Abstract

We assess the status of Cameroon’s coastal and marine environment, from field survey results and analysis of existing environmental and bioeconomic datasets. The study was undertaken at a broad level, and at greater resolution in the area likely to be influenced by the Chad–Cameroon pipeline. Thirty-six coastal sites are characterised using a proven, robust environmental assessment technique. Solid waste was more prevalent and abundant than beach oil, and both were most common around Douala towards Kribi. Offshore sampling was undertaken at 77 sites, 80% of which were dominated by mud or silt fractions, whereas hard substrata were uncommon.

Key biological resources were identified in three main areas of the Cameroon coast, from the analysis of existing environmental data, using a Geographic Information System: (1) northern region around Ndian (mangroves); (2) central region in and around Douala (mainly mangroves and including a protected area); and (3) southern region between Kribi and Campo (mangroves including a protected area). Coastal uses/pressures are greatest around Douala, an area associated with at least five different major uses/pressures. Other parts of the coast appear to have fewer uses/pressures, although these areas are extensive. Coastal areas where concentrated biological resources coincide with coastal uses/pressures are extensive, encompassing much of the coastal zone. These are indicative of resource–use conflicts, where management action should be a high priority. Areas where biological resources coincide with multiple/heavy coastal uses and pressures are fewer and less extensive.

Cameroon’s coastal resources (e.g. fisheries) are of direct significance. Their ecosystem services are also important, an estimated US$ 8.3 billion y-1 nationally. This is equivalent to US$ 600 person-1 y-1, a figure approximating per capita gross national product (US$ 610). Within the pipeline project area, ecosystem services may be ca. US$ 1.5 billion y-1, or US$ 105 person-1 y-1. Estimated project benefits from royalties are equivalent to only US$ 4 person-1 y-1 over 30 years and about 1700 jobs. Major project costs are ca. US$ 1.8 billion. Valuations of both ecosystems and the project necessarily make assumptions. Nevertheless, even large reductions in individual habitat values do not undermine the remarkable overall value of ecosystem service and natural capital, nor their importance in cost–benefit analysis.

Our assessment of overall risk of coastal oil pollution in the project area combines probability of spillage (based on previous work), and a modified index of environmental sensitivity. This estimates the extent of coastline and habitats at risk, and the associated degree of overall risk. High risk areas include: (1) area between Enyangoe and Ondja (north/central project area); (2) area from Loiaba to south of Biyo (south/central project area); and (3) segment of coast to the north and south of Campo (south project area). The same process can be applied using different oil spill scenarios or more comprehensive datasets.

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References

Applied Science Associates
.
1996
.
Chad FSO (Floating Storage & Offloading Vessel) spill simulations
.
ASA
,
Appolinaire, Z.
1993
. “
Mangroves of Cameroon
”. In
Conservation and Sustainable Utilization of Mangrove Forests in Latin America and Africa Regions. Part II, Africa, International Society for Mangrove Ecosystems and International Tropical Timber Organisation
, Edited by: Diop, E.
193
209
.
Okinawa, , Japan
:
University of the Ryuskyus
.
In
Binet, D. and Marchal, E.
1993
. “
The large marine ecosystem of shelf areas in the Gulf of Guinea: long-term variability induced by climatic changes
”. In
Large Marine Ecosystems: Stress, Mitigation and Sustainability
, Edited by: Sherman, K., Alexander, L. and Gold, B.
104
118
.
Washington, DC
:
AAAS Press
.
In
Costanza, R., d’Arge, R., de Groot, R., Farber, S., Grasso, M., Hannon, B., Lamburg, K., Nazeem, S., O’Neil, R.V.O., Paruclo, J., Ruskin, R.G., Sutton, P. and Van den Belt, M.
1997
.
The value of world’s ecosystem service and natural capital
.
Nature
,
387
:
253
260
.
Culverwell, J.
1997
. “
Long-term recurrent costs of protected area management in Cameroon
”. In
Monitoring of protected areas, donor assistance and external financing; ecological and management priorities of current and potential protected area system
,
Cameroon/MINEF Project 33.06.01
Yaounde
:
World Wildlife Fund for Nature
.
Dames and Moore Inc.
1997
. “
Chad Export Project
”. In
Environmental Assessment. Cameroon Portion
Dames and Moore Inc.
1997
. “
Chad Export Project
”. In
Environmental Assessment: Appendices. Cameroon Portion
Dames and Moore Inc.
1998
. “
Chad Export Project
”. In
Environmental Management Plan. Cameroon Portion
Dames and Moore Inc.
1998
. “
Chad Export Project
”. In
Environmental Management Plan: Appendices. Cameroon Portion
Folack, J.
1995
.
The present state of the marine coastal ecosystem in Cameroon and human impact. Coastal systems and sustainable development in Africa, UNESCO Rep
.
Mar. Sci.
,
66
:
49
64
.
Folack, J.
1995
.
Industrial catch of small coastal pelagic fish in Cameroon
.
Sci. Mar.
,
59
(
3/4
):
549
554
.
Folack, J. and Njifonjou, O.
1995
. “
Characteristics of marine artisanal fisheries in Cameroon
”. In
Rethinking Fisheries Management. Integrated Development of Artisanal Fisheries in West Africa (IDAF)
,
Newsletter No 28
186
221
.
Gabache, C.E., Folack, J. and Yongbi, G.C.
1998
.
Tar ball levels on some beaches in Cameroon
.
Mar. Pollut. Bull.
,
36
(
7
):
535
539
.
Gardline Surveys
.
1995
. “
Chad-Cameroon Pipeline System Offshore Geophysical, Amrine Biological and Oceanographic Survey March 1995
”. In
Environmental Survey Report
,
Great Yarmouth, , UK
:
Esso Pipeline Company Ltd/Gardline Surveys
.
Gardline Surveys
.
1995
. “
Chad-Cameroon Pipeline System Offshore Geophysical, Marine Biological and Oceanographic Survey March 1995
”. In
Oceanographic Survey Report
,
Great Yarmouth, , UK
:
Esso Pipeline Company Ltd/Gardline Surveys
.
Gardline Surveys
.
1995
. “
Chad-Cameroon Pipeline System Offshore Geophysical, Marine Biological and Oceanographic Survey March 1995
”. In
Geophysical Survey Report
,
Great Yarmouth, , UK
:
Esso Pipeline Company Ltd/Gardline Surveys
.
Gundlach, E.R. and Hayes, M.O.
1978
.
Vulnerability of coastal environments to oil spill impacts
.
Mar. Tech. Soc. J.
,
12
:
18
27
.
Hardman-Mountford, N.
1999
. “
Cameroon Coastal Conservation And Management Plan: Desktop Study
”. In
Regional setting and coastal zone management/governance framework
Report 1. WWF-Cameroon
Hardman-Mountford, N.J., Koranteng, K.A. and Price, A.R.G.
2000
. “
The Gulf of Guinea Large Marine Ecosystem
”. In
Seas at the Millennium
, Edited by: Sheppard, C.R.C.
Oxford
:
Elsevier
.
In
Horta, K.
1997
.
Questions Concerning The World Bank and Chad Cameroon Oil and Pipeline Project
http://www.edf.org/pubs/Reports/c_chadcam.html.
IUCN (The World Conservation Union)
.
1992
. “
Protected Areas of the World
”. In
A Review of Natural Systems, Vol. 3, Afrotropical
,
Gland, Cambridge, , Switzerland and UK
:
IUCN
.
Klaus, R., Price, A. and Abbiss, M.
1997
. “
Preliminary Survey of the Marine and Coastal Ecosystems of Cameroon (WWF Project No. CM0035.01)
”. In
Enhanced satellite images of Cameroon coastal zone
Output 2. WWF-Cameroon
Laborel, J.
1974
. “
West African Reef Corals: A Hypothesis on Their Origin
”. In
Proceedings of the Second International Coral Reef Symposium 1
,
425
443
.
Brisbane
:
Great Barrier Reef Committee
.
Laporte, N., Justice, C. and Kendall, J.
1995
.
Mapping the dense humid forest of Cameroon and Zaire using AVHRR satellite data
.
Int. J. Rem. Sens.
,
16
(
6
):
1127
1145
.
Letouzy, R.
1985
. “
Cartephytogéographique du Cameroo au 1/500 000
”. In
Institut de al Carte Internationale de la Vegetation
Toulouse, , France
Milner Gulland, E.J. and Mace, R.
1998
.
Biological Conservation and Sustainable Use
,
Oxford
:
Blackwell
.
Njock, J.C.
1985
. “
Demersal fishery in Cameroon and its present trend
”. In
Ad hoc Working Group on demersal resources of CECAF Central Gulf of Guinea Division (34.3.5), 6–10 May 1986
Limbé, , Cameroon
Price, A.R.G.
1990
.
Rapid assessment of coastal management requirements: a case study from the Arabian Gulf
.
Ocean and Shorel. Manage
,
13
:
1
19
.
Price, A.R.G.
1999
.
Broadscale coastal environmental assessment of the Chagos Archipelago
.
Linn. Soc. Occ. Pap.
,
2
:
285
295
.
Price, A.R.G., Klaus, R. and Abiss, M.
1997
. “
Preliminary Survey of the Marine and Coastal Ecosystems of Cameroon (WWF Project No. CM0035.01)
”. In
Compilation and assessment of existing information
Output 1. WWF-Cameroon
Price, A.R.G., Abiss, M., Klaus, R., Kofani, M. and Webster, G.
1997
. “
Preliminary Survey of the Marine and Coastal Ecosystems of Cameroon (WWF Project No. CM0035.01)
”. In
Field data based on ground-truthing
Output 3. WWF-Cameroon
Price, A.R.G., Abiss, M., Klaus, R., Webster, G. and Kofani, M.
1997
. “
Preliminary Survey of the Marine and Coastal Ecosystems of Cameroon (WWF Project No. CM0035.01)
”. In
Cameroon’s marine and coastal ecosystems, threats and management requirements
Output 4. WWF-Cameroon
Price, A.R.G., Abiss, M., Klaus, R., Webster, G. and Kofani, M.
1997 d
. “
Preliminary Survey of the Marine and Coastal Ecosystems of Cameroon (WWF Project No. CM0035.01)
”. In
WWF Project Final Report
Output 5. WWF-Cameroon
Price, A.R.G., Jobbins, G., Dawson Shepherd, A.R. and Ormond, R.F.G.
1998
.
An integrated environmental assessment of the Red Sea coast of Saudi Arabia
.
Env. Conserv.
,
25
:
65
76
.
Price, A.R.G., Klaus, R. and Sheppard, C.R.C.
1999
. “
Cameroon Coastal Conservation and Management Plan: Desktop study
”. In
Environmental assessment of Chad-Cameroon pipeline project
Report 2. WWF-Cameroon
Price, A.R.G., Hardman-Mountford, N., Klaus, R. and Sheppard, C.R.C.
1999
. “
Cameroon Coastal Conservation and Management Plan: Desktop study
”. In
Final (Summary) Report
Report 3. WWF-Cameroon
Sherman, K.
1994
.
Sustainability, biomass yields, and health of coastal ecosystems: an ecological perspective
.
Mar. Ecol. Prog. Ser.
,
112
:
277
301
.
Spalding, M., Blasco, F. and Field, C.
1996
. “
Cameroon. World Mangrove Atlas
”. In
The International Society for Mangrove Ecosystems. The World Conservation Monitoring Centre and the International Tropical Timber Organisation
Cambridge and Okinawa
UNEP/IUCN
.
1988
. “
West Africa
”. In
Coral Reefs of the World
, Vol.
1
,
369
371
.
Nairobi
:
IUCN Gland, and UNEP
.
pp. 369–371
Villegas, L. and Garcia, S.
1983
.
Demersal fish assmeblages in Liberia, Ghana, Togo, Benin and Cameroon Programmer for the development of fisheries in the Eastern Central Atlantic INT/81/014 CECAF/ECAF SERIE 83/26(En) FAO, Rome
16
16
.
Wilkinson, C., Lindén, O., Cesar, H., Hodgson, G., Rubens, J. and Strong, A.
1999
.
Ecological and socio-economic impacts of 1998 coral mortality in the Indian Ocean: an ENSO impact and a warning of future change
.
AMBIO
,
28
(
2
):
188
196
.