The Coastal Resource Coordinator's Bioassessment Manual

SUMMARY ............................................................... 5-18
REFERENCES.......................................................... 5-19
CHAPTER 6 BENTHIC COMMUNITY STUDIES
INTRODUCTION ........................................................ 6-1
STUDY OBJECTIVES ................................................. 6-2
SAMPLING METHODS ............................................... 6-3
Quantitative vs non-quantitative sampling ......................... 6-3
Sampling Devices..................................................................... 6-5
DATA ANALYSIS ..................................................... 6-10
Ecological Analysis ................................................................6-11
Statistical approaches ............................................................6-13
EPA’S RAPID BIOASSESSMENT PROTOCOLS......... 6-13
SUMMARY ...................................................................................6-15
Study Objective ......................................................................6-15
Sampling Methods.................................................................6-15
Sampling Devices...................................................................6-15
Data Analysis..........................................................................6-16
REFERENCES.......................................................... 6-16
CHAPTER 7 STUDY DESIGN AND STATISTICAL ANALYSIS
INTRODUCTION ........................................................ 7-1
STUDY DESIGN ......................................................... 7-2
Question Formulation ............................................................. 7-2
Reconnaissance Survey ........................................................... 7-5
Station selection........................................................................ 7-6
Random versus nonrandom designs .................................... 7-8
Sample Replication .................................................................. 7-9
STATISTICAL ANALYSIS ......................................... 7-11
Hypothesis Formulation and Testing .................................7-12
Randomization .......................................................................7-16
Correlation and Regression Analysis..................................7-17
SUMMARY....................................................................................7-17
REFERENCES ...............................................................................7-19
iii July 2003