A new comprehensive database of alien plant species in Chile based on herbarium records

Fuentes, Nicol; Pauchard, Aníbal; Sánchez, Paulina; Esquivel, Jocelyn; Marticorena, Alicia

doi:10.1007/s10530-012-0334-6

Cited by 110 publications

(138 citation statements)

References 39 publications

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“…Many archives have historically ignored alien taxa in collections (Fuentes et al 2013; and there is often inherent bias against collecting alien species. However, with the various sources of taxonomic uncertainty and changes to nomenclature, a physical record remains essential.…”

Section: Current and Potential Statusmentioning

confidence: 99%

A standardized set of metrics to assess and monitor tree invasions

et al. 2013

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Scientists, managers, and policy-makers need functional and effective metrics to improve our understanding and management of biological invasions. Such metrics would help to assess progress towards management goals, increase compatibility across administrative borders, and facilitate comparisons between invasions. Here we outline key characteristics of tree invasions (status, abundance, spatial extent, and impact), discuss how each of these characteristics changes with time, and examine potential metrics to describe and monitor them. We recommend quantifying tree invasions using six metrics: (a) current status in the region; (b) potential status; (c) the number of foci requiring management; (d) area of occupancy (AOO) (i.e. compressed canopy area or net infestation); (e) extent of occurrence (EOO)(i.e. range size or gross infestation); and (f) observa-tions of current and potential impact. We discuss how each metric can be parameterised (e.g. we include a practical method for classifying the current stage of invasion for trees following Blackburn's unified framework for biological invasions); their potential management value (e.g. EOO provides an indication of the area over which management is needed); and how they can be used in concert (e.g. combining AOO and EOO can provide insights into invasion dynamics; and we use potential status and threat together to develop a simple risk analysis tool). Based on these metrics, we propose a standardized template for reporting tree invasions that we hope will facilitate cross-species and inter-regional comparisons. While we feel this represents a valuable step towards standardized reporting, there is an urgent need to develop more consistent metrics for impact and threat, and for many specific purposes additional metrics are still needed (e.g. detectability is required to assess the feasibility of eradication).

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Section: Current and Potential Statusmentioning

confidence: 99%

A standardized set of metrics to assess and monitor tree invasions

et al. 2013

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“…S1). Exotic species established in Las Cardas arrived in central Chile on average 140 years ago (range: 170-56 years; Fuentes et al, 2013). Currently, 21 out of 106 plant species in the site are exotic (C. Salgado-Luarte et al, unpubl.…”

Section: Study Sitementioning

confidence: 99%

“…For each species, following standard references (Cornelissen et al, 2003;Pérez-Harguindeguy et al, 2013) and regional floras (Squeo et al, 2001;Zuloaga et al, 2008), we determined three categorical life history traits: growth form (rosette plant/elongated/ extensive-stemmed herb/tussock/bambusoid/herbaceous vine/scrambler), plant life span (annual/biennial/perennial) and life form (therophyte/hemicryptophyte/geophyte/phanerophyte). We also recorded species origin (OR) as 'native' or 'exotic' (Fuentes et al, 2013).…”

Section: Sampling Designmentioning

confidence: 99%

Disturbance by an endemic rodent in an arid shrubland is a habitat filter: effects on plant invasion and taxonomical, functional and phylogenetic community structure

Escobedo

Ríos

Salgado‐Luarte

et al. 2017

Ann Bot

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Background and Aims Disturbance often drives plant invasion and may modify community assembly. However, little is known about how these modifications of community patterns occur in terms of taxonomic, functional and phylogenetic structure. This study evaluated in an arid shrubland the influence of disturbance by an endemic rodent on community functional divergence and phylogenetic structure as well as on plant invasion. It was expected that disturbance would operate as a habitat filter favouring exotic species with short life cycles.Methods Sixteen plots were sampled along a disturbance gradient caused by the endemic fossorial rodent Spalacopus cyanus, measuring community parameters and estimating functional divergence for life history traits (functional dispersion index) and the relative contribution to functional divergence of exotic and native species. The phylogenetic signal (Pagel's lambda) and phylogenetic community structure (mean phylogenetic distance and mean nearest taxon phylogenetic distance) were also estimated. The use of a continuous approach to the disturbance gradient allowed the identification of non-linear relationships between disturbance and community parameters.Key Results The relationship between disturbance and both species richness and abundance was positive for exotic species and negative for native species. Disturbance modified community composition, and exotic species were associated with more disturbed sites. Disturbance increased trait convergence, which resulted in phylogenetic clustering because traits showed a significant phylogenetic signal. The relative contribution of exotic species to functional divergence increased, while that of natives decreased, with disturbance. Exotic and native species were not phylogenetically distinct.Conclusions Disturbance by rodents in this arid shrubland constitutes a habitat filter over phylogeny-dependent life history traits, leading to phylogenetic clustering, and drives invasion by favouring species with short life cycles. Results can be explained by high phenotypic and phylogenetic resemblance between exotic and native species. The use of continuous gradients when studying the effects of disturbance on community assembly is advocated.

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“…DC. y Sinapis arvensis L.; Fuentes et al (2013) dan cuenta de 41 especies introducidas pertenecientes a esta familia en el territorio de Chile.…”

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“…Este hallazgo constituye la primera evidencia de su presencia en Chile puesto que no figura ni en el catálogo de Marticorena & Quezada (1985), ni en la base de datos de la Flora del Cono Sur (Zuloaga et al 2008), tampoco se registra en Fuentes et al (2013) y probablemente sea también la primera cita para América del Sur.…”

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Brassica tournefortii Gouan (Brassicaceae), nuevo registro para la flora alóctona asilvestrada de Chile

2014

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Brassica tournefortii is registered for first time for Chilean territory as an alien plant species. A brief description and illustrations are given. The specimens here cited were collected in Los Molles (32°14'S-71°31'W) at Valparaiso Region at the Pacific coast of Chile.De acuerdo con Marticorena (1990), la familia Brassicaceae En el marco de estudios de flora vascular que se llevan a cabo en el litoral de la Región de Valparaíso se detectó la presencia de una población de una especie no registrada hasta ahora, Brassica tournefortii Gouan. La localidad del hallazgo es el balneario de Los Molles, donde se encontraron dos grupos de ejemplares que crecían en sitios baldíos. La especie en el área se comporta como una hierba anual precoz, florecía en julio y en septiembre ya estaba fructificada, y tal como ocurre con numerosos representantes ruderales de esta familia las hojas están ya secas cuando tiene lugar la diseminación.

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A new comprehensive database of alien plant species in Chile based on herbarium records

Cited by 110 publications

References 39 publications

A standardized set of metrics to assess and monitor tree invasions

A standardized set of metrics to assess and monitor tree invasions

Disturbance by an endemic rodent in an arid shrubland is a habitat filter: effects on plant invasion and taxonomical, functional and phylogenetic community structure

Brassica tournefortii Gouan (Brassicaceae), nuevo registro para la flora alóctona asilvestrada de Chile

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