Increasing the Understanding of Plant Invasions in Southern South America: First Symposium on Alien Plant Invasions in Chile

Pauchard, Aníbal; Cavieres, Lohengrin A.; Bustamante, Ramiro O.; Becerra, Pablo; Rapoport, Eduardo H.

doi:10.1023/b:binv.0000022137.61633.09

Cited by 33 publications

(24 citation statements)

References 2 publications

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“…Su rápido crecimiento permitió obtener madera para pulpa y celulosa, lo que motivó la introducción y masificación de numerosas coníferas con fines de producción forestal y el establecimiento de parcelas de ensayo en diversas zonas del país (Pauchard et al 2004, Löewe & Murillo 2001. La amplia introducción de coníferas permitió que varias especies se comportasen como invasoras en Chile.…”

Section: Introductionunclassified

Diferencias en La Composición Vegetal De Un Bosque De Araucaria Araucana(molina) K. Koch Y Nothofagus Antárctica(g. Forst.) Oerst: Asociadas a Un Gradiente De Invasión De Pinus Contortadouglas Ex Loudon

2013

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Section: Introductionunclassified

Diferencias en La Composición Vegetal De Un Bosque De Araucaria Araucana(molina) K. Koch Y Nothofagus Antárctica(g. Forst.) Oerst: Asociadas a Un Gradiente De Invasión De Pinus Contortadouglas Ex Loudon

2013

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“…Several accounts of the ecology of alien plant invasions and the philosophy and history of their management in protected areas have been published (e.g. McKinney 2002, Pauchard et al 2004, Foxcroft and Freitag-Ronaldson 2007, Foxcroft and Downey 2008, Foxcroft et al 2013. However, there have only been a few quantitative accounts of the costs and effectiveness of management interventions (see McConnachie et al 2012 for some examples).…”

Section: Introductionmentioning

confidence: 99%

An assessment of the evolution, costs and effectiveness of alien plant control operations in Kruger National Park, South Africa

Wilgen¹,

Fill²,

Govender³

et al. 2017

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Alien plants were first recorded in 1937 in the 2 million ha Kruger National Park (KNP, a savanna protected area in South Africa), and attempts to control them began in the mid-1950s. The invasive alien plant control program expanded substantially in the late 1990s, but its overall efficacy has not been determined. We present an assessment of invasive alien plant control operations over several decades in KNP. We based our assessment on available information from a range of control programs funded from various sources, including national public works programs, KNP operational funds, and foreign donor funds. Over ZAR 350 million (~ US$ 27 million) has been spent on control interventions between 1997 and 2016. We found evidence of good progress with the control of several species, notably Opuntia stricta, Sesbania punicea, Lantana camara and several aquatic weeds, often because of effective biological control. On the other hand, we found that over one third (40%) of the funding was spent on species that have subsequently been recognised as being of lower priority, most of which were alien annual weeds. The allocation of funds to non-priority species was sometimes driven by the need to meet additional objectives (such as employment creation), or by perceptions about relative impact in the absence of documented evidence. We also found that management goals were limited to inputs (funds disbursed, employment created, and area treated) rather than to ecological outcomes, and progress was consequently not adequately monitored. At a species level, four out of 36 species were considered to be under complete control, and a further five were under substantial control. Attempts to control five annual species were all considered to be ineffective. Brian W. van Wilgen et al. / NeoBiota 35: 35-59 (2017) 36 On the basis of our findings, we recommend that more studies be done to determine impacts associated with individual invasive alien species; that the criteria used to prioritise invasive alien species be documented based on such assessments, so that management can justify a focus on priority species; and that funding be re-directed to those species that clearly pose greater threats, and for which other solutions (such as biological control) are not an option. NeoBiota

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“…Chile no está ajeno a la problemática de las plantas invasoras, y numerosas especies ocasionan pérdidas a nivel productivo, o son una seria amenaza a los esfuerzos de conservación de la biodiversidad dentro del país (Arroyo et al 2000, Pauchard et al 2004, Figueroa et al 2004. Sin embargo, poco se sabe sobre los efectos ecosistémicos de las especies invasoras, en especial de aquellas con un mayor potencial invasivo (Pauchard et al 2004).…”

Section: Introduccionunclassified

“…Sin embargo, poco se sabe sobre los efectos ecosistémicos de las especies invasoras, en especial de aquellas con un mayor potencial invasivo (Pauchard et al 2004).…”

Section: Introduccionunclassified

Banco De Semillas, Regeneracion Y Crecimiento De Teline Monspessulana (L.) K. Koch Despues De Un Incendio Forestal

Garcı́a¹,

Pauchard

Peña³

2007

Gayana Bot.

