Study sets matching "term:logistic+growth = a model describing population growth that levels off as population size approaches carrying capacity"

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Study sets matching "term:logistic+growth = a model describing population growth that levels off as population size approaches carrying capacity"

8 terms
Logistic Population Growth
b
dN/dt=rN
Nt=N0e^rt
potential
Nt=R0^t(N0)... The equation above would be useful in estimating…
the differential form (to find change in population size)
the integral form (to find population size)... -where N0= number…
populations of all organisms have the ________ to grow expone…
b
Nt=R0^t(N0)... The equation above would be useful in estimating…
dN/dt=rN
the differential form (to find change in population size)
19 terms
4.3 Population Growth
Survivorship curve
Immigration
Emigration
Exponential growth
Graph that shows how the likelihood of death varies with age.
The arrival of individuals from outside a given area.
The departure of individuals from a given area.
When a population increases by a fixed percentage each year.
Survivorship curve
Graph that shows how the likelihood of death varies with age.
Immigration
The arrival of individuals from outside a given area.
9 terms
Exponential and Logistic Growth Models
Logistic Curve
In a logistic growth curve, what does…
Exponential Growth Curve
carrying capacity
The carrying capacity
The maximum population size that a particular environment can…
Logistic Curve
In a logistic growth curve, what does…
The carrying capacity
24 terms
Population Growth, Chapter 5-Review
Three factors that affect the size (de…
population growth occurs when
Factors that cause population growth t…
competition
1. Birth rate... 2. Death rate... 3. Immigration and Emigration
there is an abundant amount of food, space, and resources wit…
1. competition 2. predation ... 3. parasitism 4. disease
when the population becomes crowded, organisms compete with o…
Three factors that affect the size (de…
1. Birth rate... 2. Death rate... 3. Immigration and Emigration
population growth occurs when
there is an abundant amount of food, space, and resources wit…
15 terms
Population Ecology
population
carrying capacity
limiting factor
density dependent factor
group of individuals of the same species living in a particul…
largest number of individuals of a population that a environm…
an environmental factor that prevents a population from incre…
limiting factor that depends on population size
population
group of individuals of the same species living in a particul…
carrying capacity
largest number of individuals of a population that a environm…
19 terms
Chapter 5-Review Growth of Populations, Population
factors affecting population
immigration
emigration
exponential growth
birth rate, death rate, immigration, and emigration
individuals move into its range from elsewhere
individuals move out of a range
the larger a population gets, the faster it grows
factors affecting population
birth rate, death rate, immigration, and emigration
immigration
individuals move into its range from elsewhere
Population growth
intrinsic growth rate
r= birthrate - death rate
exponential growth model
future population size
the highest possible per capita growth rate for a population
intrinsic growth rate equation
a model of population growth in which the population increase…
Nt
intrinsic growth rate
the highest possible per capita growth rate for a population
r= birthrate - death rate
intrinsic growth rate equation
5 terms
Chapter 9: Population Growth
A differential equation that describes…
Background of exponential growth
This model deals with limited resource…
The logistic growth model is density-_…
Exponential growth model
Increasing population size = immigration and births... Decreasin…
Logistic growth model
Dependent (relies on the population size)
A differential equation that describes…
Exponential growth model
Background of exponential growth
Increasing population size = immigration and births... Decreasin…
Chapter 5 Population Growth
Population growth is affected by...
Exponential growth
Exponential growth happens when..
Logistic growth
1. Births... 2. Deaths... 3. Immigration (individuals move into are…
If births + immigration > deaths + emigration
Population has unlimited resources, "ideal conditions", but i…
Begins as exponential growth until reality strikes and resour…
Population growth is affected by...
