The influence of site factors and proximity of adjacent vegetation on tree regeneration into roadslopes

Arenas, Juan M.; Lázaro-Lobo, Adrián; Mola, Ignacio; Escudero, Adrián

doi:10.1016/j.ecoleng.2017.01.007

Cited by 11 publications

(5 citation statements)

References 58 publications

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“…However, they were not yet mature, nor were producing seeds. This may explain the fact that the sampled regenerating species must be related to the arrival of propagules from the surrounding areas, as other authors have already shown in their studies (Wurdele jr, 1997;Pinã-Rodrigues & Aoki, 2014;Arenas et al, 2017).…”

Section: Discussionmentioning

confidence: 61%

“…The similarity of the areas was almost 50% and, probably, one of the factors that affected the composition of species may be the biotic and abiotic dispersal in the ANR treatment, since the surroundings of the area were characterized by pastures and seasonal forest remnants, which may contribute to the flow of propagules (Arenas et al, 2017). In the mixed native species Tree Planting Area, abiotic dispersal may have played a critical role since S. polyphylla was very abundant in this area.…”

Section: Resultsmentioning

confidence: 94%

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Drivers of Restoration Trajectory of a Community of Regenerant Plants: Natural Regeneration or Tree Seedling?

et al. 2021

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Tree plantation is the most used technique for ecological restoration, although passive restoration requires a lower investment of resources. This research aimed to compare the composition and structure of the community of regenerant plants in areas under restoration through Assisted Natural Regeneration and mixed native Tree Planting, in the same area. We randomly placed 12 plots of 100 m² each and sampled all the regenerating individuals found within them. We compared both restoration methods regarding growth pattern, dispersal syndromes, and successional groups. In both methodologies, trees and shrubs were the most abundant growth forms. The pioneer successional class was the most abundant in number of individuals for both treatments. We concluded that the two restoration methods allowed the regeneration of native species. We propose that Assisted Natural Regeneration is a viable restoration strategy, capable of boosting the initial processes of the community, especially in a matrix surrounded by remaining forests.

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Section: Discussionmentioning

confidence: 61%

Section: Resultsmentioning

confidence: 94%

Drivers of Restoration Trajectory of a Community of Regenerant Plants: Natural Regeneration or Tree Seedling?

et al. 2021

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“…In addition, roadside habitats had higher soil bulk density values due to roadside compaction after mountain road construction. Changes in soil pH value and bulk density can affect the use of nitrogen, phosphorus and other minor cations by plants ( Auerbach et al., 1997 ; Johnston and Johnston, 2004 ), so they are determining factors in the composition of roadside plants ( Arenas et al., 2017 ). These results are consistent with the results found here, with changes in soil pH value, soil bulk density, soil organ matter and NO3 – N always having stronger effects on the multiple facets of beta diversity than other variables.…”

Section: Discussionmentioning

confidence: 99%

Understanding the taxonomic homogenization of road-influenced plant assemblages in the Qionglai mountain range: A functional and phylogenetic perspective

Luo²,

Xie³

et al. 2023

Front. Plant Sci.

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As an increasingly prevalent form of human activity, roads drive the taxonomic homogenization of mountain plant assemblages, threatening global biodiversity. However, little is known about how mountain roads impact functional and phylogenetic beta diversity and how these effects are related to taxonomic homogenization. To understand the mechanism of taxonomic homogenization triggered by mountain roads, we used species absence/presence data from 76 plots (2 m*50 m) and values for 12 traits measured on 978 species from the interior and roadside communities in the Qionglai mountain range, one of the temperate regions with the highest plant species richness in the world. We used a structural equation modeling approach (SEM) to consider several surrogates of road disturbance (changes in soil physicochemical properties and the presence or absence of roads) and the causal relationship between three facets of beta diversity (taxonomic beta diversity, TBD; functional beta diversity, FBD and phylogenetic beta diversity, PBD). The results suggest that TBD, FBD and PBD respond inconsistently to mountain roads, despite strong positive correlations between the three facets of plant beta diversity in the study area. Compared with the interior community, the βtotal.tax and βtotal.func of the roadside community decreased by 2.54% and 2.22%, respectively, which were related to the reduction of species and trait richness differences and replacements; however, we did not find the same results when assessing the changes in βtotal.phy, which represents tip-weighted PBD (twPBD). Furthermore, the largest effect of roads on beta diversity was reflected in basal-weighted PBD (bwPBD), which decreased by 9.97%, indicating that those species with fewer extant relatives and longer evolutionary histories are more sensitive to mountain roads. Therefore, it is necessary to take targeted protection measures for ancient species in roadside communities. In addition, we believe that it is still necessary to take measures to prevent the further dispersal of nonnative species, although the presence of non-native species in roadside plots has led to small changes in three facets of beta diversity. There were causal relationships between the three facets of beta diversity, but their intensity and sign different in the SEM of different components of beta diversity (i.e., richness difference and replacement). Our findings suggest that the homogenization of community species composition at the landscape scale arises by a combination of adaptive responses of the functional traits of organisms to environmental consistency (e.g., reduced the differences in soil variables) caused by roads and resorting or reassembly of community clades composition due to environmental filtering. These results contribute to our comprehensive understanding of the impact of mountain roads on plant diversity, which highlights the complex relationship between human pressure and biodiversity loss.

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“…Swingle and Ulmus pumila L., growing in all slope types and geological substrates (Figure S1-SM1). Arenas et al (2017a) considered successful tree colonisation of slopes, but among the species they included was Ulmus pumila, an invasive plant in Spain. The main route of entry for invasive plants was the road itself, because usually they were not present in surrounding vegetation.…”

Section: Alien Speciesmentioning

confidence: 99%

Vegetation Change in Road Slopes in the Mediterranean Region Over 25 Years

Enríquez‐de‐Salamanca

2022

Journal of Environmental Engineering and Landscape Management

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Revegetation effectiveness requires long-term monitoring. We analysed 50 road slopes 5–8 years and 22–25 years after revegetation. Plant cover and diversity increased over time, with differences between slope types; herbaceous cover increased greatly between revegetation works and 2002 and was similar in 2002 and 2019, while woody cover decreased from revegetation to 2002 but increased greatly between 2002 and 2019. Plant colonisation was more intense on embankments, but could also be achieved on roadcuts (2.4 points on average over a maximum of 5). The presence of sown species decreased over time, but the presence of planted species remained stable. Hydroseeding had poor results in terms of the resulting plant cover, but nevertheless succeeded in slowing erosion at least sufficiently to allow early plant establishment and thus the start of colonisation. The similarity between surrounding vegetation and the slopes was greater in roadcuts. Roads are a gateway for invasive plants. Native species can improve the results, but many are missing from the market. Slopes’ plant cover changed over time; long-term studies are required.

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The influence of site factors and proximity of adjacent vegetation on tree regeneration into roadslopes

Cited by 11 publications

References 58 publications

Drivers of Restoration Trajectory of a Community of Regenerant Plants: Natural Regeneration or Tree Seedling?

Drivers of Restoration Trajectory of a Community of Regenerant Plants: Natural Regeneration or Tree Seedling?

Understanding the taxonomic homogenization of road-influenced plant assemblages in the Qionglai mountain range: A functional and phylogenetic perspective

Vegetation Change in Road Slopes in the Mediterranean Region Over 25 Years

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