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AMBIO

, Volume 43, Issue 8, pp 1006–1019 | Cite as

Intertidal Zone Management in the Western Indian Ocean: Assessing Current Status and Future Possibilities Using Expert Opinions

  • Lina Mtwana Nordlund
  • Maricela de la Torre-Castro
  • Johan Erlandsson
  • Chantal Conand
  • Nyawira Muthiga
  • Narriman Jiddawi
  • Martin Gullström
Report

Abstract

This expert opinion study examined the current status of the intertidal zone in the Western Indian Ocean (WIO) and ranked and discussed future management approaches. Information was gathered from scientists, practitioners, and managers active in the WIO region through a questionnaire and a workshop. The experts stated that the productive intertidal environment is highly valuable for reasons such as recreation, erosion protection, and provision of edible invertebrates and fish. Several anthropogenic pressures were identified, including pollution, harbor activities, overexploitation, and climate change. The experts considered the WIO intertidal zone as generally understudied, undermanaged, and with poor or no monitoring. The most important management strategies according to the expert opinions are to develop and involve local people in integrated coastal zone management (ICZM), to increase knowledge on species–environment relationships, and to develop awareness campaigns and education programs. To improve coastal environmental management and conservation, we argue that the intertidal zone should be treated as one organizational management unit within the larger framework of ICZM.

Keywords

Expert opinions Ecosystem function Integrated coastal zone management (ICZM) Closures Environmental monitoring Ecosystem-based management 

Notes

Acknowledgments

We are grateful to the experts working in the Western Indian Ocean who responded to the questionnaire and participated in the “workshop”. We would like to acknowledge the following people for their valuable inputs to this paper: S. R. Mwaitega, T. M. Daw, J. Okello, N. Kautsky, A. Muthumbi, C. Halling, A. J. Mmochi, H. M. Hajj, O. Henriksson, D. Murage, T. Lavitra, S. Benbow, T. L. Jörgensen, S. Muando, E. Wood, J. Rubens, L. Scott, M. E. Asplund, S. C. Masuka, L. Rasmusson, A. W. Mwandya, H. Eriksson, D. S. Mukaka, U. Kloiber, M. Igulu, A. MacDonald, J. Larsson, C. M. Kihia, A. Knudby, D. J. Msangameno, N. Wambiji, F. Lanshammar, E. Fondo, Y. Tibirçá, P. Scarlet, J. Okondo, T. Andrew, R. Milne, S. Brumme, C. Rogito, and J. Nyamora. Additionally, there are several anonymous experts whom we would like to thank. Further, we would like to acknowledge WIOMSA for the possibility to conduct a workshop/side event at the 7th WIOMSA Scientific Symposium (24–29 October 2012) held in Mombasa, Kenya. L.M.N. acknowledges financial support from the Western Indian Ocean Marine Association (WIOMSA), under Grant No. MASMA/books/04/12, and conference support, as well as the Åbo Academy Jubilee foundation, Finland. M.T.C. acknowledges the financial support from Sida (Swedish International Development Cooperation Agency) and VR (Swedish Research Council) 344-2011-544. M. G. acknowledges the financial support from Sida (Swedish International Development Cooperation Agency).

Supplementary material

13280_2013_465_MOESM1_ESM.pdf (210 kb)
Supplementary material 1 (PDF 211 kb)

