Chapter 1 Vocabulary Review

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Chapter 1 Vocabulary Review
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The behavioral and physical characteristics of a
species that allow them to live successfully in
their environment.

• Adaptation

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An interaction in which one organism kills and
eats another organism

• Predation

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

• Symbiosis

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The organism that benefits in parasitism

• Parasite

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Moving into a population

• Immigration

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A relationship in which both species benefit

• Mutualism

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

• Photosynthesis

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The organism that is harmed in parasitism

• Host

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An approximation of a number, based on reasonable
assumptions.

• Estimate

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The organism that does the killing

• Predator

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

• Secondary Succession

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Living parts of an ecosystem

• Biotic factors

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

• Succession

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The number of births in a population in a certain
amount of time.

• Birth rate

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

• Species

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The first species to populate the area

• Pioneer species

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Moving out of a population

• Emigration

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

• Commensalism

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The number of individuals in a specific area

• Population density

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

• Primary Succession

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

• Competition

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

• Parasitism

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All the different populations living together in
an area

• Community

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An organisms particular role in its habitat, or
how it makes a living

• Niche

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A method used to determine population size using
the following formulaTotal population
(number of total individuals captured X number of
originally marked ) Total number of
individuals recaptured with mark

• Mark and Recapture

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An environmental factor that prevents a
population from increasing

• Limiting factor

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The organism that is killed

• Prey

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Counting every organism that you see to determine
population size

• Direct observation

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

• Natural Selection

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

• Habitat

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Counting signs of an organism to determine
population size

• Indirect observation

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

• Sampling

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All living things

• Organisms

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

• Ecology

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The largest population that an environment can
support

• Carrying capacity

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All the members of one species in a particular
area

• Population

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Nonliving parts of an ecosystem

• Abiotic factors

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The levels of ecological organization from
smallest to largest.

• Organism, population, community, ecosystem

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The Great Oyster Sampling.
OYSTER BED...
100 meters wide X 50 meters ??
There are 20 oysters per square meter, so how
many oysters would be in an area this size?
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• 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!!