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... (considering the logarithm of body size relative to that of the autotroph). The coefficients μ and σγ represent the optimal trait ratio of predator to prey and the dietary breadth of the predator. The natural mortality is also assumed to be trait-mediated, Di = d0exp(-ri/4) (Peters, 1983). The inten ...
... (considering the logarithm of body size relative to that of the autotroph). The coefficients μ and σγ represent the optimal trait ratio of predator to prey and the dietary breadth of the predator. The natural mortality is also assumed to be trait-mediated, Di = d0exp(-ri/4) (Peters, 1983). The inten ...
Population-Ecology
... area inhabited by population of organisms • Population Density- number of individuals per unit area; varies depending on species and its ecosystem • Growth rate- change in number of organisms/size of population over time • Age structure diagrams ...
... area inhabited by population of organisms • Population Density- number of individuals per unit area; varies depending on species and its ecosystem • Growth rate- change in number of organisms/size of population over time • Age structure diagrams ...
Population - AP Subjects
... Type I- Death greatest at old age; ex. humans Type II- Death spread evenly throughout life; ex. squirrels Type III- Death greatest among the young; ex. fish, oysters, o Community Ecology Competition (ex. paramecium experiment [Fig 6.14]) Resource partitioning (when 2 species divide the res ...
... Type I- Death greatest at old age; ex. humans Type II- Death spread evenly throughout life; ex. squirrels Type III- Death greatest among the young; ex. fish, oysters, o Community Ecology Competition (ex. paramecium experiment [Fig 6.14]) Resource partitioning (when 2 species divide the res ...
1. What is a population? Distinguish between density
... environment can support over a relatively long time period • A “logistic population growth” model assumes the rate of population growth (r) slows as the population size reaches the carrying capacity of the environment • Some assumptions do not hold true for all populations Ex: Populations approach ...
... environment can support over a relatively long time period • A “logistic population growth” model assumes the rate of population growth (r) slows as the population size reaches the carrying capacity of the environment • Some assumptions do not hold true for all populations Ex: Populations approach ...
Chapter 4 Population Balance in an Ecosystem Population balance
... Population Balance in an Ecosystem Population balance is an equilibrium between births and death. Otherwise, the population would change and the ecosystem would not be in balance, in other words, not sustainable. Population Growth Depends on: ...
... Population Balance in an Ecosystem Population balance is an equilibrium between births and death. Otherwise, the population would change and the ecosystem would not be in balance, in other words, not sustainable. Population Growth Depends on: ...
Exponential Growth
... ! Type I: Survivorship is high until late in life ! Type II: Death rate varies little with age ! Type III: Death rate peaks early in life ...
... ! Type I: Survivorship is high until late in life ! Type II: Death rate varies little with age ! Type III: Death rate peaks early in life ...
Unit 5 Population Dynamics Expectations
... mechanism, symbiotic relationship, parasitic relationship) between different species. F3.2 describe the characteristics of a given population, such as its growth, density (e.g., fecundity, mortality), distribution, and minimum viable size. F3.3 explain factors such as carrying capacity, fecundity, d ...
... mechanism, symbiotic relationship, parasitic relationship) between different species. F3.2 describe the characteristics of a given population, such as its growth, density (e.g., fecundity, mortality), distribution, and minimum viable size. F3.3 explain factors such as carrying capacity, fecundity, d ...
Populations
... A population growth builds on the exponential model but accounts for the influence of limiting factors Carrying capacity: the no. of indiv. The environment can support over a long period of time. Logistic growth ...
... A population growth builds on the exponential model but accounts for the influence of limiting factors Carrying capacity: the no. of indiv. The environment can support over a long period of time. Logistic growth ...
Population ecology Definitions Characteristics of Populations Age
... given pop in a given environment • Each species has a characteristic curve. • Three types of curves are common in nature. ...
... given pop in a given environment • Each species has a characteristic curve. • Three types of curves are common in nature. ...
5-1 How Populations Grow
... 3 factors that affect population size 1. _________________________________ 2. _________________________________ 3. _________________________________ A pop will increase or decrease in size depending on how many individuals are added or removed from it. Population Growth Birth rate > death rate = ...
... 3 factors that affect population size 1. _________________________________ 2. _________________________________ 3. _________________________________ A pop will increase or decrease in size depending on how many individuals are added or removed from it. Population Growth Birth rate > death rate = ...
