Floristic composition of pistachio-woodland (Pistacieta atlantici) of Georgia (South Caucasus)

doi:10.7320/flmedit30.039

Fl. Medit.

2020

DOI: 10.7320/flmedit30.039

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Floristic composition of pistachio-woodland (Pistacieta atlantici) of Georgia (South Caucasus)

Abstract: The floristic composition of pistachio-woodland (Pistacieta atlantici) of Georgia (South Caucasus) is studied. 250 species of vascular plants, which belong to 174 genera and 50 families, were recorded. Floristic structure, composition of chorotypes and life forms are commented. Based on the systematic structure of this flora and composition of chorotypes, 3 the main directions of florogenetic connections are identified: 1. South-West Asia, 2. Mediterranean, 3. Eurasian steppe. Attenuated form shows the impact … Show more

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Cited by 2 publications

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The annotated checklist of plant species that occur in the wetland habitats of Georgia (the Caucasus)

Tedoradze,

Akobia,

Janiashvili

et al. 2023

Caucasiana

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The checklist includes 270 species that belong to 80 families and 183 genera. Each species has been annotated with the following information: life form, wetland indicator status, and location. In this checklist, Angiosperms are represented by 252 species (93.3%), Bryophytes – 10 species (3.7%), Pteridophytes – 8 (3%), Gymnosperms – 1 (0.4%). The largest families by the number of species are Cyperaceae – 39 (14.4%), Poaceae – 29 (10.7%), Rosaceae – 19 (7.1%), Asteraceae – 17 (6.3%), Fabaceae – 11 (4.1%) and Juncaceae – 11 (4.1%). The checklist is dominated by 55 Palaearctic species (20.4%), followed by 46 Holarctic (17.1%), 31 Euro-Mediterranean (11.5%), 31 Cosmopolitan (11.5%), and 27 Euro-Siberian (10.03%) species. The endemism rate is 4.8%, and the proportion of invasive and naturalized plants is 8.5%. Obligate wetland plants, mainly belonging to the families Cyperaceae and Juncaceae, make up 34.2% of the floristic composition. This is the first comprehensive published checklist of the flora of Georgian wetlands, annotated with wetland indicator values.

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The annotated checklist of plant species that occur in the wetland habitats of Georgia (the Caucasus)

Tedoradze,

Akobia,

Janiashvili

et al. 2023

Caucasiana

View full text Add to dashboard Cite

show abstract

The Pistacietea verae: a new class of open, deciduous woodlands in Middle and Southwestern Asia

Nowak,

Świerszcz,

Naqinezhad

et al. 2024

VCS

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Aims: To analyse the syntaxonomy of open, deciduous woodlands at the southern margin of the steppe zone in the colline and montane belts of the Pamir-Alai, western Tian Shan and Iranian Mountains (Irano-Turanian region). Study area: Tajikistan (Middle Asia) and Iran (Southwestern Asia). Methods: We prepared two datasets: the first dataset contained 110 relevés from Tajikistan and Iran representing pistachio groves, the second one was a comparative dataset of 1,276 relevés of pistachio groves and floristically related woody and grassland phytocoenoses from the Irano-Turanian and Mediterranean regions. These two datasets were classified separately with the modified TWINSPAN algorithm with pseudospecies cut levels 0%, 2%, 10% and 25%, and total inertia as a measure of cluster heterogeneity. Diagnostic species were identified using the phi coefficient as a fidelity measure. A NMDS ordination was used to explore the relationships between the distinguished groups. Results: We found that Pistacia open woodlands are very distinctive in terms of species composition, including numerous endemics. Our observations in Pamir-Alai, Kopet-Dagh, Zagros, Alborz and other Central and southern mountains of Iran proved that pistachio open woodlands form distinct zonal vegetation of the colline-montane belt. We thus propose a new class Pistacietea verae, with the order Pistacietalia verae and appropriate type alliance Pistacion verae, including two associations: Pistacietum verae and Pistacietum khinjuk. Conclusions: Our research has shown that the Pistacia open woodlands are a distinct vegetation typical of the Irano-Turanian region and due to its specific ecology, phytogeography and unique species composition, should be regarded as a vegetation class Pistacietea verae. It needs further examination and comparison with similar vegetation in the western Irano-Turanian and Hindu Kush regions. Recognizing the unique pistachio open woodlands as a distinct vegetation class in the Irano-Turanian region is crucial for establishing effective conservation strategies in these understudied yet ecologically significant ecosystems, spanning potentially from the Zagros, Alborz and other Central and southern Mountains of Iran to Tajikistan, Afghanistan, Uzbekistan, and Pakistan. Taxonomic reference: Plants of the World Online (POWO 2023), with World Flora Online (WFO 2023) for some problematic cases and Nobis et al. (2020) for Stipa spp. Syntaxonomic references: Mucina et al. (2016) for SE European syntaxa, Nowak et al. (2022a, 2022b) for all other syntaxa. Abbreviations: NMDS = Non-metric multidimensional scaling.

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Floristic composition of pistachio-woodland (Pistacieta atlantici) of Georgia (South Caucasus)

Cited by 2 publications

References 8 publications

The annotated checklist of plant species that occur in the wetland habitats of Georgia (the Caucasus)

The annotated checklist of plant species that occur in the wetland habitats of Georgia (the Caucasus)

The Pistacietea verae: a new class of open, deciduous woodlands in Middle and Southwestern Asia

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Floristic composition of pistachio-woodland (Pistacieta atlantici) of Georgia (South Caucasus)

Cited by 2 publications

References 8 publications

﻿﻿﻿﻿The annotated checklist of plant species that occur in the wetland habitats of Georgia (the Caucasus)

﻿﻿﻿﻿The annotated checklist of plant species that occur in the wetland habitats of Georgia (the Caucasus)

The Pistacietea verae: a new class of open, deciduous woodlands in Middle and Southwestern Asia

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Product

Resources

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The annotated checklist of plant species that occur in the wetland habitats of Georgia (the Caucasus)

The annotated checklist of plant species that occur in the wetland habitats of Georgia (the Caucasus)