Abstract
Effects of fishing with explosives (blastfishing) and sodium cyanide and of anchor damage on live coral were investigated on a heavily exploited fringing reef in Bolinao, Philippines from 1987 to 1990. A simple balance- sheet model indicated that approximately 1.4%/yr of the hermatypic coral cover may have been lost to blasting, 0 4%/yr to cyanide, and 0.03%/yr to coral-grabbing anchors, the potential coral recovery rate reduced by about one third from 3 8%/yr in the absence of disturbances to 2 4%/yr. These figures are subject to considerable uncertainty due to compounding of errors during computation. Reefs with patchy coral cover are more susceptible to damage from blastfishing because of targeting by fishers. Reefs with smaller corals may have greater resilience, because each unit of radial colony growth contributes a greater per cent increase in areal cover. Blastfishing in particular may reduce resilience to natural perturbations, leading to assemblages of small, sparse corals and reduced patchiness.
| Original language | English |
|---|---|
| Pages (from-to) | 69-78 |
| Number of pages | 10 |
| Journal | Environmental Management |
| Volume | 21 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 1 1997 |
| Externally published | Yes |
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Keywords
- Blastfishing
- Coastal management
- Coral
- Coral reef
- Cyanide
- Destructive fishing
ASJC Scopus subject areas
- Environmental Science(all)
- Environmental Chemistry
- Earth and Planetary Sciences(all)
Cite this
Effects of some destructive fishing methods on coral cover and potential rates of recovery. / McManus, John; Reyes, Rodolfo B.; Nañola, Cleto L.
In: Environmental Management, Vol. 21, No. 1, 01.01.1997, p. 69-78.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of some destructive fishing methods on coral cover and potential rates of recovery
AU - McManus, John
AU - Reyes, Rodolfo B.
AU - Nañola, Cleto L.
PY - 1997/1/1
Y1 - 1997/1/1
N2 - Effects of fishing with explosives (blastfishing) and sodium cyanide and of anchor damage on live coral were investigated on a heavily exploited fringing reef in Bolinao, Philippines from 1987 to 1990. A simple balance- sheet model indicated that approximately 1.4%/yr of the hermatypic coral cover may have been lost to blasting, 0 4%/yr to cyanide, and 0.03%/yr to coral-grabbing anchors, the potential coral recovery rate reduced by about one third from 3 8%/yr in the absence of disturbances to 2 4%/yr. These figures are subject to considerable uncertainty due to compounding of errors during computation. Reefs with patchy coral cover are more susceptible to damage from blastfishing because of targeting by fishers. Reefs with smaller corals may have greater resilience, because each unit of radial colony growth contributes a greater per cent increase in areal cover. Blastfishing in particular may reduce resilience to natural perturbations, leading to assemblages of small, sparse corals and reduced patchiness.
AB - Effects of fishing with explosives (blastfishing) and sodium cyanide and of anchor damage on live coral were investigated on a heavily exploited fringing reef in Bolinao, Philippines from 1987 to 1990. A simple balance- sheet model indicated that approximately 1.4%/yr of the hermatypic coral cover may have been lost to blasting, 0 4%/yr to cyanide, and 0.03%/yr to coral-grabbing anchors, the potential coral recovery rate reduced by about one third from 3 8%/yr in the absence of disturbances to 2 4%/yr. These figures are subject to considerable uncertainty due to compounding of errors during computation. Reefs with patchy coral cover are more susceptible to damage from blastfishing because of targeting by fishers. Reefs with smaller corals may have greater resilience, because each unit of radial colony growth contributes a greater per cent increase in areal cover. Blastfishing in particular may reduce resilience to natural perturbations, leading to assemblages of small, sparse corals and reduced patchiness.
KW - Blastfishing
KW - Coastal management
KW - Coral
KW - Coral reef
KW - Cyanide
KW - Destructive fishing
UR - http://www.scopus.com/inward/record.url?scp=0030615688&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030615688&partnerID=8YFLogxK
U2 - 10.1007/s002679900006
DO - 10.1007/s002679900006
M3 - Article
AN - SCOPUS:0030615688
VL - 21
SP - 69
EP - 78
JO - Environmental Management
JF - Environmental Management
SN - 0364-152X
IS - 1
ER -