scholarly journals Geographical distribution of the dispersal ability of alien plant species in China and its socio-climatic control factors

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Quanlai Zhou ◽  
Jing Wu ◽  
Xue Cui ◽  
Xuehua Li ◽  
Zhimin Liu ◽  
...  
Keyword(s):  
Geographical Distribution ◽  
Plant Species ◽  
Climatic Factors ◽  
Dispersal Ability ◽  
Alien Plant Species ◽  
Alien Plant ◽  
Control Factors ◽  
Anthropogenic Dispersal ◽  
Climatic Control ◽  
The Relationship

AbstractDispersal ability is important for the introduction, establishment, and spread of alien plant species. Therefore, determination of the geographical distribution of the dispersal ability of such species, and the relationship between dispersal ability and socio-climatic factors are essential to elucidate the invasion strategies of the alien plant species. Analytic hierarchy process and inventory, risk rank, and dispersal mode data available on Chinese alien plant species were used to determine their dispersal ability, the geographical distribution thereof, and the relationship between socio-climatic factors and dispersal ability. High-risk alien plant species had a higher natural dispersal ability (or several natural dispersal modes) but a lower anthropogenic dispersal ability (or few anthropogenic dispersal modes) than low-risk alien plant species. The geographical distribution of the dispersal ability of the alien plant species showed an inverse relationship with species density. Alien plant species with low dispersal ability (i.e., with fewer dispersal modes and distribution in the southeast) showed a tendency to adapt to environments with mild climates, while those with high dispersal ability (i.e., with more disposal nodes and distribution in the northwest) showed a tendency to adapt to harsh environments. It is essential for land managers and policy makers to understand the geographical distribution of the dispersal ability of alien plant species and their socio-climatic control factors to formulate strategies to control the natural and anthropogenic dispersal of such plants.

scholarly journals Trait–environment relationships of plant species at different stages of the introduction process

NeoBiota ◽  
2020 ◽  
Vol 58 ◽  
pp. 55-74
Author(s):  
Marija Milanović ◽  
Sonja Knapp ◽  
Petr Pyšek ◽  
Ingolf Kühn
Keyword(s):  
Land Cover ◽  
Alien Species ◽  
Plant Species ◽  
Functional Traits ◽  
Environmental Conditions ◽  
Native Species ◽  
Alien Plant Species ◽  
Alien Plant ◽  
Non Invasive ◽  
The Relationship

The success of alien plant species can be attributed to differences in functional traits compared to less successful aliens as well as to native species, and thus their adaptation to environmental conditions. Studies have shown that alien (especially invasive) plant species differ from native species in traits such as specific leaf area (SLA), height, seed size or flowering period, where invasive species showed significantly higher values for these traits. Different environmental conditions, though, may promote the success of native or alien species, leading to competitive exclusion due to dissimilarity in traits between the groups. However, native and alien species can also be similar, with environmental conditions selecting for the same set of traits across species. So far, the effect of traits on invasion success has been studied without considering environmental conditions. To understand this interaction we examined the trait–environment relationship within natives, and two groups of alien plant species differing in times of introduction (archaeophytes vs. neophytes). Further, we investigated the difference between non-invasive and invasive neophytes. We analyzed the relationship between functional traits of 1,300 plant species occurring in 1000 randomly selected grid-cells across Germany and across different climatic conditions and land-cover types. Our results show that temperature, precipitation, the proportion of natural habitats, as well as the number of land-cover patches and geological patches affect archaeophytes and neophytes differently, regarding their level of urbanity (in neophytes negative for all non-urban land covers) and self-pollination (mainly positive for archaeophytes). Similar patterns were observed between non-invasive and invasive neophytes, where additionally, SLA, storage organs and the beginning of flowering were strongly related to several environmental factors. Native species did not express any strong relationship between traits and environment, possibly due to a high internal heterogeneity within this group of species. The relationship between trait and environment was more pronounced in neophytes compared to archaeophytes, and most pronounced in invasive plants. The alien species at different stages of the invasion process showed both similarities and differences in terms of the relationship between traits and the environment, showing that the success of introduced species is context-dependent.

