ecosystems Flashcards
ecology
the study of relationships between living organisms
abiotic
non-living components of an ecosystem
biotic
living organisms in an ecosystem
community
different populations living in the same place at the same time
population
a group of the same species living in the same place at the same time
habitat
a place where a population of organisms live
biodiversity
a variety of biotic factors living in the world or a particular place
competition
a relationship where organisms compete for limited resources
ecosystem
a community of living organisms and non living factors
interdependence
all organisms in an ecosystem depend on each other
symbiotic relationships
a close physical relationship between two organisms
commensalism
relationship between two orgnisms of different species
one benefits, the other is not affected
mutualism
relationship between two organisms of different species
both benefit
parasitism
one organism (a parasite) lives on or in the body of another organism (the host)
The parasite benefits, host is harmed
predator
a animal that hunts and feeds on prey
prey
an animal that is hunted and killed by predator
producer
an organism that produces their own food
(e.g. plants, grass)
Consumer
feeds on producers and/or other consumers
pass on energy
(e.g. animals)
de-composer
an organism that gains nutrients by breaking down dead organisms
food chain
who eats who
starts at producer & ends at decomposer
food web
all the food chains in an ecosystem
Pyramid of Biomass
a pyramid showing the total number of organisms at different trophic levels in an ecosystem
conservation
preservation and management of biodiversity and natural resources
bushfire
destory plant and animal life
some aus plants need fire to open seed heads
