Short term
... may differ. Using qualitative data due to absence of quantitative studies is one of the main limitations. The other major limitation is the low number of species due to lack of time to do a larger study. ...
... may differ. Using qualitative data due to absence of quantitative studies is one of the main limitations. The other major limitation is the low number of species due to lack of time to do a larger study. ...
Edition 28 - Museums Victoria
... it usually takes about 5 years for an exotic species to be reported to authorities by which time it is almost impossible to eradicate the species only to manage it. That seems to be the case of the Red Imported Fire Ant in SE Qld. They have reduced its numbers substantially, but new outbreaks contin ...
... it usually takes about 5 years for an exotic species to be reported to authorities by which time it is almost impossible to eradicate the species only to manage it. That seems to be the case of the Red Imported Fire Ant in SE Qld. They have reduced its numbers substantially, but new outbreaks contin ...
Maintaining Biodiversity (Conservation) PPT CXH
... manipulate breeding (hormones, artificial insemination, artificial selection); protect from predation, hunters; reduce competition between individuals / species • Used to reintroduce species that have migrated to other areas • Sperm (frozen) from one male – used to fertilise a large number of female ...
... manipulate breeding (hormones, artificial insemination, artificial selection); protect from predation, hunters; reduce competition between individuals / species • Used to reintroduce species that have migrated to other areas • Sperm (frozen) from one male – used to fertilise a large number of female ...
Topic 2 - Ecology
... • Sea otter (Pacific Northwest): feed on sea urchins, controlling their population. • Without otters, urchins would eat up the habitat's kelp. Kelp (giant seaweed, a protist) is a major source of food and shelter for the ecosystem. Some species of crabs, snails, and geese depend on kelp for food. Ma ...
... • Sea otter (Pacific Northwest): feed on sea urchins, controlling their population. • Without otters, urchins would eat up the habitat's kelp. Kelp (giant seaweed, a protist) is a major source of food and shelter for the ecosystem. Some species of crabs, snails, and geese depend on kelp for food. Ma ...
1 Biology 413 (Zoogeography) Final Exam Winter Term 2
... Question 4: Haffer’s (1969) hypothesis represents the “old view” that “islands” of Amazonian lowland rain forest persisted during the last glacial maxima and can be used to explain current patterns of disjunct taxa and speciation. The “new view” is that the Amazon did not exhibit isolated forest ref ...
... Question 4: Haffer’s (1969) hypothesis represents the “old view” that “islands” of Amazonian lowland rain forest persisted during the last glacial maxima and can be used to explain current patterns of disjunct taxa and speciation. The “new view” is that the Amazon did not exhibit isolated forest ref ...
Exotic Invasive Species in the US Virgin Islands
... ach year invasive exotic species cause both billions of dollars in damage and the extinction of many native species. In the US alone, invasive species cost an estimated $138 billion annually in economic damage and control costs. Invasive species are considered a major factor in the decline of half o ...
... ach year invasive exotic species cause both billions of dollars in damage and the extinction of many native species. In the US alone, invasive species cost an estimated $138 billion annually in economic damage and control costs. Invasive species are considered a major factor in the decline of half o ...
Ch 5 PPT
... Keystone Species • Species that have strong and/or wide-reaching effects on a community • Removal of a keystone species can significantly alter the structure of a ...
... Keystone Species • Species that have strong and/or wide-reaching effects on a community • Removal of a keystone species can significantly alter the structure of a ...
Alien invasive species (AIS)
... In the marine environment, invasive alien species thought to have been introduced through ballast water, include the introduction of a comb jellyfish (Mnemiopsis leidyi) into the Black Sea, from eastern America, which contributed to fisheries collapse. Its native range was restricted to the temperat ...
... In the marine environment, invasive alien species thought to have been introduced through ballast water, include the introduction of a comb jellyfish (Mnemiopsis leidyi) into the Black Sea, from eastern America, which contributed to fisheries collapse. Its native range was restricted to the temperat ...
