Effectiveness of management strategies in Acacia dealbata Link invasion, native vegetation and soil microbial community responses

Souza‐Alonso, Pablo; Lorenzo, Paula; Rubido-Bará, Margarita; González, Luís

doi:10.1016/j.foreco.2013.05.053

Cited by 19 publications

(12 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This often leads to germination and reinvasion after clearing. Furthermore, clearing the invasive species often leaves roots or stumps of the plants, which can resprout in some cases (Shortt & Vamosi ; Souza‐Alonso et al ). Reinvasion of restoration sites (through persistent seed and/or vegetative propagules) allows the invasive species to once again dominate the ecosystem, leading to failed restoration (Holmes & Cowling ).…”

Section: Resultsmentioning

confidence: 99%

Barriers to ecosystem restoration presented by soil legacy effects of invasive alien N₂‐fixing woody species: implications for ecological restoration

Nsikani

Wilgen

Gaertner

2018

Restoration Ecology

View full text Add to dashboard Cite

Impacts of invasive alien N 2 -fixing woody species and how they can persist as soil legacy effects after invasive species control are well appreciated, but how soil legacy effects can present barriers to restoration is poorly understood. Finding better ways to deal with these barriers to restoration is essential to improving restoration outcomes. In this study, we review 440 studies to identify barriers to restoration and potential management actions for the barriers to restoration, and provide practical application examples of the management actions. Our findings suggest that altered soil microbial communities, depleted native soil seed banks, elevated N status, secondary invasion and weedy native species dominance, and reinvasion are potential barriers to restoration. Furthermore, carbon addition, litter removal, soil microbial treatments, establishing species adapted to low N levels, prescribed burning, classical biological control, grazing, mowing, herbicide or graminicide application, manual weeding, soil N management, soil solarization, weed mats, native species reintroduction, and nurse plants are potential management actions for these barriers to restoration. However, there is little evidence suggesting that several of these barriers to restoration hinder improved restoration outcomes and this could be due to little research on them. More research is needed to assess their relative importance in hindering improved restoration outcomes. Management actions are rarely applied in combination, despite that they often address distinct barriers to restoration. Management actions should be combined into an integrated management effort to improve restoration outcomes.

show abstract

Section: Resultsmentioning

confidence: 99%

Barriers to ecosystem restoration presented by soil legacy effects of invasive alien N₂‐fixing woody species: implications for ecological restoration

Nsikani

Wilgen

Gaertner

2018

Restoration Ecology

View full text Add to dashboard Cite

show abstract

“…Potential effective results have been achieved using triclopyr herbicide combined with cutting of A. dealbata individuals in a short-term strategy (Campbell and Kluge 1999;Souza-Alonso et al 2013). Triclopyr was also effective to control A. mearnsii seedlings, even at low doses (Viljoen and Stoltsz 2008).…”

Section: Control and Management 41 Recent Advances In Traditional Comentioning

confidence: 99%

Here to stay. Recent advances and perspectives about Acacia invasion in Mediterranean areas

Souza‐Alonso

Rodríguez

González

et al. 2017

Annals of Forest Science

Self Cite

View full text Add to dashboard Cite

Key message The above-and belowground impacts due to Acacia invasions have been described in detail over the last 25 years. Future research should focus on the early detection and prevention of new Acacia introductions and on a cost-effective and sustainable management of the novel ecosystems resulting from invasions.• Context Invasive alien plants (IAPs) strongly alter ecosystems reducing biodiversity, modifying ecosystem services and increasing negative impacts at social and economic level. Among invasive taxa, Acacia is a highly problematic genus worldwide. In fact, almost 500 papers have been published on several aspects of Acacia invasions for the last 25 years.• Aims We aim at reviewing the current knowledge on the consequences of the invasion by Acacia genus in Mediterranean ecosystems. We also collect and propose different approaches for the management and recovery of invaded areas and suggest future perspectives on Acacia research. • Methods We compile, summarise and discuss recent findings on physicochemical, ecological, microbiological and socioeconomic aspects of invasion related to Australian acacias (Acacia dealbata, Acacia longifolia, Acacia mearnsii, Acacia saligna and Acacia melanoxylon) focusing on Mediterranean areas.• Results Acacia invasion generally entails soil physicochemical alterations and changes in microbial function and structure. Consequences such as the decreased biodiversity, altered ecosystem structure, larger seed banks dominated by invasive species, new biotrophic relationships or alterations in water availability and fire regimes suggest that acacias are locally creating novel ecosystems.• Conclusions Forecasting invasions, modelling and managing ecosystems dominated by acacias are challenging tasks that should be addressed in the future, since climatic conditions and intensification in land uses are increasing the likelihood of Acacia invasions in Mediterranean areas. Unsuccessful management actions suggest that restoration should be meticulously monitored, but the magnitude of invasion or the inconsistency of economic investment indicate that eradication is often unfeasible. Alternatively, novel integrative and cost-effective solutions including the collaboration of society, politicians and stakeholders are necessary to prevent new introductions and achieve sustainable control of acacias. There is a growing interest in applied research on the valorisation or novel uses for acacias and their residues that result in economic benefits.

