TY  - BOOK
AU  - Abdelwahab Afefe Abdelwahab Afefe
AU  - Elbialy Elsayed Ahmed Hatab , 
AU  - Elsayed Ibrahim Gaber , 
AU  - Mohamed Said Abbas , 
TI  - Ecological studies on the vegetation cover in North Africa protectorates : : A case study of Wadi Elrayan protected area , Fayoum, Egypt / 
PY  - 2014///
CY  - Cairo : 
PB  - Abdelwahab Afefe Abdelwahab Afefe , 
KW  - Protected area
KW  - Vegetation
KW  - Wadi El Rayan
N1  - Thesis (M.Sc.) - Cairo University - Institute of African Research and Studies - Department of Natural Resources; Issued also as CD
N2  - Wadi El Rayan located in the Sahara ecoregion which is part of the Palearctic ecozone which is  the world's largest hot desert, located in northern Africa. The desert of wadi El Rayan consists of arid  vegetation (xerophytic and halophytic plants) with a sparse plant cover except in wetlands ecosystem at  shoreline of lakes consists of some of hydrophytic and halophytic plants. The field survey recorded 13  plant families within the study area; species recorded a total of 17 species were recorded in the various  habitats of the around the two lakes. The family with the highest number of species was Poaceae  followed by Chenopodiaceae, and Zygophyllaceae. The results showed that Phragmites australis,  Tamarix nilotica, Juncu rigidus and Alhagi graecorum were the most frequently recorded species, and  Tamarix nilotica and Juncu rigidus represented the highest cover. The field observations reached to that  a clear variation was recorded for vegetation surrounding the lakes and a dramatic decrease in the water  level is now taking place in Wadi El Rayan lower lake; and there is low diversity and number of plant  species in wetland habitats around the shoreline in southern sector of lower lake, also most the existed  natural vegetation has died such as Phragmites australis, except the woody species Tamarix nilotica, that spread in a large area with a good condition due to the dramatic decrease of the water level and to  the high salinity of in this area. The classification the ecosystems around the lakes of Wadi El Rayan  divided into two main ecosystems: (1) Wetland ecosystem and (2) Desert ecosystem.  According to the IUCN criteria (IUCN red list threatened category), the Calligonum polygonoides  subsp.comosum species falls into the "C" category (Small population size and decline)
UR  - http://172.23.153.220/th.pdf
ER  -