Community Dynamics
... All species arriving on an unoccupied site can survive. Thus, the initial community composition is simply a function of who gets there first. Species that appear later simply arrived later or arrived early but grew more slowly. Late arriving species tolerate the presence of early species and grow de ...
... All species arriving on an unoccupied site can survive. Thus, the initial community composition is simply a function of who gets there first. Species that appear later simply arrived later or arrived early but grew more slowly. Late arriving species tolerate the presence of early species and grow de ...
Aquatic invasive species
... environment managers throughout the world including eastern Canada. Invasive species can threaten aquatic ecosystems, occupying habitats or outcompeting native species. These invasive species may show rapid population growth in the absence of natural predators and may soon become established to the ...
... environment managers throughout the world including eastern Canada. Invasive species can threaten aquatic ecosystems, occupying habitats or outcompeting native species. These invasive species may show rapid population growth in the absence of natural predators and may soon become established to the ...
Chapter 7
... on part of another organism. In mutualism, two species interact in a way that benefits both. Commensalism is an interaction that benefits one species but has little, if any, effect on the other species. ...
... on part of another organism. In mutualism, two species interact in a way that benefits both. Commensalism is an interaction that benefits one species but has little, if any, effect on the other species. ...
Vanishing Species - Endangered Species Handbook
... out the forests of wildlife. The pet trade is driving many colorful tropical birds, reptiles and primates to endangered status. Luxury goods, such as high-priced reptile products, provide an incentive to hunt--legally or illegally--lizards, crocodiles and snakes for this market, endangering many spe ...
... out the forests of wildlife. The pet trade is driving many colorful tropical birds, reptiles and primates to endangered status. Luxury goods, such as high-priced reptile products, provide an incentive to hunt--legally or illegally--lizards, crocodiles and snakes for this market, endangering many spe ...
Mysteries Explored Part 11: Plants and Insects
... and found a tiny caterpillar that clears the fuzz off the leaf underside and makes a big pile of it to hide in. Walking down a sidewalk nearby, I found a colony of ragweed specific beetles (isn’t it nice to know that something eats ragweed?) in various stages of development; many were pupating in la ...
... and found a tiny caterpillar that clears the fuzz off the leaf underside and makes a big pile of it to hide in. Walking down a sidewalk nearby, I found a colony of ragweed specific beetles (isn’t it nice to know that something eats ragweed?) in various stages of development; many were pupating in la ...
Succession
... • Biotic examples: elephants tearing up trees, prairie dogs moving soil for burrows, etc • Human examples: bulldozing, paving, etc ...
... • Biotic examples: elephants tearing up trees, prairie dogs moving soil for burrows, etc • Human examples: bulldozing, paving, etc ...
Biodiversity Threats
... To manage Golden Gate Highlands National Park in a collaborative learning environment as part of an ecologically functional and sustainable patchwork of different land uses in the region that ensures the persistence of the natural and cultural heritage for the benefit and enjoyment of all. SANParks ...
... To manage Golden Gate Highlands National Park in a collaborative learning environment as part of an ecologically functional and sustainable patchwork of different land uses in the region that ensures the persistence of the natural and cultural heritage for the benefit and enjoyment of all. SANParks ...
lect_15_Mutualisms
... Disappearance of key fruit would push the tityra, the toucan, and other species to local extinction. Without its main disperser, Casearia, Virola (primarily dispersed by the Chestnut-mandibled toucan), and other trees dependent on these birds for dispersal would slowly lose their competitive positio ...
... Disappearance of key fruit would push the tityra, the toucan, and other species to local extinction. Without its main disperser, Casearia, Virola (primarily dispersed by the Chestnut-mandibled toucan), and other trees dependent on these birds for dispersal would slowly lose their competitive positio ...
