Ecology Unit Test review
... Know the following terms/processes
o Populations, communities, ecosystems
o Survivorship curves
o Population growth – factors that attribute to growth and decline
o Age structures
o Carrying capacity
o Density dependent/independent factors
o Competition, interspecific competition
o Mut ...
... Carrying capacity (K): The number
of organisms of one species that an
environment can support
Chapter 7 (Human population) Study Guide
... APES CHAPTER 7 (Human Population) STUDY GUIDE
Know the following information, facts, and definition for Chapter 7 quiz. Quiz consists of 29 multiple
choice and a free response question.
1. Birth rate definition.
2. Growth rate of population, definition, calculation and its impact ( positive and nega ...
Unit 2: Ecology Content Outline: Population Ecology (2.2)
... C. Dispersion – This term refers to the pattern of organisms within a given area.
1. Clumped – This pattern results from a need for nutrients, water, or some other important items.
2. Uniform – This pattern results from territoriality or favorable environment.
3. Random – There is no apparent reason ...
Introduction to Population Dynamics
... IV. Carrying Capacity & Population Growth
A. Carrying Capacity- the number of individuals in a
population that can be sustained indefinitely in a given
Characteristics of Populations
... Density-Dependent Limiting Factors
• Factors that are related to the density of a
•Organisms compete for food, water, space,
sunlight, and other essentials
•Population control caused by predator-prey
Ecosystems - TeacherWeb
... to the same species and live in
the same area, at the same time.
• A population is an interbreeding
(and evolving) group.
Population Size Factors
... environmental factors
that limit populations
– Natural disasters
– Human activity
Ecology - the study of the relationships between organisms and their
... Ecology - the study of the relationships between organisms and their environment. The environment includes an
organism’s its surroundings and other organisms. Ecology studies the relationships and interactions among
individuals within a population and with individuals of different populations. Becau ...
POPULATION BIOTIC POTENTIAL: REPRODUCTIVE RATE
... BIOTIC POTENTIAL: REPRODUCTIVE RATE: NUMBER OF LIVE BIRTH, EGGS
LAID, ETC. and RECRUITMENTS: MAKING IT THROUGH EARLY GROWTH
STAGES TO BECOME A PART OF BREEDING, REPRODUCING POPULATION.
7A Science Review Game Questions Warning: This is not an
... a. 500 ladybugs/20 cm2 =25 ladybugs/ cm2 (MAKE SURE YOU HAVE THE CORRECT UNITS!)
8. Name two ways scientists can calculate total population
a. Mark-and-recapture (don’t need to know for the test), sampling (like we did in the quadrat
lab with the wrapping paper and quadrat square), direct observatio ...
Human Ecology and Succession
... the same species that live in a particular
place at one time.
A population could be a species of plants,
animals, bacteria, or people, living in a
given area (for example, bass living in an
Limits to Growth Notes
... grew slowly due to lack of food, disease, &
death rates were so high.
About 500 years ago, the human population
began growing more rapidly due to industry,
agriculture, improved sanitation, &
... Life expectancy = how long individuals in pop. are expected to live
– Take a guess: life expectancy for men and women in United States
• Men =
• Women =
... – Natality – number of new
species due to reproduction
– Mortality – number of deaths
– Immigration – members
arriving from other places
– Emigration – members
leaving the population
2.7 Biotic and Abiotic Influences on Ecosystems
... • Population numbers can be determined by the following
(Birth rate + Immigration) – (Death Rate + Emigration)
Immigration = species moving into a region
Emigration = species moving out of a region
The Population Bomb
The Population Bomb is a best-selling book written by Stanford University Professor Paul R. Ehrlich and his wife, Anne Ehrlich (who was uncredited), in 1968. It warned of the mass starvation of humans in the 1970s and 1980s due to overpopulation, as well as other major societal upheavals, and advocated immediate action to limit population growth. Fears of a ""population explosion"" were widespread in the 1950s and 60s, but the book and its author brought the idea to an even wider audience. The book has been criticized since its publishing for its alarmist tone, and in recent decades for its inaccurate predictions. The Ehrlichs stand by the basic ideas in the book, stating in 2009 that ""perhaps the most serious flaw in The Bomb was that it was much too optimistic about the future"" and believe that it achieved their goals because ""it alerted people to the importance of environmental issues and brought human numbers into the debate on the human future.""