Temporal Speciation Patterns
... of an Asian Drosophila species that spread before the current Hawaiian Islands were formed, and colonized the chain by 'island hopping' about 26 million years ago. New islands were colonized as they became suitable ecologically. Lava flows and geographic separation fragmented species' ranges, causin ...
... of an Asian Drosophila species that spread before the current Hawaiian Islands were formed, and colonized the chain by 'island hopping' about 26 million years ago. New islands were colonized as they became suitable ecologically. Lava flows and geographic separation fragmented species' ranges, causin ...
Chapter 7: Community Ecology
... B. The number of species on an island is determined by how fast new species arrive, old species become extinct, the size of the island and distance from the mainland. 1. The species equilibrium model, or the theory of island biogeography was proposed in the 1960’s to explain differences in species r ...
... B. The number of species on an island is determined by how fast new species arrive, old species become extinct, the size of the island and distance from the mainland. 1. The species equilibrium model, or the theory of island biogeography was proposed in the 1960’s to explain differences in species r ...
Field Biogeography Syllabus - Field Biogeography and Species
... plants, and particularly Angiosperms. Knowing families, and the characters that distinguish them, should facilitate the identification of other seed plants that you might find in the future. It is particularly important for you to form a mental image of the group of characters that defines each fami ...
... plants, and particularly Angiosperms. Knowing families, and the characters that distinguish them, should facilitate the identification of other seed plants that you might find in the future. It is particularly important for you to form a mental image of the group of characters that defines each fami ...
Ch 4, 5, 6, Notes
... • Biodiversity – variety of organisms living in an area at the same time includes # of different species and population size of each species. – Genetic diversity – genes & pattern of variation – Species diversity – variety & abundance of species – Ecosystem diversity – variety of habitats • Humans ...
... • Biodiversity – variety of organisms living in an area at the same time includes # of different species and population size of each species. – Genetic diversity – genes & pattern of variation – Species diversity – variety & abundance of species – Ecosystem diversity – variety of habitats • Humans ...
Predatory Behavior in Montezuma Oropendola
... uniformly gray above and cream below without the saddle-shaped marking and bands of mainland Nntrix sipedon. Camin and Ehrlich (Evolution, 12:504-511, 1958) compared the pattern of 11 different females from the Bass Island complex to the distribution of patterns within their litters and found that i ...
... uniformly gray above and cream below without the saddle-shaped marking and bands of mainland Nntrix sipedon. Camin and Ehrlich (Evolution, 12:504-511, 1958) compared the pattern of 11 different females from the Bass Island complex to the distribution of patterns within their litters and found that i ...
Introductory pages - Garry Oak Ecosystems Recovery Team
... planning, and preparing resources for restoration practitioners and land managers. Kersti also has an interest in GIS and has developed geodatabases to track the occurrence of species and ecosystems at risk. In 2010, she relocated to Squamish, B.C. where she works with Cascade Environmental Resource ...
... planning, and preparing resources for restoration practitioners and land managers. Kersti also has an interest in GIS and has developed geodatabases to track the occurrence of species and ecosystems at risk. In 2010, she relocated to Squamish, B.C. where she works with Cascade Environmental Resource ...
Powerpoints
... These NGOs collect money from individual citizens and then use the funds to buy critical habitat from private landowners. The private provision of a public good can take place because of the role of nongovernmental organizations. These groups serve to reduce free rider problems by providing an ...
... These NGOs collect money from individual citizens and then use the funds to buy critical habitat from private landowners. The private provision of a public good can take place because of the role of nongovernmental organizations. These groups serve to reduce free rider problems by providing an ...
Ecosystem Restoration on the California Channel Islands
... introduced species. In Channel Islands National Park, approximately 25% of the plants are nonnative species (Halvorson 1992). Chain-wide, the islands with the highest percentages are Santa Barbara with 31 % and San Nicolas with 44%. Exact percentages keep changing because the lists per island are no ...
... introduced species. In Channel Islands National Park, approximately 25% of the plants are nonnative species (Halvorson 1992). Chain-wide, the islands with the highest percentages are Santa Barbara with 31 % and San Nicolas with 44%. Exact percentages keep changing because the lists per island are no ...
Community Relationship Notes
... • Nonnative plant species are invading the nation's parks at an alarming rate, displacing native vegetation and threatening the wildlife that depend on ...
... • Nonnative plant species are invading the nation's parks at an alarming rate, displacing native vegetation and threatening the wildlife that depend on ...
PDF, 150 KB, Background
... 31% of amphibians. Between 1970 and 2000, the total number of species fell by 40%. Ecosystems Not only species of fauna and flora but also numerous ecosystems are endangered worldwide. In 1990, the UN Food and Agriculture Organization (FAO) estimated that 42% of tropical rainforest had probably been ...
... 31% of amphibians. Between 1970 and 2000, the total number of species fell by 40%. Ecosystems Not only species of fauna and flora but also numerous ecosystems are endangered worldwide. In 1990, the UN Food and Agriculture Organization (FAO) estimated that 42% of tropical rainforest had probably been ...
Aichi Biodiversity Targets
... This target focuses on two types of actions, the control or eradication of invasive alien species and the management of their introduction pathways. Specifically, meeting this target globally will require that: • Invasive alien species are identified - Broadly invasive alien species are those which ...
... This target focuses on two types of actions, the control or eradication of invasive alien species and the management of their introduction pathways. Specifically, meeting this target globally will require that: • Invasive alien species are identified - Broadly invasive alien species are those which ...
Principles of ecology
... Almost 40 species of plants and animals in the United States have gone extinct since 1980 ...
... Almost 40 species of plants and animals in the United States have gone extinct since 1980 ...
File - need help with revision notes?
... Carrying capacity: the maximum population size that can be maintained over a period of time in a particular habitat. Competition: happens when resources like food or water are not present in adequate amounts to satisfy needs of all the individuals who depend on those resources. Intraspecific competi ...
... Carrying capacity: the maximum population size that can be maintained over a period of time in a particular habitat. Competition: happens when resources like food or water are not present in adequate amounts to satisfy needs of all the individuals who depend on those resources. Intraspecific competi ...
lecture 18 - adaptive radiation - Cal State LA
... Studies on marine snails (good fossil record) indicate that the lineages which survived mass extinctions had member species scattered in many different biomes, or environmentally different regions of the world - surviving lineages had some species in the deep sea, some in the tropics, some in cold w ...
... Studies on marine snails (good fossil record) indicate that the lineages which survived mass extinctions had member species scattered in many different biomes, or environmentally different regions of the world - surviving lineages had some species in the deep sea, some in the tropics, some in cold w ...
Outline - CarrollEnvironmentalScience
... 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 number of different ways, such as swift movement, protective shells, camouflage, or use of chemic ...
... 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 number of different ways, such as swift movement, protective shells, camouflage, or use of chemic ...
Exam 6 Review Key
... C. If the coefficient of relatedness is less than the cost divided by the benefit of the act, then the genetic material will be spread to the population D. Identical twins have a coefficient of relatedness of .5 ...
... C. If the coefficient of relatedness is less than the cost divided by the benefit of the act, then the genetic material will be spread to the population D. Identical twins have a coefficient of relatedness of .5 ...
Chapter 8 Outline
... 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 number of different ways, such as swift movement, protective shells, camouflage, or use of chemicals to repel or ...
... 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 number of different ways, such as swift movement, protective shells, camouflage, or use of chemicals to repel or ...
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.