V. K. Misra , S. C. Sharma

Abstract

The phytogeographical analysis of the flora of north-central Uttar Pradesh was made during its floristic survey (2004-2009). A total of 944 angiospermic species belonging to 510 genera and 130 families are reported from the study area and these are classified into 13 floristic elements viz. Pantropical (27.12%), Indian (19.6%), Indo-Malayan (17.27%), Neotropical (9.32%), Tropical Indo-African (8.37%), Cosmopolitan (6.04%), Temperate (4.03%), Eurasian (3.28%), Mediterranean (2.54%), Indo-Chinese (0.85%), Austro-Asian (0.64%), Sudano-Rajasthanian (0.64%) and Saharo-Sindian (0.32%). The dominance of pantropical elements in the study area may be due to the adaptation of entrant species to the typical tropical climatic conditions prevailing during major part of the year. The phytogeographical richness of the study area may be due to its unique geographical location where different climatic zones are appearing to be merged with one another.

Keywords

North-Central Uttar Pradesh, Floristic elements, Phytogeography, Vegetation

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V. K. Misra ¹

Affiliations
1 Department of Botany, Rani Durgawati Govt. Degree College, Wadrafnagar, Dist. Balrampur, Chhattisgarh, IN

Abstract

The study area is a portion of upper Gangetic plain. The species composition of the aquatic and wetland vegetation of study area was studied and quantitative indices such as Importance Value Index (IVI), Shannon's diversity index and species richness were computed. A total of 151 species of macrophytes belonging to 91 genera and 45 families have been documented from study sites. These macrophytes were classified into six ecological groups. viz. free-floating hydrophytes (FFH), floating attached hydrophytes (FAH), suspended hydrophytes (SH), submerged attached hydrophytes (SAH), emergent amphibious hydrophytes (EAH) and wetland hydrophytes (WLH). The number of species was highest during rainy season (126 species) followed by winter season (80 species) and least during summers (33 species).

Keywords

Aquatic and Wetland Habitats, Species Composition, Species Richness, Upper Gangetic Plains, Macrophytes, Gamma Diversity.

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