Invasive Species - Parliament of Australia
... directly abuts another sovereign nation. It also has some of the busiest ports and airports for foreign shipping and travellers and is a major port of call for foreign tourist yachts. The population is only 3.4 million people but has increased 27% in the last 10 years. The state has 13 terrestrial b ...
... directly abuts another sovereign nation. It also has some of the busiest ports and airports for foreign shipping and travellers and is a major port of call for foreign tourist yachts. The population is only 3.4 million people but has increased 27% in the last 10 years. The state has 13 terrestrial b ...
Patterns of among- and within-species variation in
... evaluate their relative importance in determining patterns of HP receipt across species (see Fang and Huang, 2013). Furthermore, for species visited by generalist pollinators, the floral neighborhood can also be important in influencing patterns of HP receipt (Rathcke, 1983; Feinsinger et al., 1986) ...
... evaluate their relative importance in determining patterns of HP receipt across species (see Fang and Huang, 2013). Furthermore, for species visited by generalist pollinators, the floral neighborhood can also be important in influencing patterns of HP receipt (Rathcke, 1983; Feinsinger et al., 1986) ...
Utah Envirothon Study Guide
... to produce food supplies; and (for some) as shelter. Some animals need water daily; others much less often. Sources of water are surface water, dew, snow and succulent (juicy) vegetation. Some animals can also use metabolic water (water produced by chemical processes in the body). In the dry climate ...
... to produce food supplies; and (for some) as shelter. Some animals need water daily; others much less often. Sources of water are surface water, dew, snow and succulent (juicy) vegetation. Some animals can also use metabolic water (water produced by chemical processes in the body). In the dry climate ...
Lepidopteran Communities in Two Forest Ecosystems During the
... data). By 1996, gypsy moth populations in northern Michigan had largely collapsed and defoliation was not observed in the Huron-Manistee National Forest. We estimated the size of gypsy moth populations each year using mean egg mass counts from four to Þve 0.01-ha plots randomly located in each stand ...
... data). By 1996, gypsy moth populations in northern Michigan had largely collapsed and defoliation was not observed in the Huron-Manistee National Forest. We estimated the size of gypsy moth populations each year using mean egg mass counts from four to Þve 0.01-ha plots randomly located in each stand ...
Pine Rockland Species - Miami Pine Rocklands Coalition
... • B. Energy and nutrients move within and between biotic and abiotic components of ecosystems via physical, chemical and biological processes. • C. Human activities and natural events can have profound effects on populations, biodiversity and ecosystem processes. • Content Complexity Rating: Level 2 ...
... • B. Energy and nutrients move within and between biotic and abiotic components of ecosystems via physical, chemical and biological processes. • C. Human activities and natural events can have profound effects on populations, biodiversity and ecosystem processes. • Content Complexity Rating: Level 2 ...
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... the regulation of the biosphere in many ways that are beneficial to humans via the so-called ecosystem services [6,7]. Examples include the provision of clean air and water, and regulation of the climate. Somewhat contentiously, ecosystems have therefore been assigned monetary value [8]. However, ec ...
... the regulation of the biosphere in many ways that are beneficial to humans via the so-called ecosystem services [6,7]. Examples include the provision of clean air and water, and regulation of the climate. Somewhat contentiously, ecosystems have therefore been assigned monetary value [8]. However, ec ...
Sapo gigante (Rhinella marina)
... become established on this occasion and in two subsequent attempts as well (Krakauer 1968).Marine toads finally did become established in Florida after an accidental release by an importer in 1955 from the Miami Airport (Krakauer 1968, Ashton and Ashton 1988). Additional intentional releases into so ...
... become established on this occasion and in two subsequent attempts as well (Krakauer 1968).Marine toads finally did become established in Florida after an accidental release by an importer in 1955 from the Miami Airport (Krakauer 1968, Ashton and Ashton 1988). Additional intentional releases into so ...
Bergmann`s rule and the mammal fauna of northern North America
... (typically latitudinal) midpoint of a species’ geographic range. We term this the midpoint approach (cf. Rohde et al. 1993). Such comparisons can be made either by plotting midpoint against body size across species (ideally accounting for phylogenetic non-independence) (Hawkins 1995, Hawkins and Law ...
... (typically latitudinal) midpoint of a species’ geographic range. We term this the midpoint approach (cf. Rohde et al. 1993). Such comparisons can be made either by plotting midpoint against body size across species (ideally accounting for phylogenetic non-independence) (Hawkins 1995, Hawkins and Law ...
Syllabus: Principles of Forest Management
... time to review and return assignments before others are due. As such, deadlines are firm and extensions will only be considered under extenuating circumstances. If you believe that you have been prevented from completing your work on time for reasons beyond your control (e.g. illness), make sure tha ...
