Biotic and abiotic factors and sampling

• What are pitfall traps used to sample?

  used to sample invertebrate animals that move around on surfaces
• How are abiotic factors measured?

  using instruments such as: light meters, moisture meters, and thermometers
• What are biotic factors?

  Biotic factors are living things within an ecosystem such as competition, disease, grazing and predation
• What are abiotic factors?

  Abiotic factors are non-living components of an ecosystem that influence the organisms living within it. This includes temperature, light intensity, water availability, soil composition, and air quality.
• What is effected by abiotic and biotic factors?

  Biodiversity & the distribution of organisms in an ecosystem
• What are samples used for?

  Samples are taken to represent the population of an organism in a habitat or ecosystem
• What are quadrats used to sample?

  Plants and slow moving animals/organisms
• Why should large numbers of samples be taken?

  so that the results are representative and reliable
• What is an indicator species?

  Indicator species are organisms that indicate the quality of the environment. The presence or absence of them reflects the environmental conditions