Anthropogenic factors overrule local abiotic variables in determining non-native plant invasions in mountains

Biological Invasions, Journal Year: 2021, Volume and Issue: 23(12), P. 3671 - 3686

Published: July 22, 2021

Language: Английский

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Human impact, climate and dispersal strategies determine plant invasion on islands

Journal of Biogeography, Journal Year: 2021, Volume and Issue: 48(8), P. 1889 - 1903

Published: May 4, 2021

Abstract Aim Biological invasions are likely determined by species dispersal strategies as well environmental characteristics of a recipient region, especially climate and human impact. However, the contribution climatic factors, impact, in driving invasion processes is still controversial not embedded existing theoretical considerations. Here, we study how climate, strategies, impact determine plant on islands distributed all major oceans context directional ecological filtering. Location Six mountainous, tropical, subtropical three oceans: Island Hawai'i Maui (Pacific), Tenerife La Palma (Atlantic), Réunion Socotra (Indian Ocean). Taxon Vascular Plants. Methods We recorded 360 non‐native 218 plots along roadside elevational transects covering temperature, precipitation (i.e., road density) gradients islands. collected for majority calculated niche per using hypervolume approach. Results Non‐native species’ generalism mean community width) increased with precipitation, elevation but showed no relationship temperature. Increasing led to filtering resulting more generalist under high conditions. found temperature an optimum range most between 10 20°C. Niche widths prevalence certain particularly anemochory anthropochory. Main conclusions Plant tropical seems be mainly driven while little importance. Furthermore, anthropochory associated large species. Our allows detailed look at mechanisms behind non‐temperature‐limited ecosystems.

Language: Английский

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Agricultural land use curbs exotic invasion but sustains native plant diversity at intermediate levels

Scientific Reports, Journal Year: 2021, Volume and Issue: 11(1)

Published: April 16, 2021

Abstract Unveiling the processes driving exotic plant invasion represent a central issue in taking decisions aimed at constraining loss of biodiversity and related ecosystem services. The success is often linked to anthropogenic land uses warming due climate change. We studied responses native versus casual naturalised species richness landscape level, relying on large floristic survey undertaken North - Eastern Italy. Both use drove richness. Our results suggest that this scale mainly warm climatic conditions extent urban agricultural land, but with different effects naturalized species. occurrence non-linear trends showed small percentage extensive may concurrently reduce number while sustaining diversity. Plant could be potentially limited by management, focusing areas use. A more conscientious management commonly required local administrations. According our results, shift intensive implementing green infrastructures, seems win–win solution favouring controlling oversimplification flora invasion.

Language: Английский

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Effects of Soil Physico-Chemical Properties on Plant Species Diversity Along an Elevation Gradient Over Alpine Grassland on the Qinghai-Tibetan Plateau, China

Frontiers in Plant Science, Journal Year: 2022, Volume and Issue: 13

Published: Feb. 4, 2022

Elevation gradient can reflect the effects of soil physico-chemical properties on plant species diversity. Alpine grassland QTP has suffered from a serious decline in In this study, we investigated 112 sites recording community characteristics and collecting samples along an elevation (3,500–5,200 m asl) alpine meadow QTP. We analyzed composition diversity by canonical ordination spatial regression gradient. The results showed that richness overall communities decreased with increasing elevation, Simpson dissimilarity index ( β sim ) had maximum at low (3,500–4,000 m) value 0.37. Soil available nitrogen content was primary parameter affecting grassland. effect varied different elevations. For Gramineae plants (G), declined increase m), but rose middle (4,000–4,500 m). more significant limiting high (>4,500 These findings our understanding about drivers changes QTP, will provide insights into restoration sustainable management.

Language: Английский

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Contrasting patterns of intraspecific trait variability in native and non-native plant species along an elevational gradient on Tenerife, Canary Islands

Annals of Botany, Journal Year: 2020, Volume and Issue: 127(4), P. 565 - 576

Published: April 20, 2020

Non-native plant species are not restricted to lowlands, but increasingly invading high elevations. While for both native and non-native we expected variability of functional traits due the changing environmental conditions along elevational gradients, additionally assumed that characterized by a more acquisitive growth strategy, as reflecting such strategy have been found correlate with invasion success. Furthermore, typical lowland introduction coming from multiple origins should lead higher trait within populations specifically at low elevations, they might therefore occupy larger total space.

Language: Английский

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The role of arbuscular mycorrhizal fungi in nonnative plant invasion along mountain roads

New Phytologist, Journal Year: 2020, Volume and Issue: 230(3), P. 1156 - 1168

Published: Sept. 28, 2020

Summary Plant associated mutualists can mediate invasion success by affecting the ecological niche of nonnative plant species. Anthropogenic disturbance is also key in facilitating through changes biotic and abiotic conditions, but combined effect these two factors natural environments understudied. To better understand this interaction, we investigated how its interaction with mycorrhizas could impact range dynamics species mountains Norway. Therefore, studied root colonisation community composition arbuscular mycorrhizal (AM) fungi disturbed vs undisturbed plots along mountain roads. We found that roadside strongly increases fungal diversity richness while promoting AM an otherwise ecto‐mycorrhiza ericoid‐mycorrhiza dominated environment. Surprisingly, associating were present across whole elevation gradient, even above highest elevational limit plants, indicating are not currently limiting upward movement plants. conclude has a positive on richness, possibly supporting spread there no absolute limitation belowground mutualists, at high elevation.

