Review from Reports of the National Center for Science Education
... so on), the human impact on their populations, IUCN conservation status (least concern, threatened, or endangered), and then usually a wonderfully engaging fulfillment of the book’s titular promise, an explanation of “what it means.” Chapter 5 has one of the best available descriptions, for its leng ...
... so on), the human impact on their populations, IUCN conservation status (least concern, threatened, or endangered), and then usually a wonderfully engaging fulfillment of the book’s titular promise, an explanation of “what it means.” Chapter 5 has one of the best available descriptions, for its leng ...
Ecology Part 1
... in its environment—how it meets its specific needs for food and shelter, how and where it survives, and where it reproduces in its environment. Ex: owls control rodent population at night ...
... in its environment—how it meets its specific needs for food and shelter, how and where it survives, and where it reproduces in its environment. Ex: owls control rodent population at night ...
Species Interactions: Predation
... Major assumption – predators determine abundance of their prey 1. Predators actually control abundance of prey and keep numbers below what they could be 2. Predators only remove “doomed surplus”. Individuals that would likely die for other reasons. Thus removing predators will have no effect on pop ...
... Major assumption – predators determine abundance of their prey 1. Predators actually control abundance of prey and keep numbers below what they could be 2. Predators only remove “doomed surplus”. Individuals that would likely die for other reasons. Thus removing predators will have no effect on pop ...
Ecology, interdependence, ecological model, biosphere, ecosystem
... low birth rates to have high rates of population growth? They could have high rates of immigration, a large population to start with, and/or low death rate. ...
... low birth rates to have high rates of population growth? They could have high rates of immigration, a large population to start with, and/or low death rate. ...
Wk 8
... tolerances, disease resistance, and relative community scale. • Over time, the habitat may become modified so to favor the next organisms in the sere (e.g. nutrient depletion shifts competition). • Stages of Succession: – Early invaders: rapid reproducers and colonizers (r selection) – Mid- to late- ...
... tolerances, disease resistance, and relative community scale. • Over time, the habitat may become modified so to favor the next organisms in the sere (e.g. nutrient depletion shifts competition). • Stages of Succession: – Early invaders: rapid reproducers and colonizers (r selection) – Mid- to late- ...
Bio103_37_Learning_Targets
... A. 37.1 A community includes all the organisms inhabiting a particular area 1. Community ecology is concerned with factors that a. influence species composition and distribution of communities and b. affect community stability. 2. A biological community is a. assemblage of all the populations of org ...
... A. 37.1 A community includes all the organisms inhabiting a particular area 1. Community ecology is concerned with factors that a. influence species composition and distribution of communities and b. affect community stability. 2. A biological community is a. assemblage of all the populations of org ...
wfsc420 lesson04
... Absence of natural enemies allows a herbivore population to exceed carrying capacity, which results in overgrazing of the habitat. The herbivore population subsequently ...
... Absence of natural enemies allows a herbivore population to exceed carrying capacity, which results in overgrazing of the habitat. The herbivore population subsequently ...
06_3eIG - ThilowAPES
... 2. In case after case, managers are finding that controlling and eradicating invasive species are so difficult and expensive that preventive measures represent a much better investment. 3. In most cases, ecologists view invasive species as having overall negative impacts on ecosystems. In rare cases ...
... 2. In case after case, managers are finding that controlling and eradicating invasive species are so difficult and expensive that preventive measures represent a much better investment. 3. In most cases, ecologists view invasive species as having overall negative impacts on ecosystems. In rare cases ...
6 - White River High School
... 2. In case after case, managers are finding that controlling and eradicating invasive species are so difficult and expensive that preventive measures represent a much better investment. 3. In most cases, ecologists view invasive species as having overall negative impacts on ecosystems. In rare cases ...
... 2. In case after case, managers are finding that controlling and eradicating invasive species are so difficult and expensive that preventive measures represent a much better investment. 3. In most cases, ecologists view invasive species as having overall negative impacts on ecosystems. In rare cases ...
3 River Wildlife
... Lamprey look similar to eels, but have several unusual features, such as no bones, no jaws and a large flexible lip they use to attach themselves to host fish (salmon and trout) to eat their flesh and blood. a) Search for river lamprey using an internet search engine and look at lamprey photos. Find ...
... Lamprey look similar to eels, but have several unusual features, such as no bones, no jaws and a large flexible lip they use to attach themselves to host fish (salmon and trout) to eat their flesh and blood. a) Search for river lamprey using an internet search engine and look at lamprey photos. Find ...
Preserving Habitat for Bird Species At Risk in the Parkland
... forest and greater prairie ecosystems. Below the Parkland Transition Line is the prairie region, which is largely dominated by grasslands, wetlands and other open areas. The area above this line, the boreal forest, is characterised by coniferous and mixed forests. Unlike the boreal forest and the pr ...
