scholarly journals Plant-soil feedback contributes to predicting plant invasiveness of 68 alien plant species differing in invasive status

2019 ◽  
Author(s):  
Anna Aldorfová ◽  
Pavlína Knobová ◽  
Zuzana Münzbergová
Keyword(s):  
Invasive Species ◽  
Residence Time ◽  
Seedling Establishment ◽  
Plant Traits ◽  
Enemy Release ◽  
Alien Plant ◽  
Non Invasive ◽  
Plant Soil ◽  
Species Characteristics ◽  
Plant Invasiveness

Abstract1. Understanding what species characteristics allow some alien plants to become invasive while others fail to is critical to our understanding of community assembly processes. While many characteristics have been shown to predict plant invasiveness, the importance of plant-soil feedbacks (PSFs) in invasions has been difficult to assess since individual studies include only a few species and use disparate methodology.2. We studied PSFs of 68 invasive and non-invasive alien species in a single two-phase garden experiment, and compared the relative importance of PSF, residence time, phylogenetic novelty and plant traits for plant invasiveness. Additionally, we tested for relationships between PSF, residence time and phylogenetic novelty.3. PSF for seedling establishment belonged to five best predictors of plant invasiveness, along with specific leaf area, height, seedling growth rate, and residence time. Invasive species had more positive PSF for seedling establishment, but not for biomass, than non-invasive species. Phylogenetically novel species experienced less negative PSF than species with native congeners, suggesting they benefit more from enemy release. PSF of non-invasive species, contrary to that of invasive species, was becoming more negative with increasing residence time.4.Synthesis. We demonstrated that PSF plays a role in predicting invasiveness that is comparable with other species characteristics that are more commonly studied. PSF should thus receive more attention in studies predicting community structure and in programs assessing the likely invasions of aliens.

scholarly journals Plant-Soil Interactions of an Invasive Plant Species in its Native Range Help to Explain its Invasion Success Elsewhere

2021 ◽  
Author(s):  
Anna Aldorfová ◽  
Věra Hanzelková ◽  
Lucie Drtinová ◽  
Hana Pánková ◽  
Tomáš Cajthaml ◽  
...  
Keyword(s):  
Invasive Species ◽  
Invasive Plant ◽  
Seedling Emergence ◽  
Invasion Success ◽  
Enemy Release ◽  
Native Range ◽  
Non Invasive ◽  
Secondary Range ◽  
Plant Soil ◽  
Root Shoot Ratio

Abstract Purpose: To compare plant-soil feedback (PSF) of invasive Cirsium vulgare and non-invasive C. oleraceum in their native range to test a hypothesis that the invasive species is more limited by specialized pathogens in the native range and/or able to benefit more from generalist mutualists, and thus may benefit more from loss of specialized soil biota in a secondary range.Methods: We assessed changes in soil nutrients and biota following soil conditioning by each species and compared performance of plants grown in self-conditioned and control soil, from which all, some or no biota was excluded. Results: The invasive species depleted more nutrients than the non-invasive species and coped better with altered nutrient levels. The invasive species had higher seedling emergence which benefited from presence of non-specific microbes. The invasive species biomass responded less positively to specialized (self-conditioned) microbiota and more negatively to specialized larger-sized biota compared to the non-specialized control biota, suggesting the species may benefit more from enemy release and suffer less from loss of specialized mutualists when introduced to a secondary range. The invasive species showed greater ability to decrease its root-shoot ratio in presence of harmful biota and thus reduce their negative effects on its performance.Conclusions: Our study highlights the utility of detailed PSF research in the native range of species for understanding the factors that regulate performance of invasive and non-invasive species in their native range, and for pinpointing the types of biota involved in their regulation and how this changes across the plants life cycle.

Invasive species differ in key functional traits from native and non‐invasive alien plant species

2019 ◽  
Vol 30 (5) ◽  
pp. 994-1006 ◽  
Author(s):  
Rabia Mathakutha ◽  
Christien Steyn ◽  
Peter C. le Roux ◽  
Izak J. Blom ◽  
Steven L. Chown ◽  
...  
Keyword(s):  
Invasive Species ◽  
Plant Species ◽  
Functional Traits ◽  
Alien Plant Species ◽  
Alien Plant ◽  
Invasive Alien Plant ◽  
Non Invasive

scholarly journals Comparison of ecophysiological and leaf anatomical traits of native and invasive plant species

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Ridesti Rindyastuti ◽  
Lia Hapsari ◽  
Chaeho Byun
Keyword(s):  
Invasive Species ◽  
Plant Species ◽  
Invasive Plant ◽  
Plant Traits ◽  
Dry Weight ◽  
Imperata Cylindrica ◽  
Assimilate Transport ◽  
Invasive Plant Species ◽  
Non Invasive ◽  
Ecophysiological Traits

Abstract Background To address the lack of evidence supporting invasion by three invasive plant species (Imperata cylindrica, Lantana camara, and Chromolaena odorata) in tropical ecosystems, we compared the ecophysiological and leaf anatomical traits of these three invasive alien species with those of species native to Sempu Island, Indonesia. Data on four plant traits were obtained from the TRY Plant Trait Database, and leaf anatomical traits were measured using transverse leaf sections. Results Two ecophysiological traits including specific leaf area (SLA) and seed dry weight showed significant association with plant invasion in the Sempu Island Nature Reserve. Invasive species showed higher SLA and lower seed dry weight than non-invasive species. Moreover, invasive species showed superior leaf anatomical traits including sclerenchymatous tissue thickness, vascular bundle area, chlorophyll content, and bundle sheath area. Principal component analysis (PCA) showed that leaf anatomical traits strongly influenced with cumulative variances (100% in grass and 88.92% in shrubs), where I. cylindrica and C. odorata outperformed non-invasive species in these traits. Conclusions These data suggest that the traits studied are important for plant invasiveness since ecophysiological traits influence of light capture, plant growth, and reproduction while leaf anatomical traits affect herbivory, photosynthetic assimilate transport, and photosynthetic activity.

