Evolution, Biological Communities, and Biodiversity
... • Physiological stress (moisture, light, temp, pH, etc) • Competition among species • Predation • Luck ...
... • Physiological stress (moisture, light, temp, pH, etc) • Competition among species • Predation • Luck ...
Chapter 8
... Adapted to stable climate and environmental conditions Lower population growth rate (r) Population size fairly stable and usually close to carrying capacity (K) Specialist niche High ability to compete Late successional species Figure 8-10b, p. 167 ...
... Adapted to stable climate and environmental conditions Lower population growth rate (r) Population size fairly stable and usually close to carrying capacity (K) Specialist niche High ability to compete Late successional species Figure 8-10b, p. 167 ...
Species interactions
... Ability of one species to inhibit the survival and/or growth of individuals of another species = interspecific competition. Ability of individuals to suppress growth or survival of conspecifics = intraspecific competition (density dependence, e.g.) Effects can be substantial: e.g. 16-fold decrease i ...
... Ability of one species to inhibit the survival and/or growth of individuals of another species = interspecific competition. Ability of individuals to suppress growth or survival of conspecifics = intraspecific competition (density dependence, e.g.) Effects can be substantial: e.g. 16-fold decrease i ...
LECTURE OUTLINE
... An age-structure diagram divides the population into three age groups: prereproductive, reproductive, and postreproductive. 33.3 Regulation of Population Growth Members of opportunistic populations are small in size, mature early, and have a short life span. Equilibrium pattern organisms are fairly ...
... An age-structure diagram divides the population into three age groups: prereproductive, reproductive, and postreproductive. 33.3 Regulation of Population Growth Members of opportunistic populations are small in size, mature early, and have a short life span. Equilibrium pattern organisms are fairly ...
Ecology: Lecture 1
... (from Hutchinson and Shelford) For each environmental variable it faces in its world, an organism has a range of values for which it can grow and multiply ...
... (from Hutchinson and Shelford) For each environmental variable it faces in its world, an organism has a range of values for which it can grow and multiply ...
Full text
... accompanied by morphological ones” (Burla et al. 1949: 300). Whatever truth there may be in that final sentence, the original notion of ‘cryptic species’ was tied to a particular theory that explains species existence (“Species …are reproductively isolated populations”) rather than any particular ob ...
... accompanied by morphological ones” (Burla et al. 1949: 300). Whatever truth there may be in that final sentence, the original notion of ‘cryptic species’ was tied to a particular theory that explains species existence (“Species …are reproductively isolated populations”) rather than any particular ob ...
Preston
... plotting relative abundance of species against their rank in abundance. Greater evenness indicated by lower slope. ...
... plotting relative abundance of species against their rank in abundance. Greater evenness indicated by lower slope. ...
Chap 13 - CRCBiologyY11
... Use the example of a storm to show the effects that some abiotic factors have on other abiotic factors within an environment ...
... Use the example of a storm to show the effects that some abiotic factors have on other abiotic factors within an environment ...
Assessing distribution patterns and impacts of introduced plant
... data on Phase 3 plots. In contrast to monitoring efforts that focus on a list of invasive species, all vascular plants are recorded on plot. The proportion of introduced species in the forest community and their relative cover provides a measure of impact on the ecosystem. ...
... data on Phase 3 plots. In contrast to monitoring efforts that focus on a list of invasive species, all vascular plants are recorded on plot. The proportion of introduced species in the forest community and their relative cover provides a measure of impact on the ecosystem. ...
Chapter 3
... Commensalism- only one organism benefits, but the other is not affected This is a cattle egret. They will follow cattle and other livestock. As cattle, horses, and other livestock graze on the field, they cause movements that stir up various insects. As the insects are stirred up, the cattle egrets ...
... Commensalism- only one organism benefits, but the other is not affected This is a cattle egret. They will follow cattle and other livestock. As cattle, horses, and other livestock graze on the field, they cause movements that stir up various insects. As the insects are stirred up, the cattle egrets ...
Section 2.1 Summary – pages 35 - 45
... SYMBIOSIS Competition • The use of the same limited resource by two or more species in the same place at the same time. – Resource = anything necessity of life (water, nutrients, light, food, or space) • Competition may cause the development of different niches or physical characteristics. ...
... SYMBIOSIS Competition • The use of the same limited resource by two or more species in the same place at the same time. – Resource = anything necessity of life (water, nutrients, light, food, or space) • Competition may cause the development of different niches or physical characteristics. ...
Species Evenness Where
... such as number of species, relative species abundance, and species diversity. Guild: Group of organisms that all make their living in the same fashion (insectivorous). Seed eating animals in the desert. Life Form: Combination of structure and growth dynamics. ...
