scholarly journals Invasive alien plants and Eupatorium: Biodiversity and livelihood

1970 ◽  
Vol 1 (2) ◽  
pp. 129-133 ◽  
Author(s):  
Ripu M Kunwar
Keyword(s):  
Invasive Species ◽  
Invasive Alien Species ◽  
Alien Plants ◽  
Competitive Strategies ◽  
Invasive Alien Plants ◽  
Eupatorium Adenophorum ◽  
Alien Plant ◽  
Invasive Alien Plant ◽  
Central Nepal ◽  
Eupatorium Adenophorum Spreng

Invasive alien species colonize aggressively, threatening native biodiversity. The success of invasive alien plants is due to their opportunistic exploitation of anthropogenic disturbances, the absence of natural enemies, and, frequently, their allelopathic competitive strategies. Invasive species can have a significant impact on development, affecting sustainability of livelihood, food security and essential ecosystem services and dynamics. Eupatorium adenophorum Spreng. and E. odoratum L. (forest killer, local name banmara) are unpalatable and highly competitive. They have taken hold in scattered sites throughout eastern and central Nepal, currently, they are also rapidly spreading westward. Efforts are being made to control established invasive species, but a better understanding of why species become invasive offers the possibility of taking pre-emptive measures. Key words: Invasive alien plant species, Eupatorium, biological control, livelihood Himalayan Journal of Sciences 1(2): 129-133, 2003

scholarly journals The Rate of Regeneration of Native Plant Species After Eradication of Invasive Alien Plant Species (Acacia Decurrens Willd.) in the Limpopo Province, South Africa.

2021 ◽  
Author(s):  
Melford Mbedzi ◽  
Milingoni Peter Tshisikhawe ◽  
Sebataolo Rahlao ◽  
Innocent Ndidzulafhi Sinthumule
Keyword(s):  
Plant Species ◽  
Structural Diversity ◽  
Alien Plants ◽  
Limpopo Province ◽  
Permanent Plots ◽  
Native Plant ◽  
Invasive Alien Plants ◽  
Alien Plant ◽  
Native Plant Species ◽  
Invasive Alien Plant

Abstract Riparian invasive alien plants are known to compete with native plant species for water, space, daylight, and different other resources by decreasing structural diversity of native vegetation and subsequently changing the functioning of the ecosystem. The aim of this study was to investigate the rate of native plant species recolonization after the eradication of A. decurrens. The investigation was done in the Waterberg District Municipality, Limpopo Province in a farm, which is highly infested with A. decurrens. Twenty-four permanent plots of 10 m x 10 m were constructed and the A. decurrens individuals in the plots were removed and the area was monitored for a period of 2 years. The size of quadrats was based on the size and distribution of the invasive alien plants which develop in an aggregated form and have exceptionally small canopies.

The emerging invasive alien plants of the Drakensberg Alpine Centre, southern Africa

Bothalia ◽  
2012 ◽  
Vol 42 (2) ◽  
pp. 71-85 ◽  
Author(s):  
C. Carbutt
Keyword(s):  
Competitive Ability ◽  
Plant Invasions ◽  
Alien Plants ◽  
Suitable Habitat ◽  
Invasive Alien Plants ◽  
Alien Plant ◽  
Invasive Alien Plant ◽  
Management Interventions ◽  
Study Sites ◽  
Disturbed Habitats

An ‘early detection’-based desktop study has identified 23 taxa as ‘current’ emerging invasive alien plants in the Drakensberg Alpine Centre (DAC) and suggests a further 27 taxa as probable emerging invaders in the future. These 50 species are predicted to become problematic invasive plants in the DAC because they possess the necessary invasive attributes and have access to potentially suitable habitat that could result in them becoming major invaders. Most of the ‘current’ emerging invasive alien plant species of the DAC are of a northern-temperate affinity and belong to the families Fabaceae and Rosaceae (four taxa each), followed by Boraginaceae and Onagraceae (two taxa each). In terms of functional type (growth form), most taxa are shrubs (9), followed by herbs (8), tall trees (5), and a single climber. The need to undertake a fieldwork component is highlighted and a list of potential study sites to sample disturbed habitats is provided. A global change driver such as increased temperature is predicted to not only result in extirpation of native alpine species, but to also possibly render the environment more susceptible to alien plant invasions due to enhanced competitive ability and pre-adapted traits. A list of emerging invasive alien plants is essential to bring about swift management interventions to reduce the threat of such biological invasions.

