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Sainty, G. R.; McCorkelle, G.; Julien, M. H.

doi:10.1023/a:1008248921849

Cited by 106 publications

(20 citation statements)

References 3 publications

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“…Native to South America, alligator weed has invaded North America, China, Australia, New Zealand, and even threaten Africa (Julien et al 1995;Sainty et al 1998). In its invasive range, it rarely sets seeds but propagates by vegetative means from stem and root buds (Julien et al 1995).…”

Section: Introductionmentioning

confidence: 99%

“…It is able to grow in both terrestrial and aquatic habitats, and the terrestrial form may switch to the aquatic form, and vice versa, depending on flooding level. A host-specific flea beetle, Agasicles hygrophila, was introduced to control this noxious weed in America, Australia, and China, but has only been successful in aquatic habitats and has no or limited control in terrestrial habitats, though it can reach high densities in terrestrial habitats (Ma and Wang 2004;Sainty et al 1998) and significantly defoliate the plant (X. Lu and J. Ding, unpublished).…”

Section: Introductionmentioning

confidence: 99%

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Flooding compromises compensatory capacity of an invasive plant: implications for biological control

Ding

2009

Biol Invasions

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Plant compensatory growth is proposed to be insidious to biological control and known to vary under different environmental conditions. However, the effects of microsite conditions on compensation capacity and its indirect impacts on biological control of plant invaders have received little attention. Alligator weed, Alternanthera phioxeroides, is an invasive plant worldwide, growing in both aquatic and terrestrial habitats that are often affected by flooding. Biological control insects have been successful in suppressing the plant in many aquatic habitats but have failed in terrestrial habitats. To evaluate the impact of flooding on compensation capacity, we conducted common garden and greenhouse experiments in which plants were grown under different moisture conditions (aquatic versus terrestrial). Our results show that plants were able to fully recover from continued herbivory in the terrestrial habitat, but failed in the aquatic habitat, indicating a flooding-regulated plant compensatory capacity. Also, the grazed plants increased below-ground growth and reproductive root bud formation in the terrestrial habitat, but there was no such difference in the aquatic habitat. Our findings suggest that the differing plant compensatory capacity, affected by flooding, may explain the different biological control efficacy of alligator weed in aquatic and terrestrial habitats. Understanding mechanisms in plant invader compensation in different microsite conditions is important for improving management efficiency.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flooding compromises compensatory capacity of an invasive plant: implications for biological control

Ding

2009

Biol Invasions

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“…However, Rea and Storrs [143] subsequently retrieved salvinia seeds from the mud attached to vehicles. Another noxious weed, alligator weed, that continues to expand its range in Australia [144][145][146] has been successfully translocated to up-catchment wetland sites on the wheels of (non-recreational) vehicles [145,146]. Despite the contradictions, it is apparent that recreational fishers could play an indirect role in the movement of weeds that could impact on recreational fishing.…”

Section: Inadvertent Overland Dispersal Of Non-native Plantsmentioning

confidence: 99%

Indirect Consequences of Recreational Fishing in Freshwater Ecosystems: An Exploration from an Australian Perspective

Burgin

2017

Sustainability

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Recreational fishing in freshwater ecosystems is a popular pastime in Australia. Although most native fish are endemic, the fauna is depauperate compared to any landmass of similar size. With commercial fishing no longer a major industry in the country's freshwaters, the future sustainability of these ecosystems will depend heavily on the actions of recreational fishers. However, there has been limited focus on the consequences of recreational fishing in freshwaters. There is particularly a dearth of information on the indirect consequences of fishers on the waterbodies they depend on for their sport. After outlining the respective trends in commercial and recreational fishing in Australia as a basis for placing the sport in context, the indirect impacts of fishers on water quality, movement (walking, off-road vehicles), the introduction/translocation of fauna (particularly fish), the dispersal of flora and the transmission of fish disease and pathogens are reviewed. It is concluded that with the decline of commercial fishing, the competition between commercial fin-fishing and recreational fishing is negligible, at least throughout most of the country. It is also concluded that each of the issues addressed has the potential to be detrimental to the long-term sustainability of the freshwater ecosystems that the fishers depend on for their recreation. However, information on these issues is scant. This is despite the current and predicted popularity of freshwater recreational fishing continuing to increase in Australia. Indeed, there has been insufficient quantitative assessment of the impacts to even determine what is required to ensure a comprehensive, adequate and representative protection of these freshwater ecosystems. To underpin the sustainability of inland recreational fishing in the country, it was concluded that research is required to underpin the development and implementation of appropriate policies. The alternative is that the integrity and biodiversity loss of these ecosystems will ultimately result in their collapse before the indirect consequences of recreational fishing have been directly assessed and appropriately protected. However, the lack of protection of wetlands is not restricted to Australia; there is a deficit of freshwater protected areas worldwide.

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“…The beetle has curbed A. philoxeroides invasion in many infested rivers and ponds (Ma 2001;Sainty et al 1998), but has failed to control the plant in semi-aquatic and terrestrial habitats despite occurring on A. philoxeroides in these habitats (Ma 2001). The beetle was first introduced to China in 1986, but has not spread to all areas affected by A. philoxeroides (Ma 2001), and so plant populations have different histories of re-association.…”

Section: Study Speciesmentioning

confidence: 99%

History of exposure to herbivores increases the compensatory ability of an invasive plant

Ding

2011

Biol Invasions

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Release from natural enemies is frequently cited as an important factor contributing to plant invasions. But such effects are likely to be temporary-native herbivores can form new plant-herbivore associations and co-evolved insects might reach the new range. While the potential effects of the initial enemy release have been well studied, the consequences of any resumption of herbivory are poorly understood. Alternanthera philoxeroides is one of the most widespread invasive plants in China and is attacked both by a specialist herbivore introduced from the native range, Agasicles hygrophila, and a native beetle Cassida piperata Hope which has formed a new association. However, these insects are not found throughout the invaded range. To test the effect of the history of population exposure to herbivory on compensatory ability, plants were cultured from 14 populations around China that differed in whether A. hygrophila or C. piperata were present. Treatment plants were exposed to herbivory by A. hygrophila for a week until 50% of the leaf area was defoliated, then grown for 80 days. Plants from populations with prior exposure to herbivory (of any kind) accumulated more root mass than populations without prior exposure, indicating that prior exposure to insects can stimulate plant compensation to herbivory. We would recommend that potential changes in plant tolerance in response to prior exposure to herbivory are considered in invasive plant management plans that employ biocontrol agents.

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Cited by 106 publications

References 3 publications

Flooding compromises compensatory capacity of an invasive plant: implications for biological control

Flooding compromises compensatory capacity of an invasive plant: implications for biological control

Indirect Consequences of Recreational Fishing in Freshwater Ecosystems: An Exploration from an Australian Perspective

History of exposure to herbivores increases the compensatory ability of an invasive plant

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