Floristic composition and biological spectrum of Keran - a remote valley of northwestern Himalaya

2019 ◽  
Vol 39 (5) ◽  
pp. 372-379 ◽  
Author(s):  
Shiekh Marifatul Haq ◽  
Akhtar H. Malik ◽  
Anzar A. Khuroo ◽  
Irfan Rashid
Keyword(s):  
Floristic Composition ◽  
Biological Spectrum

Floristic Composition, Ecological Characteristics and Biological Spectrum of District Bannu, Khyber Pakhtunkhawa, Pakistan

2016 ◽  
Vol 54 (1) ◽  
pp. 1-11
Author(s):  
Ullah Ihsan ◽  
Siraj ud Din ◽  
Faizan Ullah ◽  
Saad Uallh Khan ◽  
Alamgir Khan ◽  
...  
Keyword(s):  
Floristic Composition ◽  
Ecological Characteristics ◽  
Biological Spectrum

Deciduous and semi-deciduous oak forests (Quercus robur, Q. petraea and Q. pyrenaica) floristic composition in the Northwest Iberian Peninsula

Biologia ◽  
2007 ◽  
Vol 62 (2) ◽  
Author(s):  
Ignacio Díaz-Maroto ◽  
P. Vila-Lameiro
Keyword(s):  
Iberian Peninsula ◽  
Vascular Plants ◽  
Quercus Robur ◽  
Castanea Sativa ◽  
Floristic Composition ◽  
Oak Forests ◽  
Species Analysis ◽  
Floristic Elements ◽  
Biological Spectrum ◽  
Northwest Iberian Peninsula

AbstractOak forests in the Northwest Iberian Peninsula represent climax communities with a high floristic diversity of vascular plants. This study presents data from 189 botanical samples randomly collected in stands of deciduous and semi-deciduous oak as Quercus robur (98), Q. petraea (50) and Q. pyrenaica (41). Within these stands, 187 species or subspecies were identified, in addition to 20 genera and 68 families, all of them present in forests of Quercus robur. A total of 126 species occur in more than five relevés. The largest number of species corresponds to Poaceae (22), Fabaceae (19) and Rosaceae (14). The biological spectrum is dominated by hemicryptophytes, with mainly Atlantic and Sub-Atlantic floristic elements. The distribution of the stands has been studied by using Two-Way Indicator Species Analysis, obtaining like pseudo-species, with shrubby and arborea form, the following ones: Fagus sylvatica, Castanea sativa, Sorbus aucuparia, Corylus avellana, Crataegus monogyna, Pyrus cordata, Erica arborea, Frangula alnus and Cytisus scoparius.

scholarly journals Association Convolvulo-Polygonetum aviculare (ass. new) in Weed Vegetation of Vineyard Region in Herzegovina

2015 ◽  
Vol 15 (3) ◽  
pp. 281
Author(s):  
Zlatan Kovačević
Keyword(s):  
Soil Moisture ◽  
Gradient Analysis ◽  
Floristic Composition ◽  
Numerical Classification ◽  
Thermophilic Species ◽  
New Association ◽  
Complete Set ◽  
Species Gradient ◽  
High Degree ◽  
Biological Spectrum

Floristic-phytocenological research of weed vegetation in vineyards of Bosnia and Herzegovina determined a new association Convolvulo-Polygonetumaviculare (ass. new). Regarding floristic character, the asso­ciation was qualified by numerous thermophilic species, and it was ranked in the mediterranean syntaxonomic unit DiplotaxionBr.-Bl. 1931 em 1936 from ordo ChenopodietaliamediterraneaBr.-Bl. 1931 em 1936. Stands association builds 56 plant species. A complete set of association is built by five species: ConvolvulusarvensisL., PolygonumaviculareL., Cynodondactylon (L.) Pers., PortulacaoleraceaL. and ChenopodiumalbumL. Biological spectrum of association shows dominance of hemi­therophytes (62,50%) and hemikryptophytes which together make up 85,71% of the species. Gradient analysis shows very little dependence of floristic composition in relation to soil moisture medium rich in minerals. The value of the coefficient of correlation points a relatively high degree of dependence floristic composition in comparison to the gradient of light and temperature. Areal spectrum of associations suggests the dominance of cosmopolitan and mediterranean group of floral elements. By means of numerical classification and ordination of stands, there may be distin­guished two groups of stands. 

scholarly journals Floristic diversity, biological spectrum of lower Tanawal, KP, Pakistan

2019 ◽  
Vol 9 (4) ◽  
pp. 505-514
Author(s):  
B. Adeela ◽  
I. Zafar ◽  
M. S. Ghulam ◽  
H. Manzoor ◽  
U. R. R. Inayat
Keyword(s):  
Plant Species ◽  
Life Form ◽  
Growth Form ◽  
Floristic Composition ◽  
Leaf Size ◽  
Floristic Diversity ◽  
Size Spectra ◽  
Field Surveys ◽  
Different Seasons ◽  
Biological Spectrum

Field surveys were carried out to evaluate the floristic diversity and biological spectrum of Lower Tanawal, District Abbottabad in different seasons during 2016-2018. This study area was divided into 80 stands on the basis of physiognomy of the vegetation. Life form classes and leaf spectra were classified following Raunkiers methodology. In total, 286 plant species belonging to 86 families were recorded, out of which herbaceous growth form dominated the study area with 187 species, followed by shrub with 54 species. Among all 86 families, Asteraceae was found to be the most dominant family with 25 species, followed by Fabaceae with 24 species and Rosaceae with 20 species. Based on life form classes, Therophytic life form was the leading class with 113 species (39.5104%), followed by Nanophanerophytes with 45 species (15.7342%). In leaf size spectra, Microphylls dominated the flora with 88 species (30.7692%), followed by Mesophyll with 81 species (28.3216%). This study shows the complete floristic composition that may be important as reference work for future ethnobotanical, ecological and conservational studies.

Life form classification and biological spectrum of Chiktan valley, North West Himalaya

2014 ◽  
Vol 15 (3) ◽  
pp. 183-187
Author(s):  
Anil K. Raina ◽  
Abdul Hamid
Keyword(s):  
Plant Species ◽  
Life Form ◽  
Floristic Composition ◽  
Maximum Deviation ◽  
North West ◽  
Complete Enumeration ◽  
Steppe Vegetation ◽  
West Himalaya ◽  
Biological Spectrum ◽  
Desert Climate

The life form classification and construction of biological spectrum of Chiktan valley of Kargil district in Ladakh region of North West Himalaya has been done after complete enumeration of floristic composition. A total of 79 plant species has been listed and grouped into various life form classes after Raunkiaer (1934). Hemicryptophytes (40.50%) and Therophytes (24.05%) dominated the landscape of this area followed by Chamaephyte (17.72%), Phanerophytes and Geophytes (8.86%). The life form spectrum was the characteristic of desert climate with scanty rainfall and steppe vegetation.  Compared to the normal biological spectrum of Raunkiaer, Phanerophytes showed maximum deviation (-37.14) followed by Hemicryptophytes (+14.50) and Therophyte (+11.50).

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