A meta-analysis of biotic resistance to exotic plant invasions
... Kennedy et al. 2002). This is not to say that resistant communities repel all potential invaders, but rather that some invaders are absent because of interactions with resident species. This perspective was most influentially laid out by Charles Elton who in his 1958 classic book, The Ecology of Inv ...
... Kennedy et al. 2002). This is not to say that resistant communities repel all potential invaders, but rather that some invaders are absent because of interactions with resident species. This perspective was most influentially laid out by Charles Elton who in his 1958 classic book, The Ecology of Inv ...
A metaanalysis of biotic resistance to exotic plant invasions
... Kennedy et al. 2002). This is not to say that resistant communities repel all potential invaders, but rather that some invaders are absent because of interactions with resident species. This perspective was most influentially laid out by Charles Elton who in his 1958 classic book, The Ecology of Inv ...
... Kennedy et al. 2002). This is not to say that resistant communities repel all potential invaders, but rather that some invaders are absent because of interactions with resident species. This perspective was most influentially laid out by Charles Elton who in his 1958 classic book, The Ecology of Inv ...
A taste for exotic food: Neotropical land planarians feeding on an
... elements in their ecosystem. The planarian Endeavouria septemlineata, first recorded in Hawaii, was later registered in Australia and Brazil. Recently we found it in humandisturbed areas in southern Brazil and here we investigate its interactions with other invertebrates both in the field and in the ...
... elements in their ecosystem. The planarian Endeavouria septemlineata, first recorded in Hawaii, was later registered in Australia and Brazil. Recently we found it in humandisturbed areas in southern Brazil and here we investigate its interactions with other invertebrates both in the field and in the ...
global strategy for addressing the problem of invasive alien species
... world. Indeed, the lives of people everywhere have been greatly enriched by being able to gain access to a greater share of the world's biological diversity. Expanding global trade is providing additional opportunities for further such enrichment, as well as imposing new species on ecosystems. 2. A ...
... world. Indeed, the lives of people everywhere have been greatly enriched by being able to gain access to a greater share of the world's biological diversity. Expanding global trade is providing additional opportunities for further such enrichment, as well as imposing new species on ecosystems. 2. A ...
2016: Invasive Species - Manitoba Forestry Association
... environments. A lack of natural barriers, predators, and intraspecific competition may allow them to spread quickly throughout the new region. Aggressive competitors Most invasive species are superior competitors to native species. They may be more effective at obtaining resources like food, water, ...
... environments. A lack of natural barriers, predators, and intraspecific competition may allow them to spread quickly throughout the new region. Aggressive competitors Most invasive species are superior competitors to native species. They may be more effective at obtaining resources like food, water, ...
Ecological impacts of invasive cane toads
... none showed major impairment of growth, survival or locomotor performance. One native tree-frog (L. caerulea) retained high infection levels with few ill effects, suggesting that we might be able to use this taxon as a reservoir species to build up local parasite densities for toad management. ...
... none showed major impairment of growth, survival or locomotor performance. One native tree-frog (L. caerulea) retained high infection levels with few ill effects, suggesting that we might be able to use this taxon as a reservoir species to build up local parasite densities for toad management. ...
Alien plant invasions in tropical and sub
... are the dominant vegetation type in Africa (Scholes 1997), occupying about 65% of the continent (Huntley and Walker 1982). About a fifth of the global human population and a large proportion of the world’s ungulates (wild and livestock) are found in savannas (Lehmann et al. 2009). A wealth of knowle ...
... are the dominant vegetation type in Africa (Scholes 1997), occupying about 65% of the continent (Huntley and Walker 1982). About a fifth of the global human population and a large proportion of the world’s ungulates (wild and livestock) are found in savannas (Lehmann et al. 2009). A wealth of knowle ...
1. Invasive species and their impacts
... environments. A lack of natural barriers, predators, and intraspecific competition may allow them to spread quickly throughout the new region. Aggressive competitors Most invasive species are superior competitors to native species. They may be more effective at obtaining resources like food, water, ...
... environments. A lack of natural barriers, predators, and intraspecific competition may allow them to spread quickly throughout the new region. Aggressive competitors Most invasive species are superior competitors to native species. They may be more effective at obtaining resources like food, water, ...
Progress toward understanding the ecological impacts of nonnative
... herbivorous insects released to control European spotted knapweed (Centaurea maculosa) in North America occasionally exacerbate knapweed’s negative effects on neighboring native plants (Callaway et al. 1999). Yet, although impacts are highly context dependent and potentially complex, they are not en ...
... herbivorous insects released to control European spotted knapweed (Centaurea maculosa) in North America occasionally exacerbate knapweed’s negative effects on neighboring native plants (Callaway et al. 1999). Yet, although impacts are highly context dependent and potentially complex, they are not en ...
Propagule pressure: a null model for biological invasions
... in, spread to, or become abundant in novel communities) and invasibility (i.e. the susceptibility of habitats to the establishment or proliferation of invaders). There were few consistencies among invasiveness characteristics (3 of 13): established and abundant invaders generally occupy similar habi ...
