Biophysical environment
The countries of the Western Indian Ocean (WIO) region share a common but varying dependence on the coastal resources including fisheries resources. Currently the coastal zone of the mainland states is home to over 30 million people and about 7.7 million more live on the Islands of Seychelles, Mauritius, Madagascar, Comoros and Réunion (Linden and Lundin, 1997). Coastal resources in the Eastern African region have supported the livelihoods of generations of coastal dwellers and have contributed to the economic development of most countries in the region.
In this report a review of national policies and legislation addressing issues of the alteration and destruction of critical coastal and marine habitats, and the institutional arrangements towards alleviating the same is presented. The land-based social and economic activities impacting on the habitats and the extent to which the latter are affected is assessed. Emphasis has been placed on the link between the impacts and tourism or tourism catalysed activities.
The Indian Ocean Tsunami of 26 December 2004 affected part of Somalia, with most of the damage experienced in the north-east along a 650 km coastline stretching from Xafuun in the Bari region, to Garacad in the Mudug region. About 44,000 people are believed to have been affected by the tsunami.
The coastal ecosystem of the Indian Ocean includes environments such as mangroves, seagrass beds and coral reefs. These habitats are some of the most productive and diverse environments on the planet. They form an essential link in the food webs that leads to fish and other seafood providing food security to the local human population. In addition coral reefs and mangrove forests protect the coastal areas against erosion. Unfortunately, due to a number of human activities, these valuable environments are now being degraded at an alarming rate.
The issue of shoreline changes has increasingly become a major social, economic and environmental concern to a large number of countries in the western Indian Ocean (WIO) region, where it poses a serious problem to the environment and human settlements.
Restoring, maintaining and conserving the ecological integrity of the Agulhas Somali Current Large Marine Ecosystem (Figure 1) while ensuring optimal and sustainable utilization of the resources has been identified as a priority (Obura et al., 2012), especially with regard to the development of policy for the establishment of transboundary Marine Protected Areas (MPAs). This task requires knowledge of the spatial distribution of the physical and biological patterns and processes than sustain marine biodiversity in the region (Lombard et al. 2007; Sink and Attwood 2008).
Clean water and the many products and services of aquatic ecosystems are necessities for human welfare. Water connects human societies and ecological systems by providing food and energy. The hydrological cycle maintains the health and stimulates the productivity and diversity of all ecosystems.
The main objective of this book is to provide teachers of primary and secondary schools in the western Indian Ocean (WIO) region with a basic textbook that will allow them to introduce environmental components in the classroom as well as in outdoor activities.
Corals as organisms and coral reefs as structures and ecosystems have fascinated scientists for centuries. Charles Darwin became well-known among natural scientists long before the publication of The Origin of Species, partly because of his studies of coral reefs and coral islands.
In 1984, the Government of the Democratic Republic of Somalia approached the Executive Director of UNEP with a request for assistance in assessing the coastal and marine environmental problems of the country in drawing up a national action plan for the protection, management and development of its marine and coastal environment.