show abstract

“…Australian acacias are a group of leguminous woody plants that include some of the most important plant invaders on a global scale (Richardson & Rejmánek, 2011;Souza-Alonso et al, 2013). Australian acacias have a wide range of impacts on ecosystems that increase with time and disturbance, transform ecosystems and alter and reduce ecosystem service delivery.…”

Section: Characterization and Distribution Of Acacia Dealbata Linkmentioning

confidence: 99%

“…The species Acacia dealbata Link (silver wattle) was introduced in Europe during the 19 th century and is currently causing huge ecological concerns in Southern Europe (Souza-Alonso et al, 2013;Vazquez-de-la-Cueva, 2014). In Portugal, the species was introduced in 1850 and used for ornamental purpose, for its products (flowers, 3 Mapping invasive alien acacia in central-eastern of Portugal presence maps for the species acacia by supervised classification techniques should be explored.…”

Section: Characterization and Distribution Of Acacia Dealbata Linkmentioning

confidence: 99%

Mapping invasive alien Acacia dealbata Link using ASTER multispectral imagery: a case study in central-eastern of Portugal

2016

View full text Add to dashboard Cite

Aim of the study: Acacia dealbata is an alien invasive species that is widely spread in Portugal. The main goal of this study was to produce an accurate and detailed map for this invasive species using ASTER multispectral imagery.Area of study: The central-eastern zone of Portugal was used as study area. This whole area is represented in an ASTER scene covering about 321.1 x 10 3 ha. Material and methods: ASTER imagery of two dates (flowering season and dry season) were classified by applying three supervised classifiers (Maximum Likelihood, Support Vector Machine and Artificial Neural Networks) to five different land cover classifications (from most generic to most detailed land cover categories). The spectral separability of the land cover categories was analyzed and the accuracy of the 30 produced maps compared.Main results: The highest classification accuracy for acacia mapping was obtained using the flowering season imagery, the Maximum Likelihood classifier and the most detailed land cover classification (overall accuracy of 86%; Kappa statistics of 85%; acacia class Kappa statistics of 100%). As a result, the area occupied by acacia was estimated to be approximated 24,770 ha (i.e. 8% of the study area).Research highlights: The methodology explored proved to be a cost-effective solution for acacia mapping in central-eastern of Portugal. The obtained map enables a more accurate and detailed identification of this species' invaded areas due to its spatial resolution (minimum mapping unit of 0.02 ha) providing a substantial improvement comparably to the existent national land cover maps to support monitoring and control activities.

show abstract

Effectiveness of management strategies in Acacia dealbata Link invasion, native vegetation and soil microbial community responses

Cited by 19 publications

References 47 publications

Barriers to ecosystem restoration presented by soil legacy effects of invasive alien N₂‐fixing woody species: implications for ecological restoration

Barriers to ecosystem restoration presented by soil legacy effects of invasive alien N₂‐fixing woody species: implications for ecological restoration

Here to stay. Recent advances and perspectives about Acacia invasion in Mediterranean areas

Mapping invasive alien Acacia dealbata Link using ASTER multispectral imagery: a case study in central-eastern of Portugal

Contact Info

Product

Resources

About

Effectiveness of management strategies in Acacia dealbata Link invasion, native vegetation and soil microbial community responses

Cited by 19 publications

References 47 publications

Barriers to ecosystem restoration presented by soil legacy effects of invasive alien N2‐fixing woody species: implications for ecological restoration

Barriers to ecosystem restoration presented by soil legacy effects of invasive alien N2‐fixing woody species: implications for ecological restoration

Here to stay. Recent advances and perspectives about Acacia invasion in Mediterranean areas

Mapping invasive alien Acacia dealbata Link using ASTER multispectral imagery: a case study in central-eastern of Portugal

Contact Info

Product

Resources

About

Barriers to ecosystem restoration presented by soil legacy effects of invasive alien N₂‐fixing woody species: implications for ecological restoration

Barriers to ecosystem restoration presented by soil legacy effects of invasive alien N₂‐fixing woody species: implications for ecological restoration