Seedling Dynamics and Population Structure of Invasive<i>Heracleum sosnowskyi</i>(Apiaceae) in Lithuania

Gudžinskas, Zigmantas; Žalneravičius, Egidijus

doi:10.5735/085.055.0412

Cited by 12 publications

(10 citation statements)

References 21 publications

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“…Such a result indicates that GA 3 application may reduce H. sosnowskyi seed-bank as well as their seedling density. It is known that seedling density and population structure depends on the availability of viable seeds in the soil seed-bank (Moravcova et al, 2007a; Moravcova et al, 2007b; Gudžinskas & Žalneravičius, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…Studies on the soil seed-bank of H. sosnowskyi in Lithuania have demonstrated that seed density directly affects the density of seedlings in spring. It is known that H. mantegazzianum average seed-bank survival is very low only after five years (Moravcova et al, 2007b; Moravcova et al, 2018; Gudžinskas & Žalneravičius, 2018). In alien species, the ability to develop a persistent seed bank is associated with their ability to naturalize and become invasive.…”

Section: Introductionmentioning

confidence: 99%

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Heracleum sosnowskyi seed development under the effect of exogenous application of GA₃

Koryznienė

Jurkonienė

Žalnierius

et al. 2019

PeerJ

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Numerous studies have demonstrated the impact of exogenous gibberellin on fleshy fruit formation, but the effect on dry fruits is not yet well known. To test the role of gibberellin (GA3) in dry fruit formation, we analysed the impact of exogenous GA3 on the invasive plant Sosnowsky’s hogweed (H. sosnowskyi Manden.) seed development and germination. Treatment of GA3 concentrations of 0.07 mM, 0.14 mM, 0.28 mM, 0.43 mM was applied to flowers at the early stage of development. Seeds were collected from treated satellite umbels. It was observed that GA3treatment did not have a significant effect on the size of H. sosnowskyi seeds, but caused various changes in their shape. The data on semi-thin longitudinal sections of H. sosnowskyi mericarps and SEM micrographs of embryos showed that the embryos in GA3 (0.43 mM) treated variants were at torpedo stage, while in control variants—mature embryos. The germination of seeds of each variant was estimated by burying them in the soil. Our studies indicated that GA3 application reduced the germination of H. sosnowskyi seed from 98.0% (control) to 16.5% (GA3 concentration 0.43 mM). It was assumed that exogenous application of GA3 had influence on the development of dry Sosnowsky’s hogweed seeds and could be used to inhibit the spread of this invasive plant.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Heracleum sosnowskyi seed development under the effect of exogenous application of GA₃

Koryznienė

Jurkonienė

Žalnierius

et al. 2019

PeerJ

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“…Therefore, Z. Gudžinskas and E. Žalneravičius studied the seeding dynamics and the population structure in Lithuania. These results are important from a theoretical point of view and can also be helpful in selection of effective measures for management and eradication of H. sosnowskyi [5]. In Lithuania, H. sosnowskyi was included in the list of plants harmful for human health that should be eradicated [6,7].…”

Section: Introductionmentioning

confidence: 99%

Identification of Heracleum sosnowskyi-Invaded Land Using Earth Remote Sensing Data

2020

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H. sosnowskyi (Heracleum sosnowskyi) is a plant that is widespread both in Lithuania and other countries and causes abundant problems. The damage caused by the population of the plant is many-sided: it menaces the biodiversity of the land, poses risk to human health, and causes considerable economic losses. In order to find effective and complex measures against this invasive plant, it is very important to identify places and areas where H. sosnowskyi grows, carry out a detailed analysis, and monitor its spread to avoid leaving this process to chance. In this paper, the remote sensing methodology was proposed to identify territories covered with H. sosnowskyi plants (land classification). Two categories of land cover classification were used: supervised (human-guided) and unsupervised (calculated by software). In the application of the supervised method, the average wavelength of the spectrum of H. sosnowskyi was calculated for the classification of the RGB image and according to this, the unsupervised classification by the program was accomplished. The combination of both classification methods, performed in steps, allowed obtaining better results than using one. The application of authors’ proposed methodology was demonstrated in a Lithuanian case study discussed in this paper.

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“…(Apiaceae), an invasive plant species, has attracted considerable attention. Its invasion has significant environmental and socioeconomic impacts in Eastern Europe and the European part of Russia (Satsyperova, 1984;Chadin et al, 2017;Ozerova & Krivosheina, 2018;Gudžinskas & Žalneraviius, 2018). A significant part of its invasion range lies between 48.6 • N in the South and 72.6 • N in the North, and it also occupies territories between 15.0 • E on the West and 69.5 • E in the East.…”

Section: Introductionmentioning

confidence: 99%

“…H. sosnowskyi plants do not have any vegetative reproduction structures. Consequently, the invasive success of this species depends directly on the number of propagules and their ability to disperse (Dalke et al, 2015;Gudžinskas & Žalneraviius, 2018).…”

Section: Introductionmentioning

confidence: 99%

A simple mechanistic model of the invasive species Heracleum sosnowskyi propagule dispersal by wind

Chadin

Dalke

Tishin

et al. 2021

PeerJ

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Background Invasive species are one of the key elements of human-mediated ecosystem degradation and ecosystem services impairment worldwide. Dispersal of propagules is the first stage of plant species spread and strongly influences the dynamics of biological invasion. Therefore, distance prediction for invasive species spread is critical for invasion management. Heracleum sosnowskyi is one of the most dangerous invasive species with wind-dispersed propagules (seeds) across Eastern Europe. This study developed a simple mechanistic model for H. sosnowskyi propagule dispersal and their distances with an accuracy comparable to that of empirical measurements. Methods We measured and compared the propagule traits (terminal velocity, mass, area, and wing loading) and release height for H. sosnowskyi populations from two geographically distant regions of European Russia. We tested two simple mechanistic models: a ballistic model and a wind gradient model using identical artificial propagules. The artificial propagules were made of colored paper with a mass, area, wing loading, and terminal velocity close to those of natural H. sosnowskyi mericarps. Results The wind gradient model produced the best results. The first calculations of maximum possible propagule transfer distance by wind using the model and data from weather stations showed that the role of wind as a vector of long-distance dispersal for invasive Heracleum species was strongly underestimated. The published dataset with H. sosnowskyi propagule traits and release heights allows for modeling of the propagules’ dispersal distances by wind at any geographical point within their entire invasion range using data from the closest weather stations. The proposed simple model for the prediction of H. sosnowskyi propagule dispersal by wind may be included in planning processes for managing invasion of this species.

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Seedling Dynamics and Population Structure of InvasiveHeracleum sosnowskyi(Apiaceae) in Lithuania

Cited by 12 publications

References 21 publications

Heracleum sosnowskyi seed development under the effect of exogenous application of GA₃

Heracleum sosnowskyi seed development under the effect of exogenous application of GA₃

Identification of Heracleum sosnowskyi-Invaded Land Using Earth Remote Sensing Data

A simple mechanistic model of the invasive species Heracleum sosnowskyi propagule dispersal by wind

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Seedling Dynamics and Population Structure of InvasiveHeracleum sosnowskyi(Apiaceae) in Lithuania

Cited by 12 publications

References 21 publications

Heracleum sosnowskyi seed development under the effect of exogenous application of GA3

Heracleum sosnowskyi seed development under the effect of exogenous application of GA3

Identification of Heracleum sosnowskyi-Invaded Land Using Earth Remote Sensing Data

A simple mechanistic model of the invasive species Heracleum sosnowskyi propagule dispersal by wind

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Heracleum sosnowskyi seed development under the effect of exogenous application of GA₃

Heracleum sosnowskyi seed development under the effect of exogenous application of GA₃