Search Results for : species
Identification of the volatile composition of Stachys lavandulifolia Vahl. and Salvia spinosa L. in Isfahan climatic conditions
Stachys lavandulifolia Vahl. and Salvia spinosa L. are perennial shrub and aromatic plant belongs to Lamiaceae family. S. lavandulifolia and S.spinosa is an endemic species grown in Iran.The aim of this study was to identify of the chemical components of S. lavandulifolia and S.spinosa in Isfahan climatic conditions.The aerial parts of the plants were collected […]
Evaluation of plant diversity in pure and mixed Plantations of Cupressus arizonica – Iran
The present study was conducted to investigate the effect of tree mixture on plant biodiversity in Cupressus arizonica plantations. Plantations are primarily established in order to achieve economic objectives, such as the profitable income derived from the timber production and from other wood products. today, attention to the other services. These services include biodiversity maintenance […]
Floristic study of the rangeland Gugerd region in Khoy city (West Azarbaijan Province, NW Iran)
Gugerd rangelands located in 35 km northwest of Khoy city due to the specific conditions of climate, topography have upper biodiversity and species richness. In this research for the first time, the floristic compositions of the region were studied. To study this region flora, plant samples were collected from different parts of the region from […]
Male reproductive cycle phases (spermatogenesis) of White Chub – Squalius platyceps (Actinopterygii: Cyprinidae) from Skadar Lake (Montenegro)
Male reproductive cycle phases of Squalius platyceps from Skadar Lake, Montenegro are analysed in an annual cycle. Maturity phases of the reproductive cycle are estimated on the base of macroscopic and histological descriptions of male gonads. Temporal aspect of the maturity phases of male reproductive cycle are presented respectively. Research data for Squalius platyceps, as […]
Jumping plant lice of the family Carsidaridae (Hemiptera : Psylloidea) from Cameroon: taxonomic, faunisitic, phenology and host plants
Cameroonian psyllids members of the Carsidaridae family are revised. Six species are recognized within this family including three known species, two newly described species; one species remain undescribed because the material is not sufficient. The newly described species are Carsidara camerunensis sp.n., psyllid of Sterculia tragacantha and Mesohomotoma njinei sp.n., psyllid of Desplatsia dewevrei. Adults […]
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 […]
Effects of physiographic factors and soil properties on distribution of Ferula gummosa Boiss: case study of Karaj Kalarud Region
Ferula gummosa Boiss, belonging to Umbelliferae family, is widely distributed in mountainous regions of Iran, especially Zagros and Alborz Mountains. This species is of great economic importance due to industrial, pharmaceutical, food and forage uses. In the present study, the effect of some ecological factors associated with Ferula gummosa Boiss was investigated in one of […]
Removal of heavy metals (Cr, Cd, Ni and Pb) using fresh water algae (Utricularia tenuissima, Utricularia tenuis & Zygogonium ericetorum) from contaminated water
A study was conducted to check the efficiency of different fresh water algae for removing heavy metals (Cr, Cd, Ni and Pb) from contaminated water. The three most abundant indigenous algal species namely Ulothrix tenuissima, Oscillatoria tenuis and Zygogonium ericetorum were collected from fresh water channels of Parachinar, Pakistan and brought to the laboratory of […]
Resource management of coconut crab (Birgus latro) in liwo island, north maluku of Indonesia
Coconut crab (Birgus latro) has ecological and economical value that only found in the islands which influenced by the Pacific and Indian Ocean currents, including Liwo Island. The research was done to describe a resource management of coconut crab (Birgus latro) in Liwo island according to the distribution and biological analysis of coconut crab. Data […]
Effects of some environmental factors on annual weed shepherd’s purse (Capsella bursa-pastoris (L.) Medik.)
Shepherd’s purse (Capsella bursa-pastoris (L.) Medik.) is an annual weed species with a wide distribution in cereals of East Azarbaijan, Iran. Tow experiments were carried out based on randomised complete block design with four replications in Tabriz, Iran in 2014 to evaluate the effects of salinity and drought stress on shepherd’s purse germination and early […]