The effect of Lithophaga (Bivalvia: Mytilidae) boreholes on the strength of the coral Porites lobata

Scott, Peter; Risk, Michael J.

doi:10.1007/bf00300974

Cited by 79 publications

(55 citation statements)

References 17 publications

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“…Smaller colonies of all species tend to have low CSF levels, and increases in CSF depend on species-specific morphological changes with growth. (b) Synthesis of coral skeleton density and compressive strength of coral skeleton samples (nZ91) from three studies investigating a range of coral species and morphologies (see Chamberlain 1978;Scott & Risk 1988;Madin 2004). (c) Projected loss in the strength of coral skeleton with four different material densities (r a ) assuming that density decreases at 0.36% yr K1 (Cooper et al 2008).…”

Section: Resultsmentioning

confidence: 99%

“…Indeed, a synthesis of paired coral skeleton density (r a )/compressive strength (s) measurements from three studies (Chamberlain 1978;Scott & Risk 1988;Madin 2004) elucidated an exponential relationship for coral skeleton ( figure 1b). Porosity values in Chamberlain (1978) and Scott & Risk (1988) were converted into density values using r a Z2.94! (1Kporosity) because the maximum density of aragonite is approximately 2.94 g cm K3 (Hughes 1987).…”

Section: Methodsmentioning

confidence: 99%

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Climate-mediated mechanical changes to post-disturbance coral assemblages

2008

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Increasingly severe storms and weaker carbonate materials associated with more acidic oceans will increase the vulnerability of reef corals to mechanical damage. Mechanistic predictions based on measurements of colony mechanical vulnerability and future climate scenarios demonstrate dramatic shifts in assemblage structure following hydrodynamic disturbances, including switches in species' dominance on the reef and thus potential for post-disturbance recovery. Larger colonies are more resistant to factors such as disease and competition for space, and complex morphologies support more associated reef species. Future reefs are thus expected to have lower colony abundances and be dominated by small and morphologically simple, yet mechanically robust species, which will in turn support lower levels of whole-reef biodiversity than do present-day reefs.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Climate-mediated mechanical changes to post-disturbance coral assemblages

2008

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“…This similarity implies that the skeletal density of a heavily infected coral colony should be substantially smaller than that of a noninfected colony of the same age. The effect of burrows on skeletal density was demonstrated by Scott and Risk (1988) in their table 1, which reflects a significant negative correlation between the percentage of material removed by Lithophaga and the skeletal density of P. lobata.…”

Section: Notesmentioning

confidence: 99%

“…The boring bivalve Lithophaga is an important borer on the reefs of Isla de1 Cafio (Costa Rica), Isla Uva (Panama) (Scott and Risk 1988), and on the reefs of the Gulf of Elat (Aqaba), Red Sea (Fishelson 1973;Loya 1982). In the Gulf of Elat about 15 coral species are infected by this bivalve (Loya unpubl.…”

Section: Bioerosion Of Coral Reefs-a Chemical Approachmentioning

confidence: 99%

Bioerosion of coral reefs‐A chemical approach

Lazar

Loya

1991

Limnology & Oceanography

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We measured total alkalinity changes as a direct clue to the rate and mechanism (chemical or mechanical) of boring of the bivalve Lithophaga lessepsiana in colonies of the coral Stylophora pistillata, the most abundant coral‐borer association in the reefs of the northern Gulf of Elat (Aqaba), Red Sea. Our experiments included comparison between total alkalinity measurements of seawater surrounding colonies of S. pistillata free of L. lessepsiana and colonies infected with it. It is suggested that L. lessepsiana is able to redissolve chemically up to 40% of the CaCO3 deposited by S. pistillata.

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“…3). Detachment will be enhanced by the relatively light and weak skeleton of Pontes (Hughes 1987, Scott & Risk 1988. Detachment and dispersal of ramets is further enhanced by strong wave activity and weakening of the connecting skeleton by bioeroding organisms (Highsmith 1982).…”

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confidence: 99%