Invasion patterns of seven alien plant species along roadsides in southern mountainous areas of Yunnan Province

2008 ◽  
Vol 16 (4) ◽  
pp. 369 ◽  
Author(s):  
Zhao Jinli ◽  
Ma Youxin ◽  
Zhu Hua ◽  
Li Hongmei ◽  
Li Wenjun ◽  
...  
Keyword(s):  
Plant Species ◽  
Yunnan Province ◽  
Mountainous Areas ◽  
Alien Plant Species ◽  
Alien Plant ◽  
Invasion Patterns

Does the invasion of Northern Red Oak Quercus rubra in parkland influence the diversity of birds?

Biologia ◽  
2017 ◽  
Vol 72 (2) ◽  
Author(s):  
Emilia Grzędzicka ◽  
Katarzyna Kowalik ◽  
Barbara Bacler-Żbikowska
Keyword(s):  
Plant Species ◽  
Bird Species ◽  
Coal Industry ◽  
Alien Plants ◽  
Forest Birds ◽  
Bird Diversity ◽  
Red Oak ◽  
Northern Red Oak ◽  
Alien Plant Species ◽  
Alien Plant

AbstractInvasive plants are non-native, but in most cases naturalised, species that have successfully spread outside of their native range. Aliens invaded all habitats, are competing with native plants, thus, after the direct destruction of habitats, invasions are recognised as the second largest danger for biodiversity. Northern Red Oak is one of the most common invasive tree species dispersed primarily by birds, but new studies have shown that it is also spread continuously in a forest stand. The main aim of our research was to check how strong is the invasion of Northern Red Oak in Silesia Park, where it was introduced together with other alien plant species, and how this invasion interacts with bird diversity. Silesia Park was created 65 years ago on the surface largely ravaged by coal industry. Because many studies indicate birds as vectors of alien plants invasion, we examined the bird fauna in a described area, looking for species that can contribute to spreading oaks. Research showed the diversity of 50 bird species. Surface with a presence of Northern Red Oak was characterised by greater participation of alien plant species than the patch of natural forest, which existed there long before the park creation. The greatest bird diversity was found in the most natural part of Silesia Park, and the lowest in the area of invasion, especially in the case of species classified as “forest birds”. The presence of alien plants increased number of “non-forest” birds, mostly synanthropic species. We also found that Northern Red Oak spreads by spontaneous seed dispersal.

scholarly journals Dynamics of invasive alien plant species in China under climate change scenarios

2021 ◽  
Vol 129 ◽  
pp. 107919
Author(s):  
Wenqin Tu ◽  
Qinli Xiong ◽  
Xiaoping Qiu ◽  
Yongmei Zhang
Keyword(s):  
Climate Change ◽  
Plant Species ◽  
Climate Change Scenarios ◽  
Alien Plant Species ◽  
Alien Plant ◽  
Invasive Alien Plant

scholarly journals New woody alien plant species recorded in Lithuania

2017 ◽  
Vol 23 (2) ◽  
pp. 153-168 ◽  
Author(s):  
Zigmantas Gudžinskas ◽  
Lukas Petrulaitis ◽  
Egidijus Žalneravičius
Keyword(s):  
Plant Species ◽  
Pinus Strobus ◽  
Celastrus Orbiculatus ◽  
Berberis Thunbergii ◽  
Alien Plant Species ◽  
Alien Plant ◽  
Thuja Occidentalis ◽  
Cornus Alba ◽  
Aralia Elata ◽  
Rhus Typhina