scholarly journals Plant–soil feedback contributes to predicting plant invasiveness of 68 alien plant species differing in invasive status

Oikos ◽  
2020 ◽  
Vol 129 (8) ◽  
pp. 1257-1270
Author(s):  
Anna Aldorfová ◽  
Pavlína Knobová ◽  
Zuzana Münzbergová
Keyword(s):  
Plant Species ◽  
Alien Plant Species ◽  
Alien Plant ◽  
Plant Soil ◽  
Soil Feedback ◽  
Invasive Status ◽  
Plant Invasiveness

scholarly journals Testing the enemy release hypothesis in a native insect species with an expanding range

PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1415 ◽  
Author(s):  
Julia J. Mlynarek
Keyword(s):  
Related Species ◽  
Enemy Release Hypothesis ◽  
Enemy Release ◽  
Infection Prevalence ◽  
Water Mite ◽  
Closely Related Species ◽  
Study Region ◽  
Ecological Release ◽  
Non Invasive ◽  
Enallagma Boreale

The enemy release hypothesis (ERH) predicts that the spread of (invasive) species will be facilitated by release from their enemies as they occupy new areas. However, the ERH is rarely tested on native (non-invasive, long established) species with expanding or shifting ranges. I tested the ERH for a native damselfly (Enallagma clausum) whose range has recently expanded in western Canada, with respect to its water mite and gregarine parasites. Parasitism levels (prevalence and intensity) were also compared betweenE. clausumand a closely related species,Enallagma boreale, which has long been established in the study region and whose range is not shifting. A total of 1,150 damselflies were collected at three ‘old’ sites forE. clausumin Saskatchewan, and three ‘new’ sites in Alberta. A little more than a quarter of the damselflies collected were parasitized with, on average, 18 water mite individuals, and 20% were parasitized by, on average, 10 gregarine individuals. I assessed whether the differences between levels of infection (prevalence and intensity) were due to site type or host species. The ERH was not supported:Enallagma clausumhas higher or the same levels of parasitism in new sites than old sites. However,E. borealeseems to be benefitting from the recent range expansion of a native, closely related species through ecological release from its parasites because the parasites may be choosing to infest the novel, potentially naïve, host instead of the well-established host.

Biological invasions as natural hazards: towards building a strategy to cope with invasive alien plants

2021 ◽  
Author(s):  
Alexandros Galanidis ◽  
Chrysanthi Michelaki ◽  
Panagiotis Dimitrakopoulos
Keyword(s):  
Risk Assessment ◽  
Biological Invasions ◽  
Natural Hazards ◽  
Management Strategies ◽  
Early Warning Systems ◽  
Alien Plants ◽  
Cultivated Plants ◽  
Alien Plant ◽  
Non Invasive ◽  
Prioritization Scheme

<p>Biological invasions can be compared to natural hazards as besides their environmental effect can also produce rapid and damaging socioeconomic impacts. Additionally, their causes and consequences are generally well understood yet difficult to predict, and their incidence is almost unfeasible to control. For both phenomena, it is their random and uncontrollable nature that demand planning for the worst. Therefore, biological invasions and natural hazards require similar management strategies and commitments.</p><p>The aim of this study was to support decision makers and stakeholders in Lesvos Island Greece in prioritizing high impact alien plant species. We applied an integrated framework that combined a literature review and a systematic roadside survey of alien plants presence, along with their distribution, abundances, habitat preferences and impacts. Relied on this solid base we structured a prioritization scheme that would identify and rank aliens according to their invasiveness and produce alert lists of the most invasive ones. Two Risk Assessment protocols were implemented: the European and Mediterranean Plant Protection Organization (EPPO) prioritization scheme, and the Australian Weed Risk Assessment (A-WRA). Each screening method delivered assessment lists that classified aliens as <em>invasive</em>, <em>possibly invasive</em>, and <em>non-invasive</em>. With the aim of benchmarking the performances of the two methods we compared their results with a third invasiveness estimation performed by a panel of experts at national level.</p><p>In total, 151 alien plants from 53 different families were found. The most abundant families were Asteraceae (10%), Amaranthaceae and Poaceae (9%), and Fabaceae (8%). A subset of 87 species, which excluded urban, ornamental, or cultivated plants with rare occurrences and no documented impacts, was assessed. According to the EPPO scheme, 8% of species categorized as invasive, 57% as possibly invasive and 34% as non-invasive. The A-WRA method was stricter, classifying 80% of species as invasive, 14% as possibly invasive and only 6% as non-invasive. Compared to expert’s opinion, EPPO scheme indicated a 10% match for invasive and a 43% for non-invasive species, whereas A-WRA an 83% and 14% respectively.</p><p>Main ranking differences between the two methods are due to the diverse input information each one requires, and to differences in the relevant importance of that information to the final ranking. A-WRA is a precautionary method that rejects even minor invaders, whereas EPPO method is a rapid prioritization tool that provides information for a subsequent appropriate Pest Risk Analysis. Our framework delivers critical information and can improve the development of early-warning systems that would promote successful preventative management strategies for biological invasions.</p><p><em><strong>Acknowledgements</strong>: This research is co-financed by Greece and the European Union (European Social Fund- ESF) through the Operational Programme “Human Resources Development, Education and Lifelong Learning 2014-2020” in the context of the project “An Integrative Framework for the Study of Alien Flora” (MIS 5049419).</em></p>

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