PPT: Population Ecology
... Role of Family Planning • FP has been responsible for at least half of the drop in TFR’s in developing countries • Reduces the number of legal and illegal abortions each year • Decreased risk of death from pregnancy • Dev’ing: 10% in 1960s to 51% use • But, still 250-350M women want access but don’ ...
... Role of Family Planning • FP has been responsible for at least half of the drop in TFR’s in developing countries • Reduces the number of legal and illegal abortions each year • Decreased risk of death from pregnancy • Dev’ing: 10% in 1960s to 51% use • But, still 250-350M women want access but don’ ...
NOTES: Chapter 8.1 - How Populations Change In Size
... A species’ biotic potential is the fastest rate at which its populations can grow. This rate is limited by reproductive potential. ...
... A species’ biotic potential is the fastest rate at which its populations can grow. This rate is limited by reproductive potential. ...
population growth curve
... rate (# dying) are equal. G. A combination of all limiting factors is called the ...
... rate (# dying) are equal. G. A combination of all limiting factors is called the ...
Factors Affecting Human Population Size
... Fertility-is the number of births that occur to an individual woman in a population. Replacement-level Fertility —the number of children a couple must have in order to replace themselves in a population. Total Fertility Rate (TFR) —the number of children a woman will bear during her lifetime; ...
... Fertility-is the number of births that occur to an individual woman in a population. Replacement-level Fertility —the number of children a couple must have in order to replace themselves in a population. Total Fertility Rate (TFR) —the number of children a woman will bear during her lifetime; ...
Ecology 3 Population Ecology Ppt
... • Immigration vs. Population ↑ Emigration • A population may grow if individuals move into its range (Immigration). • A population may decrease if individuals move out of its range (Emigration). Deaths + Emigration = Population ↓ ...
... • Immigration vs. Population ↑ Emigration • A population may grow if individuals move into its range (Immigration). • A population may decrease if individuals move out of its range (Emigration). Deaths + Emigration = Population ↓ ...
Population Ecology - Capital High School
... A life history in which an organism spends most of its energy in growth and development, expend their energy in one large reproductive effort, and then die Many insects, annual plants, salmon, etc. ...
... A life history in which an organism spends most of its energy in growth and development, expend their energy in one large reproductive effort, and then die Many insects, annual plants, salmon, etc. ...
Populations
... 1. Genetic Drift: the reproductive success or failure of an individual in a small population ...
... 1. Genetic Drift: the reproductive success or failure of an individual in a small population ...
Chapter 5 (Populations) Test A
... 16. When an individual moves into a population from a different population, it is called ___________________ . 17. Zero population growth is a characteristic of ___________________ growth. 18. Under conditions of logistic growth, population size will rise and fall around an average point called a(an ...
... 16. When an individual moves into a population from a different population, it is called ___________________ . 17. Zero population growth is a characteristic of ___________________ growth. 18. Under conditions of logistic growth, population size will rise and fall around an average point called a(an ...
Population growth & regulation
... populations are vulnerable to extinction and loss, partly because there are just smaller numbers- but also because of some specific ways these populations behave. You cannot assume that you can go from a small population to a big one, just based on resource availability. Allee effects- are populatio ...
... populations are vulnerable to extinction and loss, partly because there are just smaller numbers- but also because of some specific ways these populations behave. You cannot assume that you can go from a small population to a big one, just based on resource availability. Allee effects- are populatio ...
Chapter 53: Population Ecology
... Chapter 53: Population Ecology The next three chapters on population, community, and ecosystem ecology provide the academic backbone for this unit on ecology. Each chapter is a different organizational level in ecology, starting with population ecology. Before beginning your study of each chapter, b ...
... Chapter 53: Population Ecology The next three chapters on population, community, and ecosystem ecology provide the academic backbone for this unit on ecology. Each chapter is a different organizational level in ecology, starting with population ecology. Before beginning your study of each chapter, b ...
Chapter 8: Population Ecology
... grass cover by over-grazing allowed sagebrush to move in and reduce the number of cattle that the land could support. 3. Technological, social, and cultural changes have extended the earth’s carrying capacity for human beings, for the time being. G. The density of a population may or may not affect ...
... grass cover by over-grazing allowed sagebrush to move in and reduce the number of cattle that the land could support. 3. Technological, social, and cultural changes have extended the earth’s carrying capacity for human beings, for the time being. G. The density of a population may or may not affect ...
Cohort life tables
... to produce fewer offspring, and the population will decline. Increasing population size decreases inbreeding and leads to a higher growth rate – a positive densitydependence – but only in the increase from very small population size that causes high inbreeding. Then negative density-dependence takes ...
