Population dynamics of
            <i>Heracleum mantegazzianum</i>
            .

Pergl, Jan; Huls, J. S.; Perglová, Irena; Eckstein, R. Lutz; Pyšek, Petr; Otte, Annette; Cock, Matthew J.W.; Nentwig, Wolfgang; Ravn, Hans Peter

doi:10.1079/9781845932060.0092

Cited by 17 publications

(14 citation statements)

References 31 publications

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“…However, we believe that PRUNUS can be extended to many other situations, involving different focal species and sites, offering perspectives for comparisons and generalizations, but also for the management of plant invasions. To be more illustrative, we take hereafter the example of the Giant Hogweed (Heracleum mantegazzianum Sommier & Levier), one of the most problematic invasive species in Europe, using data from Nehrbass et al (2007), Pergl et al (2007) and Jongejans et al (2008).…”

Section: Towards Generalizations Using a Universal Model Of Plant Invmentioning

confidence: 99%

PRUNUS: a spatially explicit demographic model to study plant invasions in stochastic, heterogeneous environments

et al. 2009

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To model the invasion of Prunus serotina invasion within a real forest landscape we built a spatially explicit, non-linear Markov chain which incorporated a stage-structured population matrix and dispersal functions. Sensitivity analyses were subsequently conducted to identify key processes controlling the spatial spread of the invader, testing the hypothesis that the landscape invasion patterns are driven in the most part by disturbance patterns, local demographical processes controlling propagule pressure, habitat suitability, and long-distance dispersal. When offspring emigration was considered as a density-dependent phenomenon, local demographic factors generated invasion patterns at larger spatial scales through three factors: adult longevity; adult fecundity; and the intensity of self-thinning during stand development. Three other factors acted at the landscape scale: habitat quality, which determined the proportion of the landscape mosaic which was potentially invasible; disturbances, which determined when suitable habitats became temporarily invasible; and the existence of long distance dispersal events, which determined how far from the existing source populations new founder populations could be created. As a flexible ''all-in-one'' model, PRUNUS offers perspectives for generalization to other plant invasions, and the study of interactions between key processes at multiple spatial scales.

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Section: Towards Generalizations Using a Universal Model Of Plant Invmentioning

confidence: 99%

PRUNUS: a spatially explicit demographic model to study plant invasions in stochastic, heterogeneous environments

et al. 2009

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“…Empirical field data Biology and ecology of H. mantegazzianum (Moravcová et al 2005;Krinke et al 2005;Pergl et al 2006b) and the history of invasion in the study region (Mü llerová et al 2005) are intensively studied. The data on population dynamics, used in this study, were obtained from observations in permanent plots at 11 sites in 2002(Pergl et al 2006b).…”

Section: Analysis and Interpretation Of Aerial Photographsmentioning

confidence: 99%

“…The data on population dynamics, used in this study, were obtained from observations in permanent plots at 11 sites in 2002(Pergl et al 2006b). The plots 10 · 1 m in size were sampled twice a year (in spring and autumn) and the characteristics of individual plants were recorded: position, size and life stage.…”

Section: Analysis and Interpretation Of Aerial Photographsmentioning

confidence: 99%

A simulation model of plant invasion: long-distance dispersal determines the pattern of spread

et al. 2006

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Mechanisms and consequences of biological invasions are a global issue. Yet, one of the key aspects, the initial phase of invasion, is rarely observed in detail. Data from aerial photographs covering the spread of Heracleum mantegazzianum (Apiaceae, native to Caucasus) on a local scale of hectares in the Czech Republic from the beginning of invasion were used as an input for an individual-based model (IBM), based on small-scale and short-time data. To capture the population development inferred from the photographs, long-distance seed dispersal, changes in landscape structures and suitability of landscape elements to invasion by H. mantegazzianum were implemented in the model. The model was used to address (1) the role of long-distance dispersal in regional invasion dynamics, and (2) the effect of land-use changes on the progress of the invasion. Simulations showed that already small fractions of seed subjected to long-distance dispersal, as determined by systematic comparison of field data and modelling results, had an overproportional effect on the spread of this species. The effect of land-use changes on the simulated course of invasion depends on the actual level of habitat saturation; it is larger for populations covering a high proportion of available habitat area than for those in the initial phase of invasion.Our results indicate how empirical field data and model outputs can be linked more closely with each other to improve the understanding of invasion dynamics. The multi-level, but nevertheless simple structure of our model suggests that it can be used for studying the spread of similar species invading in comparable landscapes.