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RESUMENLas especies de plantas invasoras y el fuego pueden generar retroalimentación positiva, modificando la dinámica del paisaje y los ciclos ecosistémicos. Este trabajo tiene por objetivo estudiar los patrones poblacionales de Teline monspessulana después de un incendio forestal en la zona costera de la Región del Bío-Bío, Chile, dominada por plantaciones forestales de Pinus radiata y Eucalyptus globulus. El estudio se realizó en un sector del Cerro Caracol, adyacente a la ciudad de Concepción, que fue afectado por un incendio en febrero de 2005. El área de estudio fue estratificada en tres sitios, los que representan diferencias en cobertura y pendiente. En cada sitio se establecieron quince parcelas de un metro cuadrado. El banco de semillas de T. monspessulana fue registrado a diferentes profundidades en cada sitio. Durante la primavera de 2005 hasta el otoño de 2006, registros mensuales de la densidad y altura de la regeneración de T. monspessulana fueron compilados para cada parcela. Las semillas de T. monspessulana almacenadas en el banco edáfico alcanzaron un máximo de 3.975 semillas m -2 , registrándose una variación significativa entre los sitios. La regeneración promedio varió entre 12.000 plantas/ha a 2.131.000 plantas/ha dependiendo del sitio. Transcurrido ocho meses desde el inicio de la germinación, la mayor altura promedio de T. monspessulana se registró en el sitio con mayor cobertura arbórea (ca. 70 cm). Acompañando a T. monspessulana regeneraron las especies introducidas Acacia melanoxylon y Rubus ulmifolius. Una vez concluido el periodo estival se aprecia una disminución cercana al 35% en la densidad de T. monspessulana en los tres sitios. Se concluye que el fuego está favoreciendo la permanencia y dominancia de T. monspessulana en zonas de plantaciones forestales con especies exóticas de la Región del Bío-Bío costera de Chile.PALABRAS CLAVES: Retamilla, especies exóticas, invasiones biológicas, feedbacks positivos de fuego, Genista. ABSTRACTInvasive plant species and fire may generate positive feedbacks, modifying landscape dynamics and ecosystem cycles. This study aims to study the population patterns of Teline monspessulana after forest wildfires in the coastal areas of the Bio-Bio Region of Chile, which is dominated by forest plantations of Pinus radiata and Eucalyptus globulus. The study was conducted in Cerro Caracol park, located next to the city of Concepción and burned by a fire in February 2005. The study area was stratified in three sites, representing a range of cover and slope conditions. In each site, fifteen plots of one square meter were established. Seed bank was recorded at different depth in each the sites. During the spring of 2005 and summer to the fall of 2006, monthly records of density and height of T. monspessulana regeneration and other companion species were compiled for each plot. Fire destroyed all shrub and herbaceous vegetation. However, seeds of T. monspessulana in the seed bank reached to 3,975 seeds m -2 , great variation across sites was detected. The aver...

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Increasing the Understanding of Plant Invasions in Southern South America: First Symposium on Alien Plant Invasions in Chile

Cited by 33 publications

References 2 publications

Diferencias en La Composición Vegetal De Un Bosque De Araucaria Araucana(molina) K. Koch Y Nothofagus Antárctica(g. Forst.) Oerst: Asociadas a Un Gradiente De Invasión De Pinus Contortadouglas Ex Loudon

Diferencias en La Composición Vegetal De Un Bosque De Araucaria Araucana(molina) K. Koch Y Nothofagus Antárctica(g. Forst.) Oerst: Asociadas a Un Gradiente De Invasión De Pinus Contortadouglas Ex Loudon

An assessment of the evolution, costs and effectiveness of alien plant control operations in Kruger National Park, South Africa

Banco De Semillas, Regeneracion Y Crecimiento De Teline Monspessulana (L.) K. Koch Despues De Un Incendio Forestal

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