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Wildlife Test Review Censusing
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Why would you use complete count?
species on an open range
species congregate in a certain area
small study area
What is a population abundance?
number of individual animals
What is population density?
number of individuals per unit area
What is a census?
complete count of all animals in a population
What is a population estimate?
approximation of the true population size based on sampling method
What is a measure of how close a population estimate can be repeated?
precision
What is a measure of how close a population estimate is to the true population size?
accuracy
What is the difference between expected value and actual population size?
bias
What are drives?
observers walk a line and count
Why would you use territorial mapping?
birds/mammals that defend a territory
usually count males only
What is an open population?
individuals may move in and out of the population via births, deaths, emigration, or immigration
What is a closed population?
demographic and geographic closure; no births or deaths, emigration or immigration between sampling periods
What is a population index?
measures population compared to other measures of population in the same area
What is the confidence interval?
CI
reliability of a population estimate
expressed as percentage
How can you census animals?
complete counts
drives
territorial mapping
aerial surveys
remote sensing
ground transects
call counts
pellet-group counts
mark-recapture
Why would you use an aerial survey?
rough or inaccessible terrain
common for elk, pronghorn, mule deer, bighorn sheep
What is remote sensing?
use infrared sensors and cameras
used in certain situations
What is a call count?
auditory index of population trends
used for birds
Author
alyssau12
ID
261704
Card Set
Wildlife Test Review Censusing
Description
WLDM test 1, section 6
Updated
2/13/2014, 2:20:51 PM
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