Populations Study Guide
... □ I can describe the growth of populations in terms of the mathematical relationship among carrying capacity, biotic potential, environmental resistance, and the number of individuals in the population (22.1, 22.2) ...
... □ I can describe the growth of populations in terms of the mathematical relationship among carrying capacity, biotic potential, environmental resistance, and the number of individuals in the population (22.1, 22.2) ...
Ecology Unit Review Questions
... What are the 4 characteristics of a population? Be able to explain each. How is the density of a population calculated? You will be asked to be able to calculate the population density of a specific population. What factors affect population growth or decline? Don’t forget to define words like immig ...
... What are the 4 characteristics of a population? Be able to explain each. How is the density of a population calculated? You will be asked to be able to calculate the population density of a specific population. What factors affect population growth or decline? Don’t forget to define words like immig ...
Human Ecology
... Resulting in a decrease in death rate, a longer life span, and an increased birth rate in some areas • NOTE: there has been a decrease in fertility rates in underdeveloped nations ...
... Resulting in a decrease in death rate, a longer life span, and an increased birth rate in some areas • NOTE: there has been a decrease in fertility rates in underdeveloped nations ...
Chapter 35
... a. G = growth rate (change in number of individuals over time) b. N = population size c. r = intrinsic rate of increase i. depends on the type of organism ii. an organisms maximum capacity to reproduce iii. constant 3. So growth rate (G) at any given time depends only on number of individuals in pop ...
... a. G = growth rate (change in number of individuals over time) b. N = population size c. r = intrinsic rate of increase i. depends on the type of organism ii. an organisms maximum capacity to reproduce iii. constant 3. So growth rate (G) at any given time depends only on number of individuals in pop ...
Population growth
... Biotic potential is influenced by: 1. Age at which the organism first reproduces 2. Frequency with which reproduction occurs 3. Average number of offspring produced each time 4. Length of organism’s reproductive life span 5. Death rate of individuals under ideal conditions • Biotic potential helps e ...
... Biotic potential is influenced by: 1. Age at which the organism first reproduces 2. Frequency with which reproduction occurs 3. Average number of offspring produced each time 4. Length of organism’s reproductive life span 5. Death rate of individuals under ideal conditions • Biotic potential helps e ...
Maximum population
... Provides insight into the environmental associations & social interactions of individuals in population ...
... Provides insight into the environmental associations & social interactions of individuals in population ...
Welcome to Class
... Population Characteristics • Population Density – # of organisms per area • Dispersion – pattern of spacing of a population within an area – Based on available resources (food) ...
... Population Characteristics • Population Density – # of organisms per area • Dispersion – pattern of spacing of a population within an area – Based on available resources (food) ...
Populations
... Purple Loosestrife • Plant brought to US from Europe for gardens • Escaped to wild • Invades wetlands • Outcompeting native species. ...
... Purple Loosestrife • Plant brought to US from Europe for gardens • Escaped to wild • Invades wetlands • Outcompeting native species. ...
Understanding Populations
... population can produce Some species have a higher reproductive rate than others Biotic potential Fastest rate that a population can grow Reproductive potential increases when individuals: Produce more offspring at a time Reproduce more often Reproduce earlier in life ...
... population can produce Some species have a higher reproductive rate than others Biotic potential Fastest rate that a population can grow Reproductive potential increases when individuals: Produce more offspring at a time Reproduce more often Reproduce earlier in life ...
Aim What is Carrying Capacity ?
... A population of chipmunks migrated to an environment where they had little competition. Their population quickly increased but eventually stabilized as shown in the graph. Which statement best explains why the population stabilized? 1.Interbreeding between members of the population increased the mu ...
... A population of chipmunks migrated to an environment where they had little competition. Their population quickly increased but eventually stabilized as shown in the graph. Which statement best explains why the population stabilized? 1.Interbreeding between members of the population increased the mu ...
Population Dynamics
... All living things need resources such as water, energy and living space. ...
... All living things need resources such as water, energy and living space. ...
Indicator species
... J-shaped curve- when graphed the exponential growth model looks like this. ...
... J-shaped curve- when graphed the exponential growth model looks like this. ...
Population Ecology
... in a given area or volume • count all the individuals in a population • estimate by sampling ...
... in a given area or volume • count all the individuals in a population • estimate by sampling ...