1. Births... 2. Deaths... 3. Immigration (individuals move into are…
Exponential growth
If births + immigration > deaths + emigration
Population Growth
B
b
D
d
# of births (bN)
per capita birth rate
death rate (dN)
per capita death rate
B
# of births (bN)
b
per capita birth rate
10 terms
population growth patterns 14.4
Exponential Growth
Logistic Growth
Carrying Capacity
Population Crash
growth pattern in which the individuals in a population repro…
A model describing population growth that levels off as popul…
largest number of individuals of a population that a environm…
a sudden population decline caused by predation, waste accumu…
Exponential Growth
growth pattern in which the individuals in a population repro…
Logistic Growth
A model describing population growth that levels off as popul…
Population Growth
population
community
population density
exponential growth
a collection of individuals of all one species living in a sp…
a collection of several populations interacting with one anot…
the number of organisms of a population living in a specified…
there is plenty of food and space and a population grows rapi…
population
a collection of individuals of all one species living in a sp…
community
a collection of several populations interacting with one anot…
9 terms
14.4 Population Growth Patterns
immigration
emigration
exponential growth
logistic growth
the movement of individuals into a population from another po…
the movement of individuals out of a population and into anot…
a rapid population increase due to an abundance of resources
a population begins with a period of slow growth followed by…
immigration
the movement of individuals into a population from another po…
emigration
the movement of individuals out of a population and into anot…
24 terms
Test 2: Population Growth
discrete annual growth
What are the geometric growth equations?
A population has N=100 individuals at…
If a population grows continuously, N[…
populations that grow in pulses
N[t] = N[o] λ^t... N[t+1] = N[t] λ... [subscript]
N5=100 (1.05^2)... N5=110
r= the per capita rate of increase (intrinsic rate of increas…
discrete annual growth
populations that grow in pulses
What are the geometric growth equations?
N[t] = N[o] λ^t... N[t+1] = N[t] λ... [subscript]
14 terms
Levels in the biosphere & population growth bio
Exponential
Exponential
Exponential
Logistic
J curve
No population limits
Ideal conditions
S curve
Exponential
J curve
Exponential
No population limits
49 terms
Chapter 11- Population growth
Larvae and mature adult has different…
Many invertebrates are small and have…
R0 - the net reproductive rate of fema…
r ( per capita rate of increase)
Larvae may not be able to travel very far, but mature adults…
they solve this problem by having at least two life stages.
the average number of offspring reproduced by a female over h…
r= ln(R0)/T, where T = generation time... can be interpreted as…
Larvae and mature adult has different…
Larvae may not be able to travel very far, but mature adults…
Many invertebrates are small and have…
they solve this problem by having at least two life stages.
20 terms
Population Growth Patterns
Types of Growth
Predator-Prey Interactions
Population Growth Rate
Birth Rates
Exponential, Logistic
Predator: an animal who eats another... Prey: an animal hunted o…
The rate of growth in an area
The rate of births in an area
Types of Growth
Exponential, Logistic
Predator-Prey Interactions
Predator: an animal who eats another... Prey: an animal hunted o…
Population Growth Patterns
Immigration
Emigration
exponential growth
logistic growth
the movement of individuals into a population from another po…
the movement of individuals out of a population and into anot…
occurs when a population size increases dramatically over a p…
a population begins with a period of slow growth followed by…
Immigration
the movement of individuals into a population from another po…
Emigration
the movement of individuals out of a population and into anot…
9 terms
Population Growth Patterns
immigration
emigration
exponential growth
logistic growth
the movement of individuals into a population from another po…
the movement of individuals out of a population from another…
occurs when a population size increases dramatically over a p…
a population begins with a period of slow growth followed by…
immigration
the movement of individuals into a population from another po…
emigration
the movement of individuals out of a population from another…
population growth patterns
immigration
emigration
exponential growth
logistic growth
the movement of individuals into a population from another po…
the movement of individuals out of a population and into anot…
when a population size increases dramatically over a period o…
a population begins with a period of slow growth followed by…
immigration
the movement of individuals into a population from another po…
emigration