AbstractMany woody plant species that originate from various regions of the world have been introduced in other regions or continents and are used in ornamental gardening, silviculture, erosion control, for fruit sources or other purposes. Woody plants selected for introduction usually originate from regions with similar climate conditions; therefore, after certain time lag they start to spread outside places of cultivation, become naturalized or even invasive. In addition to 77 woody alien plant species reported in Lithuania, ten new species were recorded and analysed in this paper. Information on the native and anthropogenic ranges, first record in Lithuania, size of populations, habitats, reproduction and naturalization of Aralia elata, Berberis thunbergii, Caragana frutex, Celastrus orbiculatus, Cornus alba, Cytisus austriacus, Hydrangea arborescens, Pinus strobus, Rhus typhina and Thuja occidentalis is presented. All these species have been introduced intentionally and are used mainly in ornamental gardening. Three of the reported species, Berberis thunbergii, Hydrangea arborescens and Thuja occidentalis, currently are casual species. Remaining seven species were recognized as naturalized in Lithuania, and five of these, i.e. Aralia elata, Celastrus orbiculatus, Cornus alba, Pinus strobus and Rhus typhina as well as Berberis thunbergii, which currently is treated as a casual, have very high or high probability of getting invasive. Constant survey of potential habitats, detection of new escaped alien plants, particularly of trees and shrubs, is the best way to reveal potentially dangerous species and make timely decisions for their control or eradication, if necessary.

scholarly journals Major environmental factors and traits of invasive alien plants determine their spatial distribution: a case study in Korea

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Minwoo Oh ◽  
Yoonjeong Heo ◽  
Eun Ju Lee ◽  
Hyohyemi Lee
Keyword(s):  
Environmental Factors ◽  
Alien Species ◽  
Plant Species ◽  
Functional Traits ◽  
Invasive Plants ◽  
Alien Plants ◽  
Summer Temperature ◽  
Alien Plant Species ◽  
Alien Plant ◽  
Cold Spots

Abstract Background As trade increases, the influx of various alien species and their spread to new regions are prevalent, making them a general problem globally. Anthropogenic activities and climate change have led to alien species becoming distributed beyond their native range. As a result, alien species can be easily found anywhere, with the density of individuals varying across locations. The prevalent distribution of alien species adversely affects invaded ecosystems; thus, strategic management plans must be established to control them effectively. To this end, this study evaluated hotspots and cold-spots in the degree of distribution of invasive alien plant species, and major environmental factors related to hot spots were identified. We analyzed 10,287 distribution points of 126 species of alien plant species collected through a national survey of alien species using the hierarchical model of species communities (HMSC) framework. Results The explanatory and fourfold cross-validation predictive power of the model were 0.91 and 0.75 as area under the curve (AUC) values, respectively. Hotspots of invasive plants were found in the Seoul metropolitan area, Daegu metropolitan city, Chungcheongbuk-do Province, southwest shore, and Jeju Island. Hotspots were generally found where the highest maximum summer temperature, winter precipitation, and road density were observed. In contrast, seasonality in temperature, annual temperature range, precipitation during summer, and distance to rivers and the sea were negatively correlated to hotspots. The model showed that functional traits accounted for 55% of the variance explained by environmental factors. Species with a higher specific leaf area were found where temperature seasonality was low. Taller species were associated with a larger annual temperature range. Heavier seed mass was associated with a maximum summer temperature > 29 °C. Conclusions This study showed that hotspots contained 2.1 times more alien plants on average than cold-spots. Hotspots of invasive plants tended to appear under less stressful climate conditions, such as low fluctuations in temperature and precipitation. In addition, disturbance by anthropogenic factors and water flow positively affected hotspots. These results were consistent with previous reports on the ruderal and competitive strategies of invasive plants, not the stress-tolerant strategy. Our results supported that the functional traits of alien plants are closely related to the ecological strategies of plants by shaping the response of species to various environmental filters. Therefore, to control alien plants effectively, the occurrence of disturbed sites where alien plants can grow in large quantities should be minimized, and the waterfront of rivers must be managed.

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