... in, spread to, or become abundant in novel communities) and invasibility (i.e. the susceptibility of habitats to the establishment or proliferation of invaders). There were few consistencies among invasiveness characteristics (3 of 13): established and abundant invaders generally occupy similar habi ...
Implementing invasive species control: a case study of multi
... 2010). Launched in 1997, this program was developed to protect and improve the natural and recreational resources of the watershed. Program participants address issues of water quality, forest management, air quality, transportation, recreational and scenic resources, and facilitate scientific resea ...
... 2010). Launched in 1997, this program was developed to protect and improve the natural and recreational resources of the watershed. Program participants address issues of water quality, forest management, air quality, transportation, recreational and scenic resources, and facilitate scientific resea ...
(2001) Global Strategy on Invasive Alien Species.
... exacerbated by global change and chemical and physical disturbance to species and ecosystems. Continuing globalisation, with increasing trade, travel, and transport of goods across borders, has brought tremendous benefits to many people. It has, however, also facilitated the spread of IAS with incre ...
... exacerbated by global change and chemical and physical disturbance to species and ecosystems. Continuing globalisation, with increasing trade, travel, and transport of goods across borders, has brought tremendous benefits to many people. It has, however, also facilitated the spread of IAS with incre ...
Download technical report 191
... Legislation and Regulatory Requirements ................................................................................................................................... 45 The Environmental Protection Agency (EPA) .................................................................................. ...
... Legislation and Regulatory Requirements ................................................................................................................................... 45 The Environmental Protection Agency (EPA) .................................................................................. ...
Impacts of Invasive Species on Food Webs: A Review of Empirical
... appears “anthropocentric” and subjective despite its use in a policy context. As a consequence, for the purpose of this review, we have chosen not to include the notion of “harmfulness” in our definition of invasive species. In the following we adopt the convention of using “invasive species” to cha ...
... appears “anthropocentric” and subjective despite its use in a policy context. As a consequence, for the purpose of this review, we have chosen not to include the notion of “harmfulness” in our definition of invasive species. In the following we adopt the convention of using “invasive species” to cha ...
Invisible invaders: non-pathogenic invasive microbes in aquatic and
... invasions by viruses, bacteria, fungi and protists occur worldwide but are much harder to detect than invasions by macroorganisms. Invasive microbes have the potential to significantly alter community structure and ecosystem functioning in diverse terrestrial and aquatic ecosystems. Consequently, in ...
... invasions by viruses, bacteria, fungi and protists occur worldwide but are much harder to detect than invasions by macroorganisms. Invasive microbes have the potential to significantly alter community structure and ecosystem functioning in diverse terrestrial and aquatic ecosystems. Consequently, in ...
Advancing the science of microbial symbiosis to
... harmful invaders experienced a greater decline in pathogen infection from native to invaded range than weak invaders. Because most natural plant communities have diverse resident pathogens, successful invaders are likely to encounter non-adapted pathogens that cause less damage relative to what they ...
... harmful invaders experienced a greater decline in pathogen infection from native to invaded range than weak invaders. Because most natural plant communities have diverse resident pathogens, successful invaders are likely to encounter non-adapted pathogens that cause less damage relative to what they ...
The Invasive Non-Native Species Framework Strategy for Great Britain
... Britain (GB) where they contribute to economic and social well-being through, for example, agriculture, forestry, horticulture, fisheries and the pet sector. Many other species have been introduced accidentally. Audits conducted by Scottish Natural Heritage and the former English Nature identified 9 ...
... Britain (GB) where they contribute to economic and social well-being through, for example, agriculture, forestry, horticulture, fisheries and the pet sector. Many other species have been introduced accidentally. Audits conducted by Scottish Natural Heritage and the former English Nature identified 9 ...
Invasive alien species: priorities for international research
... IAS. Such work may be best undertaken collaboratively (for example, with other EC Member States with overseas countries and territories) because the results are likely to be applicable to many other small islands where IAS are a problem. ...
... IAS. Such work may be best undertaken collaboratively (for example, with other EC Member States with overseas countries and territories) because the results are likely to be applicable to many other small islands where IAS are a problem. ...
A Global Review of the Distribution, Taxonomy, and Impacts of
... We formally tested whether the number of invaders in a given family was significantly higher or lower than expected by chance. The two green algal families Caulerpaceae and Codiaceae, which contain some of the most well-known introduced seaweed genera (Caulerpa and Codium), contain significantly more ...
... We formally tested whether the number of invaders in a given family was significantly higher or lower than expected by chance. The two green algal families Caulerpaceae and Codiaceae, which contain some of the most well-known introduced seaweed genera (Caulerpa and Codium), contain significantly more ...
Disruption of ant-seed dispersal mutualisms by the invasive Asian
... assemblages, invasive ants can have effects across trophic levels. Most studies to date, however, have focused on the impacts just two species (Linepithema humile and Solenopsis invicta). The impacts of many other invasive ant species on ecological processes in their introduced range are unknown. In ...