the movement of individuals out of a population and into anot…
Concept 53.4 The logistic model describes how a population grows more slowly as it nears its carrying capacity
Carrying capacity (K)
Logistic population growth
Logistic growth model
small, small
the maximum population size in the environment can support
the per capita rate of increase declines as carrying capacity…
delta N/ delta t=r(max)N*(K-N)/K
when N in large compared to K, then (K-N)/K is ________, and…
Carrying capacity (K)
the maximum population size in the environment can support
Logistic population growth
the per capita rate of increase declines as carrying capacity…
Population Growth Patterns
immigration
emigration
exponential growth
logistic growth
the movement of individuals into a population from another po…
the movement of individuals out of a population and into anot…
occurs when a population size increases dramatically over a p…
a population begins with a period of slow growth followed by…
immigration
the movement of individuals into a population from another po…
emigration
the movement of individuals out of a population and into anot…
13 terms
APES Unit 2: Population Growth
Population density
Random dispersion
Population dispersion clumping
population dispersion uniform
the number of individuals per unit area
populations to be found randomly about their habitat. In immo…
populations to be found in tight clusters, dispersed across a…
populations to be found evenly distributed about their habita…
Population density
the number of individuals per unit area
Random dispersion
populations to be found randomly about their habitat. In immo…
11 terms
Population Dynamics
population size
birth rate
death rate
immigration
number of individuals of the same species living in one area
rate at which new individual organisms are born, increases po…
rate at which individual organisms die, reduces population size
movement of individuals INTO a population, increases populati…
population size
number of individuals of the same species living in one area
birth rate
rate at which new individual organisms are born, increases po…
Population Growth
Demography
Growth Rate
Intrinsic Growth Rate
Exponential Growth Model
study of populations
the number of new individuals that are produced minus those w…
the highest possible per capita growth rate for a population
a model of population growth in which the population increase…
Demography
study of populations
Growth Rate
the number of new individuals that are produced minus those w…
Population Growth
Population Growth
Model Parameter:
Assumptions:
Exponential Growth Model... Assumptions
Nt= # + Birth - Death + Immigration - Emigration
Variables we need to know to be able to make predictions
Conditions we assume are met to simplify the model
- Closed population ... - Birth rates and death death rates are…
Population Growth
Nt= # + Birth - Death + Immigration - Emigration
Model Parameter:
Variables we need to know to be able to make predictions
21 terms
Chapter 12 Population Growth
demography
growth rate
intrinsic growth rate (r)
exponential growth model
the study of populations
in a population, the number of new individuals that are produ…
the highest possible per capita growth rate for a population
a model of population growth in which the population increase…
demography
the study of populations
growth rate
in a population, the number of new individuals that are produ…
13 terms
POPULATION ECOLOGY: POPULATION GROWTH
population density
random dispersion
clumping dispersion
uniform dispersion
the number of individuals of a population that inhabit a cert…
describing a dispersion pattern in which individuals are spac…
individuals "flock" together; most common dispersion pattern
even spacing of individuals of the same species within an area
population density
the number of individuals of a population that inhabit a cert…
random dispersion
describing a dispersion pattern in which individuals are spac…
10 terms
Ecology population dispersion
Dispersion
example of dispersion
what are the 3 main types of dispersion?
Clumped Distribution
pattern of spacing among individuals within a certain area ... (…
birds on a line will disperse withing pecking distance, to be…
1. Clumped... 2. Uniform... 3. Random distribution
pattern: individuals have a higher probability of being found…
Dispersion
pattern of spacing among individuals within a certain area ... (…
example of dispersion
birds on a line will disperse withing pecking distance, to be…
13 terms
Population Growth
All the individuals of a species that…
the statistic sway of populations make…
what are 3 key features of population
measurement of population per unit are…
population
demography
size, density, & dispersion
density
All the individuals of a species that…
population
the statistic sway of populations make…
demography
21 terms
Ecology Ch 9 population dispersion
Dispersion
example of dispersion
what are the 3 main types of dispersion?
