An ecosystem is made up of the living community and its nonliving
... same area at the same time. A community is all of the populations that live and interact in the same area. When resources are plentiful, a population generally grows. An environmental factor that causes the population to decrease is called a limiting factor. Food, water, space, and weather condition ...
... same area at the same time. A community is all of the populations that live and interact in the same area. When resources are plentiful, a population generally grows. An environmental factor that causes the population to decrease is called a limiting factor. Food, water, space, and weather condition ...
A population and its sustainability
... 1 J-shaped exponential growth curve 2 S-shaped logistic grouth curve carring capacity K - the maximum number of a population an environment can support over a long time 3 Periodic curve (prey – predator) ...
... 1 J-shaped exponential growth curve 2 S-shaped logistic grouth curve carring capacity K - the maximum number of a population an environment can support over a long time 3 Periodic curve (prey – predator) ...
No Population Can Grow Indefinitely: J-Curves and
... • Rabbits are sexually mature at 5 months of age. Their gestation period averages 31 days and the average litter size is 6 offspring. It is possible to have 8 litters per year. If we start with 1 fertile female and assume that 0 die and 50 percent of the litter is female, at the end of twelve months ...
... • Rabbits are sexually mature at 5 months of age. Their gestation period averages 31 days and the average litter size is 6 offspring. It is possible to have 8 litters per year. If we start with 1 fertile female and assume that 0 die and 50 percent of the litter is female, at the end of twelve months ...
Chapter 8
... reproduction. Postreproductive age: those too old to reproduce. ( majority here = declining pop) Even distribution in age structure = stable pop ...
... reproduction. Postreproductive age: those too old to reproduce. ( majority here = declining pop) Even distribution in age structure = stable pop ...
Quiz study guide
... Community- all different populations that live together in an area Ecosystem- community of organisms that live in an area and their non-living surroundings Biome- a group of ecosystems with similar climates and organisms Biosphere- all biomes/area of life on Earth Carrying capacity- the maximum amo ...
... Community- all different populations that live together in an area Ecosystem- community of organisms that live in an area and their non-living surroundings Biome- a group of ecosystems with similar climates and organisms Biosphere- all biomes/area of life on Earth Carrying capacity- the maximum amo ...
Introduction to fish population dynamics and stock assessment
... population size or biomass. The production rate can be highly variable owing to environmental fluctuations, predation, and other biological interactions with other populations On average, production decreases at low and high population sizes, and biomass decreases as the amount of fishing effort inc ...
... population size or biomass. The production rate can be highly variable owing to environmental fluctuations, predation, and other biological interactions with other populations On average, production decreases at low and high population sizes, and biomass decreases as the amount of fishing effort inc ...
FriedlandVocabCh10
... forests: Land dominated by trees and other woody vegetation and sometimes used for commercial logging clear-cutting: A method of harvesting trees that involves removing all or almost all of the trees within an area selective cutting: The method of harvesting trees that involves the removal of single ...
... forests: Land dominated by trees and other woody vegetation and sometimes used for commercial logging clear-cutting: A method of harvesting trees that involves removing all or almost all of the trees within an area selective cutting: The method of harvesting trees that involves the removal of single ...
Factors Affecting Population Change
... Struggle for survival includes factors like competition, predation, disease, and other biological effects ...
... Struggle for survival includes factors like competition, predation, disease, and other biological effects ...
Chapter 5 Review
... 16) Draw a graph showing logistic growth and label the x-axis, y-axis and show the carrying capacity and label it. ...
... 16) Draw a graph showing logistic growth and label the x-axis, y-axis and show the carrying capacity and label it. ...
Chapter 26
... 1. The world population reached 6 billion in 1999. 2. The annual rate of increase averaged 1.3 percent. B. How did the human population grow to such large numbers? 1. Humans expanded into new habitats and climatic zones. 2. Agriculture increased the carrying capacity of the land to support humans an ...
... 1. The world population reached 6 billion in 1999. 2. The annual rate of increase averaged 1.3 percent. B. How did the human population grow to such large numbers? 1. Humans expanded into new habitats and climatic zones. 2. Agriculture increased the carrying capacity of the land to support humans an ...
Population Dynamics
... ! Population Growth: the increase of a population with time – Under Ideal conditions the size of a population will increase indefinitely showing a growth curve like a “J” ! Ideal Conditions: unlimited food, absence of ...
... ! Population Growth: the increase of a population with time – Under Ideal conditions the size of a population will increase indefinitely showing a growth curve like a “J” ! Ideal Conditions: unlimited food, absence of ...
number of individuals - Trinity Regional School
... 4. As niche is further established, growth continues to slow. Birthrate? Deathrate? 5. Steady state. Average growth rate=0 0 means there will be some fluctuation but not a continual rise as seen in step 2. BR begins to equal DR. ...
... 4. As niche is further established, growth continues to slow. Birthrate? Deathrate? 5. Steady state. Average growth rate=0 0 means there will be some fluctuation but not a continual rise as seen in step 2. BR begins to equal DR. ...