... forest and greater prairie ecosystems. Below the Parkland Transition Line is the prairie region, which is largely dominated by grasslands, wetlands and other open areas. The area above this line, the boreal forest, is characterised by coniferous and mixed forests. Unlike the boreal forest and the pr ...
Ecological effects and distribution of invasive non - IPNA-CSIC
... Rattus rattus, the house mouse Mus domesticus and the European rabbit Oryctolagus cuniculus. Unfortunately, all of these species are considered to be mainly responsible for the greater part of the damage caused in insular ecosystems worldwide (Courchamp et al., 2003). With regard to the Canarian Arc ...
... Rattus rattus, the house mouse Mus domesticus and the European rabbit Oryctolagus cuniculus. Unfortunately, all of these species are considered to be mainly responsible for the greater part of the damage caused in insular ecosystems worldwide (Courchamp et al., 2003). With regard to the Canarian Arc ...
Biodiversity
... HOT SPOTS OF BIODIVERSITY →Areas which exhibit high species richness as well as high species endemism are termed as hot spots of biodiversity. →The term was introduced by Myers(1988). →There are 25 hot spots at global level. ...
... HOT SPOTS OF BIODIVERSITY →Areas which exhibit high species richness as well as high species endemism are termed as hot spots of biodiversity. →The term was introduced by Myers(1988). →There are 25 hot spots at global level. ...
Biodiversity (pages 95–105)
... • Laws and treaties can protect species. A law in the United States called the Endangered Species Act protects threatened species and endangered species. International treaties can protect species around the world by outlawing the buying and selling of endangered species. • Protecting a whole ecosys ...
... • Laws and treaties can protect species. A law in the United States called the Endangered Species Act protects threatened species and endangered species. International treaties can protect species around the world by outlawing the buying and selling of endangered species. • Protecting a whole ecosys ...
04-Relationships
... resources (biotic and abiotic) it needs to survive Niche: The species’ role in its environment e.g., type of food, predators, ability to reproduce, habitat needs ...
... resources (biotic and abiotic) it needs to survive Niche: The species’ role in its environment e.g., type of food, predators, ability to reproduce, habitat needs ...
What is a population pyramid?
... The Importance of Biodiversity • Most of the world’s food crops come from just a few species. • Wild species serve as reservoirs of desirable genetic traits that might be needed to improve domestic crop species. ...
... The Importance of Biodiversity • Most of the world’s food crops come from just a few species. • Wild species serve as reservoirs of desirable genetic traits that might be needed to improve domestic crop species. ...
Materials and methods - University of Western Cape
... Since section ABC and section DEF show variation in both all of these variables one would expect that there would also be variation in Species diversity and density. Table 1 verifies the difference in insect-density. And as mentioned earlier there is a 15/11 difference in species diversity (number o ...
... Since section ABC and section DEF show variation in both all of these variables one would expect that there would also be variation in Species diversity and density. Table 1 verifies the difference in insect-density. And as mentioned earlier there is a 15/11 difference in species diversity (number o ...
Ecology
... There are only five trophic levels: producers; primary, secondary, and tertiary consumers; and decomposers. Most communities are controlled bottom-up by mineral nutrient supply, and few communities have enough nutrients to support ...
... There are only five trophic levels: producers; primary, secondary, and tertiary consumers; and decomposers. Most communities are controlled bottom-up by mineral nutrient supply, and few communities have enough nutrients to support ...
Community structure
... Concept 15.3: Communities can be characterized by complex networks of direct and indirect interactions that vary in strength and direction. ...
... Concept 15.3: Communities can be characterized by complex networks of direct and indirect interactions that vary in strength and direction. ...
Chapter 5 Lecture 09
... • Isolated communities tend to be less diverse… why??? – Difficult to reach & successfully colonize the area. – Species may become locally extinct, and it is difficult to replace them. – Isolated areas tend to be small, thus there are fewer potential ecological niches. – Leads to reproductive isolat ...
... • Isolated communities tend to be less diverse… why??? – Difficult to reach & successfully colonize the area. – Species may become locally extinct, and it is difficult to replace them. – Isolated areas tend to be small, thus there are fewer potential ecological niches. – Leads to reproductive isolat ...
Environmental Science
... A niche is more than a habitat, it is also what the organism does within its habitat ...
... A niche is more than a habitat, it is also what the organism does within its habitat ...
Island restoration
The ecological restoration of islands, or island restoration, is the application of the principles of ecological restoration to islands and island groups. Islands, due to their isolation, are home to many of the world's endemic species, as well as important breeding grounds for seabirds and some marine mammals. Their ecosystems are also very vulnerable to human disturbance and particularly to introduced species, due to their small size. Island groups such as New Zealand and Hawaii have undergone substantial extinctions and losses of habitat. Since the 1950s several organisations and government agencies around the world have worked to restore islands to their original states; New Zealand has used them to hold natural populations of species that would otherwise be unable to survive in the wild. The principal components of island restoration are the removal of introduced species and the reintroduction of native species.