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Invasive Algae. Coral Reef Degradation. Problems. Competes for crevices housing wildlife, can cover and shadow out corals. Uses nitrogen provided by coral to reproduce. Growth at 10\% increase over coral in last year. All these lead to the degradation of coral reef and their ecosystems.

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invasive algae

Invasive Algae

Coral Reef Degradation

problems
Problems
  • Competes for crevices housing wildlife, can cover and shadow out corals.
  • Uses nitrogen provided by coral to reproduce.
  • Growth at 10% increase over coral in last year.
    • All these lead to the degradation of coral reef and their ecosystems
the algae
The algae
  • Kappaphycus alvarezii
  • Gracilaria salicornia
  • Caulerpa brachypus
kappaphycus alvarezii hawaii
Kappaphycus alvareziiHawaii
  • Red algae
  • Extremely high growth rates, doubling in 15-30 days
  • Branches usually irregularly arranged, 3 - 18 cm long
  • Dominating the changing marine ecology
gracilaria salicornia hawaii
Gracilaria salicorniaHawaii
  • Red algae
  • Intertidal to subtidal 4 meters deep, attached to limestone and basalt substrates
  • Introduced to Kane‘ohe Bay and Waikiki in the 1970’s
  • Propagate sexually as well as asexually
caulerpa brachypus pacific florida
Caulerpa brachypusPacific (Florida)
  • Green algae (dark to light green in color)
  • Branches, feather-like, flattened, and upright, 3 - 10 cm high
  • Small patches grow in sandy areas of tidepools and reef flats
  • Has been designated a U.S. Federal Noxious Weed and currently prohibited in the U.S
current projects
Current Projects
  • Coral Reef Assessment and Monitoring Program (CRAMP)
    • Founded in 1998 in Hawaii to monitor long-term changes in coral reef benthic communities.
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