The invasion of <i>Lantana camara</i> L. in Forty Mile Scrub National Park, north Queensland

Fensham, R. J.; Fairfax, R. J.; Cannell, R. J.

doi:10.1111/j.1442-9993.1994.tb00493.x

Cited by 98 publications

(109 citation statements)

References 8 publications

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“…The first scale concerns the global and/or regional spread of invaders (e.g. Richardson and Bond 1991;Lonsdale 1993;Fensham et al 1994;Hengeveld 1994). Investigations on this scale provide information about the rate of spread and the probability of colonization of suitable habitats.…”

Section: Introductionmentioning

confidence: 99%

Seedling recruitment in the invasive clonal shrub, Mahonia aquifolium Pursh (Nutt.)

Auge

Brandl

1997

Oecologia

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The clonal shrub, Mahonia aquifolium, is an aggressive invader of some forests in central Germany. We analysed the importance of seedling recruitment for the local dynamics of these invasive populations. In contrast to many other clonal plants, repeated seedling recruitment takes place in M. aquifolium, contributing to the colonization of available space within populations. Thus, sexual reproduction is not only important for dispersal to new sites but also for the local invasion␣process. In situations with grass competition (Calamagrostis epigejos) the number of successful recruits is reduced, and clonal growth is the predominant mode of reproduction. Since seedling recruitment results in an increasing number of genets as well as ramets, the investigated populations are still below their carrying capacities. Seedling densities are higher beneath the canopy of adults than outside adult patches, and increase with increasing cover of adult ramets. The spatially clumped pattern of seedling emergence results in density-dependent mortality especially in the most crowded seedling clusters. However, adult neighbourhood imposes a much higher mortality. Therefore, we expect that the importance of seedling recruitment for the dynamics of local M. aquifolium populations will decline as the invasion process continues.

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Section: Introductionmentioning

confidence: 99%

Seedling recruitment in the invasive clonal shrub, Mahonia aquifolium Pursh (Nutt.)

Auge

Brandl

1997

Oecologia

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“…from Americas, Ziziphus mauritiana from India) (Fenshaam et al 1994;Grice et al 2000;Grice 2004). However, perhaps the most difficult are more than 10 cactus species introduced from Central and South America (Hosking et al 1988).…”

Section: Alien Plant Invasions In Savannas 3923mentioning

confidence: 99%

Alien plant invasions in tropical and sub-tropical savannas: patterns, processes and prospects

et al. 2010

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Biological invasions affect virtually all ecosystems on earth, but the degree to which different regions and biomes are invaded, and the quality of information from different regions, varies greatly. A large body of literature exists on the invasion of savannas in the Neotropics and northern Australia where invasive plants, especially African grasses, have had major impacts. Less has been published on plant invasions in African savannas, except for those in South Africa. Negative impacts due to plant invasions in African savannas appear to be less severe than in other regions at present. As savannas cover about 60% of the continent, with tens of millions of people relying on the services they provide, it is timely to assess the current status of invasions as a threat to these ecosystems. We reviewed the literature, contrasting the African situation with that of Neotropical and Australian savannas. A number of drivers and explanatory factors of plant invasions in savannas have been described, mostly from the Neotropics and Australia. These include herbivore presence, residence time, intentional introductions for pasture improvements, fire regimes, the physiology of the introduced species, and anthropogenic disturbance. After comparing these drivers across the three regions, we suggest that the lower extent of alien plant invasions in African savannas is largely attributable to: (1) significantly lower rates of intentional plant introductions and widespread plantings (until recently); (2) the role of large mammalian herbivores in these ecosystems; (3) historical and biogeographical issues relating to the regions of origin of introduced species; and (4) the adaptation of African systems to fire. We discuss how changing conditions in the three regions are likely to affect plant invasions in the future.

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“…It spreads by frugivorous birds distributing the seeds, as well as by local vegetative expansion (Totland et al 2005). Lantana can arrest plant succession (Webb et al 1972) and reduce plant species richness in rainforest (Fensham et al 1994), and it appears to do this in the flooded gum-dominated plantations in BBNP by forming a dense, near-monoculture in the understorey. This phenomenon is not unusual.…”

Section: Introductionmentioning

confidence: 98%

Stand-level management of plantations to improve biodiversity values

Cummings

Reid

2008

Biodivers Conserv

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As conservation reserves expand, the likelihood that they will capture areas degraded by previous land use increases. Ecological restoration of such areas will therefore play an increasing role in biodiversity conservation. On the New South Wales North Coast, recent expansion in the conservation estate has captured over 300 softwood and hardwood plantations, many with understoreys dominated by exotic weeds. Here we present an overview of the practices we have adopted in managing flooded gum (Eucalyptus grandis) plantations infested with lantana (Lantana camara) to enhance their biodiversity value. Experiments designed to overcome barriers limiting regeneration of native forest in conjunction with measurement of soil and plant responses yielded insights into the management of former timber plantations for biodiversity. Canonical Correspondence Analysis indicated that the level of canopy retention (or logging intensity) within sites consistently explained the greatest amount of variation in plant community composition (32-38% post-treatment). Thinning and burning stimulated regeneration of native species. Retained canopy cover was proportional to the richness or abundance of native woody shrubs, understorey trees and native perennial herbs, indicating that management intensity can be varied to promote a range of conservation values. A state-and-transition model summarising purported management actions and likely outcomes for these plantations is presented. This is the first time plantations have been managed solely for biodiversity. Logging income means that plantation restoration can be cost-neutral, and the positive influence of a cover crop of trees means that plantation management may generally be manipulated to promote biodiversity conservation.

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The invasion of Lantana camara L. in Forty Mile Scrub National Park, north Queensland

Cited by 98 publications

References 8 publications

Seedling recruitment in the invasive clonal shrub, Mahonia aquifolium Pursh (Nutt.)

Seedling recruitment in the invasive clonal shrub, Mahonia aquifolium Pursh (Nutt.)

Alien plant invasions in tropical and sub-tropical savannas: patterns, processes and prospects

Stand-level management of plantations to improve biodiversity values

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