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filename: s3pt3b_fishbiodivSimpsonsNOAA_16sites_2003_2017.csv
date: 2026-07-06 02:09:26.909224
description: simpsons diversity index (1/D) calculated for all psus from NOAA data D considers both species richness and evenness. D = sum_{i=1}^{S} p_i^2 , where p_i is the proportion of individuals of species i and s is the number of species. A higher value of D indicates lower diversity, so the inverse or complementary value 1/D was calculated and used to indicate diversity.
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column names:
program site year month replicate replicatetype simpson_index simpson_diversity

column: program
description: monitoring program
Data Type: character
Unique Values:
   VINPS
   TCRMP
   CSUN

column: site
description: survey site
Data Type: character
Unique Values:
   BUIS-South Fore Reef
   BUIS-Western Spur and Groove
   Brewers Bay
   Cabritte Horn
   East Tektite
   Europa Bay
   Great Pond
   Kings Corner
   Neptunes Table
   Salt River West
   Tektite
   VIIS-Haulover
   VIIS-Mennebeck
   VIIS-Newfound
   West Little Lameshur
   White Point

column: year
description: survey year
Data Type: numeric
Mean: 2009.16666666667
Min: 2003
Max: 2017

column: month
description: survey month
Data Type: numeric
Mean: 7.20833333333333
Min: 5
Max: 11

column: replicate
description: replicate number/identifier
Data Type: numeric
Mean: 5266.5
Min: 1313
Max: 9790

column: replicatetype
description: type of replicate
Data Type: character
Unique Values:
   psu

column: simpson_index
description: simpsons index (D): this is inversely proportional to species diversity, hence why use reciprocal
Data Type: numeric
Mean: 0.191067997095031
Min: 0.061037087011113
Max: 0.581310306415651

column: simpson_diversity
description: simpsons diversity (1/D): this scales with species diversity
Data Type: numeric
Mean: 7.29799592861923
Min: 1.72025162630606
Max: 16.3834817316549