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“…• Avoidance of vegetation gaps, dense vegetation cover, respectively (Pergl et al 2007) or presence of the same functional group as invader in the endangered plant community (Longo et al 2013, Wang et al 2013, Mwangi et al 2007, Kahmen et al 2005, Pokorny et al 2005), • General increase of diversity in endangered plant communities (Henry et al 2009, Pfisterer et al 2004, van Ruijven et al 2003, Kennedy et al 2002, Moore et al 2001, Naeem et al 2000, • Low grade of human disturbance of the 'natural' ecosystem 'degree of hemeroby' (Mwangi et al 2007, Machado 2004, Steinhardt et al 1999, Jalas 1955.…”

Section: Current Control and Management Of H Mantegazzianummentioning

confidence: 99%

“…This seems not to be the case for Germany in an economically relevant dimension (Bundesamt für Naturschutz 2015). In our calculations, we focus only on one benefit of eradication control: the recreational value in terms of WTP for an environment being free of giant hogweed and its risks for humans (for further benefits see Pergl et al 2007, Nielsen et al 2005, National level based on regional data of districts; costs: based on survey data of n = 287 districts and own calculations; benefits: survey data of n = 282 German households and own calculations Assumptions for time frame…”

Section: Calculation Of Benefitsmentioning

confidence: 99%

A cost-benefit analysis of controlling giant hogweed (Heracleum mantegazzianum) in Germany using a choice experiment approach

Rajmis¹,

Thiele²,

Marggraf³

2016

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Since first of January 2015, the EU-regulation 1143/2014 obligates all member states to conduct costbenefit analyses in preparation of control programs for invasive alien species to minimize and mitigate their impacts. In addition, with ratification of the Rio Declaration and the amended Federal Nature Conservation Act, Germany is committed to control any further spread of invasive species. This is the first cost-benefit analysis estimating positive welfare effects and societal importance of H. mantagezzianum invasion control in Germany. The paper analyses possible control options limiting stands of giant hogweeds (H. mantegazzianum) based on survey data of n = 287 German districts. We differentiate between several control options (e.g. root destruction, mechanical cutting or mowing, chemical treatment and grazing) depending on infested area size and protection status. The calculation of benefits is based on stated preference results (choice experiment; n = 282). For the cost side, we calculate two different invasion scenarios (i) no re-infestation after successfully conducted control measures (optimistic) and (ii) re-infestation twice after conducting control measures occurring within ten years (pessimistic). Minimum costs of eradication measures including a time span of ten years and a social discount rate of 1% result in a total of 3,467,640 € for optimistic scenario and 6,254,932 € for pessimistic invasion scenario, where no success of the first eradication attempt is assumed. Benefits of invasion control in Germany result in a total of 238,063,641 € per year and overassessment-factor corrected in 59,515,910 € per year.

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Population dynamics of Heracleum mantegazzianum .

Cited by 17 publications

References 31 publications

PRUNUS: a spatially explicit demographic model to study plant invasions in stochastic, heterogeneous environments

PRUNUS: a spatially explicit demographic model to study plant invasions in stochastic, heterogeneous environments

A simulation model of plant invasion: long-distance dispersal determines the pattern of spread

A cost-benefit analysis of controlling giant hogweed (Heracleum mantegazzianum) in Germany using a choice experiment approach

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