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Invasion processes and causes of success.
... of ant communities, may highlight intrinsic differences between communities that have formed in separate biogeographic regions, and may suggest possible methods of control. Understanding ant invasion processes and causes of success thus has both basic and applied relevance. Human activities have int ...
... of ant communities, may highlight intrinsic differences between communities that have formed in separate biogeographic regions, and may suggest possible methods of control. Understanding ant invasion processes and causes of success thus has both basic and applied relevance. Human activities have int ...
Grovetown Lagoon kit
... edges of the lagoon, extending out to the road and river in some places. Primary succession may take place naturally, but in areas where there is competition for resources due to the presence of weeds, it is helpful for us to intervene to speed up the process. The planting areas are either grass/pas ...
... edges of the lagoon, extending out to the road and river in some places. Primary succession may take place naturally, but in areas where there is competition for resources due to the presence of weeds, it is helpful for us to intervene to speed up the process. The planting areas are either grass/pas ...
Historical land use and environmental determinants
... and Garcia-Berthou, 2005; Simberloff, 2005). However, the factors that govern susceptibility of natural habitats to biological invasion remain unresolved. The intrinsic susceptibility of habitats to invasion apparently results from interactions among the abiotic conditions of the recipient ecosystem ...
... and Garcia-Berthou, 2005; Simberloff, 2005). However, the factors that govern susceptibility of natural habitats to biological invasion remain unresolved. The intrinsic susceptibility of habitats to invasion apparently results from interactions among the abiotic conditions of the recipient ecosystem ...
Biotic interactions among estuarine infaunal
... than 1 particular type of interspecific interaction operated during the study, the results indicate that the species could be divided into 2 groups, the polychaete and non-polychaete fauna. A predominance of inhibitory interactions (recolonization densities were significantly lower in cores with est ...
... than 1 particular type of interspecific interaction operated during the study, the results indicate that the species could be divided into 2 groups, the polychaete and non-polychaete fauna. A predominance of inhibitory interactions (recolonization densities were significantly lower in cores with est ...
study regarding the olt river (romania)
... (Topuzović and Pavlović 2004), the biota of the ecosystem include a diverse zooplankton community composed of 99 species (Ostojić 2000) and a macrozoobenthos community comprising 32 species being dominated by Oligochaeta and Chironomidae (Simić 2005). The lake is marked by an occasional oxygen defic ...
... (Topuzović and Pavlović 2004), the biota of the ecosystem include a diverse zooplankton community composed of 99 species (Ostojić 2000) and a macrozoobenthos community comprising 32 species being dominated by Oligochaeta and Chironomidae (Simić 2005). The lake is marked by an occasional oxygen defic ...
preliminary proofs — not for distribution - Forest Dynamics Lab
... The Coastal Plain is a region of low relief in the southeastern United States along the Atlantic and Gulf Coasts that extends southward into Mexico and includes the lower Mississippi River alluvial valley (Figure ). The submerged portion of this plain extends under shallow water until it reaches th ...
... The Coastal Plain is a region of low relief in the southeastern United States along the Atlantic and Gulf Coasts that extends southward into Mexico and includes the lower Mississippi River alluvial valley (Figure ). The submerged portion of this plain extends under shallow water until it reaches th ...
the usefulness of ecological niche concepts in understanding plant
... phenomena in plant communities is to elaborate a new dimension to the niche shape of plant. Grubb (1977) proposed some other components of plant niche, including habitat niche, life form niche, phenological niche, and regeneration niche. The habitat niche describes chemical and physical limit tolera ...
... phenomena in plant communities is to elaborate a new dimension to the niche shape of plant. Grubb (1977) proposed some other components of plant niche, including habitat niche, life form niche, phenological niche, and regeneration niche. The habitat niche describes chemical and physical limit tolera ...
feral pig control project
... fungus phytophthora cinnamomi which causes die-back disease in vegetation. ...
... fungus phytophthora cinnamomi which causes die-back disease in vegetation. ...
Common Questions, Helpful Answers
... This section provides answers to some commonly asked questions that target audiences are likely to ask. You can use the answers to help develop communications materials that will offer audiences all the information they need to help improve their awareness and understanding of biodiversity. What is ...
