Early competition between the exotic herb Rumex acetosella and two native tussock grasses with different palatability and water stress tolerance

Franzese, Jorgelina; Ghermandi, Luciana

doi:10.1016/j.jaridenv.2014.03.004

Cited by 12 publications

(10 citation statements)

References 30 publications

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“…This positive density dependence can occur because individuals of the same species might influence local environmental conditions that favor its own kind, and could result in competitive superiority over resident species under a range of environmental conditions (Powell and Knight , Molina‐Montenegro et al. , Franzese and Ghermandi , Čuda et al. ).…”

Section: Discussionmentioning

confidence: 99%

“…There is some evidence indicating that positive density dependence increases species survival and reproduction (Wills et al 1997). This positive density dependence can occur because individuals of the same species might influence local environmental conditions that favor its own kind, and could result in competitive superiority over resident species under a range of environmental conditions (Powell and Knight 2009, Molina-Montenegro et al 2012, Franzese and Ghermandi 2014, Cuda et al 2015. This positive density dependence could be also attributed to the shape of the density dependence curve, assuming that successful invasive population have more scramble type of density dependence (Aikio et al 2008).…”

Section: Discussionmentioning

confidence: 99%

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Richness, phylogenetic diversity, and abundance all have positive effects on invader performance in an arid ecosystem

et al. 2020

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In search of generalities in biological invasions, it is sometimes forgotten that invader success can be a function of both the diversity of the invaded community and the relatedness of the invader relative to community residents. Both qualities are likely to be especially important in stressful ecosystems, and identifying the species and community attributes that influence biological invasions can help direct management efforts in a sensitive ecosystem like those in arid regions. Pink Morning Glory, Ipomoea carnea Jaq. (Family: Convolvulaceae), is an annual vine native to Central and South America and is invasive in Egypt. We examined the performance of I. carnea at different densities in assembled communities of Egyptian annual native species. The native plant communities were manipulated to represent gradients of species richness and phylogenetic diversity and relatedness to I. carnea. We quantified the performance of I. carnea in these communities and examined the contribution of resident species richness, phylogenetic diversity, and phylogenetic relatedness to invader resistance. Our findings revealed that there was a positive relationship between invader performance and its mean phylogenetic distance to the resident species. Furthermore, species‐rich communities with more distantly related species positively contributed to invader performance in contrast to the classic biotic resistance hypothesis. Beyond these positive relationships, a positive density‐dependent effect of I. carnea on its performance was observed. We conclude that facilitative interactions are potentially important drivers promoting the successful invasion of the nonnative species I. carnea in water‐limited and harsh ecosystems. These results suggest that perhaps contrary to understanding from temperate systems, communities with a higher diversity of species could be more likely to be invaded by arid‐adapted species that are distantly related to natives. Thus, policy and management in arid regions should carefully consider reviewing the importation of nonnative species that are phylogenetically distinct and adapted to arid conditions and prioritizing their control once they are established.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Richness, phylogenetic diversity, and abundance all have positive effects on invader performance in an arid ecosystem

et al. 2020

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“…is particularly aggressive in abandoned agricultural fields and grazed areas (Power et al 2014). Rumex acetosella L. might interfere with secondary succession processes and gap colonization dynamics of native species, and it has the ability to competitively exclude native tussock grasses (Franzese & Ghermandi 2014). Geographical distribution.…”

Section: Discussionmentioning

confidence: 99%

Riqueza y distribución de angiospermas herbáceas a lo largo de gradientes de elevación y perturbación del bosque en el centro de Veracruz, Méxic

