Phytosociology of<i>Juniperus excelsa</i>M.Bieb. forests in Alborz mountain range in the north of Iran

Ravanbakhsh, Hooman; Hamzeh’ee, Behnam; Etemad, V; Mohadjer, M R Marvie; Assadi, Mostafa

doi:10.1080/11263504.2014.1000420

Cited by 15 publications

(11 citation statements)

References 13 publications

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“…nov. Introduction of the new subassociation increased the number of subassociations of Rhamno pallasii-Juniperetum excelsae to three ( Table 2). The subassociations already introduced, gypsophiletosum aretioidis and ajugetosum chamaecisti, were restricted to the rocky habitat and the mountains to dry plains, respectively (Ravanbakhsh et al, 2016), while cotoneastretosum kotschyi is located in the sandy-loam soil and mountainous areas far from the dry plains. According to the literature, different species of Cotoneaster appear with Rhamnus species in different syntaxa together and sometimes with Juniperus (Kaya, 1999;Abido & Kurbaisa, 2003;Togonidze, 2011) which reflects the phytosociological relationship amongst these genera.…”

Section: Discussion Vegetationmentioning

confidence: 99%

“…Cotoneaster nummularius in Querco vulcanicae-Juniperetum excelsae in Turkey (Kargioglu & Tatli, 2005;Ozkan et al, 2010) and in Cotoneastro nummulariis-Juniperetum excelsae in Iran (Ravanbakhsh et al, 2016); C. integerrimus Medik. as a characteristic species of Pino-Juniperetea Rivas-Martinez 1964 in the Central and Eastern Mediterranean region (Brullo et al, 2001) and in Pistacieto-Juniperetum of Georgia (Togonidze, 2011) and C. racemiflora in Juniper forests of the Himalayas (Ahmed, 2006).…”

Section: Discussion Vegetationmentioning

confidence: 99%

“…A total of 27 relevés were taken. The recognition of plant species was performed using Flora of Iran (Assadi, 1988(Assadi, -2016 and Flora Iranica (Rechinger, 1963(Rechinger, -2005.…”

Section: Data Collection and Analysismentioning

confidence: 99%

“…and occasionally Paliurus spina-christi Mill. occur with Juniper trees (Zohary, 1973;Klein, 2001;Kartoolinejad & Moshki, 2014;Ravanbakhsh et al, 2016). It is believed that these forest stands and scattered Juniper trees were originally steppe forests that were likely a dominant vegetation type in all southern slopes of the Alborz Mountains (Zohary, 1973).…”

Section: Introductionmentioning

confidence: 99%

“…forests (Beals, 1965). Some species of Cotoneaster were considered as protected shrubs of the Polish Sudety Mountains (Boratyński et al, 1999 (Ravanbakhsh et al, 2016). Cotoneaster racemiflora K.Koch.…”

Section: Introductionmentioning

confidence: 99%

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Ecology and phytosociology of Cotoneaster shrublands in Central Alborz of Iran