References

  1. Abbassi, T., and S.A. Abbassi. 2011. Ocean acidification: The newest threat to the global environment. Critical Reviews in Environmental Science and Technology 41: 1601–1663.CrossRefGoogle Scholar
  2. Álvarez-Romero, J.G., R.L. Pressey, N.C. Ban, K. Vance-Borland, C. Willer, C.J. Klein, and S.D. Gaines. 2011. Integrated land–sea conservation planning: The missing links. Annual Review of Ecology Evolution and Systematics 42: 381–409.CrossRefGoogle Scholar
  3. Anderson, S.C., J.M. Flemming, R. Watson, and H.K. Lotze. 2011. Rapid global expansion of invertebrate fisheries: Trends, drivers, and ecosystem effects. PLoS ONE 6: e14735.CrossRefGoogle Scholar
  4. Armitage, D., F. Berkes, and N. Doubleday. 2007. Adaptive co-management. Collaboration, learning and multi-level governance. Vancouver: UBC Press.Google Scholar
  5. Balmford, A., and W. Bond. 2005. Trends in the state of nature and their implications for human well-being. Ecology Letters 8: 1218–1234.CrossRefGoogle Scholar
  6. Barbier, E.B., S.D. Hacker, C. Kennedy, E.W. Koch, A.C. Stier, and B.R. Silliman. 2011. The value of estuarine and coastal ecosystem services. Ecological Monographs 81: 169–193.CrossRefGoogle Scholar
  7. Brown, K. 2003. Integrating conservation and development: A case of institutional misfit. Frontiers in Ecology and the Environment 1: 479–487.CrossRefGoogle Scholar
  8. Cinner, J.E. 2009. Poverty and the use of destructive fishing gear near east African marine protected areas. Environmental Conservation 36: 321–326.CrossRefGoogle Scholar
  9. Coles, R., A. Grech, M. Rasheed, L. McKenzie, R. Unsworth, and F. Short. 2011. Seagrass ecology and threats in the tropical Indo-Pacific bioregion. In Seagrass: Ecology, uses and threat, ed. R. Pirog, 225–239. New York: Nova Science Publishers.Google Scholar
  10. Conand, C. 2002. Marine ecology of La Reunion: An overview of recent research. AMBIO 31: 602–605.Google Scholar
  11. Conand, C., and N. Muthiga, ed. 2007. Commercial sea cucumbers: A review for the Western Indian Ocean. WIOMSA Book Series, No. 5, 66 pp.Google Scholar
  12. Coughanowr, C.A., M. Ngoile, and O. Lindén. 1995. Coastal zone management in eastern Africa including the island states: A review of issues and initiatives. AMBIO 24: 448–457.Google Scholar
  13. Cullen-Unsworth, L.C., L.M. Nordlund, J. Paddock, S. Baker, L.J. McKenzie, and R.K.F. Unsworth. 2013. Seagrass meadows globally as a coupled social–ecological system: Implications for human wellbeing. Marine Pollution Bulletin. doi: 10.1016/j.marpolbul.2013.06.001.
  14. de la Torre-Castro, M. 2006. Beyond regulations in fisheries management: The dilemmas of the “beach recorders” Bwana Dikos in Zanzibar, Tanzania. Ecology and Society 11: 35.Google Scholar
  15. de la Torre-Castro, M., and T.J. Lyimo, ed. 2012. People, Nature and Research in Chwaka Bay, Zanzibar, Tanzania, 346 pp. Zanzibar Town: WIOMSA. ISBN: 978-9987-9559-1-6.Google Scholar
  16. de la Torre-Castro, M., and P. Rönnbäck. 2004. Links between humans and seagrasses—An example from tropical East Africa. Ocean and Coastal Management 47: 361–387.CrossRefGoogle Scholar
  17. Dietz, T., E. Ostrom, and P.C. Stern. 2003. The struggle to govern the commons. Science 302: 1907–1912.CrossRefGoogle Scholar
  18. Dye, A.H., and N. Dyantyi. 2002. Reseeding of mussels on denuded rocky shores: Preliminary studies with the brown mussel Perna perna. South African Journal of Marine Science 24: 65–70.CrossRefGoogle Scholar
  19. Erlandsson, J., F. Porri, and C.D. McQuaid. 2008. Ontogenetic changes in small-scale movement by recruits of an exploited mussel: Implications for the fate of larvae settling on algae. Marine Biology 153: 365–373.CrossRefGoogle Scholar
  20. Fröcklin, S., M. de la Torre-Castro, L. Lindström, N.S. Jiddawi, and F. Msuya. 2012. Seaweed mariculture as a development project in Zanzibar, East Africa: A price too high to pay? Aquaculture 356–357: 30–39.CrossRefGoogle Scholar
  21. Gallagher, A. 2010. The coastal sustainability standard: A management systems approach to ICZM. Ocean Coastal Management 53: 336–349.CrossRefGoogle Scholar
  22. Gullström, M., M. de la Torre Castro, S.O. Bandeira, M. Björk, M. Dahlberg, N. Kautsky, P. Rönnbäck, and M.C. Öhman. 2002. Seagrass ecosystems in the Western Indian Ocean. AMBIO 31: 588–596.Google Scholar
  23. Halpern, B.S., K.A. Selkoe, F. Micheli, and C.V. Kappel. 2007. Evaluating and ranking the vulnerability of global marine ecosystems to anthropogenic threats. Conservation Biology 21: 1301–1315.CrossRefGoogle Scholar
  24. Hardin, G. 1968. The tragedy of the commons. Science 162: 1243–1248.CrossRefGoogle Scholar
  25. Jiddawi, N., and M. Öhman. 2002. Marine fisheries in Tanzania. AMBIO 31: 518–527.Google Scholar
