Ecology Flashcards
Definition of biodiversity
A measure of the range of different species of organisms living in an area
Community
The relationships between all the living species in an area
Ecosystem
The relationship between the living species and their environment
Environment
The surroundings in which an organism lives
Habitat
The place where an organism lives and breeds
Population
The number of organisms of a single species in a given habitat
4 sampling techniques
Pitfall trap
Quadrat
Pooter
Net
Description of pitfall trap
A hole is dug to accommodate a container and a raised lid is placed on top to prevent entry of rain/predators. The trap is then left for a period of time.museful for collecting small ground living animals.
Quadrat
This is a square frame that can be placed at a series of randomly chosen coordinates.
If species cannot be identified then percentage cover can be used
Poorer
Allows small animals to be sucked into an observations chamber so that they can be easily identified
Net
Often used in long vegetation of in streams and rivers to catch small organisms to identify
Abiotic factors
Light intensity
Wind speed
Water availabilit
pH
