Search Results for : species
Differential accumulation of physio-biochemical parameters in nitere bush (Nitraria schoberi L.) plants against salinity
The present investigation was made to study the effect of different levels of soil salinity on biochemical constituents and photosynthetic pigments of the seedlings of Nitraria schobery. Pigment components (Chl a, Crt) and Chl (a+b) content decreased up to MOS level. Beyond this level the contents decreased marginally. Organic compounds such as soluble sugars, amino […]
Reproductive biology and growth of greater forkbeard Phycis blennoides (Brünnich, 1768) in Western Algerian Coasts (Osteichthyes, Gadidae)
The Great forkbeard, Phycis blennoides (Brünnich, 1768), is a species widely distributed throughout the Mediterranean Sea and although it is of great importance for fishing industry, little is known about its reproductive characteristics. This study provides first data on reproductive characteristics of this species in the south western Mediterranean, important for management and stock assessment. […]
Frame survey and fish catch assessment of the bontanga reservoir in Northern Ghana
Reservoir fisheries play a vital role in the provision of fish protein to the people of northern Ghana. However, for 20 years, dwindling catches from these resources have become a common knowledge. The study was conducted in the Bontanga Reservoir, in the Northern Region of Ghana to mainly assess fish catches and management practices in […]
The flora of Sarigol National Park, Northern Khorassan Province, Iran
Sarigol National Park is located at Northern Khorassan province, at NW Esfarayen between 36˚ 55΄– 37˚ 02΄N, 57˚ 41΄– 57˚ 47΄E. The vascular flora of this park was investigated in the years 2008–2009. A total of 975 plant specimens were collected and 498 taxa (species, subspecies and variety), belonging to 291 genera and 70 families […]
The study of adaptability and results of medicinal plants cultivation in the conditions of Fars province collection
This research was aimed at studying economical and functional considerations, creating live gene bank of medicinal plants (collection) as well as investigation of collective cultivation and breeding of aborigine and exotic species for scientific and investigative considerations to be applied in educational, investigative, and administrative situations. It also was aimed at preventing the genetic extinction […]
Altitude and soil properties affected grassland and weed distribution
Altitude and soil properties can influence vegetation community and their density in rangelands. Knowing the relationships between plant species distribution with environmental factors would allow choosing the best strategy for the moderate of plants. The aim of this study was to investigate the correlation between plant species density with altitude and soil parameters in Khalatposhan […]
Floristic survey of weeds and rangeland plants in Khalatposhan station of Tabriz country
In order to ordination of weeds and rangeland plants, investigations were done in Khalatposhan rangeland of Tabriz county in 2013. Vegetation in each section was sampled by 176 plots (0.5 m × 0. 5 m) in grid method (20 m × 40 m). Data of presence and absence plants in different sections were analyzed through […]
Evaluation of agricultural crops biodiversity in Iran: a case study in Kermanshah province during 2003-2012
Plants and animals biodiversity affects the ecological functions of natural and agricultural systems. Therefore, reduction of biodiversity can be a serious threat for survival of ecological systems. Data were carefully provided from Ministry of Agriculture of Iran during 2003-2012. The results of diversity indexes indicated high biodiversity in Kermanshah province. They showed that a diversity […]
Food habit of hampala (Hampala macrolepidota Kuhl & Van Hasselt 1823) and its position in food web, food pyramid and population equilibrium of ranau lake, Indonesia
Hampala is an important economic fish species living in Ranau Lake. Food habit is closely related with trophic level in food web or food pyramid of fish population in the water. This study was aimed at knowing the position of food habit in food web, food pyramid, and population equilibrium in Ranau Lake. It was […]
Influence of the Chad-Cameroon pipeline on termite assemblages
The study of Chad-Cameroon pipeline disturbances on termite assemblages was conducted in 9 sites in the savannah and forest ecosystems, five years following the completion of the works. In each site an experimental design was made up of four transect belts, 100 m long by 2 m wide, two in the disturbed zone and two […]