scholarly journals Documentation of Invasive Alien Plants Species of Rupandehi District, Western Nepal

2014 ◽  
Vol 2 (2) ◽  
pp. 168-175
Author(s):  
Anant Gopal Singh ◽  
Anil Sharma
Keyword(s):  
Invasive Species ◽  
Nutrient Cycling ◽  
Alien Species ◽  
Invasive Alien Species ◽  
Alien Plants ◽  
Food Crop ◽  
Invasive Alien Plants ◽  
Structure And Functions

Invasive species are non-native to the locality. They have been introduced in any area both accidentally and intentionally. Their introduction undoubtedly modifies the structure and functions of the ecosystem supply and alters the rate of nutrient cycling. Invasive alien species compete with the crop mainly for water, light, and nutrients. During study we have collected fifty-five species which are invasive and alien. They directly affect the productivity of food crop like rice, wheat, maize etc.DOI: http://dx.doi.org/10.3126/ijasbt.v2i2.10370Int J Appl Sci Biotechnol, Vol. 2(2): 168-175 

scholarly journals INVENTORY OF THE MOST INVASIVE ALIEN PLANT SPECIES OF LATVIA IN THE “DAUGAVAS LOKI” NATURE PARK

2017 ◽  
Vol 1 ◽  
pp. 246
Author(s):  
Santa Rutkovska ◽  
Irēna Pučkina ◽  
Olga Frolova
Keyword(s):  
Invasive Species ◽  
Plant Species ◽  
Invasive Plant ◽  
Alien Plants ◽  
Nature Management ◽  
Species Number ◽  
Invasive Plant Species ◽  
Invasive Alien Plants ◽  
Alien Plant ◽  
Nature Park

During the realization of the scientific research program for mapping of the most invasive plant species of Latvia in the “Daugavas Loki” nature park (NP) field surveys were carried out during spring, summer and autumn seasons in 2016. In total 100 quadrats were surveyed. Invasive alien plants are species that are non-native to an ecosystem, and may cause a negative effect on environmental quality or human health. The obtained results indicate that the number of invasive alien plants species identified in 2016, i.e. 32 species, considerably increased in comparison with data about the distribution of invasive species given in the nature management plan of the “Daugavas Loki” NP in 2010, when only three species were mentioned. Many invasive plant species have been found in the ruderal biotopes – roadsides in the territory of nature park. The species with the highest number of localities are Acer negundo L., Sambucus racemosa L. and Rumex confertus Willd. The monitoring of certain most invasive species makes it possible to assess the changes in species number and occupied area.

scholarly journals Invasive alien plants occurring in Lesotho: Their ethnobotany, potential risks, distribution and origin

Bothalia ◽  
2019 ◽  
Vol 49 (1) ◽  
Author(s):  
Khotso Kobisi ◽  
Lerato Seleteng-Kose ◽  
Annah Moteetee
Keyword(s):  
Current Knowledge ◽  
Skin Irritation ◽  
Alien Plants ◽  
Invasive Alien Plants ◽  
Food Treatment ◽  
Alien Plant ◽  
Invasive Alien Plant ◽  
The Status ◽  
Potential Risks ◽  
Ethnobotanical Uses