et al. 2017

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Background: Terrestrial herbs are a significant floristic element of tropical forests; however, there is a lack of research focused on this plant group. Question: Which are the patterns of species distribution of herbaceous angiosperms along gradients of elevation and forest disturbance at Cofre de Perote, central Veracruz, Mexico? Studied species: Terrestrial herbaceous angiosperms. Study site and years of study: Eastern slopes of Cofre de Perote, central Veracruz, Mexico; from 2012 until 2014. Methods: We established an elevational transect (40 to 3,520 m), where floristic sampling in eight study sites within elevational belts of about 500 m each were realized. We recorded the occurrence of terrestrial angiosperm herbs within 135 20 × 20 m plots, distributed in old-growth, degraded forest, secondary vegetation, as well as azonal vegetation. Species richness and floristic composition was compared between the different elevational belts and forest disturbance. Results:We recorded a total of 264 herb species, 31 endemic to Mexico and three classified as threatened. This number of species represents 5.7 % of Veracruz's herbaceous angiosperm flora. The highest species richness was recorded at 2,500 m (76) and 1,500 m (52). In most of the cases, secondary forests showed the highest species richness independently of the elevational gradient, whereas old-growth forests had fewer species. Conclusions: The observed species richness, including endemic elements, highlights the importance for plant conservation of the area which is threatened by land use changes. Additionally, we suggest that vegetation variations formed by mature, disturbed and secondary forests is acceptable (and unavoidable) and can even increase species richness. Keywords: conservation, disturbance gradient, floristic inventory, forest fragmentation, terrestrial herbs. Riqueza y distribución de angiospermas herbáceas a lo largo de gradientes de elevación y perturbación del bosque en el centro de Veracruz, México ResumenAntecedentes: Las hierbas terrestres son un elemento florístico importante de los bosques tropicales; sin embargo, aún es escasa la investigación centrada en este grupo de plantas. Pregunta: ¿Cuáles son los patrones de distribución de especies de angiospermas herbáceas a lo largo de gradientes de altitud y de perturbación en el Cofre de Perote, centro de Veracruz, México? Especies de estudio: Angiospermas herbáceas terrestres. Sitio de estudio y años de estudio: Vertiente este del Cofre de Perote, centro de Veracruz, México; desde 2012 hasta 2014. Métodos: Establecimos un gradiente altitudinal (40 a 3,520 m), donde realizamos un muestreo florístico en ocho sitios de estudio dentro de pisos altitudinales de aproximadamente 500 m cada uno. Registramos la presencia de angiospermas herbáceas terrestres dentro de 135 parcelas de 20 × 20 m, distribuidas en bosques maduros, degradados, secundarios, así como vegetación azonal. Se analizó la riqueza de especies, la composición florística y luego comparamos los datos resultantes entre los ...

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“…The outcome of competition depended on the environmental context ( Daehler 2003 ), e.g. on water availability ( Franzese and Ghermandi 2014 ), shading ( Molina-Montenegro et al . 2012 ) or nutrient supply ( Powell and Knight 2009 ).…”

Section: Introductionmentioning

confidence: 99%

“…Despite some studies testing for the competitive superiority of invasive plants over native plants under a range of environmental conditions ( Powell and Knight 2009 ; Molina-Montenegro et al . 2012 ; Franzese and Ghermandi 2014 ), the competitive relationships between these two groups of species have rarely been tested along the gradient of competitor densities (but see Leger and Espeland 2010 ). Moreover, studies focusing on a reciprocal impact of native species on invasive species are still the exception rather than the rule ( Leger and Espeland 2010 ; Carvallo et al .…”

Section: Introductionmentioning

confidence: 99%

Competition among native and invasive Impatiens species: the roles of environmental factors, population density and life stage

et al. 2015

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We examined competition effects in an experiment with three Impatiens species (Balsaminaceae) sharing similar life-history characteristics and habitats: the native I. noli-tangere, and two invasive species, I. parviflora and I. glandulifera. The results suggest that the effect of competition on the performance of invasive Impatiens species exceeds that of environmental factors, i.e. light and soil moisture. Competitive interactions with co-occurring congeners may thus be a more important predictor of the invasion success of an invasive species and its population dynamics than its response to abiotic factors, and should be taken into account when evaluating their invasion potential.

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Early competition between the exotic herb Rumex acetosella and two native tussock grasses with different palatability and water stress tolerance

Cited by 12 publications

References 30 publications

Richness, phylogenetic diversity, and abundance all have positive effects on invader performance in an arid ecosystem

Richness, phylogenetic diversity, and abundance all have positive effects on invader performance in an arid ecosystem

Riqueza y distribución de angiospermas herbáceas a lo largo de gradientes de elevación y perturbación del bosque en el centro de Veracruz, Méxic

Competition among native and invasive Impatiens species: the roles of environmental factors, population density and life stage

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