... such as number of species, relative species abundance, and species diversity. Guild: Group of organisms that all make their living in the same fashion (insectivorous). Seed eating animals in the desert. Life Form: Combination of structure and growth dynamics. ...
ppt - Kyle Harms
... “A poor environment supplies too meager a resource base for its would-be rarest species, and they become extinct” In other words “poor environments support lower population sizes, and population size is inversely related to extinction probability” No well-supported mechanism for the falling portion: ...
... “A poor environment supplies too meager a resource base for its would-be rarest species, and they become extinct” In other words “poor environments support lower population sizes, and population size is inversely related to extinction probability” No well-supported mechanism for the falling portion: ...
IN126 Are Mutualistic Relationships the Norm? An evolutionary
... However we do know that several different taxa are involved in the functional cleaning of fish clients (ie the cleanerfish and also cleaner shrimps, see Floeter et al 2007). However we are yet to understand what controls the relative frequency of occurrence of cleaner fish stations as compared to cl ...
... However we do know that several different taxa are involved in the functional cleaning of fish clients (ie the cleanerfish and also cleaner shrimps, see Floeter et al 2007). However we are yet to understand what controls the relative frequency of occurrence of cleaner fish stations as compared to cl ...
Unit 1: Evolution and viruses - Vet Trip
... Speciation can happen without geographic separation… • sympatric speciation – occurs in populations that live in the same area – less common – gene flow is reduced by: • polyploidy – cell division accident results in additional set of chromosomes – more common in plants – oats, cotton, potatoes, to ...
... Speciation can happen without geographic separation… • sympatric speciation – occurs in populations that live in the same area – less common – gene flow is reduced by: • polyploidy – cell division accident results in additional set of chromosomes – more common in plants – oats, cotton, potatoes, to ...
27-Population-Community
... Provide a way to express the age distribution characteristics of populations Survivorship is the percentage of an original population that survives to a ...
... Provide a way to express the age distribution characteristics of populations Survivorship is the percentage of an original population that survives to a ...
decreases come from deaths and emigration. Carrying Capacity It is
... Population dynamics describes constant changes in: 1.Size •increased growth comes from births and immigration; •decreases come from deaths and emigration. •Carrying Capacity It is the maximum population that a habitat can support over a given time period. Size is limited by availability of reso ...
... Population dynamics describes constant changes in: 1.Size •increased growth comes from births and immigration; •decreases come from deaths and emigration. •Carrying Capacity It is the maximum population that a habitat can support over a given time period. Size is limited by availability of reso ...
Are Ethiopian highlands changing? Amphibians as ecosystem
... devastating impact on mountain habitats. Quantitative data are being gathered across the globe to measure changes and evaluate the most appropriate mitigating and adaptive strategies. For Africa, few quantitative studies exist whereby conclusions can be firmly established, and this means that a fres ...
... devastating impact on mountain habitats. Quantitative data are being gathered across the globe to measure changes and evaluate the most appropriate mitigating and adaptive strategies. For Africa, few quantitative studies exist whereby conclusions can be firmly established, and this means that a fres ...
Competition - Flipped Out Science with Mrs. Thomas!
... It is common for predators of different species to all hunt some of the same prey species. The competition here is which predator species is best adapted to catch the limited supply of each prey species that they share. A species that cannot compete for a particular prey species may give up trying t ...
... It is common for predators of different species to all hunt some of the same prey species. The competition here is which predator species is best adapted to catch the limited supply of each prey species that they share. A species that cannot compete for a particular prey species may give up trying t ...
biodiversity - Teacher Notes
... Law) states that two species that compete for the exact same resources cannot stably coexist. Competition can lead to character displacement. If this occurs long enough you get speciation (different beak sizes eat different types of food) ...
... Law) states that two species that compete for the exact same resources cannot stably coexist. Competition can lead to character displacement. If this occurs long enough you get speciation (different beak sizes eat different types of food) ...
STAAR Science Tutorial 53 TEK 8.11B: Competition
... It is common for predators of different species to all hunt some of the same prey species. The competition here is which predator species is best adapted to catch the limited supply of each prey species that they share. A species that cannot compete for a particular prey species may give up trying t ...
... It is common for predators of different species to all hunt some of the same prey species. The competition here is which predator species is best adapted to catch the limited supply of each prey species that they share. A species that cannot compete for a particular prey species may give up trying t ...
Midterm Review Sheet
... 1. What is the “tragedy of the commons”? 2. Describe the two processes by which most water moves into the atmosphere. 3. Would all the different kinds of organisms in a pond be considered a population or a community? Explain. 4. For each of the levels of ecological organization, state whether it con ...
... 1. What is the “tragedy of the commons”? 2. Describe the two processes by which most water moves into the atmosphere. 3. Would all the different kinds of organisms in a pond be considered a population or a community? Explain. 4. For each of the levels of ecological organization, state whether it con ...
Intro to Ecology
... and fires, are density-independent because the effect on each individual does not depend on the number of other individuals present in the same area. ...
... and fires, are density-independent because the effect on each individual does not depend on the number of other individuals present in the same area. ...