نتایج جستجو برای: species changes and species
تعداد نتایج: 16982894 فیلتر نتایج به سال:
Over-grazing may induce changes in the dynamics of plant residue carbon and soil organic carbon (SOC). The objective of this study was to evaluate the litter quality of three dominant pasture species, and the relationship between litter quality and C dynamics under different range managements in native rangelands of SabzKou. Aboveground litters from three dominant species including, Agropyron i...
Due to the recent destructive pressures on the Caspian environment, an effect on phytoplankton communities is expected in different aspects such as cell size and form. This paper aims to survey the size and form in the dominant phytoplankton species in the years of 1996, 2001, 2006, 2009, 2011 and 2012 in the Iranian coast of the Caspian Sea. Results of current study showed that the dominant sp...
Abstract Background and objectives: Prediction of species richness and diversity patterns are used to develop conservation strategies for biodiversity under regional and global environmental changes. Since modeling the distribution of plant species can provide useful and important information about identifying and introducing potential habitats of plant species, and also few studies have been ...
background & aim: the present study was to identify the medicinal plant species and introduced as one of the key priority areas for conservation and determination of endangered species were done. experimental: the method of plant collection in this region was classical method of regional plant taxonomic studies. collected plants were recognized and determined families, genera and species o...
Photosynthetic characteristics and induction of crassulacean acid metabolism (CAM) by drought stress were investigated in Sedum album, Sedum stoloniferum and Rosularia elymaitica from Crassulaceae. Titratable acidity, malate content, phosphoenolpyruvate carboxylase (PEPC) activity and gas exchange parameters were determined in plants at the end and beginning of the photoperiod. Results showed t...
the reptile's fauna of sabzevar was investigated during 10 years (2003-2013). in total 43 species belonging to 29 genera, 13families and two orders (squamata and testudines) were collected and identified. the most diverse group in the area is lizards with 23 species, followed by snakes with 18 species and the testudines with one species. the most diverse families are colubridae , lacertidae wit...
the revised checklist of reptiles for fars province, southern iran, comprises of 63 species in 41 genera, 17 families and two orders (squamata and testudines). the most diverse suborder is the sauria with 38 species or 60.31% of the herpetofauna, followed by serpentes (23 species, 36.5%) and the testudines (2 species, 3.17%). the most diverse families are the colubridae and gekkonidae with 15 a...
Increasing trend in global population and climate changes are driving forces to shift toward the use of vertical farms with artificial lighting (VFALs). The main downside of VFALs is inefficient electrical usage. High efficiency and economy cost of light-emitting diodes (LED) are going to make VFALs a promising type of farming in future. Each individual species needs unique light treatment in o...
butterflies of the inani reserve forest were studied between may 2014 and may 2015. one hundred twenty five species of butterflies belonging to 84 genera and six families (hesperiidae, papilionidae, pieridae, lycaenidae, riodinidae and nymphalidae) were recorded during this study. the highest number of species comprised family nymphalidae (38 species, 30.4%) followed by lycaenidae (35 species, ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید