What you Need to Know for the Ecology Test
... Community Competition Forest Population Ecosystem ...
... Community Competition Forest Population Ecosystem ...
ECOLOGY AND BEHAVIOR
... ● Predation provides a strong selection pressure on both prey & predator ...
... ● Predation provides a strong selection pressure on both prey & predator ...
Relationships Among Organisms
... Populations live in groups of other populations which form communities. Community- is a group of species that live in the same habitat and interact with each other. ...
... Populations live in groups of other populations which form communities. Community- is a group of species that live in the same habitat and interact with each other. ...
Guild coevolution
... • Selection will favor honest genotypes (i.e. those that do not cheat) if the individuals genetic self-interest depends on the fitness of the host or partner – Vertical transmission of endosymbionts – Lifelong associations – Restricted opportunities to switch partners Yucca moths and yuccas Yucca mo ...
... • Selection will favor honest genotypes (i.e. those that do not cheat) if the individuals genetic self-interest depends on the fitness of the host or partner – Vertical transmission of endosymbionts – Lifelong associations – Restricted opportunities to switch partners Yucca moths and yuccas Yucca mo ...
Chapter 14 Interactions in Ecosystems Review
... 4. __Ecological Niche___ includes all of the factors that a species needs to survive. 5. What keeps two species from occupying the same niche? Competitive Exclusion 6. Name two outcomes to competitive exclusion. 1. One Species Benefits and the Other Species Probably Goes Extinct 2. Niche is Divided ...
... 4. __Ecological Niche___ includes all of the factors that a species needs to survive. 5. What keeps two species from occupying the same niche? Competitive Exclusion 6. Name two outcomes to competitive exclusion. 1. One Species Benefits and the Other Species Probably Goes Extinct 2. Niche is Divided ...
Population Interactions
... Interactions within communities • Populations do not live in isolation • Populations of different species interact in a community. • Each occupies its own ecological niche ...
... Interactions within communities • Populations do not live in isolation • Populations of different species interact in a community. • Each occupies its own ecological niche ...
seral communities
... Ecology – Community Interactions As populations interact with one another and influence each other’s survival and reproduction, they serve as agents of natural selection – leads to Coevolution Biotic Interactions: 1. Predator-prey – very close relationship ...
... Ecology – Community Interactions As populations interact with one another and influence each other’s survival and reproduction, they serve as agents of natural selection – leads to Coevolution Biotic Interactions: 1. Predator-prey – very close relationship ...
Chapter 14 Review
... • A habitat differs from a niche. • A habitat is where a species lives. Example: the habitat of a lion is the savannah. • An ecological niche is how a species lives. • An ecological niche includes food, temperature, water, and behavior. ...
... • A habitat differs from a niche. • A habitat is where a species lives. Example: the habitat of a lion is the savannah. • An ecological niche is how a species lives. • An ecological niche includes food, temperature, water, and behavior. ...
Evolution notes lecture Interactions between populations Fall 2013
... • How is the concept of predator used to refer to consumer interactions? • Explain how predators and prey may coevolve in an evolutionary “arms race.” • Explain how mutualists may coevolve together. What are the different categories of mutualism? ...
... • How is the concept of predator used to refer to consumer interactions? • Explain how predators and prey may coevolve in an evolutionary “arms race.” • Explain how mutualists may coevolve together. What are the different categories of mutualism? ...
Worksheet 5
... 3. Describe, with examples, how biotic and abiotic factors may affect the distribution of organisms. 4. List the four abiotic factors that are the most important components of climate. 5. Distinguish between macroclimate and microclimate patterns. Provide an example of a microclimate. Chapter 53 Com ...
... 3. Describe, with examples, how biotic and abiotic factors may affect the distribution of organisms. 4. List the four abiotic factors that are the most important components of climate. 5. Distinguish between macroclimate and microclimate patterns. Provide an example of a microclimate. Chapter 53 Com ...
Ecosystems and Communities
... species can occupy the same niche in the same habitat at the same time Direct competition in nature often results in winner and loser – losing organism fails to survive ...
... species can occupy the same niche in the same habitat at the same time Direct competition in nature often results in winner and loser – losing organism fails to survive ...
File
... A __________________________________ barrier divides one population into two or more populations. 20. Sympatric Speciation A species evolves into a new species without a ___________________________ barrier. The ancestor species and the new species live side by side during the speciation process. 21. ...
