Effects of Oxalis pes-caprae L. invasion in olive groves

Petsikos, C.; Dalias, Panagiotis; Troumbis, Andreas Y.

doi:10.1016/j.agee.2006.10.019

Cited by 19 publications

(20 citation statements)

References 12 publications

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“…(1) Invasive species are often more widespread and abundant than native species in nearby, uninvaded habitats (e.g., Allen and Knight, 1984 ;Chmura and Sierka, 2006 ;Petsikos et al, 2007 ;Hejda et al, 2009 ;J ä ger et al, 2009 ).…”

Section: A Conceptual Framework For Invasive Plant Effects Across Spamentioning

confidence: 99%

A synthesis of plant invasion effects on biodiversity across spatial scales

Powell

Chase

Knight

2011

American J of Botany

309

213

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Future studies should consider the influence of invaders on the abundance and occupancy-level changes in native species to inform how invasive plants will influence native species richness relationships across spatial scales. This approach will allow greater predictive ability for forecasting changes in biodiversity in the face of anthropogenic biological invasions and will inform invasive species management and restoration.

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Section: A Conceptual Framework For Invasive Plant Effects Across Spamentioning

confidence: 99%

A synthesis of plant invasion effects on biodiversity across spatial scales

Powell

Chase

Knight

2011

American J of Botany

309

213

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“…Here, we study if the legacy of litter from exotics and congeneric natives reciprocally affect their performance when grown in monocultures via changes in soil processes. When litter of exotic plant species is of higher quality than of native plant species, this may increase soil nutrient mineralization [33] , [36] and nutrient availability [37] , [38] . Recently established exotic plant species in the Netherlands may have higher litter quality than congeneric native species [39] .…”

Section: Introductionmentioning

confidence: 99%

Reciprocal Effects of Litter from Exotic and Congeneric Native Plant Species via Soil Nutrients

et al. 2012

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Invasive exotic plant species are often expected to benefit exclusively from legacy effects of their litter inputs on soil processes and nutrient availability. However, there are relatively few experimental tests determining how litter of exotic plants affects their own growth conditions compared to congeneric native plant species. Here, we test how the legacy of litter from three exotic plant species affects their own performance in comparison to their congeneric natives that co-occur in the invaded habitat. We also analyzed litter effects on soil processes. In all three comparisons, soil with litter from exotic plant species had the highest respiration rates. In two out of the three exotic-native species comparisons, soil with litter from exotic plant species had higher inorganic nitrogen concentrations than their native congener, which was likely due to higher initial litter quality of the exotics. When litter from an exotic plant species had a positive effect on itself, it also had a positive effect on its native congener. We conclude that exotic plant species develop a legacy effect in soil from the invaded range through their litter inputs. This litter legacy effect results in altered soil processes that can promote both the exotic plant species and their native congener.

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“…Oxalis pes‐caprae L. (Bermuda buttercup), which is a native to the Cape region in South Africa (Aitken 2007; Oberlander 2009), was brought to Europe in 1757 (Lambdon 2009) and was introduced as an ornamental plant into Greece in 1787 (Sibthorp & Smith 1806). This species now has been widespread across the Mediterranean Basin and is a major weed in old fields, olive groves, disturbed areas, the well‐drained, fertile soil of gardens, and grasslands (Petsikos et al . 2007; Arianoutsou et al .…”

mentioning

confidence: 99%

“…2010). Oxalis pes‐caprae forms dense mats that prevent the growth of other species during the important for the Mediterranean habitats’ early spring growth period (Damanakis & Markaki 1990; Petsikos et al . 2007; Vilà et al .…”

mentioning

confidence: 99%

“…Oxalis pes-caprae L. (Bermuda buttercup), which is a native to the Cape region in South Africa (Aitken 2007;Oberlander 2009), was brought to Europe in 1757 (Lambdon 2009) and was introduced as an ornamental plant into Greece in 1787 (Sibthorp & Smith 1806).This species now has been widespread across the Mediterranean Basin and is a major weed in old fields, olive groves, disturbed areas, the well-drained, fertile soil of gardens, and grasslands (Petsikos et al 2007;Arianoutsou et al 2010;Verdaguer et al 2010). Oxalis pes-caprae forms dense mats that prevent the growth of other species during the important for the Mediterranean habitats' early spring growth period (Damanakis & Markaki 1990;Petsikos et al 2007;Vilà et al 2008).…”

mentioning

confidence: 99%

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Micromorphology of the petals of the invasive weed, Oxalis pes‐caprae

Argiropoulos

Rhizopoulou

2012

Weed Biology and Management

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The alien, seedless Oxalis pes‐caprae has spread and colonized many areas of the Mediterranean Basin, relying on vegetative reproduction. The flowering of O. pes‐caprae is greatly accelerated by its exposure to sunlight. When the sun is shining, both sides of the petals of the funnel‐shaped, open flowers of O. pes‐caprae are exposed to the ambient conditions. In cloudy weather, only some portions of the abaxial petal surfaces of the trumpet‐shaped, closed flowers of O. pes‐caprae are exposed to the ambient conditions. The micromorphology of the petals of O. pes‐caprae was imaged by using light, scanning and atomic force microscopy. In O. pes‐caprae, conical cells are found only on the adaxial epidermis of the petals, which also consist of a narrow mesophyll with a loosely arranged parenchyma and convex cells on their abaxial epidermis. High‐resolution imaging of the petal surfaces, using atomic force microscopy, revealed that the epidermal cells are further ornamented by submicron sculptures, indicating a different roughness, density, and arrangement of the folds between the adaxial and abaxial sides of the petals. Submicron sculpturing increases the surface area of the adaxial epidermal cells of the petals and the distances between the folds are almost equal to the visible waveband. On the abaxial epidermal cells, the distances between the folds are smaller than the subwavelength spectrum. The high and the negligible values of roughness that were obtained on the adaxial and the abaxial surfaces might facilitate the capture and the reflection of light, respectively.

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Effects of Oxalis pes-caprae L. invasion in olive groves

Cited by 19 publications

References 12 publications

A synthesis of plant invasion effects on biodiversity across spatial scales

A synthesis of plant invasion effects on biodiversity across spatial scales

Reciprocal Effects of Litter from Exotic and Congeneric Native Plant Species via Soil Nutrients

Micromorphology of the petals of the invasive weed, Oxalis pes‐caprae

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