Population Densities of the Sea Urchin, Echinometra Mathaei, in Relation to Defined Habitat Types In Diani Lagoon, Kenya.
Eight habitat types within the lagoon were defined including, sand; 50% seagrass cover; 80% Thalassodendron ciliatum cover; 100% Thalassodendron ciliatum cover; sparse grass; rubble and debris; eroded coral with algae; and dissected reef platform. The populations of Echinometra mathaei within each habitat were defined to show density, habitat preference and associated behavioral tendencies. It was found that rubble is the preferred habitat with an average of 24.5/E. mathaei/m2. In addition, the extent of each habitat type was measured and an analysis of the lagoon was carried out. Furthermore, comparisons with previous work were done, showing that numbers do not seem to have increased in the last 20 years as is the common belief.
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| Main Author: | |
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| Format: | Report biblioteca |
| Language: | English |
| Published: |
Exeter University
1990
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| Subjects: | Population density, Echinoderm fisheries, Ecotypes, Sea grass, Coral reefs, |
| Online Access: | http://hdl.handle.net/1834/8484 |
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