نتایج جستجو برای: species diversity

تعداد نتایج: 692837  

This study was conducted to identify and classify the lichens; determine the diversity index and richness of lichens. A total of 36 species belonging to six genera under three families was identified. Lichen species were mostly found at moderate high altitudinal range with an elevation of 1,131 meters above sea level and open areas where they received adequate sunlight with high moisture and hu...

Journal: :محیط زیست طبیعی 0
مرضیه نوبخت دانش آموخته کارشناسی ارشد، دانشکده منابع طبیعی، دانشگاه گیلان، ایران حسن پوربابایی دانشیار دانشکده منابع طبیعی، دانشگاه گیلان، ایران مرضیه بیگم فقیر عضو هیأت علمی دانشکده علوم پایه، دانشگاه گیلان، ایران رویا عابدی دانش آموخته کارشناسی ارشد، دانشکده منابع طبیعی، دانشگاه گیلان، ایران

in order to investigate variations in plant diversity in dr. dorostkar's forest reservoir, located in gisoum talesh, 44 sampling plots were applied by the randomized-systematic method. the diameter of all tree species (dbh?5 cm) was measured in 400 m2 (20×20 m) square sampling plots. in addition, the number of individuals of shrubs and saplings (dbh?5 cm) were enumerated in circular 100 m2...

Journal: :بوم شناسی کشاورزی 0
آرش قلعه گلاب بهبهانی کورس خوشبخت لیلی تبریزی آگرین داوری هادی ویسی

biodiversity consists of wide range diversity such as genetic diversity, species diversity and ecosystem diversity. nowadays, agrobiodiversity conservation is one the most important aspects of sustainable agriculture. in this research, agrobiodiversity in farmlands, gardens and home garden systems was assessed and compared. in addition the role of home gardens as an effective strategy in in-sit...

Abas Jamshidi Bakhtar, Khosro Sagheb-Talebi Maziar Haidari, Mohamad Reza Marvi Mohajer

Fire, as a natural ecological disturbance factor in forest, this study located in the Marivan region, Northern Zagros forest, and western Iranian state of Kurdistan. In each burned and unburned area 30 circle sample plot (1000 m2) were collected by randomized–systematic method in the 100×200 m net (in total 60 plots). In every sample plot the kind of species, number of tree, the heig...

Journal: Pollution 2020

This study was conducted to identify and classify the lichens; determine the diversity index and richness of lichens. A total of 36 species belonging to six genera under three families was identified. Lichen species were mostly found at moderate high altitudinal range with an elevation of 1,131 meters above sea level and open areas where they received adequate sunlight with high moisture and hu...

ژورنال: اکوبیولوژی تالاب 2022
, ,

The objective of this paper was determining population and species diversity of water birds and waders in Gandoman wetland during one year from mid-September 2017 to mid-September 2018 using SDR-IV software. Result showed from 70 identified birds, 28 species were waterfowl and 42 species were waders. The largest population was belong to Fulica atra. Anatidae with 33.19 percent frequency was the...

Journal: :پژوهش های زراعی ایران 0
مریم جهانی کندری علیرضا کوچکی مهدی نصیری محلاتی پرویز رضوانی مقدم

in order to investigate diversity of weed species in wheat fields in eastern parts of mashhad, an investigation was made in the year 2009. wheat fields was classified based on the acreage from 3-5 ha, 5-10 ha and higher than 10 ha. sampling was made randomly by a quadrate 0.5×0.5 in 9 fields of each group from jointing to heading of wheat in tow separate stages. type and total number of weeds w...

Journal: :journal of crop protection 2014
leila ramezani mohammad mossadegh

two different microhabitats (cropped fields versus established date-palm farms) in two different cities in khuzestan province, southwestern iran, were sampled monthly during 2011-2012 in order to assess the role of anthropic uses of soil on the biodiversity of oribatid mites. a total of 17 species of oribatid mites belonging to 10 families and 15 genera were identified (nine species were collec...

Abas Jamshidi Bakhtar, Khosro Sagheb-Talebi Maziar Haidari, Mohamad Reza Marvi Mohajer

Fire, as a natural ecological disturbance factor in forest, this study located in the Marivan region, Northern Zagros forest, and western Iranian state of Kurdistan. In each burned and unburned area 30 circle sample plot (1000 m2) were collected by randomized–systematic method in the 100×200 m net (in total 60 plots). In every sample plot the kind of species, number of tree, the heig...

Abas Jamshidi Bakhtar, Khosro Sagheb-Talebi Maziar Haidari, Mohamad Reza Marvi Mohajer

Fire, as a natural ecological disturbance factor in forest, this study located in the Marivan region, Northern Zagros forest, and western Iranian state of Kurdistan. In each burned and unburned area 30 circle sample plot (1000 m2) were collected by randomized–systematic method in the 100×200 m net (in total 60 plots). In every sample plot the kind of species, number of tree, the heig...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید