Seed ecology of
            <i>Heracleum mantegazzianum</i>
            and
            <i>H. sosnowskyi</i>
            , two invasive species with different distributions in Europe.

Moravcová, Lenka; Gudžinskas, Zigmantas; Pyšek, Petr; Pergl, Jan; Perglová, Irena; Cock, Matthew J.W.; Nentwig, Wolfgang; Ravn, Hans Peter

doi:10.1079/9781845932060.0157

Cited by 16 publications

(17 citation statements)

References 15 publications

(15 reference statements)

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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%

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%

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

Koryznienė

Jurkonienė

Žalnierius

et al. 2019

PeerJ

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“…This number corresponds with our findings. Nonetheless, Moravcová et al (2007) indicated that seeds are unable to survive for more than one season due to rapid germination in spring (95.2%) and later by the rapid decay of dormant seeds, thus the species seed bank might be classified as a short-term persistent.…”

Section: Resultsmentioning

confidence: 99%

Heracleum sosnowskyi (Apiaceae) seed productivity and establishment in different habitats of central Lithuania

Baležentienė¹,

Stankevičienė²,

Snieškienė³

2014

Ekologija

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A dangerous invader Heracleum sosnowskyi successfully spreads along roads, riverbanks and has naturalized in Lithuanian habitats and plant communities. It out-competes native species, thus changing ecosystems diversity, pushing autochthone species from native habitats, decreasing biodiversity and transforming landscape. This paper aims to evaluate H. sosnowskyi spread and establishment on habitat scale in Lithuania. Data on abundance, spatial distribution and contribution of H. sosnowskyi to plant biodiversity were collected from natural and anthropogenic habitats. Another objective was to evaluate the speed of spread in an infected landscape. Local assessments of the abundance of H. sosnowskyi by estimating variables of spatial penetrating and establishment in native plant communities on an individual block scale were carried out. Four population types with different density and coverage of species individuals were found. Species abundance was structured according to the distance from highway and significantly correlated (r = 0.7) with native plant community type. This species finds opportunities for colonization and reproduction resulting in decrease of natural diversity.

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“…Sosnowsky's Hogweed comes from the eastern and central Caucasus; central, eastern and south-western Transcaucasia and north-eastern Anatolia in Turkey (Moravcová et al 2007). This plant invader combines many features that can be expected to affect various feeding guilds of birds.…”

Section: Introductionmentioning

confidence: 99%

“…Second, based on reproductive potential studied on different invasive Caucasian hogweeds, one plant may produce 5-50 thousand seeds per year (Orlov et al 1990;Perglová et al 2007), which can germinate for 5-6 years (Orlov et al 1990). These seeds are extremely abundant in upper soil layers (Moravcová et al 2007;Dalke et al 2015) and easily accessible for granivorous and omnivorous birds (although it was not studied whether birds use those seeds). On the other hand, it can also lead to habitat monopolization and impoverishment of the environment potentially used by foraging birds.…”

Section: Introductionmentioning

confidence: 99%

The impact of Sosnowsky’s Hogweed on feeding guilds of birds

Grzędzicka

Reif

2021

J Ornithol

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Plant invasions alter bird community composition worldwide, but the underlying mechanisms still require exploration. The investigation of feeding guild structure of bird communities can be informative in respect to the potential impact of invasion features on the availability of food for birds. For this purpose, we focused on determining the influence of the invasive Sosnowsky’s Hogweed Heracleum sosnowskyi on the abundance of birds from various feeding guilds. In spring and summer 2019, birds were counted three times on 52 pairs of sites (control + Heracleum) in southern Poland, at various stages of Sosnowsky’s Hogweed development (i.e. sprouting, full growth and flowering, all corresponding to respective bird counts). We have shown that the presence of invader negatively affected the abundance of birds from all feeding guilds. However, a closer examination of the invaded sites uncovered that responses of particular guilds differed in respect to development stages expressed by a set of characteristics of the invader. Ground and herb insectivores were more common on plots with a higher number of the invader, while the abundance of bush and tree insectivores was negatively correlated with hogweeds’ height. Granivores were not affected by the invader’s features, while the abundance of omnivores was negatively related to the number of flowering hogweeds. Besides showing the general negative impact of the invader on different feeding guilds, our research has shown that certain aspects of Sosnowsky’s Hogweed invasion may support or depress occurrence of different birds on invaded plots. Knowledge of these aspects may facilitate our capacity for coping with challenges the invasive plants put in front of bird conservationists.

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Seed ecology of Heracleum mantegazzianum and H. sosnowskyi , two invasive species with different distributions in Europe.

Cited by 16 publications

References 15 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

Heracleum sosnowskyi (Apiaceae) seed productivity and establishment in different habitats of central Lithuania

The impact of Sosnowsky’s Hogweed on feeding guilds of birds

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Seed ecology of Heracleum mantegazzianum and H. sosnowskyi , two invasive species with different distributions in Europe.

Cited by 16 publications

References 15 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

Heracleum sosnowskyi (Apiaceae) seed productivity and establishment in different habitats of central Lithuania

The impact of Sosnowsky’s Hogweed on feeding guilds of birds

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Product

Resources

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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