Environmental Engineering Reference
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TABLE 1
Modern Rates of Bioerosion (Grazing and Boring) from Experimental Substrates under a Variety of Environmental Conditions—Cont'd
Net rates of
bioerosion
(grazing
Rates of
calcification
on reef kg
CaCO 3
m 2 a 1
Rates of
microboring
kg CaCO 3
m 2 a 1
boring)
Rates of
macroboring
kg CaCO 3 m 2 a 1
þ
Environmental
conditions
accretion kg
CaCO 3 m 2 a 1
Rates of grazing
kg CaCO 3 m 2 a 1
Exposure
duration
Location
Comments
Substrate
References
Severely
impacted by El
Ni˜o
Galapagos,
Eastern Pacific
25.4
22.8
2.4
Dense populations of
echinoids
14.8 months Blocks of
Porites
Reaka-Kudla
et al. (1996)
Eutrophic waters Reunion
Island, Indian
Ocean
1.79-5.37
1.51-4.313
0.28-1.063
Includes micro- and
macroborings
12 months
Slices of
Porites
Chazottes (1996)
Eutrophic waters
Faaa-Tahiti,
French
Polynesia
10.45
10.38
8.73,
increased to
25.14
0.07
0.02
0.6
Very little coral
recruitment
High densities of
echinoids
6 months
Blocks of
Porites
Pari et al. (1998)
2.40
Eutrophic waters Moorea,
French
Polynesia
1.39
0.3
1.27
0.27
0.12
0.005
0.9-2.6
2.160
High densities of
echinoids and scarids
5 years
Blocks of
Porites
Guillaume
(1990) and Pari
et al. (2002)
Mildly eutrophic
waters
Atimaonao-
Tahiti, French
Polynesia
1.91
0.37
1.58
0.27
0.33
0.27
Very limited
coral
recruitment
High densities of
echinoids, medium
scarids
5 years
Blocks of
Porites
Pari et al. (2002)
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