scholarly journals Relative roles of climatic suitability and anthropogenic influence in determining the pattern of spread in a global invader

2010 ◽  
Vol 108 (1) ◽  
pp. 220-225 ◽  
Author(s):  
Núria Roura-Pascual ◽  
Cang Hui ◽  
Takayoshi Ikeda ◽  
Gwénaël Leday ◽  
David M. Richardson ◽  
...  
Keyword(s):  
Invasive Species ◽  
Biotic Resistance ◽  
Propagule Pressure ◽  
Distribution Patterns ◽  
Global Scale ◽  
Invasion Success ◽  
Climatic Suitability ◽  
Natural Ecosystems ◽  
Widespread Species ◽  
Human Modification

Because invasive species threaten the integrity of natural ecosystems, a major goal in ecology is to develop predictive models to determine which species may become widespread and where they may invade. Indeed, considerable progress has been made in understanding the factors that influence the local pattern of spread for specific invaders and the factors that are correlated with the number of introduced species that have become established in a given region. However, few studies have examined the relative importance of multiple drivers of invasion success for widespread species at global scales. Here, we use a dataset of >5,000 presence/absence records to examine the interplay between climatic suitability, biotic resistance by native taxa, human-aided dispersal, and human modification of habitats, in shaping the distribution of one of the world's most notorious invasive species, the Argentine ant (Linepithema humile). Climatic suitability and the extent of human modification of habitats are primarily responsible for the distribution of this global invader. However, we also found some evidence for biotic resistance by native communities. Somewhat surprisingly, and despite the often cited importance of propagule pressure as a crucial driver of invasions, metrics of the magnitude of international traded commodities among countries were not related to global distribution patterns. Together, our analyses on the global-scale distribution of this invasive species provide strong evidence for the interplay of biotic and abiotic determinants of spread and also highlight the challenges of limiting the spread and subsequent impact of highly invasive species.

scholarly journals Plant invasions: merging the concepts of species invasiveness and community invasibility

2006 ◽  
Vol 30 (3) ◽  
pp. 409-431 ◽  
Author(s):  
David M. Richardson ◽  
Petr Pyšek
Keyword(s):  
Biotic Resistance ◽  
Propagule Pressure ◽  
Plant Invasions ◽  
Invasion Ecology ◽  
Natural Ecosystems ◽  
Long Distance ◽  
Fluctuating Resources ◽  
Species Invasiveness ◽  
Tens Rule ◽  
New Research

This paper considers key issues in plant invasion ecology, where findings published since 1990 have significantly improved our understanding of many aspects of invasions. The review focuses on vascular plants invading natural and semi-natural ecosystems, and on fundamental ecological issues relating to species invasiveness and community invasibility. Three big questions addressed by the SCOPE programme in the 1980s (which species invade; which habitats are invaded; and how can we manage invasions?) still underpin most work in invasion ecology. Some organizing and unifying themes in the field are organism-focused and relate to species invasiveness (the tens rule; the concept of residence time; taxonomic patterns and Darwin’s naturalization hypothesis; issues of phenotypic plasticity and rapid evolutionary change, including evolution of increased competitive ability hypothesis; the role of long-distance dispersal). Others are ecosystem-centred and deal with determinants of the invasibility of communities, habitats and regions (levels of invasion, invasibility and propagule pressure; the biotic resistance hypothesis and the links between diversity and invasibility; synergisms, mutualisms, and invasional meltdown). Some theories have taken an overarching approach to plant invasions by integrating the concepts of species invasiveness and community invasibility (a theory of seed plant invasiveness; fluctuating resources theory of invasibility). Concepts, hypotheses and theories reviewed here can be linked to the naturalization-invasion continuum concept, which relates invasion processes with a sequence of environmental and biotic barriers that an introduced species must negotiate to become casual, naturalized and invasive. New research tools and improved research links between invasion ecology and succession ecology, community ecology, conservation biology and weed science, respectively, have strengthened the conceptual pillars of invasion ecology.

