Patterns of plant communities along vertical gradient in Dhauladhar Mountains in Lesser Himalayas in North-Western India

Ahmad, Mustaqeem; Uniyal, Sanjay Kr.; Batish, Daizy R.; Singh, Harminder Pal; Jaryan, Vikrant; Rathee, Sonia; Sharma, Padma; Kohli, R. K.

doi:10.1016/j.scitotenv.2020.136919

Cited by 44 publications

(29 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Overall, the numbers of species and OTUs were higher at low altitudes than high altitudes. The main reason may be that high-altitude organisms were more susceptible to environmental stress than low-altitude plants (Ahmad et al, 2020). In addition, the result also corresponded to the habitat hypothesis that AMF communities follow changes in abiotic conditions.…”

Section: Discussionsupporting

confidence: 65%

“…Besides, the highest species evenness and Shannon diversity both appeased at low altitude at 1,170 m and had a decreasing trend at mid-altitude. The reasons for this result may be that compared with high altitude and low altitude, the plant's species replacement rate was less at mid-altitude (Ahmad et al, 2020). At the same time, they are also likely affected by large-scale climate and environment forcing.…”

Section: Discussionmentioning

confidence: 98%

See 1 more Smart Citation

Molecular Diversity and Distribution of Arbuscular Mycorrhizal Fungi at Different Elevations in Mt. Taibai of Qinling Mountain

et al. 2021

View full text Add to dashboard Cite

Arbuscular mycorrhizal fungi (AMFs) play a vital role in ecosystems, especially in ecosystem variability, diversity, and function. Understanding the AMF diversity, distribution, and their driver at different altitudinal gradients is a benefit for understanding the ecological function of AMF in mountain ecosystems. In this study, we explored the AMF molecular diversity and their distribution from 660 to 3,500 m a.s.l. in Mount Taibai of Qinling Mountains based on high-throughput sequencing technology. A total of 702 operational taxonomic units (OTUs) in 103 species of AMF are isolated from soil samples, which belong to 18 identified and 1 unidentified genus in 10 families. The fungi in the genus of Glomus is the most dominant, with the occurrence frequency of 100% and the relative abundance of 42.268% and 33.048% on the species and OTU level, respectively. The AMF colonization in root could be simulated by a cubic function with the change of altitudes with the peak and trough at a.s.l. 1,170 and 2,850 m, respectively. Further, AMF diversity indices including Sob, Shannon diversity, and Pielou evenness also showed the same cubic function change trends with increasing altitude at OTU and species levels. However, the average values of diversity indices at OTU level are always higher than these at the species level. Based on the OTU level, the highest and lowest values of Shannon and Pielou indices are observed at the altitudes of 1,400 and 2,800 m, respectively. The pattern of AMF community distribution in Mt. Taibai is driven by altitude with the characteristics of more abundance in the medium- to low-altitude than high-altitude areas. In general, abundant AMF molecular diversity and species exit in different elevations of Mt. Taibai, which indicate gradient changes with elevations.

show abstract

Section: Discussionsupporting

confidence: 65%

Section: Discussionmentioning

confidence: 98%

Molecular Diversity and Distribution of Arbuscular Mycorrhizal Fungi at Different Elevations in Mt. Taibai of Qinling Mountain

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The results of this study can provide information about inter-species relations and plant responses to environmental stresses (Omelko et al, 2018;Xu et al, 2020). Different spatial structures were also linked to different ecological functions, such as biodiversity (Ahmad et al, 2020;Chi et al, 2019), water yield (Liu et al, 2018), productivity (Wang et al, 2019;Wang et al, 2020), and micro-scale atmosphere conditions (Abdi et al, 2020;Liu et al, 2016). Traditional quantitative ecology has utilized the two-dimensional (usually on the horizontal direction) coordination of individuals to parameterize the structure (Omelko et al, 2018); however, in this current study, the researchers opted to use a three-dimensional parameter, Structure Complexity Index (SCI), based on the coordination and heights of individuals.…”

Section: Ecological Functions Of Population Spatial Structuresmentioning

confidence: 77%

A Threshold-like Effect on the Interaction Between Hydrological Connectivity and Dominant Plant Population in Tidal Marsh Wetlands