... time to review and return assignments before others are due. As such, deadlines are firm and extensions will only be considered under extenuating circumstances. If you believe that you have been prevented from completing your work on time for reasons beyond your control (e.g. illness), make sure tha ...
Food web structure of three guilds of natural enemies: predators
... Quantitative food webs were constructed to describe the interactions between aphids and their primary parasitoids in 3 years (Fig. 1), aphids and entomopathogenic fungi in 2 years (Fig. 2) and aphids and the guild of predators specialized on this food resource in 1 year (Fig. 3). In drawing the webs ...
... Quantitative food webs were constructed to describe the interactions between aphids and their primary parasitoids in 3 years (Fig. 1), aphids and entomopathogenic fungi in 2 years (Fig. 2) and aphids and the guild of predators specialized on this food resource in 1 year (Fig. 3). In drawing the webs ...
Rapid diversity and abundance decline in a Caribbean coral reef
... sponges quickly fall apart after dying, leaving no trace. High diversity of sponge assemblages renders loss of any particular species less perceptible, and difficult to document with the random transect data utilized in many monitoring programs. With the sole exception of 12 photo quadrats (each 1 m ...
... sponges quickly fall apart after dying, leaving no trace. High diversity of sponge assemblages renders loss of any particular species less perceptible, and difficult to document with the random transect data utilized in many monitoring programs. With the sole exception of 12 photo quadrats (each 1 m ...
A perspective on amphibian conservation in the United States
... with birds and mammals, having few keystone or umbrella species, the lack of broadscale, long-term commitment from resource agencies, and, probably, politics at all levels. Fundamentally, it is essential to realize that in a free market society, amphibians are not deemed vital simply because they ca ...
... with birds and mammals, having few keystone or umbrella species, the lack of broadscale, long-term commitment from resource agencies, and, probably, politics at all levels. Fundamentally, it is essential to realize that in a free market society, amphibians are not deemed vital simply because they ca ...
Plant Community Analysis and Dating of the Asulkan
... width of the lichen thallus (Luckman, 1977). The most commonly used species to date substrate is Rizocarpon geographicum because it grows slowly, relatively radially, and has a long life span (Luckman, 1977). Using these methods, a timeline for succession can be developed and compared to plant commu ...
... width of the lichen thallus (Luckman, 1977). The most commonly used species to date substrate is Rizocarpon geographicum because it grows slowly, relatively radially, and has a long life span (Luckman, 1977). Using these methods, a timeline for succession can be developed and compared to plant commu ...
Full text in pdf format
... Among the gelatinous species, carbon and nitrogen values were highest for Colobonema sericeum and Agmayeria tortugensis and lowest for Bathocyroe fosten and Poralia rufescens (Table 3). The elemental compositions of Sergestes arcticus and Serrivomer beanii were substantially greater than those of th ...
... Among the gelatinous species, carbon and nitrogen values were highest for Colobonema sericeum and Agmayeria tortugensis and lowest for Bathocyroe fosten and Poralia rufescens (Table 3). The elemental compositions of Sergestes arcticus and Serrivomer beanii were substantially greater than those of th ...
2001cjb
... scarce even if they do (Williamson 1996; Williamson and Fitter 1996a, 1996b; Mack et al. 2000). Many researchers have attempted to develop rules to identify the minority of species which become successful invaders (e.g., Elton 1958; ...
... scarce even if they do (Williamson 1996; Williamson and Fitter 1996a, 1996b; Mack et al. 2000). Many researchers have attempted to develop rules to identify the minority of species which become successful invaders (e.g., Elton 1958; ...
Investigations of species richness effects on ecosystem functioning
... among stream-living macroinvertebrates. Global biodiversity is decreasing rapidly and it is poorly known what the consequences of this loss may be for ecosystems and the services they provide. Hence, it is important to investigate the potential effects of losing species. In streams, deforestation, i ...
... among stream-living macroinvertebrates. Global biodiversity is decreasing rapidly and it is poorly known what the consequences of this loss may be for ecosystems and the services they provide. Hence, it is important to investigate the potential effects of losing species. In streams, deforestation, i ...
Temporal variability of forest communities: empirical estimates of
... poorly understood. One scenario is that a combination of environmental variance and weak niche stabilisation leads to storage effects (Chesson 2000) or temporal niches, whereby a rare species can benefit from favourable environmental conditions by expanding to fill its niche, but a common species ca ...
... poorly understood. One scenario is that a combination of environmental variance and weak niche stabilisation leads to storage effects (Chesson 2000) or temporal niches, whereby a rare species can benefit from favourable environmental conditions by expanding to fill its niche, but a common species ca ...
