Improving the prevention of alien plant invasion in the EPPO region: the need to focus on highly invasive plants with (still) limited distribution - examples from Israel

EPPO Bulletin ◽  
2016 ◽  
Vol 46 (2) ◽  
pp. 341-347 ◽  
Author(s):  
J. M. Dufour-Dror
Keyword(s):  
Invasive Plants ◽  
Plant Invasion ◽  
Alien Plant ◽  
Limited Distribution

scholarly journals Alien invasive plants in Belgian limestone quarries

2019 ◽  
pp. 160-164
Author(s):  
Arnaud Monty ◽  
Alexis Jorion ◽  
Carline Pitz ◽  
Charly Géron ◽  
Grégory Mahy
Keyword(s):  
Invasive Plants ◽  
Plant Invasion ◽  
Alien Plants ◽  
Alien Plant ◽  
Buddleja Davidii ◽  
High Conservation ◽  
The Subject ◽  
Limestone Quarries ◽  
Senecio Inaequidens ◽  
Alien Invasive Plants

Description of the subject. Vegetation of high conservation value can establish in quarries, during or after exploitation. Alien plants could hamper this process and cause additional rehabilitation costs. However, the situation of plant invasion in quarries is largely unknown. Objectives. We aimed to assess alien plant invasion in active and abandoned quarries, and to identify the most invaded quarry sectors. Method. We surveyed 6,692 plots in 31 quarries in Belgium and recorded occurrence, density and cover of the 65 listed alien invasive plants in Belgium. Results. Fourteen species were recorded and 25 quarries contained at least one species. The two most occurring species, Buddleja davidii Franch. and Senecio inaequidens DC., were more widespread in quarries in activity. All sectors of the quarries were affected by alien plant invasion. Conclusions. Alien plant invasion in limestone quarries is highly variable, but significant. Considering the ecological potential of quarry sites, this issue should be better tackled.

scholarly journals Community Attributes Predict the Relationship between Habitat Invasibility and Land Use Types in an Agricultural and Forest Landscape

Forests ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 867 ◽  
Author(s):  
Zhou ◽  
Su ◽  
Zhong ◽  
Xie ◽  
Xu ◽  
...  
Keyword(s):  
Land Use ◽  
Invasive Plants ◽  
Plant Invasion ◽  
Canopy Openness ◽  
Stem Density ◽  
Total Abundance ◽  
Alien Plant ◽  
Mikania Micrantha ◽  
Habitat Invasibility ◽  
Land Use Types

Finding ecosystem or community level indicators for habitat invasibility may provide natural resource managers with environmentally friendly measures to control alien plant invasion; yet, ecosystem invasibility remains understudied. Here, we investigated alien plant invasion into various ecosystems representing different land use types in a subtropical peri-urban area of south China. Four invasive alien species were found from five out of the six ecosystems. Lower plant diversity in both the overstory and understory was consistently associated with more severe alien plant invasion to the ecosystems. The highest total abundance and plot occurrence of the invasive plants were found in the agroforestry ecosystem representing the highest disturbance. At plot scale, an increase in invasion severity was associated with a significant decrease in overstory stem density, species richness, and diversity, but with a significant increase in overstory plant dominance. The understory community attributes in response to the increase in invasion severity followed similar patterns, except that the stem density increased with invasion severity. Higher canopy openness and thus lower leaf area index and greater understory radiation were associated with higher invasion severity of invasive plants to the understory habitat. For predicting total abundance of the invasive species, the most important variable is land use type, while for the abundance of Lantana camara and Mikania micrantha, the most important predictor variable is overstory Berger–Parker index and canopy openness, respectively. Canopy structure and understory gap light regimes were among the most important factors determining the abundance of the worst invasive plant Mikania micrantha. Our results demonstrate that land use types with varying disturbance regimes determine the spatial heterogeneity in plant diversity and community structure, which predicts alien plant invasion and habitat invasibility; and that the severity of alien plant invasion in turn is a good indicator of habitat disturbance across the ecosystems.

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.

scholarly journals To the study of alien species in the flora of Khakassia

2020 ◽  
Author(s):  
A.L. Ebel ◽  
◽  
S.A. Sheremetova ◽  
I.A. Khrustaleva ◽  
T.O. Strelnikova ◽  
...  
Keyword(s):  
Invasive Plants ◽  
Vascular Plants ◽  
Field Studies ◽  
Alien Plants ◽  
Black Book ◽  
Alien Plant Species ◽  
Alien Plant ◽  
Scientific Network ◽  
Alien Flora ◽  
The Republic

As a result of the field studies, analysis of publications and herbarium materials, it has been established that by now the alien flora of the Republic of Khakassia includes about 140 species of vascular plants. Of this number, more than 30 species are invasive plants included in the “Black Book of Flora of Siberia” (2016). In recent years, there has been both a fairly rapid replenishment of the flora with alien plants and a noticeable dispersal of a number of invasive species across the territory of Khakassia. For the purpose of monitoring alien plant species, we use the capabilities of the international scientific network iNaturalist.org.

scholarly journals Research progress and prospect on the impacts of resource pulses on alien plant invasion

