WEAK VS. STRONG INVADERS OF NATURAL PLANT COMMUNITIES: ASSESSING INVASIBILITY AND IMPACT

By Y. Ortega, D. Pearson. 2005

238 citations recorded by the source corpus.

Subfields: Ecology, Evolution, Behavior and Systematics, Insect Science, Nature and Landscape Conservation

View Paper: https://www.semanticscholar.org/paper/03a8384aef9c2ec31d38ac0d5747a4441802ecde

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In Ecology, Evolution, Behavior and Systematics

In Insect Science

In Nature and Landscape Conservation

Citations in the corpus

Non‐target effects of broadleaf herbicide on a native perennial forb: a demographic framework for assessing and minimizing impacts (2009, background): “This is an important consideration given the preponderance of forbs in many wildland areas where weed treatments take place (Mueggler and Stewart 1980; Ortega and Pearson 2005; Pokorny et al .”
Predicting the number of ecologically harmful exotic species in an aquatic system (2007, background): “The relationship between native diversity and the impacts of invaders is complex (Ortega & Pearson, 2005; Ruesink, 2007).”
Exotic invasive plants increase productivity, abundance of ammonia‐oxidizing bacteria and nitrogen availability in intermountain grasslands (2016, background): “Invasion by each of these species has been correlated with decreases in native species richness (Ortega & Pearson 2005), and C. stoebe and P. recta have been shown experimentally to have large impacts on native communities (Maron & Marler 2008).”
Field‐based competitive impacts between invaders and natives at varying resource supply (2008, background): “More generally, whether invasibility and impact scale linearly for other ‘strong invaders’ (sensu Ortega & Pearson 2005) or whether per capita effects of invaders differ is unclear (Levine et al. 2003), as few studies have experimentally examined the impacts of invaders on recipient assemblages…”
Current mismatch between research and conservation efforts: The need to study co-occurring invasive plant species (2013, background): “Competitive interactions might be particularly relevant in habitats that have a numerically dominant ‘strong’ invader and fewer individuals of ‘weak’ invaders (Ortega and Pearson, 2005).”
Mechanisms of Plant Invasions of North American and European Grasslands (2011, background): “This subset of invaders is a threat to at least local native species richness (Ortega & Pearson 2005, Hejda et al. 2009a) and, in combination with other global change drivers, may facilitate species extinctions (Wilcove et al. 1998).”
Negative per capita effects of purple loosestrife and reed canary grass on plant diversity of wetland communities (2006, background): “The organism may be a ‘weak invader’ and may colonize and persist at low abundance with minimal influence on other species, thus incrementally increasing species richness (Ortega & Pearson, 2005).”
Impacts of invasive Australian acacias: implications for management and restoration (2011, background): “Many invasive plant species are able to transform ecosystems (Richardson et al., 2000; Ortega & Pearson, 2005), resulting in losses of biodiversity, altered ecosystem functioning and a changed capacity to provide services (Vitousek et al., 1997; Pimentel, 2001; Levine et al., 2003; Didham et al.,…”
Biological consequences of invasion by reed canary grass (Phalaris arundinacea) (2009, background): “…Goodwin, Urbana, IL 61801, USA plants), assumed reductions in biodiversity are often based on anecdotal observation, such as when invaders form conspicuous stands (Ortega and Pearson 2005; Schmitz et al. 1997) or when the causes of oceanic island extinctions are considered (Simberloff 1995, 2000).”
Soil modification by invasive plants: effects on native and invasive species of mixed-grass prairies (2008, background): “All three of these species are ‘strong invaders’ (Ortega and Pearson 2005), able to become community dominants and to form nearly monospecific stands, and therefore we were particularly concerned with the effects of soil conditioning by these species on prospects for native restoration or reinvasion”
Impacts of restoration treatments on alien plant invasion in Pinus ponderosa forests, Montana, USA (2006, background): “Similar relationships have been documented following harvest in coastal Pacific north-west forests, USA (Thysell & Carey 2001) and southern Canadian boreal forests (Haeussler et al. 2002), and following prescribed burning in Australia (Milberg & Lamont 1995) and South America (Petryna et al. 2002).”
Identifying the most noxious invasive plants in China: role of geographical origin, life form and means of introduction (2009, background): “…by plant invasions (Mack et al. 2000), not all invaders are noxious (Smith et al. 2006), and there is a difference between invasive species that persist at relatively low numbers in a new habitat and those that dominate and become ecosystem engineers (Ortega and Pearson 2005; Strauss et al. 2006).”
Invasive species grows faster, competes better, and shows greater evolution toward increased seed size and growth than exotic non-invasive congeners (2012, background): “Successful invasions can occur for many reasons, but may involve traits that confer disproportionally strong per capita or population-based competitive advantages (Ortega and Pearson 2005).”
Seed size and provenance mediate the joint effects of disturbance and seed predation on community assembly (2012, background): “Although there are several common native annuals known to respond favourably to disturbance that we did not add to our plots (e.g. Ortega & Pearson 2005), the overwhelming majority of native grassland species in our region are perennials (Lackschewitz 1991).”
The invasiveness of an introduced species does not predict its impact (2007, background): “Introduced species that can rapidly achieve high densities may have greater establishment success (Kolar and Lodge 2001) and dominate invaded communities to the exclusion of native species (Ricciardi et al. 1996; Ortega and Pearson 2005).”
Herbivory, time since introduction and the invasiveness of exotic plants (2005, background): “However, introduced plants vary substantially in their impact on native communities (Ortega & Pearson 2005) and the inclusion of less invasive weeds in studies testing the enemy release hypothesis may obscure the importance of herbivore release for a few highly invasive species.”
Diversity declines in Microstegium vimineum (Japanese stiltgrass) patches (2009, background): “Uninvaded areas are frequently used as control plots (Kotanen, 1997; Alvarez and Cushman, 2002; Ortega and Pearson, 2005); however, paired plots that are immediately adjacent to each other located at multiple sites separated by several kilometers is an uncommon but advantageous design (Chabrerie et…”