Language: Английский

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Contrasting response of native and non‐native plants to disturbance and herbivory in mountain environments

Journal of Biogeography, Journal Year: 2021, Volume and Issue: 48(7), P. 1594 - 1605

Published: March 25, 2021

Abstract Aim Climate warming and increasing human disturbance are expected to promote non‐native plant invasions in mountain ecosystems. Although biological also be modulated by biotic interactions, it is still not clear how invertebrate herbivores can affect invasion dynamics. Using a large manipulative experiment, we aimed at testing: (1) the effect of soil elevation on native communities, (2) plant‐herbivore nitrogen deposition, driving establishment after disturbance. Location European Alps, NE Italy. Taxon Vascular plants. Methods We selected remote, uninvaded dry semi‐natural grasslands along core elevational range plants Alps (c. 100–1300 m) manipulated disturbance, herbivory. Then, followed natural under real field conditions both over one growing season. used generalized mixed‐effects models test effects experimental treatments. Results Native species showed contrasting responses elevation. Low elevations promoted success, while affecting diversity negatively. Two‐thirds sites acquired novel non‐natives Most observed were present surrounding vegetation as mature plants, indicating that propagules able reach even remote areas. While current N deposition levels did establishment, found herbivory might play an important role facilitating reducing cover. Main conclusions Our findings show highly resistant ecosystems such continuous easily invaded once resident has been removed, pressure from invertebrates amplify negative irrespective Together, these results indicate risks future mountains global change.

Language: Английский

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La vegetación de las montañas de Córdoba (Argentina) a comienzos del siglo XXI: un mapa base para el ordenamiento territorial.

Boletín de la Sociedad Argentina de Botánica, Journal Year: 2022, Volume and Issue: 57(1)

Published: March 29, 2022

Introducción y objetivos: Un mapa de vegetación detallado actualizado es clave para el ordenamiento territorial. Dada la necesidad un las Sierras Córdoba, nos propusimos: confeccionar estas montañas; describir clases identificadas; interpretar su distribución a lo largo del gradiente altitudinal discutir implicancias M&M: Construimos preliminar partir imágenes satelitales e información campo, donde discriminamos 14 unidades vegetación. Luego hacer control elaboramos final, agrupando en siete clases. Resultados: En final identificamos: bosques nativos, exóticos, matorrales pajonales, céspedes, pastizales con roca y/o suelo desnudo roquedales. Estas se discriminaron una precisión general 82,6%. Además, separamos cuerpos agua, zonas inundables, cultivos urbanas. Los matorrales, que fueron clase más extendida, abarcaron 37% paisaje, le siguieron los cultivos, cubrieron 23% territorio. nativos sólo ocuparon 5,5% área. Matorrales disminuyeron altitudinal, mientras roquedales aumentaron. Conclusiones: Sugerimos territorial montañas debería promover restauración hasta ocupar 20-40% avance urbanas manejo especies exóticas invasoras limitar expansión sobre fisonomías nativas.

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Regional effects of plant diversity and biotic homogenization in urban greenspace – The case of university campuses across China

Urban forestry & urban greening, Journal Year: 2021, Volume and Issue: 62, P. 127170 - 127170

Published: April 28, 2021

Language: Английский

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Altitude restricts the restoration of community composition and vegetation coverage of quarries on the Qinghai-Tibet Plateau

Ecological Indicators, Journal Year: 2023, Volume and Issue: 151, P. 110339 - 110339

Published: May 15, 2023

It is challenging to restore Tibetan Plateau vegetation once it has been damaged. Highway construction, necessary for economic development, have significant negative impacts on the composition, structure, and functioning of Qinghai-Tibet alpine grassland ecosystem. However, there uncertainty regarding extent ecosystem damage in this region, such as whether quarries dug during highway construction may be restored how recovery varies with increasing altitude. We conducted a transect survey 39 quarry-restored grasslands reseeded Elymus nutans adjacent paired natural Gongyu S308 highways (2800–5100 m above sea level). By comparing community height, coverage, species composition between grasslands, we evaluated degree altitudinal gradient pattern explained limiting factors that led differences recovery. After two-year restoration, quarry coverage were not grassland. As altitude increased, continued decline, dissimilarity was rising. showed breaking point at ca. 4100 where dropped dramatically, indicating threshold construction. The soil nutrients decreased significantly Structural equation modelling indicated by reducing temperature nutrients. Due limitations single sowing, low nutrient availability, effect Therefore, propose permafrost Plateau, should avoid operation high altitudes. When exceeds certain height (e.g., study), do recommend excavating destroy grasslands.

Language: Английский

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