Effects of alien species on plant-pollinator interactions: how can
... no effect on native plant seed set (e.g. Dupont et al. 2004; Lach 2007), and sometimes even positive influences have been documented (Chamberlain and Schlising 2008), ...
... no effect on native plant seed set (e.g. Dupont et al. 2004; Lach 2007), and sometimes even positive influences have been documented (Chamberlain and Schlising 2008), ...
First data on the spiders (Aranei) from the northern Gydan Peninsula
... Pickard-Cambridge, 1875) and Tenuiphantes nigriventris (L. Koch, 1879) [Eskov, 1987, 1988; Poryadina, 1998]. The Nikandrovskiye Islands are situated in the delta of Yenisei River, also beyond the peninsula. Two species had been recorded from there: Bathyphantes humilis (L. Koch, 1879) and Leptorhopt ...
... Pickard-Cambridge, 1875) and Tenuiphantes nigriventris (L. Koch, 1879) [Eskov, 1987, 1988; Poryadina, 1998]. The Nikandrovskiye Islands are situated in the delta of Yenisei River, also beyond the peninsula. Two species had been recorded from there: Bathyphantes humilis (L. Koch, 1879) and Leptorhopt ...
Diversity in Tropical Rain Forests and Coral Reefs Joseph H
... cases, trees and corals. Whether my arguments apply to the mobile species, such as insects. birds. fish, and crabs, that use these structures as shelter or food. or to nontropical regions. remains to be seen. I deal only with variations in diversity within local areas, not with large-scale geographi ...
... cases, trees and corals. Whether my arguments apply to the mobile species, such as insects. birds. fish, and crabs, that use these structures as shelter or food. or to nontropical regions. remains to be seen. I deal only with variations in diversity within local areas, not with large-scale geographi ...
Wanger TC, Wielgoss AC, Motzke I, Clough Y, Brook BW, Sodhi NS
... endemic toad (I. celebensis), as a predator, negatively affects the noxious invasive ant A. gracilipes, and this, in turn, mitigates the impact of A. gracilipes on natural ant diversity. Thus, in contrast to an enemy-release effect, this is an invasive-naivety effect: the alien prey species may not ...
... endemic toad (I. celebensis), as a predator, negatively affects the noxious invasive ant A. gracilipes, and this, in turn, mitigates the impact of A. gracilipes on natural ant diversity. Thus, in contrast to an enemy-release effect, this is an invasive-naivety effect: the alien prey species may not ...
McPeek, M. A. 1996. Tradeoffs, food web structure
... McPeek 1994). Trade-offs operating at the between-community scale can therefore have profound effects on species distributions in the environment, because particular species are successful under one set of ecological conditions but are unable to maintain populations under others. Paradoxically, trad ...
... McPeek 1994). Trade-offs operating at the between-community scale can therefore have profound effects on species distributions in the environment, because particular species are successful under one set of ecological conditions but are unable to maintain populations under others. Paradoxically, trad ...
Effects of population-level aggregation
... allowed that model to include intra-annual aggregation, and finally we added the effects of ...
... allowed that model to include intra-annual aggregation, and finally we added the effects of ...
BSF 101//3 - Biodiversity in the Tropics
... Describe the ways in which amphibians are adapted to life on land . In what ways are amphibians still restricted to a watery or moist environment? (10 marks) ...
... Describe the ways in which amphibians are adapted to life on land . In what ways are amphibians still restricted to a watery or moist environment? (10 marks) ...
arXiv:q-bio/0607016v1 [q
... remarkable; this is referred to as ‘the paradox of the plankton’ (Hutchinson, 1961). To explain this paradox, several attempts have been made. Hutchinson (1961) proposed that because of weather-driven fluctuations, plankton communities are not in equilibrium. Authors such as Richerson et al. (1970) ...
... remarkable; this is referred to as ‘the paradox of the plankton’ (Hutchinson, 1961). To explain this paradox, several attempts have been made. Hutchinson (1961) proposed that because of weather-driven fluctuations, plankton communities are not in equilibrium. Authors such as Richerson et al. (1970) ...
Effects of predation and variation in species relative
... erally either examine static patterns of species relative abundance in one or more natural communities (Hubbell and Foster 1986, Condit et al. 2000, 2002, Clark and McLachlan 2003, McGill 2003), or use models to investigate the relationship between species patterns and community dynamics (Bell 2000, ...
... erally either examine static patterns of species relative abundance in one or more natural communities (Hubbell and Foster 1986, Condit et al. 2000, 2002, Clark and McLachlan 2003, McGill 2003), or use models to investigate the relationship between species patterns and community dynamics (Bell 2000, ...
Native Plants As Habitat For Wildlife
... The Convention on Biological Diversity, June 1992 defines biodiversity as: “The variability among living organisms from all sources, including among others, terrestrial, marine, and other aquatic ecosystems and the ecological complexes of which they are a part; this includes diversity within species ...
... The Convention on Biological Diversity, June 1992 defines biodiversity as: “The variability among living organisms from all sources, including among others, terrestrial, marine, and other aquatic ecosystems and the ecological complexes of which they are a part; this includes diversity within species ...
empirical rules and assembly theory
... flow regimes of the river and its tributaries are largely unmodified, the drainage has been altered by human activity. There is a dam and reservoir in the headwaters of the main stem of the river (Pillsbury Reservoir). Much of the drainage has been heavily logged, resulting in large-scale erosion of ...
... flow regimes of the river and its tributaries are largely unmodified, the drainage has been altered by human activity. There is a dam and reservoir in the headwaters of the main stem of the river (Pillsbury Reservoir). Much of the drainage has been heavily logged, resulting in large-scale erosion of ...
