global strategy on invasive alien species
... 1. Global trade has enabled modern societies to benefit from the unprecedented movement and establishment of species around the world. Agriculture, forestry, fisheries, the pet trade, the horticultural industry, and many industrial consumers of raw materials today depend on species that are native t ...
... 1. Global trade has enabled modern societies to benefit from the unprecedented movement and establishment of species around the world. Agriculture, forestry, fisheries, the pet trade, the horticultural industry, and many industrial consumers of raw materials today depend on species that are native t ...
Invasion processes and causes of success.
... invasions represent unique opportunities to study dynamics that can otherwise be difficult to observe (Elton 1958). Invasive ants are excellent organisms with which to pursue this goal, in part because ants as a group play a variety of important ecological roles within biological communities (Hölld ...
... invasions represent unique opportunities to study dynamics that can otherwise be difficult to observe (Elton 1958). Invasive ants are excellent organisms with which to pursue this goal, in part because ants as a group play a variety of important ecological roles within biological communities (Hölld ...
A quicker return energyuse strategy by populations of a subtropical
... whether plants from invasive populations of a species show reduced allocation to defence and increased allocation to growth than plants from native populations. But few have attempted to understand ecophysiological mechanisms by which decreased allocation to defence may increase growth. 2. Previousl ...
... whether plants from invasive populations of a species show reduced allocation to defence and increased allocation to growth than plants from native populations. But few have attempted to understand ecophysiological mechanisms by which decreased allocation to defence may increase growth. 2. Previousl ...
Understanding the Invasion Ecology of Exotic Crayfish in California
... Not surprisingly, the greater the density of crayfish, the greater the impact on benthic populations. Regardless of crayfish density, however, their per capita prey consumption was relatively constant. Crowding was observed to lead to aggressive behavior among crayfish. Aggression was also correlate ...
... Not surprisingly, the greater the density of crayfish, the greater the impact on benthic populations. Regardless of crayfish density, however, their per capita prey consumption was relatively constant. Crowding was observed to lead to aggressive behavior among crayfish. Aggression was also correlate ...
EN EN EXPLANATORY MEMORANDUM 1. CONTEXT OF THE
... ecosystem services, especially in geographically and evolutionary isolated ecosystems, such as small islands, and the risks such species pose may be greater due to increased global trade, transport, tourism and climate change. ...
... ecosystem services, especially in geographically and evolutionary isolated ecosystems, such as small islands, and the risks such species pose may be greater due to increased global trade, transport, tourism and climate change. ...
Biotechnology and Plant Health International Regulatory Approaches
... species that may be invasive and that directly or indirectly affect plants or plant products should be assessed, monitored and managed, if necessary, according to IPPC provisions ...
... species that may be invasive and that directly or indirectly affect plants or plant products should be assessed, monitored and managed, if necessary, according to IPPC provisions ...
The Landscape Ecology of Invasive Spread
... (i.e., amount of habitat destruction). The specific threshold at which that occurs, however, depends on the pattern of disturbance (i.e., the degree of fragmentation). To illustrate, consider an invasive plant that can spread only to neighboring cells (dispersal neighborhood, n 4 cells), provided ...
... (i.e., amount of habitat destruction). The specific threshold at which that occurs, however, depends on the pattern of disturbance (i.e., the degree of fragmentation). To illustrate, consider an invasive plant that can spread only to neighboring cells (dispersal neighborhood, n 4 cells), provided ...
Address
... (Compositae) is native to North, Central, and South America but is a noxious invasive perennial herb or subshrub throughout much of Asia, Oceania, and Africa. It was first introduced into India as an ornamental plant in the middle of the 19th Century, and now has become one of the most invasive spec ...
... (Compositae) is native to North, Central, and South America but is a noxious invasive perennial herb or subshrub throughout much of Asia, Oceania, and Africa. It was first introduced into India as an ornamental plant in the middle of the 19th Century, and now has become one of the most invasive spec ...
