Predicting past, current and future suitable habitat for endemic Hyrcanian species Populus caspica Bornm.

Alipour, Shirin; Badehian, Ziaedin; Yousefzadeh, Hamed; Asadi, Fatemeh; Espahbodi, K; Walas, Łukasz

doi:10.1007/s11056-022-09918-w

Cited by 4 publications

(1 citation statement)

References 68 publications

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“…Hyrcanian forests inscribed on the UNESCO World Heritage List contain the final remains of tertiary wide-leaved forests in western Eurasia and worldwide (UNESCO World Heritage Centre 2019; Bayranvand et al 2017;Alipour et al 2023). Hyrcanian forests are located between the north of the Alborz Mountain chains and the Caspian sea (Iran and Caucasus) (Sabeti, 1994).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the evolutionary process within Populus caspica species from Hyrcanian forests by karyotype analysis

Asadi-Corom,

Asadi,

Mirzaie-Nodoushan

2024

Caryologia

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Caspian poplar (Populus caspica Bornm.) is distributed exclusively in the Hyrcanian forests. Hyrcanian forests are the final remnants of Tertiary temperate deciduous forests in Western Eurasia and worldwide. This species plays a significant ecological role in the protection of the natural environment in Hyrcanian forests. In this research, chromosome number and karyotype details of 11 populations of the species were investigated for the first time, using fresh root cuttings collected from mature trees in different parts of the forest, located in the northern parts of Iran. Pre-treatment, fixation, hydrolyzing, and staining were conducted by α-bromonaphthalene, carnoy’s solution, 1N HCl, and hematoxylin agent, respectively. Chromosomal data were analyzed according to a nested model based on a completely randomized design. Chromosome numbers of all of the populations were the same as 2n = 38, which mostly were medium region and sub-metacentric types. Significant differences were observed between the provinces and populations, based on chromosome length grand means, arm ratios and centromere indices. The results demonstrated that structural rearrangement has occurred within the studied populations and indicated an active evolutionary process within and between populations of the species due to natural hybridization. Also, these results showed that artificial inter-specific hybridization between the P. caspica and its relative species can be employed to broaden the ecological zone of the species.

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Section: Introductionmentioning

confidence: 99%

Evaluation of the evolutionary process within Populus caspica species from Hyrcanian forests by karyotype analysis

Asadi-Corom,

Asadi,

Mirzaie-Nodoushan

2024

Caryologia

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Consequence of habitat specificity: a rising risk of habitat loss for endemic and sub-endemic woody species under climate change in the Hyrcanian ecoregion

Sękiewicz,

Salvà-Catarineu,

Walas

et al. 2024

Reg Environ Change

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Endemic species are more impacted by climate change than other taxa. However, assessing the vulnerability of endemics to these changes in some regions, such as the Hyrcanian forest, is limited, despite its importance for biodiversity and ecosystem function. To address the question of expected habitat shifts under climate change across the Hyrcanian ecoregion, we built an ensemble of species distribution models (SDM) under two emission scenarios (RCP 4.5 and RCP 8.5) for 15 endemic woody taxa. To identify the potential priority conservation areas, we also applied a spatial prioritization approach. Overall, our results suggest that the impacts of climate change are more severe on the eastern parts of the region (Golestan) and the Talysh Mountains (north-western Hyrcanian ecoregion) with over 85% and 34% loss of suitable habitats over the next 80 years. The central part of the Alborz Mountains (Mazandaran) and some areas in the Talysh Mountains could be potential climatic refugia under the future conditions for endemic taxa. The most prominent changes are expected for Ruscus hyrcanus, Gleditsia capsica, Acer velutinum, Frangula grandifolia, and Buxus hyrcana. The worrying predicted loss of suitable habitats for most studied taxa would dramatically affect the stability and resilience of forests, threatening thus biodiversity of the Hyrcanian ecoregion. We present the first estimation of the potential risks involved and provide useful support for regional climate-adaptation strategy, indicating potential conservation priority areas for maintaining and preserving its resources. Notably, only 13.4% of areas designated for conservation and management under climate change will be located within the current Hyrcanian protected areas, yet the majority of these areas are classified as low priority.

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The influence of climate and population density on Buxus hyrcana potential distribution and habitat connectivity

Alipour

Walas

2023

J Plant Res

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Changes in environmental factors, human impact, and interactions between them accelerate the extinction of woody species. Therefore, conservation programs are needed to protect endangered taxa. However, the relationship between climate, habitat fragmentation, and anthropogenic activities and their consequences are still not well understood. In this work, we aimed to evaluate the impact of climate change and human population density on the Buxus hyrcana Pojark distribution range, as well as the phenomenon of habitat fragmentation. Based on species occurrence data throughout the Hyrcanian Forests (north of Iran), the MAXENT model was employed to estimate the potential distribution and suitability changes. Morphological-spatial analysis (MSPA) and CIRCUITSCAPE were used to assess habitat fragmentation and its connectivity. According to the main results obtained from future scenarios, the potential range will significantly decrease due to the lack of suitable climatic conditions. Meanwhile, B. hyrcana may not be able to shift in potentially suitable areas because of human influence and geographic barriers. Under RCP scenarios the extent of the core area would be reduced and the edge/core ratio significantly increased. Altogether, we found negative effects of the environmental change and the human population density on the continuity of habitats of B. hyrcana. The results of the presented work may improve our knowledge connected with in situ and ex situ protection strategies.

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Predicting past, current and future suitable habitat for endemic Hyrcanian species Populus caspica Bornm.

Cited by 4 publications

References 68 publications

Evaluation of the evolutionary process within Populus caspica species from Hyrcanian forests by karyotype analysis

Evaluation of the evolutionary process within Populus caspica species from Hyrcanian forests by karyotype analysis

Consequence of habitat specificity: a rising risk of habitat loss for endemic and sub-endemic woody species under climate change in the Hyrcanian ecoregion

The influence of climate and population density on Buxus hyrcana potential distribution and habitat connectivity

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