Ecological succession - Northwest ISD Moodle
... Like the events that cause primary succession, the events that cause secondary succession typically reduce populations dramatically. However, these events rarely kill off entire populations. Limiting factors may be eliminated, allowing some populations to increase. After a forest fire, for example, ...
... Like the events that cause primary succession, the events that cause secondary succession typically reduce populations dramatically. However, these events rarely kill off entire populations. Limiting factors may be eliminated, allowing some populations to increase. After a forest fire, for example, ...
Plant communities in harsh sites are less invaded: a summary of
... species capable of establishing, spreading, and causing ecological and/or economic damage, and the term ‘non-natives’ to simply indicate species outside of their native range. Although we focus on invasive species, we sometimes include examples of nonnatives that are not reported to be problematic b ...
... species capable of establishing, spreading, and causing ecological and/or economic damage, and the term ‘non-natives’ to simply indicate species outside of their native range. Although we focus on invasive species, we sometimes include examples of nonnatives that are not reported to be problematic b ...
Assessing the likely effectiveness of multispecies overlap analysis
... habitat availability and use. We calculated a niche overlap value for each reference that reported data for at least 2 species, rather than compiling all selectivity data into a single analysis because different papers often used different techniques for assessing habitat availability and use. Data ...
... habitat availability and use. We calculated a niche overlap value for each reference that reported data for at least 2 species, rather than compiling all selectivity data into a single analysis because different papers often used different techniques for assessing habitat availability and use. Data ...
OS - BioMed Central
... include species such as Cavendishia nobilis (Ericaceae) or Justicia kuntzei (Acanthaceae), among others, in our study. We also eliminated species for which the taxonomic status is unclear such that the known localities may refer to more than one biological species (e.g., the mouse opossum Marmosa qu ...
... include species such as Cavendishia nobilis (Ericaceae) or Justicia kuntzei (Acanthaceae), among others, in our study. We also eliminated species for which the taxonomic status is unclear such that the known localities may refer to more than one biological species (e.g., the mouse opossum Marmosa qu ...
Advice to the Minister for Sustainability, Environment, Water
... One introduced fish species, carp, accounts for 58% of the total fish biomass across the MurrayDarling Basin, and in some rivers more than 90% of the total fish biomass (Native Fish Strategy for the Murray-Darling Basin, 2003; Davies et al., 2008). Carp are known to destroy aquatic vegetation throug ...
... One introduced fish species, carp, accounts for 58% of the total fish biomass across the MurrayDarling Basin, and in some rivers more than 90% of the total fish biomass (Native Fish Strategy for the Murray-Darling Basin, 2003; Davies et al., 2008). Carp are known to destroy aquatic vegetation throug ...
Endemic predators, invasive prey and native diversity
... preference of many toads, there may be a general potential for bufonids as biocontrol agents; this is an area in need of further research. Intuitively, toads can only provide useful ecosystem services if they are abundant; yet (endemic) amphibians are the most threatened vertebrates on the planet [2 ...
... preference of many toads, there may be a general potential for bufonids as biocontrol agents; this is an area in need of further research. Intuitively, toads can only provide useful ecosystem services if they are abundant; yet (endemic) amphibians are the most threatened vertebrates on the planet [2 ...
Sustaining the Saco
... system described by predators and their prey. Primary producers (i.e., plants) capture energy from the sun, and then the energy is transferred to animals through herbivory and predation. Beyond simply mapping predator-prey relationships, a food web characterizes the relative importance of each prey ...
... system described by predators and their prey. Primary producers (i.e., plants) capture energy from the sun, and then the energy is transferred to animals through herbivory and predation. Beyond simply mapping predator-prey relationships, a food web characterizes the relative importance of each prey ...
Predicting distributions of species richness and species size in
... also be expected to decrease with increasing spatial commonness of the habitat type. Accordingly, the species pool size, defined by the opportunity for net species accumulation (speciation minus extinction) should also have a corresponding right-skewed distribution on both habitat gradients (Fig. 1c ...
... also be expected to decrease with increasing spatial commonness of the habitat type. Accordingly, the species pool size, defined by the opportunity for net species accumulation (speciation minus extinction) should also have a corresponding right-skewed distribution on both habitat gradients (Fig. 1c ...
Sociometric analysis of the role of penaeids in the continental shelf
... nursery habitat as post-larvae and juveniles, their importance to fisheries occurs once they return to the open ocean as adults. However, little is known regarding the ecological role of shrimp on the open ocean food web. This is an important aspect considering the decline that the shrimp population ...
... nursery habitat as post-larvae and juveniles, their importance to fisheries occurs once they return to the open ocean as adults. However, little is known regarding the ecological role of shrimp on the open ocean food web. This is an important aspect considering the decline that the shrimp population ...
Determinants of Distribu_on
... nature, including bio/c factors (compe//on, preda/on, mutualism, etc). Balanus: realized niche ~ fundamental niche Chthamalus: constrained by compe//ve interac/ons to narrower realized niche ...
... nature, including bio/c factors (compe//on, preda/on, mutualism, etc). Balanus: realized niche ~ fundamental niche Chthamalus: constrained by compe//ve interac/ons to narrower realized niche ...
Why Care About America`s Sagebrush?
... for energy resources means continuous development of the sage-steppe ecosystem, which results in habitat fragmentation. Fragmentation of habitat is causing significant reductions of wildlife populations, such as Greater sage-grouse and pronghorn and other sagebrush-dependent species. Although data a ...
... for energy resources means continuous development of the sage-steppe ecosystem, which results in habitat fragmentation. Fragmentation of habitat is causing significant reductions of wildlife populations, such as Greater sage-grouse and pronghorn and other sagebrush-dependent species. Although data a ...
Introduced species
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.