Liu¹,

Liu²,

Xie³

et al. 2020

Preprint

View full text Add to dashboard Cite

Tidal marsh wetlands in the Yellow River Delta provide valuable eco-services to the local population and global ecology. However, this area is suffering from serious degradation under the stresses of social development and climate change. Hydrological connectivity, a new framework in hydrology and ecology, has been proposed as the main factor affecting the ecological processes in coastal wetlands; however, its role in hydrology-soil-vegetation interactions remains unclear. In this study, the researchers parametrically quantified the hydrological connectivity in the tidal marsh wetlands and analyzed its relationship with Phragmites australis, one of the dominant species in this area. Our results showed threshold-like effects on the interaction between hydrological connectivity and P. australis on the plot scale. When biomass is lower than 2.2 kg/m2, the population density and structure size were found to increase with hydrological connectivity. When the biomass is higher than the threshold, the plots disconnected hydrologically because of high water consumption. Compared with soil chemistry, salinity, and water soil content, hydrological connectivity in the surface soil layer is more strongly linked to the plant traits and spatial structure in the tidal marsh wetlands due to the narrow ranges of other variables. Based on the authors' analysis, the researchers do not recommend dense plantation of P. australis, especially near the freshwater sources in the tidal marsh, because of its high reproduction ability and competitive nature, which may cut the freshwater connectivity off, lowering the richness of plant species and habitat diversity.

show abstract

“…The results of this study can provide information about inter‐species relations and plant responses to environmental stresses (Omelko et al, 2018; Xu et al, 2020). Different spatial structures were also linked to different ecological functions, such as biodiversity (Ahmad et al, 2020; Chi, Sun, Fu, & Xie, 2019), water yield (Liu et al, 2018), productivity (Wang et al, 2019; Wang et al, 2020), and micro‐scale atmosphere conditions (Abdi, Hami, & Zarehaghi, 2020; Liu et al, 2016). Traditional quantitative ecology has utilized the two‐dimensional (usually on the horizontal direction) coordination of individuals to parameterize the structure (Omelko et al, 2018); however, in this current study, the researchers opted to use a three‐dimensional parameter, structure complexity index (SCI), based on the coordination and heights of individuals.…”

Section: Discussionmentioning

confidence: 99%

A threshold‐like effect on the interaction between hydrological connectivity and dominant plant population in tidal marsh wetlands

Liu

Xie

et al. 2021

Land Degrad Dev

View full text Add to dashboard Cite

Tidal marsh wetlands in the Yellow River Delta provide valuable eco‐services to the local population and global ecology. However, this area is suffering from serious degradation under the stresses of social development and climate change. Hydrological connectivity, a new framework in hydrology and ecology, has been proposed as the main factor affecting the ecological processes in coastal wetlands; however, its role in hydrology–soil–vegetation interactions remains unclear. In this study, we parametrically quantified the hydrological connectivity in the tidal marsh wetlands and analyzed its relationship with Phragmites australis, one of the dominant species in this area. Our results showed threshold‐like effects on the interaction between hydrological connectivity and P. australis on the plot scale. When biomass is lower than 2.2 kg m−2, the population density and structure size were found to increase with hydrological connectivity. When the biomass is higher than the threshold, the plots disconnected hydrologically because of high water consumption. Compared with soil chemistry, salinity, and water soil content, hydrological connectivity in the surface soil layer is more strongly linked to the plant traits and spatial structure in the tidal marsh wetlands due to the narrow ranges of other variables. Based on the Best on previous study and our analysis, we do not recommend dense plantation of P. australis, especially near the freshwater sources in the tidal marsh, because of its high reproduction ability and competitive nature, which may cut the freshwater connectivity off, lowering the richness of plant species and habitat diversity.

show abstract

Patterns of plant communities along vertical gradient in Dhauladhar Mountains in Lesser Himalayas in North-Western India

Cited by 44 publications

References 52 publications

Molecular Diversity and Distribution of Arbuscular Mycorrhizal Fungi at Different Elevations in Mt. Taibai of Qinling Mountain

Molecular Diversity and Distribution of Arbuscular Mycorrhizal Fungi at Different Elevations in Mt. Taibai of Qinling Mountain

A Threshold-like Effect on the Interaction Between Hydrological Connectivity and Dominant Plant Population in Tidal Marsh Wetlands

A threshold‐like effect on the interaction between hydrological connectivity and dominant plant population in tidal marsh wetlands

Contact Info

Product

Resources

About