2021 ◽  
Vol 45 (6) ◽  
pp. 573-582
Author(s):  
Wen-Chao QIN ◽  
Zhi-Bin TAO ◽  
Yong-Jian WANG ◽  
Yan-Jie LIU ◽  
Wei HUANG ◽  
...  
Keyword(s):  
Plant Invasion ◽  
Research Progress ◽  
Alien Plant ◽  
Resource Pulses

scholarly journals The effects of changes in water and nitrogen availability on alien plant invasion into a stand of a native grassland species

Oecologia ◽  
2018 ◽  
Vol 188 (2) ◽  
pp. 441-450 ◽  
Author(s):  
Yanjie Liu ◽  
Min Liu ◽  
Xingliang Xu ◽  
Yuqiang Tian ◽  
Zhen Zhang ◽  
...  
Keyword(s):  
Plant Invasion ◽  
Nitrogen Availability ◽  
Alien Plant ◽  
Grassland Species ◽  
Native Grassland

The role of pathogens in plant invasions.

2020 ◽  
pp. 208-225
Author(s):  
Amy E. Kendig ◽  
S. Luke Flory ◽  
Erica M. Goss ◽  
Robert D. Holt ◽  
Keith Clay ◽  
...  
Keyword(s):  
Invasive Plants ◽  
Plant Invasion ◽  
Invasive Plant ◽  
Disease Risk ◽  
Invasion Biology ◽  
Resident Species ◽  
Introduced Plants ◽  
Novel Host ◽  
Survival And Reproduction ◽  
Agricultural Literature

Abstract Plant-pathogen interactions occur throughout the process of plant invasion: pathogens can acutely influence plant survival and reproduction, while the large densities and spatial distributions of invasive plant species can influence pathogen communities. However, interactions between invasive plants and pathogens are often overlooked during the early stages of invasion. As with introductions of invasive plants, the introduction of agricultural crops to new areas can also generate novel host-pathogen interactions. The close monitoring of agricultural plants and resulting insights can inform hypotheses for invasive plants where research on pathogen interactions is lacking. This chapter reviews the known and hypothesized effects of pathogens on the invasion process and the effects of plant invasion on pathogens and infectious disease dynamics throughout the process of invasion. Initially, pathogens may inhibit the transport of potentially invasive plants. After arrival in a new range, pathogens can facilitate or inhibit establishment success of introduced plants depending on their relative impacts on the introduced plants and resident species. As invasive plants spread, they may encounter novel pathogens and alter the abundance and geographic range of pathogens. Pathogens can mediate interactions between invasive plants and resident species and may influence the long-term impacts of invasive plants on ecosystems. As invasive plants shift the composition of pathogen communities, resident species could be subject to higher disease risk. We highlight gaps in invasion biology research by providing examples from the agricultural literature and propose topics that have received little attention from either field.

Alien plant invasion in the Indian Himalayan Region: state of knowledge and research priorities

2019 ◽  
Vol 28 (12) ◽  
pp. 3073-3102 ◽  
Author(s):  
Ravi Pathak ◽  
Vikram S. Negi ◽  
Ranbeer S. Rawal ◽  
Indra D. Bhatt
Keyword(s):  
Plant Invasion ◽  
Research Priorities ◽  
Himalayan Region ◽  
Alien Plant ◽  
Indian Himalayan Region

scholarly journals Detecting Plant Invasion in Urban Parks with Aerial Image Time Series and Residual Neural Network

2020 ◽  
Vol 12 (21) ◽  
pp. 3493
Author(s):  
Dipanwita Dutta ◽  
Gang Chen ◽  
Chen Chen ◽  
Sara A. Gagné ◽  
Changlin Li ◽  
...  
Keyword(s):  
Neural Network ◽  
Time Series ◽  
Deep Learning ◽  
Invasive Plants ◽  
Plant Invasion ◽  
Urban Parks ◽  
Aerial Image ◽  
Illumination Condition ◽  
Contextual Variation ◽  
The Difference

Invasive plants are a major agent threatening biodiversity conservation and directly affecting our living environment. This study aims to evaluate the potential of deep learning, one of the fastest-growing trends in machine learning, to detect plant invasion in urban parks using high-resolution (0.1 m) aerial image time series. Capitalizing on a state-of-the-art, popular architecture residual neural network (ResNet), we examined key challenges applying deep learning to detect plant invasion: relatively limited training sample size (invasion often confirmed in the field) and high forest contextual variation in space (from one invaded park to another) and over time (caused by varying stages of invasion and the difference in illumination condition). To do so, our evaluations focused on a widespread exotic plant, autumn olive (Elaeagnus umbellate), that has invaded 20 urban parks across Mecklenburg County (1410 km2) in North Carolina, USA. The results demonstrate a promising spatial and temporal generalization capacity of deep learning to detect urban invasive plants. In particular, the performance of ResNet was consistently over 96.2% using training samples from 8 (out of 20) or more parks. The model trained by samples from only four parks still achieved an accuracy of 77.4%. ResNet was further found tolerant of high contextual variation caused by autumn olive’s progressive invasion and the difference in illumination condition over the years. Our findings shed light on prioritized mitigation actions for effectively managing urban invasive plants.

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