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populations and ecosystems (the structure of ecosystems (physiognomic…
populations and ecosystems
plants in relationship to their habitat
abiotic components if the habitat
climate
temperature
rainfall
relative humidity
winds
etc
tolerance range
no frost
only cool climates
viable temperature range
soil factor
A horizon
uppermost
litter and debris
B horizon
depostion
rich in nutrients
C Horizon
parent rock
rock fragment
biotic components of the habitat
plant itself
modifies surrounding habitat
other plant species
mutualism
competition
niche
ideal living
the structure of populations
geographic distribution
limiting factor
too much light
not enough light
carbon dioxide
local
random distribution
clumped distrubtions
uniform distribution
chemicals
alleochemics
allelopathy
age distribution: demography
generation time
birth to reproduction
intrinsic rate of natural increase
biotic potential
carrying capacity
K
r- and K- selection
biotic potential
r
fires and floods
selected species
only the strong survive
capacity
K
filled limit
long life beneficial
k selected species
redwood
the structure of ecosystems
physiognomic structure
trees
shrubs
herbs
lower lying bulbs
temporal structure
time constitute
day or night dweller
spring
renewed activity
species composition
numbers and diversity
within an ecosystem
climate
cold
hot
dry
wet
poor soil
trophic levels
feeding levels
primary
secondary
tertiary
carnivores
omnivores
herbivores
omnivores
plants
energy flow
pioneers
first plant to invade new soil
tolerate sandy soil
