ecology in the local environment Flashcards
what factors affect the distributions of organisms?
the presence of other living organisms such as predators or
physical factors such as soil type and water availability
what is biodiversity?
the variety of different species living in a habitat
what are the two types of ecosystems?
natural, such as lakes
artificial, such as fish farms
what does a native woodland contain?
plants that have grown there naturally and have not been introduced by humans
what is a habitat?
where a plant or animal lives
what is a community?
all the animals and plants living in the same area
how can the number of organisms in an area be discovered?
using string as a transect line
after using transect lines what is the data plotted in?
a kite diagram
what is biodiversity?
the amount of non-artificial organisms in an area
what does abiotic mean?
non-living
give 3 examples of abiotic factors?
availability of water, exposure and pH
what causes zonation?
for example Ferns prefer wetter places away from the path whereas others prefer dryer places so they live nearer the path
what are the 3 types of traps to capture bugs?
pooters
nets
pitfall traps
what is a quadrat used for?
to see the population of plants or animals in an area
explain what happens in ‘capture and recapture’?
the animals are trapped, recorded and marked in some harmless way
they are then released and the traps are set again a few days later. The animals with or without markings are recorded
