Population Ecology Chapter 4. GPS SB4 Students will assess the dependence of all organisms on one another and the flow of energy and matter within their.

Slides:



Advertisements
Similar presentations
Chapter 4 Population Ecology
Advertisements

Chapter 4 Population Ecology
Population in Ecology.
Ecology What is Ecology? The study of the interaction of living organisms with one another and their environment.
Population Ecology.
Chapter 4 Population Ecology
Population Biology Chapter 4.
Populations.
Population Dynamics (4.1)
Population Dynamics Biology.
Ch 4: Population Biology
Lecture 16 Population Dynamics Ozgur Unal
Why does the US Government conduct a census every 10 years?
Chapter 8: Population Dynamics, Carrying Capacity, and Conservation Biology 8-1 POPULATION DYNAMICS & CARRYING CAPACITY Population – all members of the.
Population Dynamics SOL BIO 9a. BIO SOL: 9a The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems.
Populations.
Population Dynamics.
POPULATION BIOLOGY.
 Population - an interbreeding group of individuals of a single species that occupy the same general area.  Community- interacting populations that.
Biology Chapter 4 Population Ecology
Biology Chapter 4 Population Ecology
Snowshoe Hare and Canada Lynx Population: a group the same species that live in the same place at the same time Resources: food, water, shelter, space.
All living organisms are limited by factors in the environment.
Population Dynamics (4.1)
Unit 7: Ecology Left SidePg #Right SidePg # Unit Page34Table of Contents35 Levels of Organization36C.N. – Ecology Part 137 Sources of Energy Tree Map38C.N.
Chapter 4: Population Ecology Wood. 4.1 Population Dynamics I.Population Characteristics 92 II.Population-Limiting Factors 94 III.Population Growth Rates.
Chapter 4: Population Biology
Population Dynamics Day 4
Biology Chapter 4- Population Biology
Click on a lesson name to select. Population Biology Lesson 6.
Population Ecology. Population Characteristics Population Density: –The number of organisms per unit area Spatial Distribution: –Dispersion: The pattern.
Chapter 9 Population Dynamics, Carrying Capacity, and Conservation Biology Miller – Living in the Environment 13 th ed.
Essential Questions What are the characteristics of populations and how they are distributed? What are the differences between density-independent and.
Population Ecology 4-1: Population Dynamics Populations are described as follows: Density Spatial distribution Growth rate Would an individual be considered.
Ecology 2b- Population Growth & Limiting Factors.
Population Ecology. Population Essential Questions What factors influence populations in ecosystems? How do human population dynamics affect the world.
1. Population and community ecology 2 © Zanichelli editore 2015.
Chapter 4: Population Ecology. CHAPTER 4.1: POPULATION DYNAMICS.
Population Dynamics SB4 a & d. The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems. Key concepts.
Population Biology Under ideal conditions, populations will continue to grow at an increasing rate. The highest rate for any species is called its biotic.
Chapter 4: Population Ecology Essential Questions: EQ: How would changes in populations affect the flow of energy and matter in the ecosystem? EQ: How.
Populations Characteristics and Issues. Population Characteristics A population is a group of individuals of the same species inhabiting the same area.
Click on a lesson name to select. Population Density.
Populations are described by density, spatial distribution, and growth rate. Population Ecology.
Population Dynamics Part 2. Population Characteristics 1.Population Density: – The number of organisms per unit area 2.Spatial Distribution: – Dispersion:
Population Ecology Words in RED are important thought questions, concepts, or instructions. Words in BLUE go in your interactive notebook. Words in GREEN.
 Do you think that a population can just grow forever and forever?
Population Ecology Chapter 5, Section 3. Population Dynamics Population: all the individuals of a species that live together in an area Demography: the.
Section 1: Population Dynamics
Population Dynamics Biology I.
the number of individuals per unit area
Population Ecology.
Chapter 4 – Population Ecology
Chapter 4 Population Ecology
Chapter 4 Population Biology.
Section 1: Population Dynamics
The number of organisms per unit area
Chapter 4 Population Ecology
Chapter 4: Pages , 107 September 27-28, 2017
Population Dynamics Chapter 4 Section 1.
Population Characteristics
Chapter 4 Population Ecology
Population Dynamics Chapter 4 Section 1.
Chapter 4 Population Ecology
The number of organisms per unit area
Chapter 4 Population Ecology
The number of organisms per unit area
Population Ecology.
Chapter 4 Population Ecology
Presentation transcript:

Population Ecology Chapter 4

GPS SB4 Students will assess the dependence of all organisms on one another and the flow of energy and matter within their ecosystems. d. Assess and explain human activities that influence and modify the environment such as global warming, population growth, pesticide use, and water and power consumption.

 A biological community is a group of interacting populations that occupy the same area at the same time. A desert oasis

Organisms within a community adapt to the conditions in which they live. These conditions are often abiotic factors Communities are often stable but may evolve and change over time.

Keeps a population in check. Doesn’t allow unlimited growth. Limiting factors include: Food, water, shelter/ habitat, mates Organism compete for these limited resources

Population Dynamics Populations of species are described by density, spatial distribution, and growth rate

Population Characteristics Population Density The number of individuals per unit area Spatial Distribution The pattern of spacing of a population

Population Ranges Populations can not live in all environments Abiotic conditions effect the range of environments in which a population can live A species might not be able to expand its population range because it cannot survive the abiotic conditions found in the expanded region.

Population Limiting Factors There are two categories of limiting factors 1.density-independent factors Any factor in the environment that does not depend on the number of members in a population per unit area 2.density-dependent factors Any factor in the environment that depends on the number of members in a population per unit area

Disease Temperature Competition Parasites Storms Food Habitat disruption Drought

Environmental limits to population growth Density-dependent factors disease, competition, parasites, and food Density-independent factors temperature, storms, floods, drought, habitat disruption

An upper limit and lower limit that define the conditions in which an organism can survive The ability of any organism to survive when subjected to abiotic factors or biotic factors is called tolerance.

Population Growth Rates

Exponential growth As the population gets large it also grows faster Reasons this occurs: 1. Initial increase is slow because few breeding individuals 2. As individuals mature, reproducing individuals increases. Time Population size

Exponential growth is not realistic Populations tend to grow until some environmental condition stops growth Time Population size This is called Logistic Population Growth!!

Carrying capacity and Limiting factors Keeps a population in check. Doesn’t allow unlimited growth. Limiting factors include: Food, water, shelter/ habitat, mates Organism compete for these limited resources

Reproductive patterns Species of organisms vary in: the number of births per reproduction cycle the age that reproduction begins, the life span of the organism

What causes a population to grow Number of births is greater than the number of deaths Immigration exceeds Emigration.

What causes a population’s numbers to decrease? Number of births is less than the number of deaths Emigration exceeds immigration.

2 Reproductive Patterns K-strategist –Little environmental change –Generally large organisms –Long life spans –Few offspring with extended parent care R-strategist –Fluctuating abiotic factor occur –Generally small organisms –Short life span –Many offspring

Elephants Bacteria Mice Humans Cows Termites Lions Rabbits

Demography- the study of human population growth characteristics. Age structure-proportions of a population that are at different age levels.

Predator prey relationships