B6 - global challenges Flashcards
what is conservation?
the preservation and careful management of the environment or natural resources
what is an ecosystem?
community of organisms (biotic) and non-living (abiotic) components of an area and their interactions
what is ecotourism?
tourism driven towards natural environments to benefit local conservation schemes
what is a habitat?
place where plants, animals and all other living organisms live; a habitat includes all biotic and abiotic factors
what is capture-recapture?
method of estimating population size:
- organisms captured, marked, then released back into community
- time allowed for them to re-distribute and another sample collected
- number of marked and unmarked species in second sample compared
what is a pooter?
piece of equipment used for sampling a known area to determine abundance and distribution of organisms
what is pollution?
contamination or destruction of natural environment due to human intervention
what is a quadrat?
square grid used for sampling known area to determine abundance and distribution of organisms
what is random sampling?
sampling technique used to avoid bias in which sample area chosen at random
what is a species?
group of organisms that can interbreed and produce fertile offspring
what is sustainability?
ability to maintain something for future generations
what is a transect?
a line (usually created by tape measure) along which samples are taken; used to measure abundance and distributions of organisms in an ecosystem
what techniques can be used to sample different species?
- pooter
- kick sampling
- pitfall trap
- sweep nets
- quadrat
what isa potter used to sample?
insects