... This section provides answers to some commonly asked questions that target audiences are likely to ask. You can use the answers to help develop communications materials that will offer audiences all the information they need to help improve their awareness and understanding of biodiversity. What is ...
assessment
... (2009), using modern, historical and subfossil records, found that Woylies (excluding B. tropica) are known to have occurred in 28 of Australia’s 85 bioregions and that they are now extinct in all but two. By 1970, they remained only in four subpopulations in south-western Australia: Dryandra, Tutan ...
... (2009), using modern, historical and subfossil records, found that Woylies (excluding B. tropica) are known to have occurred in 28 of Australia’s 85 bioregions and that they are now extinct in all but two. By 1970, they remained only in four subpopulations in south-western Australia: Dryandra, Tutan ...
Definitions
... relative frequency. For biological diversity these items are organized at many levels …. Thus the term biodiversity encompasses different ecosystems, species, genes and their relative abundance. (US Congress, Office of Technology Assessment, 1987). ...
... relative frequency. For biological diversity these items are organized at many levels …. Thus the term biodiversity encompasses different ecosystems, species, genes and their relative abundance. (US Congress, Office of Technology Assessment, 1987). ...
impacts of invasive stream salmonids on native fish: using meta
... for the native species, the value of a response variable was lower in sympatric than allopatric situations, indicating a negative impact of the alien species on the native one. However, as there was generally no means of deciding a priori whether a certain habitat shift was harmful to a native speci ...
... for the native species, the value of a response variable was lower in sympatric than allopatric situations, indicating a negative impact of the alien species on the native one. However, as there was generally no means of deciding a priori whether a certain habitat shift was harmful to a native speci ...
Endemism in hostparasite interactions among island populations of
... interactions are the most ubiquitous species interactions in nature (Poulin & Morand, 2005). Parasites account for most species on Earth (May, 1988), can exert strong selection pressures on their hosts (e.g. Wegner et al., 2003) and can vary in their diversity independent of the number of available ...
... interactions are the most ubiquitous species interactions in nature (Poulin & Morand, 2005). Parasites account for most species on Earth (May, 1988), can exert strong selection pressures on their hosts (e.g. Wegner et al., 2003) and can vary in their diversity independent of the number of available ...
Ant community structure on a small Pacific island: only one native
... with ants of many species, but most of them have evidently been introduced by humans (Wilson and Taylor 1967a; Lester et al. 2009; Rizali et al. 2010) and are tramp species according to Passera’s (1994) criterion: i.e., they are invasive species with a worldwide distribution, small worker size, poly ...
... with ants of many species, but most of them have evidently been introduced by humans (Wilson and Taylor 1967a; Lester et al. 2009; Rizali et al. 2010) and are tramp species according to Passera’s (1994) criterion: i.e., they are invasive species with a worldwide distribution, small worker size, poly ...
Fluctuating resources in plant communities: a general theory of invasibility FORUM
... susceptible to invasion whenever there is an increase in the amount of unused resources. Our theory rests on the simple assumption that an invading species must have access to available resources, e.g. light, nutrients, and water, and that a species will enjoy greater success in invading a community ...
... susceptible to invasion whenever there is an increase in the amount of unused resources. Our theory rests on the simple assumption that an invading species must have access to available resources, e.g. light, nutrients, and water, and that a species will enjoy greater success in invading a community ...
Local diversity of arable weeds increases with landscape
... many species of phytophagous and entomophagous insects and spiders (Mahn, 1992; Rypstra et al., 1999; Haughton et al., 2001), are pollen and nectar resources for pollinating insects, and enhance biological control (Heitzmann et al., 1992; Nentwig, 1994). They possess a number of specific life-history ...
... many species of phytophagous and entomophagous insects and spiders (Mahn, 1992; Rypstra et al., 1999; Haughton et al., 2001), are pollen and nectar resources for pollinating insects, and enhance biological control (Heitzmann et al., 1992; Nentwig, 1994). They possess a number of specific life-history ...
Intercontinental Comparison of Fish Life History Strategies along a
... Abstract.—The flow regime is considered the primary driver of physical processes in riverine ecosystems; thus we expect that the trait composition of fish assemblages might respond similarly to hydrologic variability, even at broad spatial scales. Here, we test the hypothesis that freshwater fish li ...