scholarly journals A novel metric reveals biotic resistance potential and informs predictions of invasion success

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Ross N. Cuthbert ◽  
Amanda Callaghan ◽  
Jaimie T. A. Dick
Keyword(s):  
Biotic Resistance ◽  
Global Scale ◽  
Invasion Success ◽  
Feeding Rates ◽  
Functional Responses ◽  
Predictive Capacity ◽  
Prey Switching ◽  
Prey Preferences ◽  
Ecological Concepts ◽  
Frequency Independent

Abstract Invasive species continue to proliferate and detrimentally impact ecosystems on a global scale. Whilst impacts are well-documented for many invaders, we lack tools to predict biotic resistance and invasion success. Biotic resistance from communities may be a particularly important determinant of the success of invaders. The present study develops traditional ecological concepts to better understand and quantify biotic resistance. We quantified predation towards the highly invasive Asian tiger mosquito Aedes albopictus and a representative native mosquito Culex pipiens by three native and widespread cyclopoid copepods, using functional response and prey switching experiments. All copepods demonstrated higher magnitude type II functional responses towards the invasive prey over the analogous native prey, aligned with higher attack and maximum feeding rates. All predators exhibited significant, frequency-independent prey preferences for the invader. With these results, we developed a novel metric for biotic resistance which integrates predator numerical response proxies, revealing differential biotic resistance potential among predators. Our results are consistent with field patterns of biotic resistance and invasion success, illustrating the predictive capacity of our methods. We thus propose the further development of traditional ecological concepts, such as functional responses, numerical responses and prey switching, in the evaluation of biotic resistance and invasion success.

scholarly journals Are Introduced Alien Species More Predisposed to Invasion in Recipient Environments If They Provide a Wider Range of Services to Humans?

Diversity ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 553
Author(s):  
Kowiyou Yessoufou ◽  
Annie Estelle Ambani
Keyword(s):  
South Africa ◽  
Invasive Species ◽  
Alien Species ◽  
Propagule Pressure ◽  
Phylogenetic Signal ◽  
Dna Barcode ◽  
Alien Plants ◽  
Invasion Success ◽  
Alien Invasive Species ◽  
Unexpected Finding

The drivers of invasion success of alien species remain, to some extent, a matter of debate. Here, we suggest that the services (the benefits humans obtain from a species) provided by alien plants could predict their invasion status, such that alien species providing more services would be more likely to be invasive than not. The rationale for this expectation is that alien species providing multiple services stand a better chance of being introduced in various numbers and multiple times outside their native range (propagule pressure theory). We investigated this hypothesis on alien woody species in South Africa. First, we defined 12 services provided by all the 210 known naturalized alien woody plants in South Africa. Then, we tested for a phylogenetic signal in these services using a DNA barcode-based phylogeny. Finally, we tested for potential links between the services and invasion status by fitting GLM models with appropriate error families. We found a phylogenetic signal in most services, suggesting that closely related species tend to provide similar services. Counter-intuitively, we consistently found that alien non-invasive species tend to provide more services, or even unique services, in comparison to alien invasive species. Although alternative scenarios are plausible to explain this unexpected finding, we speculate that harvesting alien plants for human benefits may limit their invasion ability. This warrants further investigation.

scholarly journals Biotic resistance shapes the influence of propagule pressure on invasion success in bacterial communities

Ecology ◽  
2017 ◽  
Vol 98 (7) ◽  
pp. 1743-1749 ◽  
Author(s):  
Matt L. Jones ◽  
Josep Ramoneda ◽  
Damian W. Rivett ◽  
Thomas Bell
Keyword(s):  
Bacterial Communities ◽  
Biotic Resistance ◽  
Propagule Pressure ◽  
Invasion Success

scholarly journals Biotic resistance and vegetative propagule pressure co-regulate the invasion success of a marine clonal macrophyte