Clumped Distribution
pattern of spacing among individuals within a certain area ... (…
birds on a line will disperse withing pecking distance, to be…
1. Clumped... 2. Uniform... 3. Random distribution
pattern: individuals have a higher probability of being found…
Dispersion
pattern of spacing among individuals within a certain area ... (…
example of dispersion
birds on a line will disperse withing pecking distance, to be…
Population Growth
population density
random dispersion
clumping dispersion
uniform dispersion
Number of individuals per unit area
individuals are distributed unpredictably within a uniform ha…
Most common pattern; individuals flock together, certain plan…
The pattern in which individuals are equally spaced throughou…
population density
Number of individuals per unit area
random dispersion
individuals are distributed unpredictably within a uniform ha…
12 terms
Ecology Ch. 4: Population Growth
Charles Darwin
Thomas Malthus
Exponential population growth
Logarithmic plot
English biologist who published "The Origin of Species" in 18…
An economist whose essay on the principles of population emph…
Population expansion characterized by an accelerating growth…
A graph with at least one axis scaled as exponential values.…
Charles Darwin
English biologist who published "The Origin of Species" in 18…
Thomas Malthus
An economist whose essay on the principles of population emph…
11 terms
Population Ecology
population
carrying capacity
limiting factor
density dependent factor
group of individuals of the same species living in a particul…
largest number of individuals of a population that a environm…
an environmental factor that prevents a population from incre…
limiting factor that depends on population size
population
group of individuals of the same species living in a particul…
carrying capacity
largest number of individuals of a population that a environm…
Population Growth and Regulation
demography
growth rate
intrinsic growth rate (r)
exponential growth model
the study of populations
in a population, the number of new individuals that are produ…
the highest possible per capita growth rate for a population
a model of population growth in which the population increase…
demography
the study of populations
growth rate
in a population, the number of new individuals that are produ…
Chapter 12 Population growth and regulation
Demography
Growth rate
Intrinsic growth rate (r)
Exponential growth model
The study of populations
In a population, the number of new individuals that are produ…
The highest population per capita growth rate for a population
a model of population growth rate in which the population inc…
Demography
The study of populations
Growth rate
In a population, the number of new individuals that are produ…
24 terms
ISU Population and Growth
Population size
Population density
Quadrat
Distribution patterns (clumped, unifor…
Number of individual species living within a specific area
Number of individuals per unit of area
An area of specific size used for sampling a population
Patterns in which a population is distributed or spread
Population size
Number of individual species living within a specific area
Population density
Number of individuals per unit of area
11 terms
Population Ecology
population
carrying capacity
limiting factor
density dependent factor
group of individuals of the same species living in a particul…
largest number of individuals of a population that a environm…
an environmental factor that prevents a population from incre…
limiting factor that depends on population size
population
group of individuals of the same species living in a particul…
carrying capacity
largest number of individuals of a population that a environm…
22 terms
CH. 12 - Population Growth
Demography
Growth Rate
Intrinsic Growth Rate (r)
Exponential Growth Rate
the study of populations
in a population, the number of new individuals that are produ…
the highest possible per capita growth rate for a population
a model of population growth in which the population increase…
Demography
the study of populations
Growth Rate
in a population, the number of new individuals that are produ…
Chapter 4 Section 3Population Growth
Population Growth Rate
Mortality
Survivorship Curves
Birth Rate
Is determined by births, deaths, immigration, and emigration…
The rate at which individuals die.
Show how individuals of different ages have different probabi…
Birth rate is expressed as number of births per 1000 people p…
Population Growth Rate
Is determined by births, deaths, immigration, and emigration…
Mortality
The rate at which individuals die.
