Chapter 1 Vocabulary Review

The behavioral and physical characteristics of a species that allow them to live successfully in their environment.  Adaptation

An interaction in which one organism kills and eats another organism  Predation

A close relationship between two species that benefits at least one of the species.  Symbiosis

The organism that benefits in parasitism  Parasite

Moving into a population  Immigration

A relationship in which both species benefit  Mutualism

The process in which organism make their own food using water, sunlight, and carbon dioxide  Photosynthesis

The organism that is harmed in parasitism  Host

An approximation of a number, based on reasonable assumptions.  Estimate

The organism that does the killing  Predator

The series of changes that occur in an area where the ecosystem has been disturbed, but where soil and organisms still exist.  Secondary Succession

Living parts of an ecosystem  Biotic factors

The series of predictable changes that occur in a community over time  Succession

The number of births in a population in a certain amount of time.  Birth rate

A group of organisms that are physically similar and can mate with each other and produce offspring that can also mate and reproduce.  Species

The first species to populate the area  Pioneer species

Moving out of a population  Emigration

A relationship in which one species benefits and the other is unaffected.  Commensalism

The number of individuals in a specific area  Population density

Series of changes that occur in an area where no soil or organisms exist  Primary Succession

The struggle between organisms to survive as they attempt to use the same limited resource.  Competition

A relationship in which one organism benefits and the other is harmed.  Parasitism

All the different populations living together in an area  Community

An organism’s particular role in its habitat, or how it makes a living  Niche

A method used to determine population size using the following formula: Total population = (number of total individuals captured X number of originally marked ) Total number of individuals recaptured with mark  Mark and Recapture

An environmental factor that prevents a population from increasing  Limiting factor

The organism that is killed  Prey

Counting every organism that you see to determine population size  Direct observation

The process by which characteristics that make an organism better suited for their environment become more common in that species.  Natural Selection

The place where an organism lives and that provides the things the organism needs to survive.  Habitat

Counting signs of an organism to determine population size  Indirect observation

Counting the number of individuals in a small area and then multiplying to find the number ina larger area  Sampling

All living things  Organisms

The study of how living things interact with each other and with their environment.  Ecology

The largest population that an environment can support  Carrying capacity

All the members of one species in a particular area  Population

Nonliving parts of an ecosystem  Abiotic factors

The levels of ecological organization from smallest to largest.  Organism, population, community, ecosystem

100 meters wide X 50 meters = ?? Pretend Oyster Bed…….. There are 20 oysters per square meter, so how many oysters would be in an area this size? The Great Oyster Sampling….

First find the area of the PRETEND OYSTER bed…. 100 meters X 50 meters = 5,000 meters squared Then multiply your SAMPLE SIZE by your AREA SIZE…. 5,000 meters squared X 20 oysters per square meter = 100,000 oysters!!