Download Name: Chapter 35: Population and Community Ecology Vocabulary

Name: _____________________________
Chapter 35: Population and Community Ecology
Vocabulary
population density: number of individuals of a particular species per unit area or
volume (Concept 35.1)
exponential growth: growth of a population that multiplies by a constant factor at
constant time intervals (Concept 35.2)
limiting factor: condition that restricts a population's growth, such as space,
disease, and food availability (Concept 35.2)
carrying capacity: number of organisms in a population that an environment can
maintain (Concept 35.2)
density-dependent factor: factor that limits a population more as population
density increases (Concept 35.2)
density-independent factor: factor unrelated to population density that limits a
population (Concept 35.2)
age structure: proportion of people in different age groups in a population
(Concept 35.3)
interspecific competition: competition between species that depend on the same
limited resource (Concept 35.4)
competitive exclusion: one species succeeding over another when the growth of
both species is limited by the same resource (Concept 35.4)
niche: unique living arrangement of an organism defined by its habitat, food
sources, time of day it is most active, and other factors (Concept 35.4)
predation: interaction in which one organism consumes another (Concept 35.4)
symbiotic relationship: close interaction between species in which one species
lives in or on the other (Concept 35.4)
parasitism: relationship in which a parasitic organism obtains its food at the
expense of a host organism (Concept 35.4)
mutualism: type of symbiotic relationship in which both organisms involved
benefit (Concept 35.4)
commensalism: symbiotic relationship in which one organism benefits, while the
other organism is neither harmed nor helped (Concept 35.4)
ecological succession: series of changes in the species in a community, often
following a disturbance (Concept 35.5)
primary succession: process by which a community arises in a virtually lifeless
area with no soil (Concept 35.5)
secondary succession: change following a disturbance that damages an existing
community but leaves the soil intact (Concept 35.5)
introduced species: species moved by humans to new geographic areas, either
intentionally or accidentally (Concept 35.5)
Name: _____________________________
Chapter 35: Population and Community Ecology
Vocabulary
population density:
exponential growth:
limiting factor:
carrying capacity:
density-dependent factor:
density-independent factor:
age structure:
interspecific competition:
competitive exclusion:
niche:
predation:
symbiotic relationship:
parasitism:
mutualism:
commensalism:
ecological succession:
primary succession:
secondary succession:
introduced species: