Studies on the succession of vegetation on some islands and sand banks in the nile near Khartoum, Sudan

Plant succession on abandoned fields after 25 years of shifting cultivation in Assuit, Egypt

“…After 25 years of abandonment, woody and grassy species of the last stage of succession became dominated by Desmostachya bipinnata-Tamarix nilotica-Acacia nilotica-Ziziphus spina-christi. These sequences were fast, similar to those attained by Halwagy (1963) in his study on the vegetation succession in the Nile Islands in Sudan. A rapid and growing invasion of the Ricinus communis population was observed after 2-6 years of the abandonment of shifting cultivation (a reverse J-shaped curve size-frequency distribution).…”

Ten years primary succession on a newly created landfill at a lagoon of the Mediterranean Sea (Lake Burullus RAMSAR site)

“…and Tamarix nilotica. This change occurred fast and is similar to that found by Halwagy (1963) in his study on the vegetation succession in a Nile Island in Sudan, and the study of El-Sheikh (2005) on plant succession of the abandoned fields in Egypt.…”

Riparian vegetation‐environment relationships: complimentarity of gradients versus patch hierarchy approaches

“…Much of the variation explained by patchiness along the Sabie River was at the scale of the morphological unit, and was partly related to large well developed alluvial islands (Table 3). Other studies have also found the degree of bar development to be an important influencing factor influencing vegetation pattern, noting a close relationship with age of the fluvial surface (Halwagy 1963;Fonda 1974;Hicken & Nanson 1975;Johnson et al 1976;Nanson & Beach 1977;Friedman et al 1996). A successionary sequence is implied from the relationship, where historical flood events are the key in creating new depositional surfaces and providing surface flows for the establishment of riparian vegetation.…”