Maine`s Marine Invasion - Salem Sound Coastwatch
... Slide 4: Why is it important to distinguish native from non-native? While many species can’t survive or reproduce in their new environment, the ones that can pose a significant threat b/c they often don’t face the predators, diseases and competition that keep their numbers in check in their native e ...
... Slide 4: Why is it important to distinguish native from non-native? While many species can’t survive or reproduce in their new environment, the ones that can pose a significant threat b/c they often don’t face the predators, diseases and competition that keep their numbers in check in their native e ...
L: (1) Big Question—consistent patterns of spp distribution in space
... 2007). This pattern may be due to a variety of factors including decreasing similarity among habitat features (niche processes or species sorting, Soinenen et al 2007; Nekola and White 1999; Tuomisto et al. 2003, Gilbert and Lechowicz 2004), the dispersal limitations dictated by the spatial configur ...
... 2007). This pattern may be due to a variety of factors including decreasing similarity among habitat features (niche processes or species sorting, Soinenen et al 2007; Nekola and White 1999; Tuomisto et al. 2003, Gilbert and Lechowicz 2004), the dispersal limitations dictated by the spatial configur ...
3.2 Communities
... beavers can convert a small stream in a forest into an aquatic ecosystem that suits their needs perfectly. By building dams across streams and creeks, they create ponds that provide them with safety and a food supply of aquatic plants. Their tree-cutting activities also make small clearings in the f ...
... beavers can convert a small stream in a forest into an aquatic ecosystem that suits their needs perfectly. By building dams across streams and creeks, they create ponds that provide them with safety and a food supply of aquatic plants. Their tree-cutting activities also make small clearings in the f ...
Outline - CarrollEnvironmentalScience
... 3. Predators have a variety of ways to capture prey. Herbivores feed on immobile plant species; carnivores use pursuit of prey or ambush to capture prey. Some predators use camouflage, and others use chemical warfare (venom) to capture prey or deter predators. 4. Prey species escape predators in a n ...
... 3. Predators have a variety of ways to capture prey. Herbivores feed on immobile plant species; carnivores use pursuit of prey or ambush to capture prey. Some predators use camouflage, and others use chemical warfare (venom) to capture prey or deter predators. 4. Prey species escape predators in a n ...
Natural Selection, Adaptations, and Niches
... What do oak trees do? If you can answer that question you know the oak trees "profession" or its ecological niche. Perhaps you think that oak trees just stand ...
... What do oak trees do? If you can answer that question you know the oak trees "profession" or its ecological niche. Perhaps you think that oak trees just stand ...
Community Properties
... • Intervening communities found in succession after pioneer and before climax community are known as “seres”. • Types of communities that area grows through during succession are important, will work on during group exercise • Succession is driven by competition between organisms in each sere. ...
... • Intervening communities found in succession after pioneer and before climax community are known as “seres”. • Types of communities that area grows through during succession are important, will work on during group exercise • Succession is driven by competition between organisms in each sere. ...
Succession
... • Because the plants that live there are adapted to living under those environmental conditions. • In this case, the fir, spruce, and birch trees all are tall as adults so they easily can get plenty of sunlight. In addition, all have wide-ranging root systems to find water and minerals. • More impor ...
... • Because the plants that live there are adapted to living under those environmental conditions. • In this case, the fir, spruce, and birch trees all are tall as adults so they easily can get plenty of sunlight. In addition, all have wide-ranging root systems to find water and minerals. • More impor ...
6.1. Invasive Species Action Plan
... affected by the spread of rhododendron, a shrub that invades native vegetation and shades out sunlight. Pet shops, aquaria and scientific institutions The trade in ornamental fish presents an interesting case. In Northern Ireland, imports of ornamental fish, molluscs and plants are allowed subject t ...
... affected by the spread of rhododendron, a shrub that invades native vegetation and shades out sunlight. Pet shops, aquaria and scientific institutions The trade in ornamental fish presents an interesting case. In Northern Ireland, imports of ornamental fish, molluscs and plants are allowed subject t ...
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.