2011
Recent revisions to the satellite-derived vertical gravity gradient (VGG) data reveal more detail of the ocean bottom and have allowed us to develop a non-linear inversion method to detect seamounts in VGG data. We approximate VGG anomalies over seamounts as sums of individual, partially overlapping, elliptical polynomial functions, which allows us to form a non-linear inverse problem by fitting the polynomial model to the observations.
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).
The following country report begins with an overview of coastal livelihoods in Comoros, which provides a concise overview of the seven sector reports and the findings of the in-country and regional consultants. This overview ends with a conclusion which summarizes the collected information as it relates to the coastal zone in Comoros in general. This overview is followed by the more detailed sector reports, which represent the original contributions by the in-country and regional consultants.
Deteriorating quality of the coastal waters of the ASCLME region poses a significant threat to public health as well as to the health of its living marine resources and ecosystems – and thus also to the economy to which fisheries revenues, for example, contribute US$943 million annually (ASCLME). The sources of pollution which contribute to this deterioration include both land-based and marine and maritime related activities.
The following country report begins with an overview of coastal livelihoods in Comoros, which provides a concise overview of the seven sector reports and the findings of the in-country and regional consultants. This overview ends with a conclusion which summarizes the collected information as it relates to the coastal zone in Comoros in general.
Coastal resources refer to the natural resources found in coastal areas, which is useful for human today or in the coming future, these include fish, shellfish, marine mammals, seabirds and other marine organisms (seaweed, coral reefs) land, forests, coastal waters and wetlands, sand minerals, among others (Walters, 1998; Jin, 2002). These resources are crucial and important and the benefits provided by them are both widely recognized but poorly understood by the majority (Daily, 1997).
The purpose and overall objective of this project is to calculate the total economic value of the marine and coastal resources in both Mozambique and South Africa and to assess the impacts of implementing a sustainable use policy for the region. These individual country reports on the value of the coastal and marine resources will be collated with the various other country assessments of the same nature to create a single ASCLME regional report.
Marine and coastal ecosystems are characterized by their biodiversity richness and have crucial ecosystem goods and services that highly contribute to livelihood of people and economic development of a nation. Various sectors that link to marine and coastal ecosystems services such as fisheries, tourism, marine transportation, oil production,… are important for economic development for a given country. Unfortunately marine resources are threatened by various human pressures and natural catastrophe such as overfishing, pollution, and climate change.
Les Comores constituent un archipel de l’Océan Indien, composé de quatre îles situées entre Madagascar et la Côte Est du continent Africain ; il s’agit de la Grande Comore(Ngazidja), Anjouan(Ndzouani), de Mohéli (Moili) et de Mayotte (Maoré). Pour l’ensemble, la superficie est estimée à 2237 Km² et la population à quelques 700 000 habitants.
The Agulhas and Somali Current Large Marine Ecosystem (ASCLME) Project is a UNDP/GEF regional project covering nine countries in the Western Indian Ocean which include: Comoros, Kenya, Madagascar, Mauritius, Mozambique, Seychelles, Somalia, South Africa and Tanzania all of which following the UNCLOS (1982), have proclaimed their ocean ward extents to the 200 nautical mile limit of their Exclusive Economic Zones. The proclamation gives the countries jurisdictional powers over the governance of the natural resources in these LMEs as provided by UNCLOS (1982).