... A __________________________________ barrier divides one population into two or more populations. 20. Sympatric Speciation A species evolves into a new species without a ___________________________ barrier. The ancestor species and the new species live side by side during the speciation process. 21. ...
SYMBIOSIS – two or more species live together in a close, long
... SYMBIOSIS – two or more species live together in a close, long-term association ...
... SYMBIOSIS – two or more species live together in a close, long-term association ...
Chapter 17 evol of population Notes
... There are two sides to this coin: 1) It may promote divergence between closely related species when there are unexploited ecological niches available. ...
... There are two sides to this coin: 1) It may promote divergence between closely related species when there are unexploited ecological niches available. ...
Ecological Concerns to be Addressed
... support a high diversity of bird species. A total of 94 species has been recorded (if the West River is included as part of the survey area this total approaches 100). This list includes species that are highly sensitive to habitat fragmentation and disturbance including northern goshawk, red-should ...
... support a high diversity of bird species. A total of 94 species has been recorded (if the West River is included as part of the survey area this total approaches 100). This list includes species that are highly sensitive to habitat fragmentation and disturbance including northern goshawk, red-should ...
APES Alec Humphries Chapter 8 Guided Reading 1: Explain how
... 1: Define and give an example of each of the following: * Convergent Evolution The independent evolution of similar features in species of different lineages. Ex: wings, birds have different kinds of them but some cannot fly. * Divergent Evolution The accumulation of differences between groups which ...
... 1: Define and give an example of each of the following: * Convergent Evolution The independent evolution of similar features in species of different lineages. Ex: wings, birds have different kinds of them but some cannot fly. * Divergent Evolution The accumulation of differences between groups which ...
Answers to Review Questions
... Ans: A keystone species is a species, often a predator, that exerts a profound influence on a community in excess of that expected by its relative abundance. The wolf is considered a keystone species because in areas where wolves were hunted to extinction, the populations of elk and other herbivores ...
... Ans: A keystone species is a species, often a predator, that exerts a profound influence on a community in excess of that expected by its relative abundance. The wolf is considered a keystone species because in areas where wolves were hunted to extinction, the populations of elk and other herbivores ...
Mexican Biodiversity
... Biodiversity, or biological diversity, is the variety of life. This recent concept includes different levels of biological organization. It considers the diversity of species of plants and animals that live in one place, their genetic variability, the ecosystems that these species form part of, and ...
... Biodiversity, or biological diversity, is the variety of life. This recent concept includes different levels of biological organization. It considers the diversity of species of plants and animals that live in one place, their genetic variability, the ecosystems that these species form part of, and ...
Gause`s competitive exclusion principle and “the
... phytoplankton is essentially how it is possible for a number of species to coexist in a relatively isotropic or unstructured environment all competing for the same sorts of materials ...
... phytoplankton is essentially how it is possible for a number of species to coexist in a relatively isotropic or unstructured environment all competing for the same sorts of materials ...
Ecological Interactions
... squirrels into parts of England in the early 20th century, red squirrels had been the only species of squirrel in the country. The gray squirrels were larger and bred faster and successfully competed for resources. Within a couple years of overlap in an area, the red squirrels ...
... squirrels into parts of England in the early 20th century, red squirrels had been the only species of squirrel in the country. The gray squirrels were larger and bred faster and successfully competed for resources. Within a couple years of overlap in an area, the red squirrels ...
Ecological fitting
Ecological fitting is ""the process whereby organisms colonize and persist in novel environments, use novel resources or form novel associations with other species as a result of the suites of traits that they carry at the time they encounter the novel condition.” It can be understood as a situation in which a species' interactions with its biotic and abiotic environment seem to indicate a history of coevolution, when in actuality the relevant traits evolved in response to a different set of biotic and abiotic conditions. The simplest form of ecological fitting is resource tracking, in which an organism continues to exploit the same resources, but in a new host or environment. In this framework, the organism occupies a multidimensional operative environment defined by the conditions in which it can persist, similar to the idea of the Hutchinsonian niche. In this case, a species can colonize new environments (e.g. an area with the same temperature and water regime) and/or form new species interactions (e.g. a parasite infecting a new host) which can lead to the misinterpretation of the relationship as coevolution, although the organism has not evolved and is continuing to exploit the same resources it always has. The more strict definition of ecological fitting requires that a species encounter an environment or host outside of its original operative environment and obtain realized fitness based on traits developed in previous environments that are now co-opted for a new purpose. This strict form of ecological fitting can also be expressed either as colonization of new habitat or the formation of new species interactions.