Week 4 learning Objectives Flashcards
Define a Random sampling unit
The sampling of randomly selected units of all possible sampling units
Define a sampling unit
the spatial (Size of a lake) and temporal (How often it is sampled) bounds of population under study
Define a stratified sampling unit
Sampling clearly defined groups while still randomly selected. I,e Shallow vs deep sections of a lake
Define a systematic sampling unit
Sampling units equally spaced in time or space. I,e spring - summer
What is a high accuracy measurement
A measurement of results close to the true values. This can result in low precision
What is a high precision measurement
The repeat-ability/reproduction of the measurement. This can result in low accuracy
What type of organisms would you use quadrats
Sessile or slow moving organisms
What type of organisms would you use sweep nets
Small aquatic organisms
What type of organisms would you use visual surveys
Larger animals (Mainly land based)
What type of organisms would you use capture - tag - recapture
Tracking animals that travel long distances
What type of organisms would you use depletion estimation
Organisms that may have a growing or depleting population. Via repeated sampling
What are some challengers of sampling animals
Vast numbers - Rare species - life history - ethical concerns - misleading samples
Challengers related to plants
Vast numbers - Rare species - life history - Seasonality - plasticity/clonalitiy - Hybridation
What is a Treatment/Factor (T)
The part of the experiment under manipulation or subject of comparison
What is a Control (C)
Similar to a treatment in all respects besides what the treatment has changed