... Abstract.—The flow regime is considered the primary driver of physical processes in riverine ecosystems; thus we expect that the trait composition of fish assemblages might respond similarly to hydrologic variability, even at broad spatial scales. Here, we test the hypothesis that freshwater fish li ...
Conceptual problems and scale limitations of defining ecological
... trees), restricting life forms would be necessary for a practical, although functionally arbitrary, application of CI. As more criteria become added, the taxonomic restriction becomes similar to other terms referring to subsets of the community such as guilds or functional groups. In the context of ...
... trees), restricting life forms would be necessary for a practical, although functionally arbitrary, application of CI. As more criteria become added, the taxonomic restriction becomes similar to other terms referring to subsets of the community such as guilds or functional groups. In the context of ...
DODSON, STANLEY Predicting crustacean zooplankton species
... rate of increase in additional habitat with increasing area. The ecology of crustacean zooplankton includes all three phenomena. Immigration rates are assumed to be high for most speciesof crustacean zooplankton. Fryer (1985) reported that data on colonization of newly formed ponds indicate high imm ...
... rate of increase in additional habitat with increasing area. The ecology of crustacean zooplankton includes all three phenomena. Immigration rates are assumed to be high for most speciesof crustacean zooplankton. Fryer (1985) reported that data on colonization of newly formed ponds indicate high imm ...
1 - Biology Department | UNC Chapel Hill
... Spatial Mass Effect (vicinism) ............................................................................................................ 28 Conclusion .......................................................................................................................................... 28 Were ...
... Spatial Mass Effect (vicinism) ............................................................................................................ 28 Conclusion .......................................................................................................................................... 28 Were ...
Generalist Predators (Coleoptera: Carabidae, Staphylinidae
... millipedes; beetles found in these traps were ignored because beetles often escaped during bait collection. Pitfall traps were placed to capture both millipedes and beetles. Additional pitfall traps were placed in the edge habitat of each Þeld but were used only to enhance the assemblage description ...
... millipedes; beetles found in these traps were ignored because beetles often escaped during bait collection. Pitfall traps were placed to capture both millipedes and beetles. Additional pitfall traps were placed in the edge habitat of each Þeld but were used only to enhance the assemblage description ...
Mesoamerican Reef
... It has become a serious threat to marine ecosystems It has no natural predators and is beginning to reduce biodiversity (GlobalGiving, 2011) Over population is depleting prey for other species sharing the same ecological niche These species risk extinction and vulnerability without food, causing imb ...
... It has become a serious threat to marine ecosystems It has no natural predators and is beginning to reduce biodiversity (GlobalGiving, 2011) Over population is depleting prey for other species sharing the same ecological niche These species risk extinction and vulnerability without food, causing imb ...
BIOL 112 SM 2014 FNX Q 140724.1
... 23. Which of the following represents an idea associated with environmental sustainability? a) The capacity of the environment to absorb toxins is unlimited. b) The human population continues to grow. c) We are using fossil fuels as if they were present in unlimited supply. d) The Earth's resources ...
... 23. Which of the following represents an idea associated with environmental sustainability? a) The capacity of the environment to absorb toxins is unlimited. b) The human population continues to grow. c) We are using fossil fuels as if they were present in unlimited supply. d) The Earth's resources ...
1 - Napa Valley College
... 23. Which of the following represents an idea associated with environmental sustainability? a) The capacity of the environment to absorb toxins is unlimited. b) The human population continues to grow. c) We are using fossil fuels as if they were present in unlimited supply. d) The Earth's resources ...
... 23. Which of the following represents an idea associated with environmental sustainability? a) The capacity of the environment to absorb toxins is unlimited. b) The human population continues to grow. c) We are using fossil fuels as if they were present in unlimited supply. d) The Earth's resources ...
Introduced species
![](https://commons.wikimedia.org/wiki/Special:FilePath/Melilotus_alba_bgiu.jpg?width=300)
An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are called invasive species. Some have a negative effect on a local ecosystem. Some introduced species may have no negative effect or only minor impact. Some species have been introduced intentionally to combat pests. They are called biocontrols and may be regarded as beneficial as an alternative to pesticides in agriculture for example. In some instances the potential for being beneficial or detrimental in the long run remains unknown. A list of some introduced species is given in a separate article.The effects of introduced species on natural environments have gained much scrutiny from scientists, governments, farmers and others.