  26. Kairu, K., and N. Nyandwi, ed. 2000. Guidelines for the study of shoreline change in the western Indian Ocean region. IOC Manuals and Guides, No. 40, UNESCO.Google Scholar
  27. Krueger, T., T. Page, K. Hubacek, L. Smith, and K. Hiscock. 2012. The role of expert opinion in environmental modeling. Environmental Modelling & Software 36: 4–18.CrossRefGoogle Scholar
  28. Lauber, T.B., R.C. Stedman, D.J. Decker, and B.A. Knuth. 2011. Linking knowledge to action in collaborative conservation. Conservation Biology 25: 1186–1194.CrossRefGoogle Scholar
  29. Lotze, H.K., H.S. Lenihan, B.J. Bourque, R. Bradbury, R.G. Cooke, M.C. Kay, S.M. Kidwell, M.X. Kirby, C.H. Peterson, and J.B.C. Jackson. 2006. Depletion, degradation, and recovery potential of estuaries and coastal seas. Science 312: 1806–1809.CrossRefGoogle Scholar
  30. Ludford, A., V.J. Cole, F. Porri, C.D. McQuaid, M.D.V. Nakin, and J. Erlandsson. 2012. Testing source sink theory: The spill-over of mussel recruits beyond marine protected areas. Landscape Ecology 27: 859–868.CrossRefGoogle Scholar
  31. Martin, T.G., M.A. Burgman, F. Fiddler, P.M. Kuhnert, S. Low-Choy, M. McBride, and K. Mwngersen. 2012. Eliciting expert knowledge in conservation science. Conservation Biology 26: 29–38.CrossRefGoogle Scholar
  32. Muthiga, N., and J. Kawaka. 2010. Progress towards conservation science for marine protected areas in Kenya: An annotated bibliography. WIOMSA Book series, No. 4, v + 171.Google Scholar
  33. National Research Council. 2002. The drama of the commons. Committee on the human dimension of global change, ed. E. Ostrom, T. Dietz, N. Dolsak, P.C. Stern, S. Stovich, and E.U. Weber. Washington, DC: Division of Behavioural and Social Sciences and Education, National Academy Press.Google Scholar
  34. Nordlund, L., M. de la Torre-Castro, N. Jiddawi, and J. Erlandsson. 2011. Socio-ecological effects from invertebrate harvesting in Tanzanian seagrass ecosystems—The need to investigate management approaches and future possibilities. In 2nd Annual agricultural research review workshop 2010, conference proceeding.Google Scholar
  35. Nordlund, L., J. Erlandsson, M. de la Torre-Castro, and N. Jiddawi. 2010. Changes in an East African social-ecological seagrass system: Invertebrate harvesting affecting species composition and local livelihood. Aquatic Living Resources 23: 399–416.CrossRefGoogle Scholar
  36. Richmond, M.D., ed. 2011. A field guide to the shores of Eastern Africa and the WIO islands, 3rd ed. Dar es Salaam: Sida/WIOMSA.Google Scholar
  37. Rocliffe, S. 2010. Protecting East Africa’s marine and coastal biodiversity: Marine conservation agreements in the Western Indian Ocean. http://www.mcatoolkit.org/pdf/AfricaMCAFinal.pdf.
  38. Shi, H., and A. Singh. 2003. Status and interconnections of selected environmental issues in the global coastal zones. AMBIO 32: 145–152.Google Scholar
  39. Siegfried, W.R., P.A.R. Hockey, and A.A. Crowe. 1985. Exploitation and conservation of brown mussel stocks by coastal people of Transkei. Environmental Conservation 12: 303–307.CrossRefGoogle Scholar
  40. Sloan, N.A., K. Vance-Borland, and G.C. Ray. 2007. Fallen between the cracks: Conservation linking land and sea. Conservation Biology 21: 897–898.CrossRefGoogle Scholar
  41. Stoms, D.M., et al. 2005. Integrated coastal reserve planning: Making the land–sea connection. Frontiers in Ecology and the Environment 8: 429–436.Google Scholar
  42. Torell, E., B. Crawford, D. Kotowicz, M.D. Herrera, and J. Tobey. 2010. Moderating our expectations on livelihoods in ICM: Experiences from Thailand, Nicaragua, and Tanzania. Coastal Management 38: 216–237.CrossRefGoogle Scholar
  43. UNEP. 2007. Regional profile: Eastern Africa.Google Scholar
  44. UNEP/Nairobi Convention Secretariat and WIOMSA. 2009. Regional synthesis report on the review of the policy, legal and institutional frameworks in the Western Indian Ocean (WIO) region.Google Scholar
  45. Unsworth, R.K.F., and L.C. Cullen. 2010. Recognising the necessity for Indo-Pacific seagrass conservation. Conservation Letters 3: 63–73.CrossRefGoogle Scholar
  46. Vincent, A. 2011. Saving the shallows: Focusing marine conservation where people might care. Aquatic Conservation: Marine and Freshwater Ecosystems 21: 495–499.CrossRefGoogle Scholar
  47. Wall, D.H., M.A. Palmerand, and P.V.R. Snelgrove. 2001. Biodiversity in critical transition zones between terrestrial, freshwater and marine soils and sediments: Processes, linkages and management implications. Ecosystems 4: 418–420.CrossRefGoogle Scholar
  48. Worm, B., et al. 2006. Impacts of biodiversity loss on ocean ecosystem services. Science 314: 787–790.CrossRefGoogle Scholar