Meeting the Challenge of Invasive Plants: A Framework for Action
... Team and Field Staff, and multiple partners. We greatly appreciate their leadership, guidance, support and expertise. Thanks also to Ray Rustem, who supported the project at its inception and provided valuable information regarding the Invasive Species Advisory Council and related legislation. We th ...
... Team and Field Staff, and multiple partners. We greatly appreciate their leadership, guidance, support and expertise. Thanks also to Ray Rustem, who supported the project at its inception and provided valuable information regarding the Invasive Species Advisory Council and related legislation. We th ...
The Distribution, Abundance And Ecological Impacts Of Invasive
... This study was made possible through the help of various people. It is however not possible to mention each and everyone’s name here, but I sincerely appreciate and thank all of them. First, I would like to express my thanks to Dr. John Mworia and Dr. Nathan Gichuki my supervisors for their invaluab ...
... This study was made possible through the help of various people. It is however not possible to mention each and everyone’s name here, but I sincerely appreciate and thank all of them. First, I would like to express my thanks to Dr. John Mworia and Dr. Nathan Gichuki my supervisors for their invaluab ...
Differential population responses of native and alien rodents to an
... the non-native prey are either superior competitors or are mesopredators of the native prey (termed the mesopredator release effect) [9]. Such an unwanted outcome occurs when top-down forces, rather than bottom-up forces, control the non-native prey populations [10,15]. Moreover, anthropogenic habit ...
... the non-native prey are either superior competitors or are mesopredators of the native prey (termed the mesopredator release effect) [9]. Such an unwanted outcome occurs when top-down forces, rather than bottom-up forces, control the non-native prey populations [10,15]. Moreover, anthropogenic habit ...
Roles of parasites in animal invasions
... predators and parasites. For example, parasite-mediated apparent competition might occur when (i) the parasite differentially affects one competitor, reducing its population growth rate and abundance and hence competitive impact on another species or (ii) one host species acts as a reservoir for the ...
... predators and parasites. For example, parasite-mediated apparent competition might occur when (i) the parasite differentially affects one competitor, reducing its population growth rate and abundance and hence competitive impact on another species or (ii) one host species acts as a reservoir for the ...
Rusty Crayfish
... Rusty Crayfish are being spread in North America in bait buckets by fisherman. Once introduced, they can spread quickly into new habitats as they are opportunistic feeders, and resistant to a wide range of water temperatures. Only one fertilized female is needed to start a new population, as they ca ...
... Rusty Crayfish are being spread in North America in bait buckets by fisherman. Once introduced, they can spread quickly into new habitats as they are opportunistic feeders, and resistant to a wide range of water temperatures. Only one fertilized female is needed to start a new population, as they ca ...
3. Existing Authorities and Programs
... submarines, and ???. These vessels may serve as a source of introductions through hull fouling. These ships are subject to ballast water exchange regulations, which become mandatory in 2005 (cite USCG ----). (NOTE: need to get more info on this commercial traffic – could be an action item, if we can ...
... submarines, and ???. These vessels may serve as a source of introductions through hull fouling. These ships are subject to ballast water exchange regulations, which become mandatory in 2005 (cite USCG ----). (NOTE: need to get more info on this commercial traffic – could be an action item, if we can ...
Population, community and ecosystem effects of
... ecosystem consequences of introduction, such as net primary productivity or nutrient cycling in soils. The anecdotal evidence from Stritar et al. (in press) suggests that exotic herbivores may have very different effects on local plant communities and subsequent soil processes than native herbivores ...
... ecosystem consequences of introduction, such as net primary productivity or nutrient cycling in soils. The anecdotal evidence from Stritar et al. (in press) suggests that exotic herbivores may have very different effects on local plant communities and subsequent soil processes than native herbivores ...
global efforts to limit Australian acacia invasions
... were true, and managers needed to concentrate only on existing known invaders, Australian acacia invasions are still likely to increase in global extent over the next few decades (Richardson et al., 2011). Within invaded ranges, species are spreading further; some species that are known to be widesp ...
