reef, Ryukyu Islands, on the basis of field observations, engineering and fluid dynamic models, and calculations of wave motion, and predicts the potential effects of a super-extreme typhoon (incident wave height, H = 20 m; wave period, T = 20 s) on the reef. On the present-day reef, massive corals occur in shallow lagoons and tabular corals occur from the reef crest to the reef slope. The observed distribution of corals, which is frequently attacked by moderate (H = 10 m, T = 10 s) and extreme (H = 10 m, T = 15 s) typhoons, is consistent with the predictions of engineering models. Moreover, this study indicates that if a super-extreme typhoon attacks the reef in the near future, massive corals will survive in the shallow lagoons but tabular corals on the reef crest and reef slope will be severely impacted. The findings imply that super-extreme typhoons will cause a loss of species diversity, as the tabular corals are important reef builders and are critical to the maintenance of reef ecosystems. Consequently, reef restoration is a key approach to maintaining reef ecosystems in the wake of super-extreme typhoons.

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Section: Discussionsupporting

confidence: 72%

Catastrophic impact of typhoon waves on coral communities in the Ryukyu Islands under global warming

Hongo¹,

Kawamata²,

Goto³

2012

J. Geophys. Res.

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“…This makes Porites less prone to bleaching than Acropora (Hoegh-Guldberg and Salvat 1995). At high suspended sediment Porites colonies can survive by removing sediment with their own cleaning mechanism (Pichon 2011). Therefore, it can be assumed that dominance and abundance of Porites in Weh island is caused by the changing of the environment due to global warming and the increase of human activities in that area…”

Section: Discussionmentioning

confidence: 99%

Recent coral reef conditions in Weh Island, Aceh Province, Indonesia

Utama

Hadi

2018

Indo Pac J Ocean Life

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Abstract. Utama RS, Hadi TA. 2018. Recent coral reef conditions in Weh Island, Aceh Province, Indonesia. Ocean Life 2: 47-53. Over the past several decades the coral reef conditions have been declining globally due to human activities and natural disturbances. In the last decade, several natural phenomena such as a 2010 tsunami and 2016 coral bleaching event have been recorded in Weh Island and resulted in coral cover decline. The aims of this study are to observe current status of coral diversity and reef conditions at Weh Island. The study was carried out during February 2017 at ten study sites. The methods used were Underwater Photo Transect (UPT) analyzed with CPCe 4.1. software. Live coral coverage ranging from 10% to 57,33% with average live coral cover at Weh island at 28.48% ± 5.334 (moderate condition). 82 species, 31 genera, 13 families of coral were recorded in this study with four species found at all sites. No take and no anchor zones from Panglima Laot regulation at the Iboih areas provide a positive impact for maintaining coral health.

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“…Previous studies done on extinct and extant Porites species have found an average from 5-10 corallites best represent the colony by tempering the variability among single corallites (Foster 1986;Weil, 1992;Loṕez-Peŕez 2013;Gonzaĺez-Espinosa et al, 2018;Tisthammer and Richmond, 2018). We selected only mature corallites and avoided the smallest corallites as they could be new corallites recently formed by extratentacular budding (Pichon, 2011) or broken corallites that would give imprecise measurements. Morphological traits were analyzed using ImageJ ver.…”

Section: Morphological Traits and Comparison Between Sexesmentioning

confidence: 99%

Sexual dimorphism in corallite size and modularity of a broadcast spawning coral, Porites lobata

Pedraza-Pohlenz

Balart²,

Tortolero-Langarica

et al. 2023

Front. Mar. Sci.

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Differences in selective pressures and the energetic cost of gametes in gonochoristic corals should vary with the sex of the colony, which may lead to sexual dimorphism. Coral colonies are composed of subunits (corallites) that create a complex morphological architecture. If corallite features are distinct between sexes, then the degree of coordinated change among these subunits may also vary (phenotypic modularity). This study tested for sexual dimorphism in the corallites of the reef-building coral Porites lobata, a gonochoric broadcast spawner, and compared this with previously demonstrated sexual dimorphism in its congener P. panamensis, a gonochoric brooder. Corallite area in P. lobata was 17% larger for males than for females (p < 0.05). Phenotypic modularity analysis showed that the integration of skeletal traits differs between sexes in both P. lobata and in P. panamensis. In P. lobata, females showed a higher trait integration than males, while the opposite pattern was observed in P. panamensis. Our results demonstrate corallite traits differentiate between sexes and suggest that between-sex differences in the degree of corallite integration may vary with reproductive mode.

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Porites

Cited by 5 publications

References 18 publications

Catastrophic impact of typhoon waves on coral communities in the Ryukyu Islands under global warming

Catastrophic impact of typhoon waves on coral communities in the Ryukyu Islands under global warming

Recent coral reef conditions in Weh Island, Aceh Province, Indonesia

Sexual dimorphism in corallite size and modularity of a broadcast spawning coral, Porites lobata

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