Pioneer community
What is the organism survival strategy in the Pioneer community?
r-strategists
What is the organism survival strategy in the Climax community?
k-strategists
Which has a long life?
K
Primary succession occurs in areas that ______?
Have never been occupied by an ecological community
Pioneer communities are the _____ community in the transitions. (First/Last)
First
High diversity occurs in which stage?
Climax Community
Which has a large amount of offspring?
R
Secondary succession occurs in areas that ______?
There has been a natural or anthropogenic disturbance
The diversity in a pioneer community is ______? (High/Low)
Low
The diversity in a climax community is ______? (High/Low)
High
Can withstand unstable environments
R
Examples of where primary succession happens
bare rock or sand dunes
What is the stability level of a pioneer community?
Poor
The final stage in terrestrial succession
Climax
An oyster is an example of which type of strategist
R
Examples of where secondary succession happens
Abandoned fields, deforested areas, storm damage, flooding.
For Double points:
Are the species within pioneer communities more likely to be r-strategists or K-strategists. List one reason why
Daily Double!!! R for multiple reasons:
r-strategists produce greater numbers/many offspring/fast population growth;
r-strategists distribute themselves more widely/colonize more quickly;
r-strategists mature quickly/reproduce earlier/establish themselves faster;
r-strategists better adapted to harsh/low-nutrient conditions/less specialised niches;
For double points:
A climax community is stable because:
greater number of species/habitat/ecological niches/genetic diversity in climax community;
gross productivity/stored biomass is higher in climax community;
more complex/diverse energy pathways/food webs;
more established nutrient cycling;
more favourable abiotic conditions/soil properties;
more established negative feedback mechanisms;
A human is a
k strategist
Describe the process of primary succession
1) Bare rock
2) Lichens on Rock.
3) The lichens die and decompose creating top soil.
4)Grass Grows displacing the pioneers.
5)More nutrients mean Shrubs can grow
6) Trees and then we reach a Climax Community