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Elena Balestri ◽  
Flavia Vallerini ◽  
Virginia Menicagli ◽  
Sara Barnaba ◽  
Claudio Lardicci
Keyword(s):  
Biotic Resistance ◽  
Propagule Pressure ◽  
Invasion Success ◽  
Vegetative Propagule

scholarly journals Analysis of propagule pressure and genetic diversity in the invasibility of a freshwater apex predator: the peacock bass (genus Cichla)

2014 ◽  
Vol 12 (1) ◽  
pp. 105-116 ◽  
Author(s):  
Daniel C. Carvalho ◽  
Denise A. A. Oliveira ◽  
Iracilda Sampaio ◽  
Luciano B. Beheregaray
Keyword(s):  
Genetic Diversity ◽  
Genetic Variation ◽  
Amazon Basin ◽  
Biotic Resistance ◽  
Propagule Pressure ◽  
Invasion Success ◽  
Southeastern Brazil ◽  
Feeding Strategies ◽  
Apex Predator ◽  
Biological Variables

An important step in invasive biology is to assess biological variables that could be used to predict invasion success. The study of genetics, evolution, and interactions of invasive and native species in invaded ranges provides a unique opportunity to study processes in population genetics and the capability of a species' range expansion. Here, we used information from microsatellite DNA markers to test if genetic variation relates to propagule pressure in the successful invasion of an apex predator (the Amazonian cichlid Cichla) into Southeastern Brazilian River systems. Invasive populations of Cichla have negatively impacted many freshwater communities in Southeastern Brazil since the 1960s. Reduction of genetic variation was observed in all invasive populations for both Cichla kelberi (CK) and Cichla piquiti(CP). For instance, heterozygosity was lower in the invasive range when compared to native populations from the Amazon basin (CP HE= 0.179/0.44; CK HE= 0.258/0.536 respectively). Therefore, despite the successful invasion of Cichla in southeast Brazil, low genetic diversity was observed in the introduced populations. We suggest that a combination of factors, such as Cichla's reproductive and feeding strategies, the "evolutionary trap" effect and the biotic resistance hypothesis, overcome their depauperete genetic diversity, being key aspects in this apex predator invasion.

scholarly journals Biotic Resistance of Native Communities and Alien Propagule Pressure are Consistent Predictors of Invasion Success During Grassland Establishment

2021 ◽  
Author(s):  
Sandra Liliana Rojas-Botero ◽  
Johannes Kollmann ◽  
Leonardo H. Teixeira
Keyword(s):  
Invasive Plants ◽  
Biotic Resistance ◽  
Propagule Pressure ◽  
N Fertilization ◽  
Invasion Success ◽  
Native Community ◽  
Environmental Fluctuation ◽  
Native Communities ◽  
Propagule Size ◽  
Key Driver

Abstract Invasive alien plants challenge ecosystems restoration. Thus, understanding factors determining the establishment of invasive plants is crucial to improve restoration outcomes. Some key drivers of invasibility of plant communities have been studied, but results are inconsistent, and combined effects have not been addressed. We investigated the contribution of three drivers of invasion success during early phases of restoration, i.e., biotic resistance, invasive propagule pressure, and environmental fluctuations.We compared the contribution of these drivers in a series of mesocosms experiments using designed grasslands as a model system, and Solidago gigantea as invasive model species. Two grassland communities were designed according to competitive trait hierarchies with different sowing patterns, reflecting variation in biotic resistance. We then manipulated invader propagule pressure and applied different scenarios of environmental fluctuation, i.e., flood, heat, and N fertilization. Alien biomass was considered as proxy for invasion success, while native biomass represented restoration success.There were consistent effects of biotic resistance to S. gigantea invasion via competitive trait hierarchies in the three experiments. Communities dominated by species with high-competition traits were more resistant regardless of environmental fluctuation. Clumped seeding of the native community reduced invasibility, whereas larger invasive propagule size increased invasion. The effects of environmental fluctuation were less consistent and context-dependent, thus playing a secondary role when compared to biological drivers of invasion. Restoration initiatives on grasslands impacted by invasive plants should consider biotic resistance of the restored community as a key driver and the importance of controlling further arrivals of invasive species during community assembly.

