الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 69 |  |  |
| | | from | 69 | | |
Abstract
Ecotones are transition zones between the neighbor ecosystems acting as sensitive indicators of environmental changes .ehe Red sea-Africa ecotone(as chemo ecotone) is a major ecotone encompassing three countries, Egypt, Sudan and Eretria, along Red sea shoreline (about 2200 km). Red Sea-Eastern Sesert Ecotone in Egypt extends to about 1000 km approximately.