Control of elmleaf blackberry invasion in a natural reserve in Argentina

Mazzolari, Ana Clara; Comparatore, Viviana; Bedmar, Francisco

doi:10.1016/j.jnc.2010.12.002

Cited by 11 publications

(3 citation statements)

References 16 publications

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“…Indeed, glyphosate inhibits the enzyme 5-enolpyruvylshikimate-3-phosphatase synthase, involved in the synthesis pathway of aromatic amino acids, which is only present in plants and microorganisms (Carlisle & Trevors 1988;). For that reason, glyphosate-based herbicides have been advocated as animal friendly chemicals for control of plant pests in nature reserves (Monteiro et al 2005;Tsui & Chu 2008;Mazzolari et al 2011). Despite this, lethal effects of glyphosate-based herbicides on aquatic animals have been shown (e.g.…”

Section: Introductionmentioning

confidence: 99%

Stronger effects of Roundup than its active ingredient glyphosate in damselfly larvae

Janssens

Stoks

2017

Aquatic Toxicology

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Pesticides are causing strong decreases in aquatic biodiversity at concentrations assumed safe by legislation. One reason for the failing risk assessment may be strong differences in the toxicity of the active ingredient of pesticides and their commercial formulations. Sublethal effects, especially those on behaviour, have been largely ignored in this context, yet can be equally important as lethal effects at the population and ecosystem levels. Here, we compared the toxicity of the herbicide Roundup and its active ingredient glyphosate on survival, but also on ecologically relevant sublethal traits (life history, behaviour and physiology) in damselfly larvae. Roundup was more toxic than glyphosate with negative effects on survival, behaviour and most of the physiological traits being present at lower concentrations (food intake, escape swimming speed) or even only present (survival, sugar and total energy content and muscle mass) following Roundup exposure. This confirms the toxicity of the surfactant POEA. Notably, also glyphosate was not harmless: a realistic concentration of 2mg/l resulted in reduced growth rate, escape swimming speed and fat content. Our results therefore indicate that the toxicity of Roundup cannot be fully attributed to its surfactant, thereby suggesting that also the new generation of glyphosate-based herbicides with other mixtures of surfactants likely will have adverse effects on non-target aquatic organisms. Ecotoxicological studies comparing the toxicity of active ingredients and their commercial formulations typically ignore behaviour while the here observed differential effects on behaviour likely will negatively impact damselfly populations. Our data highlight that risk assessment of pesticides ignoring sublethal effects may contribute to the negative effects of pesticides on aquatic biodiversity.

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Section: Introductionmentioning

confidence: 99%

Stronger effects of Roundup than its active ingredient glyphosate in damselfly larvae

Janssens

Stoks

2017

Aquatic Toxicology

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“…It is important to mention that in the study area some non-native species were found that have a history of invasion in mountain grasslands of the Pampa biome but with low representativeness in the PNR. Such is the case of Eucalyptus camaldulensis Dehnh., Gleditsia triacanthos L., Ligustrum lucidum W. T. Aiton, Rubus ulmifolius Schott, Pinus radiata D. Don and Prunus mahaleb L., among others (Ghersa et al, 2002;Zalba & Villamil, 2002;Hoyos et al, 2010;Mazzolari et al, 2011;Ferreras et al, 2014; Therefore, periodic monitoring of the evolution of these species' expansion and rapid actions for their control could prevent future problems of plant invasions and facilitate the protection of hill and mountain grassland biodiversity.…”

Section: Invasive Speciesmentioning

confidence: 99%

Vegetation of a hill grassland of the Paititi Natural Reserve (Pampa biome) and early detection of non-native species acting as invasive

Echeverría

Alonso²,

Comparatore³

2023

Bol. Soc. Argent. Bot.

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Background and aims: Invasive species are the greatest threat to conservation. The objectives of this study were to identify the flora that thrive in a hill grassland of the Paititi Natural Reserve, to perform an early detection of non-native plant species that might be acting as invasive, and to establish the current situation of the native species considered threatened. M&M: Following the altitudinal gradient, 14 sites were selected; the environmental characteristics and cover-abundance of the vascular plant species were recorded in each site. With the collected data, a Principal Coordinate Analysis (PCooA) was performed to group the sites into vegetation units that were later described considering environmental characteristics, identified species and plant community type. Additionally, the threatened species were specified, as well as the most abundant exotic ones, therefore considered invasive. Results: Total richness reached 370 species, 26.5% corresponding to non-native ones. Thirty threatened species were identified. The PCooA grouped the sites into eight vegetation units. The non-native species considered invasive were Dactylis glomerata, Senecio madagascariensis, Holcus lanatus and Racosperma melanoxylon, these last two reached the highest coverage-abundance values. Conclusions: To conserve biodiversity and minimize the invasion process, management efforts should be focused on monitoring the threatened species and controlling the advance of the non-native species acting as invasive. Early detection of those species in similar environments would be fundamental to facilitate rapid responses towards reducing invasions.

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“…R. ulmifolius is found in most agricultural and forest landscapes of southern-central Chile (33°-43°S, Matthei et al 1995), probably confused in some areas with R. praecox, recently described in Chile by Rejmánek (2015). By the first half of the 1970s about 5% of the agricultural land area in mainland Chile was infested by R. ulmifolius, R. cf.…”

Section: Introductionmentioning

confidence: 97%

Evaluation of rust pathogenicity (Phragmidium violaceum) as a biological control agent for the invasive plant Rubus ulmifolius on Robinson Crusoe Island, Chile

Vargas-Gaete

Doussoulin

Smith‐Ramírez

et al. 2019

Australasian Plant Pathol.

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Rubus ulmifolius is a highly invasive species that negatively affects biodiversity, especially on Robinson Crusoe Island (RCI), one of the two global mini-hotspots of vascular plants. The rust Phragmidium violaceum has been used as a biological control agent for some Rubus species in mainland Chile, New Zealand and Australia. We aim to quantify P. violaceum pathogenicity over R. ulmifolius on RCI, under both field and laboratory conditions, to determine its potential as a biological control. In addition, in order to broaden our knowledge about the pathogenicity of P. violaceum from RCI, it was also tested on a highly susceptible Rubus species: R. cf. constrictus. We sampled four forest sites on RCI, measuring abiotic, micro-site, and vegetation variables that could be related with infection. In the laboratory, we inoculated P. violaceum into R. ulmifolius seedlings from RCI and R. cf. constrictus seedlings from mainland Chile. We found a low infection incidence in the field, where only 62 of 182 plots presented infected individuals. Applying a fitted generalized linear model, we predicted ten times more infection of P. violaceum on R. ulmifolius when located in southern aspect slopes and shallow soils (< 30 cm). In the laboratory we determined that rust from RCI infected R. ulmifolius individuals from the island in low density, and did not infect R. cf. constrictus; this low infection rate reinforces our field results. The low infection on R. cf. constrictus may mean that P. violaceum from RCI could originate from very impoverished genetic material. We recommend testing different rust genetic origins, mainly from the Old World, to increase their genetic diversity.

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Control of elmleaf blackberry invasion in a natural reserve in Argentina

Cited by 11 publications

References 16 publications

Stronger effects of Roundup than its active ingredient glyphosate in damselfly larvae

Stronger effects of Roundup than its active ingredient glyphosate in damselfly larvae

Vegetation of a hill grassland of the Paititi Natural Reserve (Pampa biome) and early detection of non-native species acting as invasive

Evaluation of rust pathogenicity (Phragmidium violaceum) as a biological control agent for the invasive plant Rubus ulmifolius on Robinson Crusoe Island, Chile

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