Population growth models - Powerpoint for Oct. 2.
... population growth must be constrained - two types of constraints 1) density independent constraints - growth constraints that are not effected by population size - usually abiotic - weather, storms, volcanos 2) density dependent constraints - growth constraints whose effects change as population siz ...
... population growth must be constrained - two types of constraints 1) density independent constraints - growth constraints that are not effected by population size - usually abiotic - weather, storms, volcanos 2) density dependent constraints - growth constraints whose effects change as population siz ...
Population Size
... Features of Populations 1 Population size: the total number of organisms in the population. Population density: the number of organisms per unit area. Population distribution: the location of individuals within a specific area. ...
... Features of Populations 1 Population size: the total number of organisms in the population. Population density: the number of organisms per unit area. Population distribution: the location of individuals within a specific area. ...
Population pp
... How population size changes Size depends on births, immigration, deaths, emigration and migrations Zero population growth is a near balance between all the positive and negative factors ...
... How population size changes Size depends on births, immigration, deaths, emigration and migrations Zero population growth is a near balance between all the positive and negative factors ...
Population Growth
... the growth of a population, like drought, scarce resources, scarce space, diseases, predation and competition. ...
... the growth of a population, like drought, scarce resources, scarce space, diseases, predation and competition. ...
Populations – Chapter 5
... Factors, are present An area can only maintain so much and remain stable. ...
... Factors, are present An area can only maintain so much and remain stable. ...
carrying capacity
... Limited resources (food, space, light for photosynthesizers) Competition Predation - increased prey means increased predation Parasitism - spread more easily in high density pops ...
... Limited resources (food, space, light for photosynthesizers) Competition Predation - increased prey means increased predation Parasitism - spread more easily in high density pops ...
Document
... 1. Describe the various types of population distribution patterns that can occur in nature and comment on which is most common and why. (clumped, uniform, and random) 2. Define birth rate, death rate, immigration, and emigration. Write an equation to mathematically describe the relationship between ...
... 1. Describe the various types of population distribution patterns that can occur in nature and comment on which is most common and why. (clumped, uniform, and random) 2. Define birth rate, death rate, immigration, and emigration. Write an equation to mathematically describe the relationship between ...
Population Ecology
... Density-dependent factors: Biotic factors in the environment that have an increasing effect as population size increases (disease, competition, parasites) ...
... Density-dependent factors: Biotic factors in the environment that have an increasing effect as population size increases (disease, competition, parasites) ...
Three Key Features of Populations Size
... How Are Populations Measured? • Population density = number of individuals in a given area or volume • Count all the individuals in a population • Estimate by sampling • Mark-Recapture Method ...
... How Are Populations Measured? • Population density = number of individuals in a given area or volume • Count all the individuals in a population • Estimate by sampling • Mark-Recapture Method ...
Document
... Density-dependent factors: Biotic factors in the environment that have an increasing effect as population size increases (disease, competition, parasites) ...
... Density-dependent factors: Biotic factors in the environment that have an increasing effect as population size increases (disease, competition, parasites) ...
Population Ecology PPT
... Density-dependent factors: Biotic factors in the environment that have an increasing effect as population size increases (disease, competition, parasites) ...
... Density-dependent factors: Biotic factors in the environment that have an increasing effect as population size increases (disease, competition, parasites) ...
Population Ecology PPT
... Density-dependent factors: Biotic factors in the environment that have an increasing effect as population size increases (disease, competition, parasites) ...
... Density-dependent factors: Biotic factors in the environment that have an increasing effect as population size increases (disease, competition, parasites) ...
Population ecology
... allowance this month: You may have $5 a week OR you will get a penny on the 1st and each day afterward, they will double the amount from the day before. Which do you choose, and why? ...
... allowance this month: You may have $5 a week OR you will get a penny on the 1st and each day afterward, they will double the amount from the day before. Which do you choose, and why? ...
Name: Period: ______ Population Ecology – 53.4
... 2. Name three variables that help to form the life history of a species. ...
... 2. Name three variables that help to form the life history of a species. ...
5-2
... DDLF – limiting factor that depends on population size These factors become limiting only when the population density reaches a certain level Usually occurs when population is large and dense Ex: competition, predation, parasitism, disease ...
... DDLF – limiting factor that depends on population size These factors become limiting only when the population density reaches a certain level Usually occurs when population is large and dense Ex: competition, predation, parasitism, disease ...
File
... starts slow then increases rapidly. Logistic Growth (aka “S-shaped” curve) occurs when population growth reaches its carrying capacity due to limiting factors and levels off. ...
... starts slow then increases rapidly. Logistic Growth (aka “S-shaped” curve) occurs when population growth reaches its carrying capacity due to limiting factors and levels off. ...
Speed round!
... MAXIMUM GROWTH RATE IS INFLUENCED BY WHAT CONDITIONS? • Age of reproduction • Number of young per reproductive effort ...
... MAXIMUM GROWTH RATE IS INFLUENCED BY WHAT CONDITIONS? • Age of reproduction • Number of young per reproductive effort ...
POPULATION GROWTH What determines the size of a population
... They can be abiotic or biotic. FOOD, SPACE and other important resources (sunlight, water, nutrients in the soil) DECREASE because they are shared between more organisms increases death rate decreases population. COMPETITION between organisms with the same niche increases increases death rate ...
... They can be abiotic or biotic. FOOD, SPACE and other important resources (sunlight, water, nutrients in the soil) DECREASE because they are shared between more organisms increases death rate decreases population. COMPETITION between organisms with the same niche increases increases death rate ...
Logistic growth curve
... – Species doubles per unit time – No limiting factors: nutrients, oxygen, space in ample supply ...
... – Species doubles per unit time – No limiting factors: nutrients, oxygen, space in ample supply ...
What is population ecology? - Mrs. Cindy Williams Biology website
... • What affect population ecology? • density • age • distribution • growth • competition • predation ...
... • What affect population ecology? • density • age • distribution • growth • competition • predation ...
Characteristics of population growth pp
... • While other species produce few offspring with most surviving to maturity (Type I). • This indicates that there is an evolutionary trade-off between energy invested to reproduction versus energy invested to survival. ...
... • While other species produce few offspring with most surviving to maturity (Type I). • This indicates that there is an evolutionary trade-off between energy invested to reproduction versus energy invested to survival. ...
Ecology Intro - Lake Stevens High School
... Pillbug lab prep is tomorrow…bring bugs by Thursday. You will need your comp lab notebook for tomorrow. You will get reading questions for Chapter 51 today. These will be ...
... Pillbug lab prep is tomorrow…bring bugs by Thursday. You will need your comp lab notebook for tomorrow. You will get reading questions for Chapter 51 today. These will be ...