Background: Several recent studies have documented the ethnobotanical uses of plants used in Lesotho, in particular those used for medicinal purposes. However, these reports did not make a distinction between indigenous, naturalised or invasive alien plants. Furthermore, the existing records on the status of the occurrence of these plants in the country are not up to date.Objectives: The aim of this article is to present information on the current knowledge regarding the status of invasive alien plant species in Lesotho and to discuss their ethnobotanical uses, distribution in the country, origin and safety. We further assess the existing legislation designed to regulate the spread of such plants and make a comparison with the invasiveness and regulation of such plants in the neighbouring South Africa.Method: This article is based mainly on a literature survey of published information obtained from various databases, such as Google Scholar, Science Direct and Scopus, as well as from unpublished data such as technical reports, dissertations and theses.Results: A total of 57 species, comprising one pteridophyte, one gymnosperm and 56 flowering plants (52 dicotyledons and 4 monocotyledons) are documented. Although these plants are invasive in nature, they are utilised for a variety of purposes including food, treatment of various medical conditions, cosmetics and functional uses. However, some of the species are reported to be poisonous to both animals and humans, with a majority of the plants causing skin irritation. Most of these species are widely distributed throughout the country and most of them originated from America, Europe and Asia. Although a number of reports on the occurrence of invasive alien plants have been generated, the information therein has not yet been published.Conclusion: This study has identified knowledge gaps in terms of safety and distribution of the species, as well as shortfalls in the policies intended to regulate invasive alien species (IAS) in Lesotho. Further research in this regard is therefore recommended.

scholarly journals Assessment of the Potential of Introduction, Establishment and Further Spread of Invasive Alien Plant Species of European Union Concern in Lithuania

Botanica ◽  
2018 ◽  
Vol 24 (1) ◽  
pp. 37-48 ◽  
Author(s):  
Zigmantas Gudžinskas ◽  
Egidijus Žalneravičius ◽  
Lukas Petrulaitis
Keyword(s):  
Invasive Species ◽  
European Union ◽  
Plant Species ◽  
Alien Plant Species ◽  
Myriophyllum Aquaticum ◽  
Impatiens Glandulifera ◽  
Alien Plant ◽  
Invasive Alien Plant ◽  
Heracleum Mantegazzianum ◽  
Pennisetum Setaceum

AbstractThe list of invasive alien species of European Union concern currently includes 23 plant species. The aim of this study was to assess the potential and importance of introduction pathways for invasive alien plant species in Lithuania, to estimate probability of their establishment and further spread in the country. Analysis of all available information revealed that three species (Asclepias syriaca,Heracleum sosnowskyiandImpatiens glandulifera) currently occur in Lithuania and the latter two are widespread invasive species in the country. The remaining 20 plant species have not been registered in the wild in Lithuania so far. Four of these,Gunnera tinctoria,Lysichiton americanus,Myriophyllum aquaticumandPennisetum setaceum, are occasionally cultivated in gardens or other outdoor areas, and six species, e.g.Cabomba caroliniana,Eichhornia crassipes, Lagarosiphon major, are cultivated in aquaria or other indoor spaces. Naturalization of seven species is unlikely in the country, whereas naturalization of 13 species (Lysichiton americanus,Myriophyllum aquaticum,Pennisetum setaceum, etc.) is plausible. Five of the analysed and still not recorded species are recognized as potentially invasive in Lithuania; the invasion of five species is plausible and that of 10 species is unlikely. The most important pathway of introduction of the analysed species is ornamental gardening. Three species that have not been recorded in Lithuania, but occur in the neighbouring regions of Europe (Elodea nuttallii,Heracleum mantegazzianum,Heracleum persicum) can enter the country by natural means. Importance of permanent studies and surveys on alien plants aiming to ensure early detection and eradication of invasive species is discussed.

scholarly journals Dynamic monitoring and analysis of alien invasive land plants in autumn and winter in Qionghai Lake

2019 ◽  
Vol 118 ◽  
pp. 04016
Author(s):  
Lin Bai ◽  
Kun Yao ◽  
Yiying Yang ◽  
Jiaying Li ◽  
Qun Zhao
Keyword(s):  
Invasive Plants ◽  
Structural Changes ◽  
Ornamental Plants ◽  
Alien Plants ◽  
Dynamic Monitoring ◽  
Alternanthera Philoxeroides ◽  
Invasive Alien Plants ◽  
Eupatorium Adenophorum ◽  
Wide Range ◽  
Autumn And Winter