... were true, and managers needed to concentrate only on existing known invaders, Australian acacia invasions are still likely to increase in global extent over the next few decades (Richardson et al., 2011). Within invaded ranges, species are spreading further; some species that are known to be widesp ...
Population, community and ecosystem effects of exotic herbivores: A
... ecosystem consequences of introduction, such as net primary productivity or nutrient cycling in soils. The anecdotal evidence from Stritar et al. (in press) suggests that exotic herbivores may have very different effects on local plant communities and subsequent soil processes than native herbivores ...
... ecosystem consequences of introduction, such as net primary productivity or nutrient cycling in soils. The anecdotal evidence from Stritar et al. (in press) suggests that exotic herbivores may have very different effects on local plant communities and subsequent soil processes than native herbivores ...
Can the invasive European rabbit (Oryctolagus
... engineers that increase ecosystem complexity are predicted to increase ecosystem-wide species density and richness, while those that reduce complexity are predicted to cause declines in species density and richness (Crooks 2002). Engineering effects on patchscale species richness also appear related ...
... engineers that increase ecosystem complexity are predicted to increase ecosystem-wide species density and richness, while those that reduce complexity are predicted to cause declines in species density and richness (Crooks 2002). Engineering effects on patchscale species richness also appear related ...
Biotic interactions and plant invasions
... questions, both comparisons shed light on important aspects of biological invasions. Comparison with conspecifics in their native range is useful because it is relative to these populations that invaders gain and lose interactions with enemies, mutualists and competitors. Also, the ecological and ev ...
... questions, both comparisons shed light on important aspects of biological invasions. Comparison with conspecifics in their native range is useful because it is relative to these populations that invaders gain and lose interactions with enemies, mutualists and competitors. Also, the ecological and ev ...
Ecosystem resistance to invasion and the role of
... including, [a] preemption or priority effects whereby established native species keep out potential invaders and [b] competition among seedlings or regenerating individuals of native and exotic species after disturbance. In this latter case, it is the relative ability of native versus exotic species ...
... including, [a] preemption or priority effects whereby established native species keep out potential invaders and [b] competition among seedlings or regenerating individuals of native and exotic species after disturbance. In this latter case, it is the relative ability of native versus exotic species ...
Genes to ecosystems: exploring the frontiers of
... Postulate 4 requires that a causal relationship be demonstrated, such that, when the gene(s) of interest or its expression is manipulated, predictable effects will be observed. Knock-ins, knock-outs, and up- and downregulation are molecular methods that are becoming increasingly feasible. Geneticall ...
... Postulate 4 requires that a causal relationship be demonstrated, such that, when the gene(s) of interest or its expression is manipulated, predictable effects will be observed. Knock-ins, knock-outs, and up- and downregulation are molecular methods that are becoming increasingly feasible. Geneticall ...
Experimental evidence for indirect facilitation among invasive plants
... added Alliaria seed into both Microstegium-invaded and control plots under three disturbance regimes (Fig. 1). We established three sets of three subplots, separated by 0.5–1 m, at the northwest, southwest and southeast corner of each plot (nine total subplots per plot). Plot was the level of replic ...
... added Alliaria seed into both Microstegium-invaded and control plots under three disturbance regimes (Fig. 1). We established three sets of three subplots, separated by 0.5–1 m, at the northwest, southwest and southeast corner of each plot (nine total subplots per plot). Plot was the level of replic ...
Information Document
... There are many examples of successful eradication and control programmes of invasive alien species on islands, and greater awareness of the problem is increasing the capacity of countries to prevent their movement and introduction. Furthermore, the relatively small size and contained nature of islan ...
... There are many examples of successful eradication and control programmes of invasive alien species on islands, and greater awareness of the problem is increasing the capacity of countries to prevent their movement and introduction. Furthermore, the relatively small size and contained nature of islan ...
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).