Environmental Engineering Reference
In-Depth Information
Fig. 5.13 Size-class distribution for red maple and black ash in a forested wetland site
Homework
Exercise 1: Devise a Sampling Strategy
Your goal is to construct a sampling scheme based upon a pilot study (in the case of
the provided data set, this is reed canarygrass ( Phalaris arundinacea )). Using your
own data or the data provided below, devise a sampling strategy based upon the
(1) species accumulation curve and (2) performance curve of abundance of the
species of interest. If you plan to use your own data, download the free program
EstimateS (Colwell 2009 ), to calculate your own species accumulation curve.
Provided data set (calculate a performance curve):
P. arundinacea percent-
cover
Cumulative mean percent-
cover
95 % Confidence
Interval
Sample
1
37.5
2
2.5
3
0
4
0
5
37.5
6
87.5
7
15
8
15
9
62.5
(continued)
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