Ravanbakhsh¹,

Hamzeh’ee²,

Moshki³

2017

Dendrobiology

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Abstract:The genus Cotoneaster is considered an important taxon in the woodlands of the Mediterranean and Irano-Turanian regions. Some species of this genus were reported from the Irano-Turanian alpine woodlands. Irano-Turanian mountainous wood and shrublands have a great importance in terms of water and soil conservation, biodiversity and plant richness. There is a lack of quantitative and qualitative statistics available for many of these ecosystems. This research focused on the ecology and phytosociology of Cotoneaster shrublands in central Alborz (Iran), with emphasis on C. kotschyi, an endemic drought-tolerant species. Data was collected based on the Braun-Blanquet method. TWINSPAN was used to analyse the vegetation data. Species-environment analysis was performed by CCA (Canonical Correspondence Analysis) and oneway ANOVA. Relevés were classified into three distinct groups regarding their floristic composition. By organizing the phytosociological table, a new subassociation was defined and named as Rhamno pallasii-Juniperetum excelsae cotoneastretosum kotschyi subass. nova. This syntaxon is distributed in the range of 2,200-2,430 m a.s.l. between two other groups, i.e. Cotoneastro nummulariis-Juniperetum excelsae and Rhamno pallasii-Juniperetum excelsae. Cotoneaster kotschyi ecologically is near to Rhamnus pallasii which is characteristic for Juniper communities on shallow soils and stony lands. Among the environmental variables, slope, soil texture, pH, lime and saturation percent are the most important distinguishing factors of this subassociation. So, the new syntaxon is found in the habitat with an average slope of 60%, sandy-loam soils and pH and lime percent less than other studied communities. The subassociation cotoneastretosum kotschyi has a higher amount of sand content compared to the other vegetation groups. Cotoneaster nummularius is an indicator of vegetation communities with relatively evolved soils. However, C. kotschyi grows in poor and shallow soils. C. kotschyi is a differential species which indicates the variability between the two main Alpine associations of the Irano-Turanian region. It is an appropriate species for plantation in the semi-arid mountainous areas. The ecological demands and the floristic composition of these plantations are determined in this article.

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Section: Discussion Vegetationmentioning

confidence: 99%

Section: Discussion Vegetationmentioning

confidence: 99%

“…A total of 27 relevés were taken. The recognition of plant species was performed using Flora of Iran (Assadi, 1988(Assadi, -2016 and Flora Iranica (Rechinger, 1963(Rechinger, -2005.…”

Section: Data Collection and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ecology and phytosociology of Cotoneaster shrublands in Central Alborz of Iran

Ravanbakhsh¹,

Hamzeh’ee²,

Moshki³

2017

Dendrobiology

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The Alborz Mountain Range

Noroozi

Talebi

Doostmohammadi

2020

Plant and Vegetation

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A bioclimatic characterization of high elevation habitats in the Alborz mountains of Iran

Noroozi

Körner

2018

Alp Botany

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The Alborz mountains in N-Iran at 36° N rise from the Caspian Sea to 5671 m a.s.l., with warm-temperate, winter-deciduous forests in the lower montane belt in northern slopes, and vast treeless terrain at higher elevation. A lack of rainfall (ca. 550 mm at high elevations) cannot explain the absence of trees. Hence, it is an open question, which parts of these mountains belong to the alpine belt. Here we use bioclimatic data to estimate the position of the potential climatic treeline, and thus, define bioclimatologically, what is alpine and what is not. We employed the same miniature data loggers and protocol that had been applied in a Europe-wide assessment of alpine climates and a global survey of treeline temperatures. The data suggest a potential treeline position at ca. 3300 m a.s.l., that is ca. 900 m above the upper edge of the current oak forest, or 450 m above its highest outposts. The alpine terrain above the climatic treeline position shows a temperature regime comparable to sites in the European Alps. At the upper limit of angiosperm life, at 4850 m a.s.l., the growing season lasted 63 days with a seasonal mean root zone temperature of 4.5 °C. We conclude that (1) the absence of trees below 2850 m a.s.l. is clearly due to millennia of land use. The absence of trees between 2850 and 3300 m a.s.l. is either due to the absence of suitable tree taxa, or the only potential regional taxon for those elevations, Juniperus excelsa, had been eradicated by land use as well. (2) These continental mountains provide thermal life conditions in the alpine belt similar to other temperate mountains. (3) Topography and snow melt regimes play a significant role for the structure of the alpine vegetation mosaics.Electronic supplementary materialThe online version of this article (10.1007/s00035-018-0202-9) contains supplementary material, which is available to authorized users.

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Phytosociology ofJuniperus excelsaM.Bieb. forests in Alborz mountain range in the north of Iran

Cited by 15 publications

References 13 publications

Ecology and phytosociology of Cotoneaster shrublands in Central Alborz of Iran

Ecology and phytosociology of Cotoneaster shrublands in Central Alborz of Iran

The Alborz Mountain Range

A bioclimatic characterization of high elevation habitats in the Alborz mountains of Iran

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