Frontier Fiji Marine Environmental Research - Frontier-publications ...

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Fish Biomass (Kg) 180 160 140 120 100 80 60 40 20 0 SOMO64 SOMO74 NYW064 NYW074 NWK064 NWK074 Region and Phase Figure 4. Box plot of biomass for surveyed fish for each region and time period in kg/m³ in order of longitude 4.4 Fish biodiversity Biodiversity of fish was calculated using the Shannon-Weiner (H’) formula. According to Carr et al. (2001), a natural population would be expected to fall between 1.5-3.5 H’. Here indices of fish biodiversity ranged from 0.0788 to 5.193, with the majority of sites exhibiting relatively low levels of biodiversity (Figure 5). There was no significant difference between the three regions (ANOVA, F=5.087, p=0.0125), or time period (ANOVA, F=0.589, p=0.448). 18
6 5 4 3 2 1 Fish Biodiversity (kg/m3) 0 SOMO64 SOMO74 NYW064 NYW074 NWK064 NWK074 Region and Phase Figure 5. Box plot of fish biodiversity per region and phase. 4.5 Trophic Group Abundance All fish species surveyed were assigned to one of the following six trophic groups: planktivore, piscivore, invertivore, herbivore, detritivore, corallivore. This was completed with FishBase using published food items and assigned trophic levels (Froese and Pauly 2004). 19
Page 1: Frontier Fiji Marine Environmental
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Page 6 and 7: ACKNOWLEDGEMENTS This report is the
Page 8 and 9: TABLE OF CONTENTS ACKNOWLEDGEMENTS
Page 10 and 11: 1. Introduction 1.1 Environmental a
Page 12 and 13: as rainforests, grasslands, mangrov
Page 14 and 15: coverage, fish data, invertebrate s
Page 16 and 17: 70 60 50 40 30 20 Hard Coral Covera
Page 20 and 21: Figure 6: Biomass for each trophic
Page 22 and 23: Figure 8: Abundance of key inverteb
Page 24 and 25: commercially important species whic
Page 26 and 27: 5.4 Invertebrate Abundance Inverteb
Page 28 and 29: investigate changes on a specific s
Page 30: Walters, C. Pauly, D. and Christens

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