| Population | All the organism of one species found in that habitat |
| Community | all the organisms of all the species found in that habitat |
| Eco system | the community plus biotic and non biotic factors |
| species | organisms that share similiar dna and can reproduce to make fetile off spring |
| Species richness | the number of different species found in that habitat |
| biotic factors | living |
| non biotic | dead |
| niche | the role of the organism in that habitat |
| IntRAspecific competiton | comp between individuals of the SAME species |
| IntERspecific competition | comp between individuals of DIFFERENT species |
| Adaptation | increase survival chance |
| stable pop | a population without a net increase or decrease in numbers over time |
| Population density | the number of individuals per unit area |
| carrying capacity | the max stable pop an eco system can maintain |
| Predator prey cycle | Prey increases due to unlimited food source so they is ENERGY to reproduce and as they prey aren't eaten the pop increases.
AFTER a short delay predators pop increases as they is now a larger food source so less intraspecific comp
This increase leads to prey pop to decrease as they are higher number of predators to eat prey so more being killed.
as a result of less prey they is a smaller food source so more intraspecific comp |
| Grid method trigger words | Grid
Co ord
Count
Mean
Whole area |
| Grid method | Grid - lay over map
Co ord - gather 20 co ordinates . random number generator (avoid bias , increase represenative )
Count - place quadrat at coordinates and count no of plants in
Mean - calculate mean no of plants in each quardat/ divide by tot no of quadrat
Whole area - total area/ sampled area x mean no of plants in each |
| Transect trigger words | Transect
Quadrat
Count
Repeat
Calculate
Repeat |
| Transect method | Transect - set up at a right angle to location
Quadrat - Place quadrat at reg intervals along the line
Count - the amount or % cover
Repeat - 3 times to be able to calculate a mean so add all mean's divide by 3 |
| Mark release capture trigger words | Catch
Mark
Release
Recapture marked/non marked
Equation N1 X N2 / M2 |
| Trigger words for successions | Pioneer species
change ( environmental conditions)
next species ( less hostile)
repeat
climax |