16 terms
Population Growth and Regulation
population size
population density
global scale
local scale
measured for species which have clear boundaries or larger or…
measured for species which do not have clear boundaries and/o…
closed system, subject to changes via births and deaths
open system, subject to changes via births and deaths, and im…
population size
measured for species which have clear boundaries or larger or…
population density
measured for species which do not have clear boundaries and/o…
69 terms
Plant ecology - population growth models
Thomas Robert Malthus was an English c…
because his essay on population discus…
"Population when unchecked, increases…
double
Who was Malthus?
Why is Malthus important?
A famous saying by Malthus
population when unchecked will ________itself in every twenty…
Thomas Robert Malthus was an English c…
Who was Malthus?
because his essay on population discus…
Why is Malthus important?
Bis2B Lecture 7 Population Growth
Population
Population Sampling
Density
Mark-Recapture Method
A group of individuals that belong to the same species and li…
Difficult to count EVERY individual in a population so,... -Samp…
Number of individual per area
1)Capture,mark and release (M) individuals... 2)Recapture anothe…
Population
A group of individuals that belong to the same species and li…
Population Sampling
Difficult to count EVERY individual in a population so,... -Samp…
15 terms
Population and Community Ecology 2
population density
population size
population distribution
sex ratio
Number of individuals per unit area
the number of individuals in a population
how population is spread out in an area
The number of males per 100 females in the population.
population density
Number of individuals per unit area
population size
the number of individuals in a population
population and growth regulation quiz
A population is defined as a group of…
Which of the following is an assumptio…
Some time after the Eurasian species c…
quiz question:... Which is likely to fol…
of the same species occupying a particular space at a particu…
- reproduction can (and does) occur continuously... - population…
...
II & III only
A population is defined as a group of…
of the same species occupying a particular space at a particu…
Which of the following is an assumptio…
- reproduction can (and does) occur continuously... - population…
18 terms
Module 2: Population Growth
exponential growth
limiting factors
carrying capacity
more-developed countries
the growth of any quantity at a fixed percentage per unit of…
single factor that limits the growth, abundance, or distribut…
maximum population of a given species that an area of land or…
highly industrialized countries where the average level of in…
exponential growth
the growth of any quantity at a fixed percentage per unit of…
limiting factors
single factor that limits the growth, abundance, or distribut…
10 terms
Ecology Chapter 11 Population Growth
Carrying Capactiy (K)
chi-square (X^2)
density-dependent factor
density-independent factor
the maximum population of a species that a particular ecosyst…
a statistic used to measure how much a sample distribution di…
biotic factors in the environment, such as disease and compet…
abiotic factors in the environment, such as floods and extrem…
Carrying Capactiy (K)
the maximum population of a species that a particular ecosyst…
chi-square (X^2)
a statistic used to measure how much a sample distribution di…
27 terms
Ecology- Ch.12 Population Growth & Regulation
Ch.12 Concepts
Demography
Intrinsic growth rate (r):
Growth rate
-Under ideal conditions, populations can grow rapidly.... -Popul…
The study of populations.... In the 19th century, Charles Darwi…
The highest possible per capita growth rate for a population.…
In a population, the number of new individuals that are produ…
Ch.12 Concepts
-Under ideal conditions, populations can grow rapidly.... -Popul…
Demography
The study of populations.... In the 19th century, Charles Darwi…
22.2 Measuring and Modelling Population Change
Natality (n)
Mortality (m)
Immigration (i)
Emigration (e)
The number of births per unit of time.
The number of deaths per unit of time.
The number of individuals that move into an existing populati…
The number of individuals that move away from an existing pop…
Natality (n)
The number of births per unit of time.
Mortality (m)
The number of deaths per unit of time.
Population Growth
carrying capacity
limiting factors
density dependent factors
density independent factors
the maximum number of individuals of a particular species tha…
factors that controls the growth of a population
operate strongly only when population density reaches a certa…
affect all populations in similar ways, regardless of populat…
carrying capacity
the maximum number of individuals of a particular species tha…
limiting factors
factors that controls the growth of a population
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