Ecosystem Flashcards
Ecological succession
the spatial pattern over time
Primary Succession definition
no living organism present before
example-newly formed pond
biotic community
need soil
soil
becomes fertile depending on climate
Definition (Ecological succession)
Predictable, gradual change
in species composition
of a given area
Climax community
No further evolution
Pioneer species steps
colonize area
increase their population
decrease others population
become climax community
crucial factor
time
sere definition
the SEQUENCE of the successive change in a given area
an entire GRADIENT of an organism from pioneer stage to climax stage
seral community meaning
no.
individual transitional community
increase number of species and biomass
secondary community
after biotic community is destroyed
secondary community characteristics
faster
focuses on changing vegetation
affects food and shelter
changes types of animals and decomposers
if secondary is disturbed
seral stage of succession will go to the preceding stage
or
it will create a condition that encourages or discourages species
Process of succession
nurses inhaled ECS and crackh carl read superman
Nudation Invasion Ecesis Aggregation competition Co-action Reaction Stabilization
area
wet-hydrosere-hydric to mesic
dry-xeresere-xeric to mesic
2 important points
the primary succession a slow process
ends with mesic
In the primary succession of aquatic habitat
PR resented free reviews, made Styles and Taylor frown
phytoplankton root-submerged plants root floating angiosperm free-floating reed swamp marsh-meadow scrub trees forest
In the secondary succession of aquatic habitat
climax community reached faster
depends on the soil, water, environment, and seed
faster
what do pioneer species do?
invade bare area
initiate succession