Urban biodiversity: patterns and mechanisms
... in bird abundance are often due to increases in nonnative species such as English sparrows and European starlings in North American studies and a subset of native species that are urban adapters and exploiters.3,12,13 In addition, subsets of bird species tend to increase (e.g., granivores) whereas o ...
... in bird abundance are often due to increases in nonnative species such as English sparrows and European starlings in North American studies and a subset of native species that are urban adapters and exploiters.3,12,13 In addition, subsets of bird species tend to increase (e.g., granivores) whereas o ...
landbird conservation plan - Charles Darwin Foundation
... These declines have been most pronounced in humid forest and agricultural zones at higher elevations (Dvorak et al., 2012). On Floreana, studies showing a serious decline in the Medium Tree Finch (Camarhynchus pauper) have lead to an upgrade of this species to “Critically Endangered”, under the IUCN ...
... These declines have been most pronounced in humid forest and agricultural zones at higher elevations (Dvorak et al., 2012). On Floreana, studies showing a serious decline in the Medium Tree Finch (Camarhynchus pauper) have lead to an upgrade of this species to “Critically Endangered”, under the IUCN ...
Plant species traits are the predominant control on litter
... then have a strong effect on the abundance and activity of decomposers leading to different rates of decomposition (Melillo et al. 1982; Taylor et al. 1989). We therefore hypothesized (i) that variation in leaf litter decomposition rates within climate regions worldwide would be a function of the tr ...
... then have a strong effect on the abundance and activity of decomposers leading to different rates of decomposition (Melillo et al. 1982; Taylor et al. 1989). We therefore hypothesized (i) that variation in leaf litter decomposition rates within climate regions worldwide would be a function of the tr ...
The Global, Phenomena Complex - Woods Hole Oceanographic
... by HAB toxins. Some HABs, while not directly toxic, have physical structures, such as spines, that can lodge in gills, and can cause irritation and eventual suffocation. The other fundamental way in which HABs are harmful is through high biomass accumulation, which may lead to environmental damage, ...
... by HAB toxins. Some HABs, while not directly toxic, have physical structures, such as spines, that can lodge in gills, and can cause irritation and eventual suffocation. The other fundamental way in which HABs are harmful is through high biomass accumulation, which may lead to environmental damage, ...
Standard PDF - Wiley Online Library
... soil water holding capacity, and increase the fraction of recalcitrant soil organic matter content. In restoration studies, recalcitrant C amendments (commonly sawdust) have been used to immobilize N, thereby increasing competitiveness of native grass species (DiTomaso 2000, Corbin and D’Antonio 200 ...
... soil water holding capacity, and increase the fraction of recalcitrant soil organic matter content. In restoration studies, recalcitrant C amendments (commonly sawdust) have been used to immobilize N, thereby increasing competitiveness of native grass species (DiTomaso 2000, Corbin and D’Antonio 200 ...
ABSTRACT Title of Dissertation: ECOLOGICAL DYNAMICS OF MACROLEPIDOPTERA
... species at spatial scales from individual trees to the landscape. I used a spatially explicit, nested sampling design to document relative contributions of each scale to the landscape diversity using additive diversity partitioning, and to ask at multiple scales whether the vegetation context of the ...
... species at spatial scales from individual trees to the landscape. I used a spatially explicit, nested sampling design to document relative contributions of each scale to the landscape diversity using additive diversity partitioning, and to ask at multiple scales whether the vegetation context of the ...
Biodiversity effects on ecosystem functioning: emerging issues and
... objective approaches have now been developed (Hooper et al. 2002, Petchey and Gaston 2002). It is possible that a more reliable representation of functional roles may be gained by allocating species into groups based on several relevant traits, rather than an individual trait. Patch or habitat diver ...
... objective approaches have now been developed (Hooper et al. 2002, Petchey and Gaston 2002). It is possible that a more reliable representation of functional roles may be gained by allocating species into groups based on several relevant traits, rather than an individual trait. Patch or habitat diver ...
Lobel et al.vp - Biodiversität, Evolution und Ökologie der Pflanzen
... other limestone in northern Europe, the Ordovician limestone on Öland is hard with horizontal layers (KRAHULEC et al. 1986, STERNER & LUNDQVIST 1986). In some places these soils are poorly drained and thus often strongly affected by frost in winter. Glacifluvial deposits form sandy soils along the Ö ...
... other limestone in northern Europe, the Ordovician limestone on Öland is hard with horizontal layers (KRAHULEC et al. 1986, STERNER & LUNDQVIST 1986). In some places these soils are poorly drained and thus often strongly affected by frost in winter. Glacifluvial deposits form sandy soils along the Ö ...
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.