Imagine a world teeming with life, yet 99% of it remains unseen. That's the core of a groundbreaking initiative to protect the microscopic world, and it's absolutely crucial for our planet's health. A recent paper unveils the first-ever microbial conservation roadmap, spearheaded by Professor Jack Gilbert, President of Applied Microbiology International (AMI).
This pivotal work, titled 'Safeguarding Microbial Biodiversity: Microbial Conservation Specialist Group (MCSG) within the Species Survival Commission of the International Union for Conservation of Nature (IUCN)', published in AMI's journal Sustainable Microbiology, marks a turning point.
In July 2025, the IUCN officially launched the MCSG, co-chaired by Professor Gilbert and Raquel Peixoto. This followed a May meeting where conservation experts and microbiologists convened to define the principles of microbial conservation.
Professor Gilbert emphasizes, "This is the first global coalition dedicated to safeguarding microbial biodiversity, the 'invisible 99% of life,' ensuring microbes are recognized as essential to the planet's ecological, climate, and health systems." He adds, "This reframes conservation, shifting from saving individual species to preserving the intricate networks of invisible life that sustain visible life—a paradigm shift towards planetary health. It also provides valuable insights into the microbial tools that can support conservation efforts, allowing us to use microbiology to solve the world's biggest problems."
But here's where it gets controversial... Microbes, despite their vital roles in regulating soil fertility, carbon storage, marine productivity, and host health, are largely absent from current conservation policies. Ignoring this microbial biodiversity jeopardizes climate resilience, food security, and ecosystem recovery. The MCSG aims to bridge this gap by integrating microbiology directly into IUCN's conservation framework, utilizing tools like Red List criteria, ecosystem assessments, and restoration programs to make microbes visible in policy, not just in science.
Over the past two years, a global network of microbiologists, ecologists, legal scholars, and Indigenous knowledge holders from over 30 countries has been established. Together, they've drafted the initial microbial conservation roadmap, outlining five core functions within the IUCN Species Conservation Cycle:
- Assessment: Developing Red List-compatible metrics for microbial communities and biobanks.
- Planning: Creating ethical and economic frameworks for microbial interventions.
- Action: Piloting restoration projects using microbial solutions (e.g., coral probiotics, soil carbon microbiomes, pathogen-resistant wildlife).
- Networking: Connecting scientists, culture collections, and Indigenous custodians worldwide.
- Communication & Policy: Launching campaigns like "Invisible but Indispensable" to engage policymakers and the public.
Funding from the Gordon & Betty Moore Foundation and support from AMI and ISME are fueling the first phase, which includes mapping microbial hotspots, developing conservation indices, and integrating existing microbial biobanks into a global archive.
Professor Gilbert notes that creating a conservation framework for microscopic life forms presented unique challenges. These included:
- Defining a "microbial species" for Red List purposes.
- Integrating genomic and ecological data into policy tools traditionally used for plants and animals.
- Overcoming the perception that microbes are too complex or resilient to need protection.
"Microbial conservation must contend with enormous unseen diversity and highly dynamic community structures that defy classical species concepts. Taxonomic instability, lack of long-term baselines, and the ethical handling of microbial samples (including Indigenous or human-associated microbiota) all require new definitions of 'loss', 'restoration', and 'rights of microbes'," Professor Gilbert explains.
And this is the part most people miss... The approval of the MCSG by the IUCN marked a significant milestone, officially extending global conservation efforts to microbes for the first time.
The group's future plans include:
- Producing the first Microbial Red List framework by 2027.
- Publishing global microbial hotspot maps integrating soil, marine, and host-associated ecosystems.
- Piloting conservation interventions (e.g., microbial bioremediation, coral-reef probiotics, soil carbon restoration).
- Ensuring microbial indicators are included alongside plants and animals in IUCN and UN biodiversity targets by 2030.
Long-term success hinges on sustained funding, expanding microbial monitoring networks, incorporating microbes into national biodiversity and climate policies (like "30 by 30" and One Health frameworks), promoting public microbial literacy, and integrating digital-twin and AI models to predict microbial responses to environmental change.
What are your thoughts? Do you think this initiative is crucial for the future of our planet? What challenges do you foresee in implementing these conservation strategies? Share your opinions in the comments below!
