**Silhouette Analysis of
Zooplankton**

**Goals**

**Previous Methods**

**Previous Methods**

**Say Cheese! : Silhouette
Photographic Method**

**1**

**2**

**3**

**Scanned sample**

**Scanned sample**

**Slide 11**

**Digitizer Method**

**Slide 13**

**Menus**

**Slide 15**

**Set length lims, colors**

**20 random sq.**

**40 random sq.**

**Adjust colormap**

**A sample ready to be
digitized.**

**Slide 21**

**Slide 22**

**Slide 23**

**Data file**

**Edit plate parameters**

**Slide 26**

**Slide 27**

**Lengths histogram -
linear**

**Linear histogram– scale
factor 10**

**Length histogram – log
10, **

equal-sized bins

**Length histogram –log10
bins (std. dec.)**

**Standard lengths I**

**Standard lengths II**

**Length:Wet Weight
Formulas**

**Excel histogram data:
**

Counts

**Excel histogram data:
Weights**

**Excel histogram data:
Lengths**

**Abundance distribution
plot**

**Biomass distribution plot**

**Species composition from
silhouettes**

**Sources of Error**

**Preliminary Biomass
Measurement**

**Displacement Volume
Measurement**

**Sildata vs. dvol plot**

**Program Requirements**

**Benefits**

**Benefits**

**Benefits**

**Acknowledgements**

**Slide 50**