Plant Dynamics of New Zealand Tussock Grassland Infested with Hieracium pilosella II. Transition Matrices of Vegetation Changes

Scott, D.; Robertson, John; Archie, W. J.

doi:10.2307/2403581

Cited by 9 publications

(7 citation statements)

References 5 publications

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“…Nevertheless, previous studies have reported apparent impacts at some locations, with H. lepidulum appearing to form dense mats to the exclusion of native species (Rose & Frampton, 1999), and other members of the Hieracium genus appear to impact montane plant communities (Scott et al, 1990). Given the unbiased distribution of study blocks across the major habitat types found in the area, it is likely that the results of our experimental sowing describe the average impact of H. lepidulum across the site and within each community.…”

Section: Discussionmentioning

confidence: 80%

Section: Discussionmentioning

confidence: 99%

“…, 2002; Winkler & Stocklin, 2002; Lamoureaux et al. , 2003), leading to declines in the species diversity of plant communities it has invaded (Scott et al. , 1990; Wiser & Allen, 2000; Espie, 2001).…”

Section: Methodsmentioning

confidence: 99%

“…This invasion success is thought to be because of competitive advantages which allow H. lepidulum to displace native species and become dominant over time, sometimes forming dense mats to the exclusion of other species (Rose & Frampton, 1999;Radford et al, 2007). Along with other members of the genus invasive in New Zealand, notably Hieracium pilosella and Hieracium praeltum, it is thought to compete strongly with native species (Fan & Harris, 1996;Moen & Meurk, 2001;Weigelt et al, 2002;Winkler & Stocklin, 2002;Lamoureaux et al, 2003), leading to declines in the species diversity of plant communities it has invaded (Scott et al, 1990;Wiser & Allen, 2000;Espie, 2001). Unlike those congeners, H. lepidulum is able to establish in shade under forest, shrub or tussock canopies and is able to invade higher rainfall and higher elevation areas (Wiser et al, 1998;Rose & Frampton, 1999).…”

Section: Study Speciesmentioning

confidence: 99%

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BIODIVERSITY RESEARCH: Experimental introduction of the alien plant Hieracium lepidulum reveals no significant impact on montane plant communities in New Zealand

Meffin¹,

Miller

Hulme

et al. 2010

Diversity and Distributions

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Aim There is debate over whether alien plants necessarily alter the communities they invade or can coexist with native species without discernable impacts. We followed the fate of montane plant communities in response to the experimental sowing of the alien weed Hieracium lepidulum, looking for changes in plant community composition and structure over 6 years. Location Craigieburn Range, New Zealand. Methods We used a replicated randomised block design, with 30 × 30 cm plots (n = 756) subdivided into 5 × 5 cm cells to examine and compare the effects of H. lepidulum at 0.09 m2 (plot) and 0.0025 m2 (cell) scales. Plots were sown with between 0 and 15,625 H. lepidulum seeds in 2003, forming gradients of invader density and cover. Measurements comprised community richness, evenness and diversity along with H. lepidulum density and cover at both scales. The relationships between the invader and local community attributes were modelled using hierarchical mixed‐effect models. Results Plant communities differed in the extent to which they became invaded, with H. lepidulum cover in the plots ranging from 0% to 52%, with a mean of only 1.89%. Plot species richness increased from 2003 to 2009, with a component of this increase (+0.002 species per year) associated with increasing H. lepidulum density. Other relationships between the plant community and H. lepidulum were generally non‐significant. Main conclusions In these montane plant communities, it appears H. lepidulum coexists with the native community with no measurable negative effects after 6 years on species richness, evenness or diversity, even where density and cover of the invader are highest. We suggest H. lepidulum has persisted preferentially at those sites with abiotic conditions sufficient to support a species‐rich assemblage.

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Section: Discussionmentioning

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Study Speciesmentioning

confidence: 99%

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BIODIVERSITY RESEARCH: Experimental introduction of the alien plant Hieracium lepidulum reveals no significant impact on montane plant communities in New Zealand

Meffin¹,

Miller

Hulme

et al. 2010

Diversity and Distributions

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show abstract

“…Transition matrices are frequently used for modelling in ecology and forestry (e.g. Dale, Hulsman 1988;Dragoi, Albeanu 1998;Huenneke, Marks 1987;Lippe et al 1985;Lepš 1988;Mendoza, Setyarso 1986;Scott et al 1990, and many others). This model approach was used to evaluate the dynamics of damage to forest stands in the Krkonoše Mts.…”

mentioning

confidence: 99%

Dynamics of the health status of forest stands and its prediction on research plots in the Šumava Mts.

Vacek¹,

Podrázský²,

Matějka³

2006

J. For. Sci.

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ABSTRACT:The paper summarises the evaluation of the health status dynamics of allochthonous spruce stands in the Modrava Forest District and of natural stands in the Plešný Forest District. Analysis is based on dendroecological reactions of particular tree individuals in the stand texture. The tree damage was evaluated annually (in the period 1997-2005), based especially on defoliation. The most tolerant were the natural and semi-natural, especially mixed forest stands with dominant beech in the Plešný Forest District territory, the least tolerant were the allochthonous secondary spruce stands in the Modrava Forest District area. The damage dynamics was limited by the insect (bark beetle -Ips typographus) pest activity. Ozone damage appeared much more often in 2002, compared to the year 1999. The most damaged species were sycamore and rowan tree.

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Nutrient stress and performance of invasive Hieracium lepidulum and co-occurring species in New Zealand

Radford

Dickinson

Lord

2006

Basic and Applied Ecology

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Plant Dynamics of New Zealand Tussock Grassland Infested with Hieracium pilosella II. Transition Matrices of Vegetation Changes

Cited by 9 publications

References 5 publications

BIODIVERSITY RESEARCH: Experimental introduction of the alien plant Hieracium lepidulum reveals no significant impact on montane plant communities in New Zealand

BIODIVERSITY RESEARCH: Experimental introduction of the alien plant Hieracium lepidulum reveals no significant impact on montane plant communities in New Zealand

Dynamics of the health status of forest stands and its prediction on research plots in the Šumava Mts.

Nutrient stress and performance of invasive Hieracium lepidulum and co-occurring species in New Zealand

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