scholarly journals Ochrona zasobów biosfery przed inwazyjnymi gatunkami roślin

2020 ◽  
Vol 29 (2) ◽  
pp. 141
Author(s):  
Emilia Nawrotek

<p>This study addresses the assessment of the legal model of protection against invasive plant species. Invasive alien species are one of the main risks to biodiversity and related ecosystem services. The threat to biodiversity and related ecosystem services posed by invasive alien species takes various forms. Moreover, invasive alien species have a significant impact on native species and on the structure and function of the ecosystem. There is a very low awareness of this phenomenon in Poland and worldwide. Therefore, legal instruments and appropriate knowledge are the basic elements of building a strategy for dealing with invasive alien species.</p>

Author(s):  
Ann Bogaerts ◽  
Sofie De Smedt ◽  
Sofie Meeus ◽  
Quentin Groom

When researchers and managers are asked to rank the issues that prevent adequate control of invasive species, lack of public awareness is at the top of the list (Dehnen‐Schmutz et al. 2018). It is therefore imperative to raise the general public's awareness of the potential risks of introducing alien species into the wild. Green Pioneers, a citizen science project funded by the Flemish Government, (Fig. 1) aims to address this issue in Belgium, across age groups. The project aims to Create awareness on invasive species, highlighting how invasions can be avoided and how to mitigate their impact. Improve communication between citizens and scientists on conservation and invasive plant species. Augment the quality and quantity of data on invasive species. Create awareness on invasive species, highlighting how invasions can be avoided and how to mitigate their impact. Improve communication between citizens and scientists on conservation and invasive plant species. Augment the quality and quantity of data on invasive species. The project is developing three kinds of activity, specifically to attract a broad demographic: - 'Young Pioneers', by developing tools for teachers in science, technology, engineering and mathemathics for school children from 12-15 years old. - 'Online Pioneers', through our online citizen science platform DoeDat.be, by helping with the transcription of label information on herbarium specimens, - and 'Visiteers', by inviting companies and working age people to help us in the collection and to inform them about invasive species. Finally, we will be organizing a BioBlitz in spring 2020 at Meise Botanic Garden where we will celebrate plants and all our Green Pioneers, while also spreading the message of invasive plant awareness. During our 48 hour BioBlitz, scientists, volunteers and citizens are workig together to survey the biodiversity of our Botanic Garden. Ultimately, Green Pioneers aim to encourage recording of alien species by amateur botanists and create a generation of responsible gardeners who understand the consequences of releasing invasive alien plants into the wild.


Author(s):  
Bogumiła Pawluśkiewicz ◽  
Maria Janicka ◽  
Kazimierz Piekut

Abstract The studies were carried out as the part of flooded meadows’ restoration on the Warsaw cross-section of Natura 2000 site Middle Vistula Valley. They concerned determination the possibility of restoration and improvement of species composition plant communities of meadows in river valleys by limitation growth of the invasive alien species and introducing diasporas of plant species from natural meadows. Seeding material for restoration was taken from well preserved natural Cnidion dubii meadows lying in Lower Pilica Valley in the neighborhood of Warsaw. Seeding material contained 26 native species including representative species for Cnidion dubii meadows: Cnidium dubium, Allium angulosum, Sanguisorba officinalis and Galium boreale. Three levels of seedbed preparation intensity were checked: low cutting of old vegetation; ploughing on depth about 20 cm and rototilling, removing of sward and upper soil layer thick 30 cm. Two ways of seeding material placement were also tested: sowing + rolling + mulching (covering with straw); sowing + rolling (without mulching). The applied methods of seedbed preparation and used seeding material allowed introducing of 17 plant species. Removing of topsoil was the most effective in limitation of invasive alien species occurrence and favored emergence and initial growth of Sanguisorba officinalis, Allium angulosum and Galium boreale. Ploughing and rototilling of topsoil layer effectively limited of Acer negundo occurrence and favored the growth of Cnidium dubium.


Author(s):  
Nguyễn Hợi ◽  
Trần Minh Đức ◽  
Trần Nam Thắng ◽  
Hồ Đăng Nguyên ◽  
Đinh Diễn

ABSTRACT Bim boi hoa vang (Merremia boisiana) becomes more abundant in A Luoi district, Thua Thien Hue province. This study identified the distribution of the species impacts on the habitats, and the dispersal paths. Through transect and standard plot surveys, we identified 12 species, of which 5 invasive alien species and 7 highly invasive plant species. Among these 12 species, Bim boi hoa vang has the highest impact on the habitat. They appears in most of the habitats, except for the pristine and rich forests. Distributing in clusters, they are mainly mature trees with an average root diameter of 4 - 5cm, main body length of about 20 - 30 m. They are creating a double repercussion that benefits themselves and harmful to the other species within the habitat. They significantly reduced the  number of prospective trees. They can also create other adverse conditions such as doubling the fallen branches and leaves; increasing 3 times the difference in light amplitude; increasing the ratio of secondary organisms and decomposing up to 3 - 4 times higher than in uncovered places. This species can be dispersed by wind, water, animals, human activity and self-dispersing, most feasible by the wind.


2019 ◽  
Vol 13 (1) ◽  
pp. 217-228
Author(s):  
Duniel Barrios ◽  
Edgardo Díaz ◽  
Lucas C. Majure

Four species of Consolea have been reported from the Cuban archipelago, each of which has been considered under threat of extinction. During the last three years various expeditions were carried out to try to update existing information about the conservation status of populations of the different species and their primary threats. Likewise, we revised and identified herbarium specimens from HAC, HAJB, HMC, MNHN, and NY to put together distribution maps for each species on Cuba. All native species of Consolea on Cuba are under threat of extinction/ extirpation. Consolea moniliformis is the species with the largest populations on Cuba, while C. macracantha displays the widest range of any other species on the island. Two new localities of C. macracantha were found during this study, but likewise, showed the only signs to date of attack by the invasive moth, Cactoblastic cactorum. Among the principle threats detected for species of Consolea on Cuba are exotic, invasive plant species, livestock grazing and development. We provide a key to the species on Cuba. 


2021 ◽  
Vol 9 (4) ◽  
pp. 71-95
Author(s):  
Barbara Tokarska-Guzik ◽  
Katarzyna Bzdęga ◽  
Zygmunt Dajdok ◽  
Karolina Mazurska ◽  
Wojciech Solarz

Abstract The participation of species of alien origin in the flora of individual regions of the world is increasing. A large proportion of these species pose a threat to biodiversity. Issues of the dynamics of changes in the flora and the scale and pace of the processes, with particular emphasis on the biology, ecology, chorology, and genetic variability of the populations of plants of alien origin, including those alien species which are invasive, have been the subject of many years of research in this field in Poland. The present study is an overview of the state of research on invasive plant species in Poland, including the main results of the basic and applied research which have provided the basis for (i) the preparation of a list of invasive plant species for Poland; (ii) assessing the degree of invasiveness of the species analysed, in accordance with the adoption of criteria and the development of methodological solutions. In this work, a new version of the list of invasive plant species has been prepared on the basis of earlier studies, combining theoretical and practical aspects of definition, and it is compared with the list of invasive alien plant species considered to constitute a threat to the EU and Poland as a member country. The categorization (risk assessment) of invasive alien species along with the identification of the most endangered types of natural habitats is often used in practice in the management of invasive plants in Poland. The results of our research have fed into the formulation of legal regulations at the global and regional levels.


Author(s):  
Valentina D. Poliksenova ◽  
Alexander K. Khramtsov ◽  
Ivan S. Hirilovich ◽  
Nikolai A. Lemeza ◽  
Svetlana G. Sidorova ◽  
...  

The 228 species of phytopathogenic micromycetes parasitising alien plants included in the publication «Black book of the flora of Belarus: alien harmful plants» (Minsk, 2020) were identified in the course of the conducted research. It was found that out of 322 plant species listed in this edition phytopathogenic micromycetes were found on 182 species (56.5 %). It is noted that among the phytopathogenic micromycetes only 92 species and intraspecific taxon (40.4 %) belong to the alien species of the Republic of Belarus. Obviously, these phytopathogens are highly specialised and currently parasitise only on these invasive plant species. The remaining 136 species and intraspecific taxon (59.6 %) affect both native and alien plant species.


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