Floristic Composition of Plant Life in Damietta Branch – River Nile: Dakahlia Govern

Document Type : Original Article

Authors

1 Botany Department, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt

2 Environmental Studies Department, National Authority for Remote Sensing and Space Sciences (NARSS), Cairo 11769, Egypt

10.21608/mjb.2021.460002

Abstract

The Nile River irrigates Egypt's agricultural fields nearly continually through a vast network of canals and drains. The goal of this research is to characterize the taxonomic structure of the Damietta branch of the Nile River. All flora species were registered in five plots (each 25 m2) in each stand, and the frequency (IV=100) was calculated. The total number of the documented vegetal taxa in the recent investigation is 64 (28 annual taxa, 1 bi-ennial species, 35 perennial tax), related to 53 genera and 28 families. Poaceae and Asteraceae are the most abundant families being signified cooperatively by 20 taxa or nearly 31.25 % of the whole species verified.  These taxa can be categorizied biologically into 4 main categories; 2 sub-merged category, 6 floating category, thirteen emergent category and 53 terrestrial category taxa. It is also obvious that, the life-form spectrum in three drains is mainly represented by therophytes (41.42%), followed by geophytes (17.14%), helophytes (15.71 %), hydrophytes (10 %), hemicryptophytes (8.57%) and nanophanerophytes (4.28 %). The least value of life forms is verified to be chamaephytes, that achieved value of 2.85 %. The floristic investigation of the selected area reveals the following; 13 species (20.31 % of the total documented taxa) are cosmopolitan taxa the same number was recorded in pantropical. Additionally, 38 taxa (nearly 59.39 % of the whole taxa verified) are worldwide species (Pluri-Regional, Bi- Regional, Cultivated and Naturalized, Mediterranean, Sudan Zambian, Palaeotropical, Pantropical and Neotropical).

Keywords

Mansoura Journal of Biology
Volume 53, Issue 4
December 2021
Pages 10-20

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