... assemblages, invasive ants can have effects across trophic levels. Most studies to date, however, have focused on the impacts just two species (Linepithema humile and Solenopsis invicta). The impacts of many other invasive ant species on ecological processes in their introduced range are unknown. In ...
Invasive algae Caulerpa taxifolia
... Caulerpa taxifolia is a native alga of Hawai‘i, where it has not demonstrated any invasive tendencies. However, this common green alga has gained wide notoriety from its large outbreaks after accidental introduction in the Mediterranean and California. Due to the Mediterranean strain’s high growth r ...
... Caulerpa taxifolia is a native alga of Hawai‘i, where it has not demonstrated any invasive tendencies. However, this common green alga has gained wide notoriety from its large outbreaks after accidental introduction in the Mediterranean and California. Due to the Mediterranean strain’s high growth r ...
Orconectes rusticus_Govas_2011
... candidacy for invasiveness (Wilson et al. 2004). O. rusticus are found in freshwater lakes, ponds and streams. Within these bodies of water they can be found in low-flow pooling areas and areas with moderate rates of flow excluding high flow areas within lakes and rivers. Observed preference of subs ...
... candidacy for invasiveness (Wilson et al. 2004). O. rusticus are found in freshwater lakes, ponds and streams. Within these bodies of water they can be found in low-flow pooling areas and areas with moderate rates of flow excluding high flow areas within lakes and rivers. Observed preference of subs ...
American Bullfrog - Oregon State University
... to breathe and it causes skin sloughing. The larval/ tadpole is less susceptible to this problem because they do not have keratin in their skin which is what chtrid eats. In a recent study at Oregon State Univer sity, researchers found that contrary to previous belief, bullfrogs are actually not im ...
... to breathe and it causes skin sloughing. The larval/ tadpole is less susceptible to this problem because they do not have keratin in their skin which is what chtrid eats. In a recent study at Oregon State Univer sity, researchers found that contrary to previous belief, bullfrogs are actually not im ...
alumni garry oak meadow restoration project
... domestic farming techniques (Bein and Eastman, 2006). After this period, the area was seeded with agronomic grass species and was used for hay (Bein and Eastman, 2006). In 1956, through the co-operation of the Department of National Defense and the Hudson's Bay Company, the 1.6 km² campus of the Uni ...
... domestic farming techniques (Bein and Eastman, 2006). After this period, the area was seeded with agronomic grass species and was used for hay (Bein and Eastman, 2006). In 1956, through the co-operation of the Department of National Defense and the Hudson's Bay Company, the 1.6 km² campus of the Uni ...
Using ecological restoration to constrain biological invasion
... restoration is ‘the process of assisting the recovery of an ecosystem that has been degraded, damaged, or destroyed’ (SER 2002) and often involves the planting of native species associated with later successional stages. Negative correlations between abundances of native and introduced species (Ande ...
... restoration is ‘the process of assisting the recovery of an ecosystem that has been degraded, damaged, or destroyed’ (SER 2002) and often involves the planting of native species associated with later successional stages. Negative correlations between abundances of native and introduced species (Ande ...
Invasive species
An invasive species is a plant or animal that is not native to a specific location (an introduced species); and has a tendency to spread, which is believed to cause damage to the environment, human economy and/or human health.One study pointed out widely divergent perceptions of the criteria for invasive species among researchers (p. 135) and concerns with the subjectivity of the term ""invasive"" (p. 136). Some of the alternate usages of the term are below:The term as most often used applies to introduced species (also called ""non-indigenous"" or ""non-native"") that adversely affect the habitats and bioregions they invade economically, environmentally, and/or ecologically. Such invasive species may be either plants or animals and may disrupt by dominating a region, wilderness areas, particular habitats, or wildland-urban interface land from loss of natural controls (such as predators or herbivores). This includes non-native invasive plant species labeled as exotic pest plants and invasive exotics growing in native plant communities. It has been used in this sense by government organizations as well as conservation groups such as the International Union for Conservation of Nature (IUCN) and the California Native Plant Society. The European Union defines ""Invasive Alien Species"" as those that are, firstly, outside their natural distribution area, and secondly, threaten biological diversity. It is also used by land managers, botanists, researchers, horticulturalists, conservationists, and the public for noxious weeds. The kudzu vine (Pueraria lobata), Andean Pampas grass (Cortaderia jubata), and yellow starthistle (Centaurea solstitialis) are examples.An alternate usage broadens the term to include indigenous or ""native"" species along with non-native species, that have colonized natural areas (p. 136). Deer are an example, considered to be overpopulating their native zones and adjacent suburban gardens, by some in the Northeastern and Pacific Coast regions of the United States.Sometimes the term is used to describe a non-native or introduced species that has become widespread (p. 136). However, not every introduced species has adverse effects on the environment. A nonadverse example is the common goldfish (Carassius auratus), which is found throughout the United States, but rarely achieves high densities (p. 136).