Fishing pressure & herbivore depletion

Names and classification

Record type

threat

Kauaʻi occurrence and status

Recorded state

Active / fishery- and site-specific

Threats and conservation

Pressure source

Commercial, recreational and subsistence harvest where pressure exceeds sustainable levels

Exposure pathway

Removal of targeted fishes/invertebrates and functional guilds including herbivores

Consequences

Lower biomass, altered size structure and reduced ecological function

Affected requirements

Fish biomass, trophic structure, herbivory and coral–algal balance

Susceptibility

Nearshore reef fishes, invertebrates and reef communities

Reversibility

Often reversible with effective management if source populations and habitat remain

Early warning indicators

Catch/effort; biomass; size structure; herbivore abundance; spawning indicators

Conservation interventions

Implementation limits

Magnitude, exposure and trend are not assumed uniform across Kauaʻi; local evidence governs.

Sources and further reading

• https://www.fisheries.noaa.gov/pacific-islands/ecosystems/coral-reefs-pacific
• https://dlnr.hawaii.gov/wildlife/files/2026/03/FINAL-2025-SWAP.pdf

Connected Atlas records

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• Nearshore pelagic coastal-water ecosystem · Ecosystems
• Sustainable fisheries & herbivore management · Threats & Conservation
• Invasive-algae control & herbivory restoration · Threats & Conservation