Topic 8) Ecosystems Flashcards
community
two or more population of organisms
distribution
the spread of living organisms in an ecosystem
ecosystem
a community of animals, plants, micro-organisms, non living things and their shared environment
habitat
the place where an organisms lives
interdependence
organisms depend on each other for survival
population
all the members of a single species that live in a habitat
environment
all the conditions that surround a living organisms
abiotic factors
non living factors
biotic factors
living factors
examples of abiotic factors
light intensity
temperature
soil pH
oxygen availability
pollution
examples of biotic factors
availability of food
new parasite or pathogen
new predator
competition between species
what are the impacts of light intensity if too high?
photosynthesis is slowed
what are the impacts of light intensity if too low?
photosynthesis is slowed
what are the impacts of temperature if too high?
enzymes denature
what are the impacts of temperature if too low?
photosynthesis doesn’t occur
what are the impacts of soil pH if too high?
effects nitrates, distribution of plants
what are the impacts of soil pH if too low?
effects the rate of decay
what are the impacts of oxygen availability if too high?
no CO2 is absorbed
what are the impacts of oxygen availability if too low?
in water, the fish will die
what are the impacts of pollution if too high?
can poison or harm organisms
what are the impacts of pollution if too low?
organisms thrive
what are the impacts of availability of food if too high?
reproduce more, population increase
what are the impacts of availability of food if too low?
struggle to survive, unable to reproduce
what are the impacts of a new parasite or pathogen if too high?
could wipe out entire species
what are the impacts of a new parasite or pathogen if too low?
organisms don’t evolve
what are the impacts of new predators?
organisms have no defence, can be wiped out quickly
what are the impacts of competition between species?
no successful breeding