scholarly journals The interplay between propagule pressure, seed predation and ectomycorrhizal fungi in plant invasion

NeoBiota ◽  
2019 ◽  
Vol 42 ◽  
pp. 45-58
Author(s):  
Jaime Moyano ◽  
Mariana C. Chiuffo ◽  
Nahuel Policelli ◽  
Martin A. Nuñez ◽  
Mariano A. Rodriguez-Cabal
Keyword(s):  
Ectomycorrhizal Fungi ◽  
Seed Predation ◽  
Root Colonization ◽  
Biotic Resistance ◽  
Propagule Pressure ◽  
Soil Samples ◽  
Invasion Success ◽  
Interactive Effects ◽  
Pine Plantation ◽  
Study Region

There are many hypotheses aiming to explain invasion success, but evaluating individual hypotheses in isolation may hinder our ability to understand why some species invade and others fail. Here we evaluate the interaction between propagule pressure, seed predation and missed mutualism in the invasion success of the pine, Pinusponderosa. We evaluated the independent and interactive effects of propagule pressure and seed predation at increasing distances from a pine plantation. Additionally, because pines are obligate mutualists with ectomycorrhizal fungi (EMF) and pine invasions fail in the absence of their EMF symbionts, we evaluated EMF availability through a growth chamber bioassay. In this bioassay we measured root colonization by EMF with soil samples collected from the different distances from the plantation. We found that propagule pressure overwhelms seed predation only at the edge of the pine plantation, while seed predation overcomes propagule pressure at 25 m and further distances from the plantation. We also found that EMF root colonization decreases with distance from the plantation. However, pine roots were colonized up to 200 m from the plantation, suggesting that EMF may not be hindering invasion, at least not on the scale of this experiment. Taken together our results demonstrate that seed predation may be limiting the invasion of P.ponderosa in the study region as propagule pressure only overcomes seed predation at the plantation edge. Here we provide evidence of how strong biotic resistance can suppress an invasion, regardless of the variation in propagule pressure and the availability of mutualists.

scholarly journals Dynamics of an experimental microbial invasion

2015 ◽  
Vol 112 (37) ◽  
pp. 11594-11599 ◽  
Author(s):  
Francisco Acosta ◽  
Richard M. Zamor ◽  
Fares Z. Najar ◽  
Bruce A. Roe ◽  
K. David Hambright
Keyword(s):  
Microbial Community ◽  
Environmental Changes ◽  
Biotic Resistance ◽  
Propagule Pressure ◽  
Microbial Community Composition ◽  
Invasion Success ◽  
Community Diversity ◽  
Species Invasions ◽  
Southern Us ◽  
Microbial Invasion

The ecological dynamics underlying species invasions have been a major focus of research in macroorganisms for the last five decades. However, we still know little about the processes behind invasion by unicellular organisms. To expand our knowledge of microbial invasions, we studied the roles of propagule pressure, nutrient supply, and biotic resistance in the invasion success of a freshwater invasive alga, Prymnesium parvum, using microcosms containing natural freshwater microbial assemblages. Microcosms were subjected to a factorial design with two levels of nutrient-induced diversity and three levels of propagule pressure, and incubated for 7 d, during which P. parvum densities and microbial community composition were tracked. Successful invasion occurred in microcosms receiving high propagule pressure whereas nutrients or community diversity played no role in invasion success. Invaded communities experienced distinctive changes in composition compared with communities where the invasion was unsuccessful. Successfully invaded microbial communities had an increased abundance of fungi and ciliates, and decreased abundances of diatoms and cercozoans. Many of these changes mirrored the microbial community changes detected during a natural P. parvum bloom in the source system. This role of propagule pressure is particularly relevant for P. parvum in the reservoir-dominated southern United States because this species can form large, sustained blooms that can generate intense propagule pressures for downstream sites. Human impact and global climate change are currently causing widespread environmental changes in most southern US freshwater systems that may facilitate P. parvum establishment and, when coupled with strong propagule pressure, could put many more systems at risk for invasion.

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