Six Decades of Discovery: Celebrating Dato’ Henry Sackville Barlow’s Continuing Journey in Conservation

Some of the most important work in conservation happens quietly, over decades, long before anyone knows how valuable it will become. 

For Dato’ Henry Sackville Barlow, that journey began with a mountain, a notebook and thousands of moths.

In 1965, a young Cambridge undergraduate led an expedition up Mount Kinabalu. His team collected around 20,000 moth specimens, carefully recording the altitude at which each species was found. Decades later, those records became a remarkable window into a changing climate.

When researchers returned to the mountain more than 40 years later, they found that moth populations had shifted higher up the slopes as temperatures warmed. Dato’ Henry’s colleague's notebooks provided a rare historical baseline, helping scientists document one of the biological fingerprints of climate change in the tropics.

And the story continues. In July 2025, at 81, Dato’ Henry returned to Kinabalu to revisit those same sites, 60 years after his original expedition.

Six decades on, he was still in the field, continuing to learn from and contribute to the natural world he has spent his life studying.

Building the Foundations of Conservation

Dato’ Henry’s contribution extends far beyond Mount Kinabalu.

Between 1983 and 2011, he privately funded, edited and distributed all 18 volumes of The Moths of Borneo, the region’s definitive reference work for moth identification. Hundreds of species have since been formally described using this foundation.

At Genting Tea Estate, his home since 1971, decades of collecting have resulted in more than 20,000 carefully curated specimens representing over 3,000 species. He also established an arboretum containing around 135 of Peninsular Malaysia’s 161 dipterocarp species, including trees that have become increasingly rare in the wild.

Furthermore, Dato’ Henry has always believed that knowledge should be shared. He has freely distributed seedlings, opened the estate to conservation and heritage organisations, and is now working to establish the estate as a charitable research reserve in partnership with the South East Asia Rainforest Research Partnership (SEARRP).

A Contribution that Continues through Others

Dato’ Henry’s influence can be seen across Malaysia’s conservation and heritage landscape, including the Malaysian Nature Society, Badan Warisan Malaysia, the Roundtable on Sustainable Palm Oil, and CGM where he currently serves as the Chair of the Board of Directors.

Perhaps equally important is his investment in people. He has supported and mentored young Malaysian taxonomists, helping nurture the next generation of people who can document and understand Malaysia’s extraordinary biodiversity.

This is what makes his contribution so enduring. It is not simply about the specimens collected, books published or species documented. It is about creating the knowledge, institutions and people that allow the work to continue.

Looking Ahead

At Climate Governance Malaysia, we believe good climate governance depends on this kind of long-term thinking: evidence that guides decisions, institutions that endure, and people willing to do the work whose value may only become clear decades later.

Six decades after his first expedition up Mount Kinabalu, Dato’ Henry continues to embody that spirit of curiosity, stewardship and discovery. His journey is far from over, and his example continues to inspire the work around him.

Congratulations, Dato’ Henry, on six remarkable decades of discovery, conservation and service to Malaysia’s natural heritage. Your dedication continues to remind us that meaningful change is built patiently, through knowledge shared, people nurtured and nature protected.

As we celebrate this remarkable milestone, Climate Governance Malaysia looks forward to continuing this journey alongside you and inspiring others to play their part in safeguarding Malaysia’s natural heritage for generations to come.