The feeding relationships between organisms in an ecosystem can be seen in food chains. Sampling allows us to measure the abundance and distribution of these species.
What is used for estimating the number of plants?
What is the name of the sampling square used in fieldwork?
A 0.25 m2 quadrat was placed in a 100 m2 field. Five daisy plants were counted in the quadrat. What is the estimated number of daisies in the field?
Energy for all food chains comes from what source?
Producers are usually what?
How is energy in food chains lost?
Heat and light
Respiration and heat
Death and decay
What happens to the biomass at each stage in a food chain?
Stays the same
Which of these is systematic sampling?
How do decomposers break materials down?
Using their jaws
How is efficiency of energy transfer calculated?
Biomass at the higher trophic level divided by energy at lower level x 100%
Energy at the higher level plus the energy at the previous level
Energy at one level divided by energy at the next level x 100%