Trends in Altitude Area of Nordmann fi r in the Western Caucasus (Basin of Belaya River) in the Relation with the Global Warming Issue

Akatov, V. V.; Akatov, P. V.; Майоров, С. В.

doi:10.15356/0373-2444-2013-2-104-114

Cited by 5 publications

(6 citation statements)

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“…Previous research also revealed a high sensitivity to climate humidity of Abies nordmanniana in the Caucasus (Litvinskaya and Salina 2012) and Picea orientalis in Turkey (Ucarcı and Bilir 2018). According to Akatov et al (2013), the suitable average annual precipitation for Abies nordmanniana ranged from 700 to 2500 mm. Our result is also consistent with a previous study of r forests in northwestern Turkey (Coban 2020), which showed that pure r forests mainly occurred between 1000 and 1600 m above sea level on mountain slopes with a steepness of about 10-20°.…”

Section: A Modelmentioning

confidence: 99%

“…Fir forests of Abies nordmanniana concentrate in the mountains of the Western Greater Caucasus (Litvinskaya and Salina 2012). In this area, r forests were prone to deforestation, bacterial diseases, and the negative impact of climate change (Akatov et al 2013;Bebiya 2015;Gornov et al 2018). The entire native range of Abies nordmanniana encompasses the Russian Caucasus, Georgia, and the northeastern Turkey.…”

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confidence: 99%

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Ecological Niche Modeling of the Main Forest-Forming Species in the Caucasus

Pshegusov

Tembotova

Чадаева

et al. 2021

Preprint

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Background: Ecological niche modeling of the main forest-forming species within the same geographic range contributes significantly to understanding the coexistence of species and the regularities of formation of their current spatial distribution. The main abiotic and biotic environmental variables, as well as species dispersal capability, affecting the spatial distribution of the main forest-forming species in the Caucasus, have not been sufficiently studied.Methods: We conducted studies within the physiographic boundaries of the Caucasus, including Russian Federation, Georgia, Armenia, and Azerbaijan. Our studies focused on ecological niche modeling of pure fir, spruce, pine, beech, hornbeam, and birch forests through species distribution modeling and the concept of the BAM (Biotic-Abiotic-Movement) diagram. We selected 648 geographic records of pure forests occurrence. ENVIREM and SoilGrids databases, statistical tools in R, Maxent were used to assess the influence of abiotic, biotic, and movement factors on the spatial distribution of the forest-forming species.Results: Geographic expression of fundamental ecological niches of the main forest-forming species depended mainly on topographic conditions and water regime. Competitor influence reduced the potential ranges of the studied species by 1.2–1.7 times to the geographic expression of their realized ecological niches. Movement factor significantly limited the areas suitable for pure forests (by 1.2–1.8 times compared with geographic expression of realized ecological niches), except for birch forests.Conclusion: Distribution maps, modeled by abiotic, biotic variables and movement factor, were the closest to the real distribution of the forest-forming species in the Caucasus. Biotic and movement factors should be considered in modeling studies of forest ecosystems if models are to have biological meaning and reality.

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Section: A Modelmentioning

confidence: 99%

mentioning

confidence: 99%

Ecological Niche Modeling of the Main Forest-Forming Species in the Caucasus

Pshegusov

Tembotova

Чадаева

et al. 2021

Preprint

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“…Studies of Caucasian populations of Abies nordmanniana are concentrated in the Western Caucasus, where the main fir forests are located. The main territories are the basins of the Pshekh, Belaya, Laba rivers on the northern macroslope of the Greater Caucasus and the upper reaches of the Mzymta, Psou, Bzych, Rioni rivers on the southern macroslope [23,24]. The researchers noted the vulnerability of the Caucasus fir forests as a result of the negative anthropogenic (deforestation), climatic and biotic (mass bacterial diseases) impacts [24,25].…”

Section: Studied Speciesmentioning

confidence: 99%

“…The main territories are the basins of the Pshekh, Belaya, Laba rivers on the northern macroslope of the Greater Caucasus and the upper reaches of the Mzymta, Psou, Bzych, Rioni rivers on the southern macroslope [23,24]. The researchers noted the vulnerability of the Caucasus fir forests as a result of the negative anthropogenic (deforestation), climatic and biotic (mass bacterial diseases) impacts [24,25]. At the same time, the main research fields of the last two decades were dendrochronology [26], the climate-driven changes in the altitude boundaries of the species [24], forest restoration [27], mapping of dark coniferous forests with Abies nordmanniana [28,29].…”

Section: Studied Speciesmentioning

confidence: 99%

“…The researchers noted the vulnerability of the Caucasus fir forests as a result of the negative anthropogenic (deforestation), climatic and biotic (mass bacterial diseases) impacts [24,25]. At the same time, the main research fields of the last two decades were dendrochronology [26], the climate-driven changes in the altitude boundaries of the species [24], forest restoration [27], mapping of dark coniferous forests with Abies nordmanniana [28,29].…”

Section: Studied Speciesmentioning

confidence: 99%

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Differentiation of ecological niches of the forest-forming species in the Caucasus

et al. 2021

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Adaptations of Abies nordmanniana, Picea orientalis, Pinus sylvestris, Fagus orientalis, and Carpinus betulus to the abiotic environmental conditions of the study area largely determined their predicted distribution in the Caucasus. The ecological niches of the species mostly coincided in two analyzed complex environmental factors (characteristics of water regime and topographic parameters). The complex humidity factor was the main factor determining the potential distribution the forest-forming species in the Caucasus (65% of the contribution in the Maxent models). Topographic ENVIREM predictors were also significant in the species distribution (20% of the contribution in the models). Abies nordmanniana and Fagus orientalis were the most sensitive to the humidity factor, while Pinus sylvestris depended largely on the topographic factors. The similarity of the distribution potential of the studied species in the Caucasus was explained largely by a high degree of overlap of ecological niches (Schoener’s D = 0.55-0.79) and their visual overlap in the orthogonal space of the analyzed ecological factors. The largest Schoener’s D indexes were observed for the pairs Pinus sylvestris – Picea orientalis, Abies nordmanniana – Picea orientalis, Fagus orientalis – Picea orientalis, and Fagus orientalis – Carpinus betulus. Carpinus betulus, Fagus orientalis and Pinus sylvestris had the widest ecological niches.

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Contemporary Changes of the Vegetation in the Mountainous Adygea as the Reflection of Global Processes

Akatov

Акатова²

2020

The Handbook of Environmental Chemistry

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Trends in Altitude Area of Nordmann fi r in the Western Caucasus (Basin of Belaya River) in the Relation with the Global Warming Issue

Cited by 5 publications

References 8 publications

Ecological Niche Modeling of the Main Forest-Forming Species in the Caucasus

Ecological Niche Modeling of the Main Forest-Forming Species in the Caucasus

Differentiation of ecological niches of the forest-forming species in the Caucasus

Contemporary Changes of the Vegetation in the Mountainous Adygea as the Reflection of Global Processes

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