Kribi industrial extension and the mangrove decision
An environmental impact assessment is being scoped for a 60 ha extension of the industrial zone behind Kribi's deep-water port. The site is a mangrove-fringed coastal flat with Avicennia and Rhizophora stands and tidal creeks, and three fishing villages of about 1,800 people who land and smoke fish there. The port authority says the extension will create 2,000 construction jobs and 600 permanent jobs, and is needed to handle rising container traffic. The inland alternative, 14 km away, costs about 40% more and needs a new access road through farmland. Three options are on the table. (1) Fill all 60 ha. (2) Fill 20 ha on the landward side, retain 40 ha of mangrove, and fund 90 ha of replanting 30 km away plus a fish-smoking facility. (3) Use the inland site. Surveys show fish landings near the site have fallen about 25% in ten years, attributed to population growth and to earlier port dredging. The villages hold no formal title to the land or the creeks.
1. Which option should the assessment recommend, and on what reasoning?
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Option 2, made conditional, is the defensible recommendation. Judge each option against the avoid–minimise–compensate sequence and against who bears the loss.
Option 1 fails at the first test when a less damaging layout exists. Filling all 60 ha removes the mangrove that shelters the shoreline, filters sediment and nurseries the fish the villages catch - and the loss falls on people with no title, so it is effectively uncompensated. Against a fishery already down 25%, further pressure is hard to justify.
Option 2 keeps the seaward fringe that does the ecological work and fills only the landward side, where the mangrove is thinnest. The fish-smoking facility matters because it addresses the livelihood directly; habitat offset alone does not put fish in a smoker's hands.
Option 3 is the cleanest environmentally and should be kept as a fallback, but at 40% higher cost plus a new road through farmland it converts a mangrove loss into a farmland and access loss, and separates the industry from the deep-water berths that are the reason for the site.
Conditions do the work that the option alone cannot: independent monitoring of the retained 40 ha, no dredging in the tidal creeks, a legally binding livelihood fund, and job quotas with training for the three villages.
2. The developer argues that 90 ha of new mangrove 30 km away fully compensates for 40 ha lost. Explain why this is unlikely to be true.
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Area is the weakest possible measure of equivalence. Five reasons make the offset unequal.
Function develops with age. A planted stand takes 10–20 years to build the aerial roots, canopy and leaf litter that provide nursery habitat and trap sediment. For that period the compensation is nominal, while the loss is immediate.
Establishment often fails. Planted mangroves frequently suffer high mortality from wrong elevation, salinity, wave energy or crab damage. Ninety hectares planted may yield considerably less than ninety hectares of functioning forest; a realistic survival assumption must be applied before any equivalence is claimed.
Location is not neutral. Fish larvae that supply the villages depend on the creeks and flushing patterns of this shoreline. A stand in a different tidal setting, 30 km away, may not support the same stock or be reachable by the same fishermen.
The loss is local and immediate, the gain is distant and delayed. The villages lose storm buffering, wood and creek access now; the benefit accrues elsewhere, later, to other people.
Some values are irreplaceable in place. Shoreline protection against swell and the filtering of runoff from the port area operate only where the forest stands.
So the offset should be presented as partial mitigation, never as like-for-like compensation.
3. What conditions would you attach to your recommended option, and how would you check later that they were met?
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Conditions should be few, measurable and legally binding, not a list of good intentions.
Boundary and monitoring. Fix the 40 ha retained area by coordinates on a published map and fund independent annual monitoring of canopy cover, creek water quality and fish landings, reported publicly. If cover falls below an agreed level, the developer funds remediation.
No net increase in pressure on the creeks. Prohibit dredging, spoil dumping and new outfalls in the tidal creeks during construction, with an agreed turbidity limit and a stop-work trigger if it is exceeded.
Livelihood package with teeth. The fish-smoking facility should be built and handed to a village association before filling begins, with a funded maintenance arrangement and a compensation schedule for anyone who loses access to a landing site. Payment into a fund held by the villages, not by the port, is the safeguard.
Jobs with a paper trail. Publish construction and permanent job numbers disaggregated by village, with a training commitment, so the 2,000 and 600 figures can be checked against reality rather than remaining a promise.
Verification. A joint committee of the villages, council, developer and an independent assessor should meet twice a year and publish a short compliance report; the EIA permit should lapse if key conditions are breached.