... to produce fewer offspring, and the population will decline. Increasing population size decreases inbreeding and leads to a higher growth rate – a positive densitydependence – but only in the increase from very small population size that causes high inbreeding. Then negative density-dependence takes ...
Chapter 13animal pops
... Plateau in Arizona was estimated to be about 4,000 on 300,000 hectares of range. • The carrying capacity was estimated to be about 30,000 deer. • The Kaibab forest area was severely overgrazed by sheep, cattle, and horses and most of the tall, perennial grasses had been eliminated in the area. ...
... Plateau in Arizona was estimated to be about 4,000 on 300,000 hectares of range. • The carrying capacity was estimated to be about 30,000 deer. • The Kaibab forest area was severely overgrazed by sheep, cattle, and horses and most of the tall, perennial grasses had been eliminated in the area. ...
L x
... proportion of individuals surviving to the start of age interval x number dying during the period between one age class (x) and the next (x+1) mortality rate during age interval x to x+1 mean expectation of further life for individuals alive at the start of age interval x ...
... proportion of individuals surviving to the start of age interval x number dying during the period between one age class (x) and the next (x+1) mortality rate during age interval x to x+1 mean expectation of further life for individuals alive at the start of age interval x ...
Chapter 53 Notes - Rogue Community College
... • long life expectancies • high GNI PPP: –GNI PPP per capita is the gross national income in purchasing power parity divided by mid-year population. ...
... • long life expectancies • high GNI PPP: –GNI PPP per capita is the gross national income in purchasing power parity divided by mid-year population. ...
1. An organism can survive within a certain range of an abiotic factor
... c. The nutrient that is in the least supply and limits the population size. d. The limited range of abiotic factors in which an organism can survive. 12. Which of the following factors does NOT help determine biotic potential? a. Maximum number of offspring per birth. b. Number of times a species re ...
... c. The nutrient that is in the least supply and limits the population size. d. The limited range of abiotic factors in which an organism can survive. 12. Which of the following factors does NOT help determine biotic potential? a. Maximum number of offspring per birth. b. Number of times a species re ...
population size
... Larval (A) and adult (B) forms of the cabbage white butterfly, Pieris rapae. This insect was introduced to Quebec from Europe in the mid-1850s, and it is now found throughout much of North America. ...
... Larval (A) and adult (B) forms of the cabbage white butterfly, Pieris rapae. This insect was introduced to Quebec from Europe in the mid-1850s, and it is now found throughout much of North America. ...
07_PopBio
... through reproduction over a particular time period. - In many species, birthrate is influenced by the amount of food available - Sexually reproducing species must also find mates - In humans, expressed as # of babies/1000 individuals/year ...
... through reproduction over a particular time period. - In many species, birthrate is influenced by the amount of food available - Sexually reproducing species must also find mates - In humans, expressed as # of babies/1000 individuals/year ...
Ecosystem Change
... Growth Rate Death rate=# of individuals who die in a given time Growth rate (r)=birth rate-death rate r<0: population shrinks r>0: population grows r=0: population at zero population growth ...
... Growth Rate Death rate=# of individuals who die in a given time Growth rate (r)=birth rate-death rate r<0: population shrinks r>0: population grows r=0: population at zero population growth ...
Population Ecology
... Calculate Rates for Populations • 3 Rates that are looked at – Survivorship – number of individuals that reach the next year of life – Birth – number of individuals born within a designated time frame – Mortality – number of individuals that die each year ...
... Calculate Rates for Populations • 3 Rates that are looked at – Survivorship – number of individuals that reach the next year of life – Birth – number of individuals born within a designated time frame – Mortality – number of individuals that die each year ...
Document
... The _________________________________ of Earth for humans is uncertain Ecological Footprint The ecological footprint concept summarizes the _______________________ and ___________________ needed to sustain the people of a nation Is one measure of how close we are to the _______________________ ...
... The _________________________________ of Earth for humans is uncertain Ecological Footprint The ecological footprint concept summarizes the _______________________ and ___________________ needed to sustain the people of a nation Is one measure of how close we are to the _______________________ ...
Population Ecology
... Human Population= 6,596,469,500 (earlier today) Exponential growth since Industrial Revolution: better nutrition, medical care and sanitation. http://www.ibiblio.org/lunarbin/worldpop Growth rates ( r ) 1963: 2.2%(0.022), 1990: 1.6%, 2003: 1.3% (200,234/day), 2015: 1% ...
... Human Population= 6,596,469,500 (earlier today) Exponential growth since Industrial Revolution: better nutrition, medical care and sanitation. http://www.ibiblio.org/lunarbin/worldpop Growth rates ( r ) 1963: 2.2%(0.022), 1990: 1.6%, 2003: 1.3% (200,234/day), 2015: 1% ...