حبیب زارع
مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی مازندران
[ 1 ] - A REVISION OF ACER MONSPESSULANUM L. IN IRAN; A NEW SUBSPECIES REPORT
The genus Acer L., consisting of 8 species and also some subspecies and varieties, is one of the most important forest trees distributed in all floristic regions of Iran. Among them, Acer monspessulanum L. by having five subspecies has the greatest range of distribution and diversity in the genus. During a study on herbarium specimens of the Research Center of Agricultural and Natural Resources o…
[ 2 ] - KARYOLOGICAL INVESTIGATIONS IN SOME SPECIES OF VICIA (FABACEAE) FROM IRAN
Mitotic chromosomes of 13 species from four sections (Cracca, Ervillia, Ervum and Variegata) of the genus Vicia subgenus Vicilla were studied. Chromosome numbers of two species: V. armena, (2n=10) and V. multijuga (2n=10) are reported for the first time. 2n=14 for V. ciceroidea is a new count for this species, the previous report was 2n=28. Karyological data are presented for all the studied spec…
[ 3 ] - PHYLLANTHUS TENELLUS (EUPHORBIACEAE), A NEW RECORD AND NATURALIZED SPECIES IN MAZANDARAN.
Phyllanthus tenellus Roxb. was lately found as naturalized species in Mazandaran province. This report represents the first record of the species for the flora of Iran. It seems that it is introduced through exotic plants commerce and often distributed in the gardens, especially in the ornamental plants nurseries. Since ornamental plants imports started in a large scale in Iran less than 50 years…
[ 4 ] - A REVIEW OF THE GENUS TILIA L. (TILIACEAE) IN IRAN, NEW RECORDS AND NEW SPECIES
Natural sites were selected as sampling areas in most parts of Hyrcanian forests to study the taxonomical parameters during 2005 – 2010. The range and frequency distribution of Tilia trees were studied via searching on the forestry projects and documents, local inquiry and finally controlling the field data towards finding the trees from each forest type during the study period. Corresponding fie…
[ 5 ] - A REVIEW OF THE GENUS ALNUS GAERTN. IN IRAN, NEW RECORDS AND NEW SPECIES
The genus Alnus Gaertn., with approximately 20 species, is of great economic importance and some of the species are as the source of timber in the north hemisphere. In the Hyrcanian forests, the trees of this genus have many critical roles especially in forest rehabilitation. Like most of woody plants in Hyrcanian forests, there are many taxonomic problems concerning the recognition of the specie…
[ 6 ] - شناسایی خزه های پوست نشین در گونۀ اندمیک لرگ (Pterocarya fraxinifolia (Poir.) Spach) و ارتباط تنوع گونه های خزه با برخی از خصوصیات فیزیکو شیمیایی پوست
خزه های پوست نشین بخش مهمی از تنوع زیستی اکوسیستم های جنگلی را شامل می شوند که متأسفانه اطلاعات کمی در رابطه با اکولوژی آن‌ها در مدیریت جنگل وجود دارد، چراکه به‌عنوان اجزای برجسته اکوسیستم های جنگلی در نظر گرفته نمی شوند. در این تحقیق ضمن شناسایی خزه های پوست نشین بر روی درخت لرگ (Pterocarya fraxinifolia (Poir.) Spach) ارتباط شاخص های تنوع گونه ای با خصوصیات فیزیکو- شیمیایی پوست این درخت مورد برر…
[ 7 ] - Application of Cocktail method in vegetation classification
This study intends to assess the application of Cocktail method in the classification of large vegetation databases. For this purpose, Buxus hyrcana dataset consisted of 442 relevés with 89 species were used and by the modified TWINSPAN. For running the Cocktail method, first primarily classification was done by modified TWINSPAN, and by performing phi analysis in the groups resulted five species…
[ 8 ] - Richness and epiphytic mosses cover variation on ironwood trees (Parrotia persica Pojark) trunks
This research was conducted to determination and assess changes in richness and cover of epiphytic mosses on ironwood trees(Parrotia persica Pojark) trunks along trunk elevation and slope aspect gradients, in lowland and protected forest of Natural Resource College of Tarbiat Modares University (Parts of western limit of Noor forest reserved). To do this, a number of 20 individual of ironwood tre…
[ 9 ] - A study of tree species diversity and flora in different altitudes and slopes of the Shirinrood river valley, Mazandaran, Iran
Study of tree diversity in forests is ecologically a fundamental issue. Shirinrood river flows as a main upstream toward Tadjan river in mountainous hyrcanian forests, Iran. The river itself, the rich, almost continuous vegetation cover in its valley, between lateral embankments. This study was carried out on forest vegetation distributed in 700 to 1700 m along the east and west river banks of Sh…
[ 10 ] - Morphological variations of genus Alnus in Iran: assessment of five new taxa
The genus Alnus has two species in old references of the flora of Iran in which two varieties and one subspecies have been recorded. However, recently, five new taxa have been described and recorded for the flora of Iran. In this study, the herbarium samples were obtained during a widespread sampling from 25 stands, ranged from the most eastern limit of alder dispersion in Golestan to the west of…
[ 11 ] - Variation in leaf morphology of Tilia spp. of in Hyrcanian forests
This research was carried out in order to investigate the presence of different species from the genus Tilia,. Phenetic analysis confirmed the presence of seven groups of leaves with distinguishable character from Tilia in Hyrcanian forests. Distinctive analysis presented the size of serrate, the presence of trichome on the leaf upper and lower surfaces and on the petiole as important discriminat…
[ 12 ] - اثر حفاظت بر تنوع زیستی گونه های چوبی در منطقۀ اشترانکوه لرستان
به‌منظور بررسی اثر حفاظت بر تنوع گونه‌های درختی و درختچه‌ای، گیاهان چوبی در سه ناحیۀ زون مرکزی، زون پیرامونی و منطقۀ حفاظت‌نشده در اشترانکوه لرستان در دامنه‌های زاگرس مرکزی در طبقۀ ارتفاعی 1600 تا 1800 متر از سطح دریا با استفاده از شاخص‌های تنوع زیستی مورد بررسی قرار گرفت. در این بررسی تعداد 10 گونۀ چوبی شناسایی شد که از این تعداد 6 گونه درختی و 4 گونه درختچه‌ای بود. از کل گونه‌های شناسایی شده، 9…
[ 13 ] - تنوع صفات ماکرومورفولوژیک برگ و بذر در سه جمعیت جنس توس در ایران
به‌منظور بررسی تنوع صفات ماکرومورفولوژیک برگ و بذر در سه جمعیت جنس توس در ایران در مجموع 1800 برگ و بذر از 90 پایۀ درختی در سه رویشگاه از تاکسون‌های این جنس اندازه‌گیری شد. 25 صفت ماکرومورفولوژی از برگ و بذر ارزیابی شد. تجزیه‌وتحلیل داده‌های کمّی با استفاده از آزمون تجزیۀ واریانس یکطرفه و طرح آماری آشیانه‌ای صورت گرفت و برای مقایسۀ چندگانۀ میانگین‌ها از آزمون دانکن استفاده شد. برای مقایسه و گروه‌ب…
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