Copyright information

© Royal Swedish Academy of Sciences 2013

Authors and Affiliations

  • Lina Mtwana Nordlund
    • 1
    • 2
    • 3
  • Maricela de la Torre-Castro
    • 4
    • 5
  • Johan Erlandsson
    • 6
  • Chantal Conand
    • 7
    • 8
  • Nyawira Muthiga
    • 9
  • Narriman Jiddawi
    • 10
  • Martin Gullström
    • 2
  1. 1.Environmental and Marine BiologyÅbo Akademi UniversityÅboFinland
  2. 2.Department of Ecology, Environment and Plant SciencesStockholm UniversityStockholmSweden
  3. 3.WIO CAREZanzibarTanzania
  4. 4.Department of Physical Geography and Quaternary GeologyStockholm UniversityStockholmSweden
  5. 5.Stockholm Resilience CentreStockholm UniversityStockholmSweden
  6. 6.Vattenmyndigheten Västerhavets distrikt, Länsstyrelsen Västra GötalandGöteborgSweden
  7. 7.Ecomar LaboratoryLa Reunion UniversitySaint DenisFrance
  8. 8.MNHNParisFrance
  9. 9.Wildlife Conservation SocietyMombasaKenya
  10. 10.Institute of Marine SciencesUniversity of Dar Es SalaamZanzibarTanzania

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