Search Results for : Shape analysis
Fluctuating asymmetry as an indicator of Ecological stress and Developmental instability of Neurothemis ramburii (Odonata: Libellulidae) in Iligan City, Philippines
Odonata species are often used for biomonitoring purposes are often influenced by environmental instability in diverse ways. The degree of developmental stability of individuals and populations is most often estimated by their level of fluctuating asymmetry (FA). FA refers to a slight number and nondirectional deviations from strict bilateral symmetry of biological objects that occur […]
Assessment of physico-chemical and functional properties of native and modified “Kponan” yam (Dioscorea cayenensis-rotundata complex) cultivar starches
The starch of “Kponan” yam cultivar was isolated and was modified through oxidation, acetylation, acid modification and enzymatic modification. The various modified starches of “Kponan” yam cultivar and its native starch were characterized in terms of morphological characteristics, some proximate composition and functional properties. Results obtained showed that the starch granules were Polyhedral and Ovotriangular […]
Phytosociological study of plant species in three tropical dry deciduous forests of Birbhum District, West Bengal, India
Birbhum district of West Bengal, India harbours floristically important Northern Tropical Dry Deciduous forests and is quite enrich with phytodiversity. But no quantitative analysis of forest structure, its phytosociology and status of the plant species has been carried out in the forest areas of Birbhum district. In this scenario, an attempt has been made to […]
Genetic linkages of anthocyanin pigmentation with seed phenotype and root architecture with yield contributing traits, detected in edible pea (Pisum sativum L.)
Genetic diversity and trait correlation in pea germplasm is useful for plant breeding programs, which helps to select genetic material. Based on anthocyanin pigmentation (presence/absence), 24 pea competent lines were segregated into two major lineages. These lineages were sub-divided into 4 clusters based on seed shape and seed coat coloration. Similarly, the strong genetic linkage […]
The geometrical investigation of Tafresh fractures with emphasis on joint studies
Studied area, is an ancient structure of Central Iran which is located between the central Zagros and Alborz. Numerous fractures can be seen in the Tafresh area. Base on studying on this area, fractures of Tafresh was affected by a major fracture process zone in central Iran and the southern part of Alborz. Although many […]
Spatial distribution of ulin (Eusideroxylon zwageri Teijsm. & Binnend.) based on slope position and its stand structure in the forest area of tabalong district
Forest resources in Tabalong District has been degraded, proved by the fact that Ulin trees (Eusideroxylon zwageri) are difficult to be found. Ulin is in the status of endangered species, thus it must be protected and under the development efforts. Therefore, it needs information on Ulin spatial distribution based on the slope position and its […]
Assessment of environmental flow using morphological characteristics of river (case study: Karoon River, Iran)
The relationship between wetted perimeter and discharge is sometimes used as an expedient technique for determining the minimum flow allowable for environmental purposes. The critical minimum discharge is supposed to correspond to the point where there is a break in the shape of the curve (usually a logarithmic or power function). Below this discharge, wetted […]
Ground water quality assessment of Iranshahr for use in urban areas
With increasing population and decreasing per capita of stored water resources as well as increasing physico-chemical pollutions, the water crisis has become one of the greatest problems of the world. With regard to the fact that all the structural shapes and biochemical activities of cells depend on physico-chemical characteristics of water, pollution hazards might cause […]
Intra-species variations of Photopectoralis bindus (Family: Leiognathidae) collected from two geographical areas in East Java, Indonesia
Ponyfishes (Family: Leiognathidae) contributed ± 22% of all demersal catch in East Java, and also Indonesia. Photopectoralis bindus (Valenciennes, 1835), orangefin ponyfish, was the most dominant species in the catch. This study intended to test the hypothesis on whether separate stock can be identified from two geographical areas of about 400 km apart, with two […]
Numerical taxonomy of selected species of Pottiaceae family in Iran
To determining the phenetic similarities between 16 species of Pottiaceae family, 20 characters have been studied by numerical taxonomy. A cluster analysis based on Average Linkage method determined two main groups . Pterygoneurum ovatum made one group based on its morphological traits. Second cluster consist of two subgroups. Tortula species are under one clade and […]