57 New Foraminifera Species Identified in Global Review

A global review of tiny marine organisms — foraminifera — has identified 57 new living species. Three of these newly described species were discovered in New Zealand waters. The findings are published in the journal Micropaleontology.

How the Study Was Conducted

• The NZ-led research team used:
  • DNA sequencing, and
  • Detailed morphological (physical structure) analysis
• The study focused on foraminifera living in coastal and shallow offshore seafloor sediments.

Significance of Foraminifera

• Foraminifera have existed for millions of years.
• They are widely used as environmental indicators for:
  • Climate change
  • Sea level rise
  • Pollution and sediment impacts on coastal ecosystems
  • Reconstruction of ancient climate and earthquake/tsunami history
• Their preserved shells in sediment provide long-term environmental records.

Global Distribution Findings

• The review studied over 200 species.
• 33 species were found in regions far from where their fossils originated, likely due to accidental transport by ships.
• Regional diversity patterns:
  • Northwest Pacific (China & Japan): highest diversity with 74 species
  • Australia: 58 species
  • Arctic Ocean: 24 species
  • Antarctica: no species from these families recorded

About Foraminifera

• Tiny marine organisms similar to amoebae but with chambered shells.
• Average size: ~0.4 mm.
• Found in trillions in sediments of:
  • Estuaries
  • Harbours
  • Bays
  • Offshore areas up to 100 m depth
• Known diversity:
  • 9,000 living species
  • 40,000 fossil species

Why the Study Matters

• Accurate species identification strengthens:
  • Environmental monitoring
  • Climate reconstruction
  • Geological hazard studies
• The newly discovered species improve scientific understanding of:
  • Marine biodiversity
  • Ocean transport pathways
  • Ecosystem responses to environmental change

Source: Click HERE