Ch. 36 Population Ecology
... 36.3 Describe and compare the exponential and logistic population growth models, illustrating both with examples. Explain the concept of carrying capacity. ...
... 36.3 Describe and compare the exponential and logistic population growth models, illustrating both with examples. Explain the concept of carrying capacity. ...
Population
... candidates should • carry out experimental and investigative activities, including appropriate risk management • consider ethical issues arising when carrying out fieldwork, particularly those relating to the organisms involved and their environment • analyse and interpret data relating to the distr ...
... candidates should • carry out experimental and investigative activities, including appropriate risk management • consider ethical issues arising when carrying out fieldwork, particularly those relating to the organisms involved and their environment • analyse and interpret data relating to the distr ...
Chapter 6 PowerPoint
... Such change can be described by modifying our previous formula to: dN/dt=rN The d is for delta which represents change. Thus the formula would read: “the change in the population (dn) per change in time (dt) is equal to the rate of change (r) times the population size (N).” This is a simple mathemat ...
... Such change can be described by modifying our previous formula to: dN/dt=rN The d is for delta which represents change. Thus the formula would read: “the change in the population (dn) per change in time (dt) is equal to the rate of change (r) times the population size (N).” This is a simple mathemat ...
Population Biology Chapter 4 Section 1
... 1. Emigration – moving away from a population 2. Immigration – moving into a population ...
... 1. Emigration – moving away from a population 2. Immigration – moving into a population ...
Chapter 8
... i. The maximum rate that a population could increase under ideal conditions is its intrinsic rate of increase (biotic potential) 1. Several factors influence biotic potential a. Age that reproduction begins b. Fraction of the life span during which an individual can reproduce c. Number of reproducti ...
... i. The maximum rate that a population could increase under ideal conditions is its intrinsic rate of increase (biotic potential) 1. Several factors influence biotic potential a. Age that reproduction begins b. Fraction of the life span during which an individual can reproduce c. Number of reproducti ...
Ch 8 outline
... i. The maximum rate that a population could increase under ideal conditions is its intrinsic rate of increase (biotic potential) 1. Several factors influence biotic potential a. Age that reproduction begins b. Fraction of the life span during which an individual can reproduce c. Number of reproducti ...
... i. The maximum rate that a population could increase under ideal conditions is its intrinsic rate of increase (biotic potential) 1. Several factors influence biotic potential a. Age that reproduction begins b. Fraction of the life span during which an individual can reproduce c. Number of reproducti ...
Section 14.3: Population Density and Distribution
... • How is the number of individuals that live in a defined area described? • How do geographic dispersions of a population show how individuals in a population are spaced? • How are density and geographic dispersal characteristics of a population? • Describe the three basic types of survivorship curv ...
... • How is the number of individuals that live in a defined area described? • How do geographic dispersions of a population show how individuals in a population are spaced? • How are density and geographic dispersal characteristics of a population? • Describe the three basic types of survivorship curv ...
Chapter 6 – Population and Community Ecology
... 23. Describe the process of primary succession. Give the meaning for the terms: early-succession, mid-succession, and latesuccession. Identify the reproductive strategies (“r” or “K”) for some of the organisms found at each stage. ...
... 23. Describe the process of primary succession. Give the meaning for the terms: early-succession, mid-succession, and latesuccession. Identify the reproductive strategies (“r” or “K”) for some of the organisms found at each stage. ...
Biology 30 Chapter 20 - Vegreville Composite High
... reaching reproductive age Procreation – the number of times per year an organism reproduces Maturity – the age at which reproduction begins ...
... reaching reproductive age Procreation – the number of times per year an organism reproduces Maturity – the age at which reproduction begins ...
Population Ecology
... • The answer involves the idea of a carrying capacity for the given area where the population resides – this is the maximum number of organisms that can be sustained by an ecosystem over time. • The word “sustained” is used because the population must be able to live there year after year for the ec ...
... • The answer involves the idea of a carrying capacity for the given area where the population resides – this is the maximum number of organisms that can be sustained by an ecosystem over time. • The word “sustained” is used because the population must be able to live there year after year for the ec ...
FriedlandVocabCh6
... population: The individuals that belong to the same species and live in a given area at a given time community: All of the populations of organisms within a given area population ecology: The study of factors that cause populations to increase or decrease population size (N): The total number of ind ...
... population: The individuals that belong to the same species and live in a given area at a given time community: All of the populations of organisms within a given area population ecology: The study of factors that cause populations to increase or decrease population size (N): The total number of ind ...
Exam 2 Study guide Part 2 Putting it all together: Ecology and
... Putting it all together: Ecology and ecosystems Overview: The Scope of Ecology Ecology is the scientific study of the interactions between organisms and the environment These interactions determine distribution of organisms and their abundance Ecology reveals the richness of the biosphere The Scope ...
... Putting it all together: Ecology and ecosystems Overview: The Scope of Ecology Ecology is the scientific study of the interactions between organisms and the environment These interactions determine distribution of organisms and their abundance Ecology reveals the richness of the biosphere The Scope ...