Invasive marine algae & other marine invaders

Names and classification

Record type

threat

Kauaʻi occurrence and status

Recorded state

Active / site-specific

Threats and conservation

Pressure source

Introduced or nuisance marine species

Exposure pathway

Competition for space/light, habitat alteration and trophic disruption

Consequences

Overgrowth, altered benthic state and reduced native habitat function

Affected requirements

Coral settlement/growth, native algae/seagrass, reef food webs

Susceptibility

Nearshore reef, lagoon and submerged-vegetation systems

Reversibility

Site-scale control possible for some species; recolonization risk remains

Early warning indicators

Invasive cover/biomass; spread front; herbivore abundance; coral recruitment

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/national/habitat-conservation/shallow-coral-reef-habitat
• https://www.fisheries.noaa.gov/national/habitat-conservation/restoring-coral-reefs

Connected Atlas records

• Coral reef & colonized hardbottom ecosystem · Ecosystems
• Reef flat, backreef & lagoon mosaic · Ecosystems
• Macroalgal-dominated submerged vegetation ecosystem · Ecosystems
• Seagrass & rooted submerged-vegetation ecosystem · Ecosystems
• Sustainable fisheries & herbivore management · Threats & Conservation
• Invasive-algae control & herbivory restoration · Threats & Conservation