Qionghai Lake is the second largest freshwater lake in Sichuan Province. Invasive plants have damaged the ecological balance of Qionghai Lake. Regular investigation and monitoring of invasive alien plants in Qionghai Lake in autumn and winter. Study structural changes and trend changes. Mapping dynamic monitoring of the distribution of invasive plants. Upon investigation, a wide range of invasive plants with a large rits are Eupatorium Adenophorum, Lantana camara, Bidens alba(L.) DC, Alternanthera philoxeroides, Pharbitis purpurea(L.) Voisgt and Oxalis corniculata L. The introduction of the Tagetes erecta L as Ornamental plants, the proliferation occurred because of mismanagement. The number of Mirabilis jalapa L. is very small. Analysis of the way of invasive alien plants into the Qionghai Sea and the measures of prevention and control.

scholarly journals Status and impacts of invasive alien plant species in Parsa National Park, central Nepal

2020 ◽  
Vol 30 (1) ◽  
pp. 21-31 ◽  
Author(s):  
R. Chaudhary ◽  
B. B. Shrestha ◽  
H. Thapa ◽  
M. Siwakoti
Keyword(s):  
Alien Species ◽  
Plant Species ◽  
National Parks ◽  
National Park ◽  
Invasive Alien Species ◽  
Plant Invasions ◽  
Tree Regeneration ◽  
Alien Plant Species ◽  
Alien Plant ◽  
Invasive Alien Plant

Extent of plant invasions has been expected to be low in protected areas such as national parks due to low anthropogenic activities and high wilderness. However, recent researches across the world have revealed that plant invasions can be severe in the national parks with negative impacts on the protected species and ecosystems. Unfortunately, the status of plant invasions in the national parks of Nepal is mostly unknown. In this study, we sampled at seven locations inside the Parsa National Park (PNP) to document diversity and abundance of invasive alien plant species (IAPS) and their impacts on tree regeneration. Altogether, 130 quadrats of 10 m × 10 m were sampled. We recorded 14 IAPS in the PNP. Three of the IAPS (Chromolana odorata, Lantana camara and Mikania micrantha) were among the 100 of the world’s worst invasive alien species. C. odorata was found to be the most frequent IAPS with the highest cover. The frequency and cover of the IAPS were higher at the sites close to the settlements than at the sites away from the settlements. The species richness of the IAPS was also higher at the sites closer to the settlements than away. The sapling density of the tree species was found to have declined with the increasing cover of the IAPS suggesting that the IAPS had negatively affected tree regeneration. Our data revealed that the PNP has already witnessed massive plant invasions with widespread occurrence of three of the world’s worst invasive species. Therefore, it is high time to integrate management of invasive alien species in the management plan of the park.

scholarly journals The role of rivers and streams in the migration of alien plants into the Polish Carpathians

2011 ◽  
Vol 23 (1) ◽  
pp. 43-56 ◽  
Author(s):  
Adam Zając ◽  
Barbara Tokarska-Guzik ◽  
Maria Zając
Keyword(s):  
Alien Species ◽  
Alien Plants ◽  
Anthropogenic Factors ◽  
Invasive Alien Plants ◽  
Alien Plant ◽  
The Carpathians ◽  
Rivers And Streams ◽  
Polish Carpathians ◽  
River Valleys

The role of rivers and streams in the migration of alien plants into the Polish CarpathiansThe Carpathians are among the regions of Poland that are generally less susceptible to invasive alien plants. The factor limiting the spread of the species of this group is, above all, the mountain climate. Even species originating from other mountain regions, e.g. the HimalayanImpatiens glandulifera, have their localities only at low elevations, in the Carpathian foothills. In most cases, alien plant species migrate into the Carpathians from the lowlands. The river valleys provide the migration corridors used by alien species in the course of their progress into new territories of the upper mountain localities. The situation along some mountain rivers, where invasive alien species dominate the native vegetation, is dramatic. Their spread is facilitated not only by easy diaspore transport but also by some anthropogenic factors, such as, river engineering and the transformation of riparian habitats and progressing devastation. Currently, we can observe some invasive alien plants "in statu nascendi", developing a new, secondary range in the Carpathians (e.g.Chaerophyllum aureum) or at the foothills, along the Wisła (Vistula) and San river valleys (e.g.Eragrostis albensis). For some species, cities were the destination for the first stage of future migration, e.g.Acer negundo. In the Carpathians, where many national parks and nature reserves are located, the continuous monitoring of the spread of invasive alien plants should be one of the principal activities of botanists.

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