Road Map – Ecology (Part 2)
Biomes and Population Growth
4.2 – What Shapes and Ecosystem
1.
2.
3.
Describe how biotic and abiotic factors influence an ecosystem.
Describe the interactions that occur within an ecosystem.
Describe the phenomenon of ecological succession.
Read Sections…
 Biotic and Abiotic Factors
 The Niche
 Community Interactions
 Ecological Succession
4.3 – Biomes
1.
Describe the unique characteristics of each of Earth’s biomes.
Read Sections…
 Biomes and Climate
 The Major Biomes
 Other Land Areas
5.1 – How Populations Grow
1.
2.
3.
Describe the characteristics of a population
List the factors that affect population size
Distinguish between exponential growth and logistical growth
Read Sections…
 Characteristics of Populations
 Population Growth
 Exponential Growth
 Logistic Growth
5.2– Limits to Growth
1.
Describe the factors that limit the growth of a population
Read Sections…
 Limiting Factors
 Density-Dependent Factors
 Density-Independent Factors
5.3– Human Population Growth
1.
Describe the factors that limit the growth of a population
Read Sections…
 Historical Overview
 Patterns of Population Growth
 Future Population Growth
1.
biotic factor:
2.
abiotic factor:
3.
habitat:
4.
niche:
5.
resource:
6.
competitive exclusion principle:
7.
predation:
8.
symbiosis:
9.
mutualism:
Vocabulary
biological influence on organisms within an
ecosystem
physical, or nonliving, factor that shapes an
ecosystem
the area where an organism lives, including
the biotic and abiotic factors that affect it
full range of physical and biological
conditions in which an organism lives and the
way in which an organism uses these
conditions
any necessity of life, such as water,
nutrients, light, food, or space
ecological rule that states that no two
species can occupy the same exact niche in
the same habitat at the same time
interaction in which one organism captures
and feeds upon another organism
relationship in which two species live closely
together
symbiotic relationship in which both species
benefit from the relationship
10.
commensalism:
11.
parasitism:
12.
ecological succession:
13.
primary succession:
14.
pioneer species:
15.
secondary succession:
16.
biome:
17.
tolerance:
18.
population density:
19.
20.
21.
immigration:
emigration:
exponential growth:
22.
logistic growth:
23.
carrying capacity:
24.
limiting factor:
25.
density-dependent limiting factor:
26.
predator-prey relationship:
27.
density-independent limiting factor:
28.
microclimate:
29.
canopy:
symbiotic relationship in which one member
of the association benefits and the other is
not helped or harmed
symbiotic relationship in which one organism
lives in or on another organism (the host)
and consequently harms it
gradual change in living communities that
follows a disturbance
succession that occurs on surfaces on which
no soil exists
first species to populate an area during
primary succession
succession following a disturbance that
destroys a community without destroying
the soil
a group of ecosystems that have the same
climate and dominant communities
the capacity of an organism to grow and
thrive when subjected to an unfavorable
environmental factor
number of individuals per unit area
movement of individuals into an area
movement of individuals out of an area
occurs when individuals of a population
reproduce at a constant rate
occurs when the exponential growth of a
population slows or
largest number of individuals an area can
support when limiting factors kick in
a factor that causes population growth to
slow down or stop
slows or stop population growth only when
the population density reaches a certain
level
the regulation of population size by
predators
affect all populations in the same way,
regardless of their size (e.g. drought, heat,
cold, tornadoes)
climate within a small area that differs
significantly from the climate of the
surrounding area
dense covering formed by the leafy tops of
30.
understory:
31.
deciduous:
32.
coniferous:
33.
humus:
34.
taiga:
35.
permafrost:
tall trees in a rain forest
layer in a rain forest formed by shorter
trees and vines
term used to refer to refer to a tree that
sheds its leaves during a particular season of
each year
term used to refer to trees that produce
seed-bearing cones and that have thin leaves
shaped like needles
material formed from decaying leaves and
other organic material
biome in which the winters are cold but
summers are mild enough to allow the ground
to thaw
layer of permanently frozen subsoil in the
tundra