notes: comparison of counting systems
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Transcript notes: comparison of counting systems
Welcome back!
Read the board and
review for quiz on
laws!
Endangered Species Laws
Lacey Act
Endangered Species Act
Convention on
International Trade in
Endangered Species
Be ready to
compare/contrast
I will answer only two
questions from the
class.
OK! Please put
your natural
selection reading
outline on your
desk for a stamp
during the quiz!
Healthy?
Threatened?
Endangered?
Counting has legal consequences!
Please get out your wildlife management notes.
Random Sampling activity –
(the beans)
Share your * answers!
#3 – Asymptotic point = more PRECISION
#7 – How could we have improved accuracy?
Does any of this apply to our lab work comparing the
managed and unmanaged prairie areas?
Why count population size
accurately?
Census vs. Random
sampling.
Standardized procedure
reduces bias
Improving accuracy:
More samples
Strict standards for
asymptotic point
Tailor data collection to
organism’s life history
ROBUST DATA!
Accuracy is important –
legal protection can limit
individual land
use/decisions
Quadrant Sampling in Wolf
Prairie – design flaws?
Transect sampling
Tag and Recapture is a TYPE
of random sampling
-population size
-identify critical habitat
-identify migratory pathways
-monitor population health
Bird Banding
Contact info, ID number
Westside at Guadalupe State Park
– Spring 2014 Bird Banding
Permanent tracking devices
PIT tagging
Tag and Recapture
OK to recapture same individual.
Formula accounts for this.
Why is it important for wildlife managers to determine
population size accurately?
Assessing population size
Census
Counts each individual
organism
Large organisms
Stationary
Areal photos
Random Sampling
Vegetation
Animals
Quadrant
Tag and R
Transect
ratio
H’