Boosting Coral Settlement for Reef Revival: A Layman’s Look at Recent Research

Christopher Howard
2 min readOct 31, 2023
Pros and Cons of Tank Vs. Natural Reef Conditioning

Brand New Article Out: October 2023

Our world’s coral reefs are facing a crisis due to climate adversities like ocean warming. To bounce back, young corals, known as larvae, need to find a home on the reef surfaces. However, they’ve been struggling. Aiding this settlement in controlled conditions, or aquaculture, can support reef revival. A fresh study examines how tiny microbes assist a specific coral type, Acropora tenuis, in finding their home.

Microbial Helpers

These coral babies were introduced to microbial communities living on concrete blocks, both in a natural reef and a tank. Scientists then analyzed these microbial neighbors after the corals settled, revealing a structured community with varying settlement levels.

  • Some microbial species, like Myxococcales and Granulosicoccus, were found to be like friendly neighbors, helping the young corals settle.
  • A known friend, Pseudovibrio denitrificans, was also spotted, previously recognized for aiding coral settlement.
  • However, not all microbes are friendly; some, like Reichenbachiella agariperforans, weren’t welcoming to the coral younglings.

Microbial Neighborhood Transition

As the microbial community aged, new members arrived, possibly setting the stage for friendly microbes to help coral babies settle.

Other Tiny Dwellers

Interestingly, certain types of algae, known to be good for corals, were abundant in friendly microbial neighborhoods. On the flip side, brown algae and tiny algae called diatoms, not so friendly to some coral types, ruled the less welcoming neighborhoods.

Tank Vs. Natural Reef: A Quick Glance

Tank Advantages

  • Discovering friendly microbes
  • Easy to control conditions

Tank Disadvantages

  • Microbes differed from natural reefs

Reef Advantages

  • Real reef vibes for coral babies
  • Finding natural friendly microbes like Pseudovibrio denitrificans

Reef Disadvantages

  • Tougher to control conditions
  • Harder access for studies and reef farming

Concluding Insights

This study illuminates how different tiny microbes can help or hinder coral settlement. Understanding these microbes better in both controlled and natural environments could significantly aid reef revival efforts, especially as climate change continues to challenge our reefs.

For a deeper dive into coral ecosystems and restoration, explore how corals manage in nutrient-scarce waters, the methods of coral gardening and fragmentation, the intricacies of sexual coral reproduction, the potential of Biorock Electro-Accretion, and a simplified explanation of coral bleaching and coral larval settlement.

Original Article

For those interested in the nitty-gritty, here’s the original article published in ISME Communications.

Abigail Turnlund (@SharkMicrobe) / X (twitter.com)

Inka Vanwonterghem (@InkaVw) / X (twitter.com)

Emmanuelle Botté (@BotteEmmanuelle) / X (twitter.com)

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Christopher Howard
Christopher Howard

Written by Christopher Howard

Engineer Christopher Howard melds technical expertise with a passion for marine conservation and artificial reefs during his round-the-world sailing journey.

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