Nalini Nadkarni and the science of cloud forest canopies

The story of Nalini Nadkarni: the ecologist who studies canopy life in cloud forests is about a simple change in perspective. Nadkarni made the upper forest a place of close scientific observation rather than inaccessible decoration.

Her career has linked field ecology with conservation, making her one of India’s most visible advocates for evidence-based forest management. As executive director of ATREE, the Ashoka Trust for Research in Ecology and the Environment, she works where long-term research must also connect with policy and local communities.

A career among the tree crowns

Nalini Nadkarni trained as an ecologist, but much of her distinctive work has been carried out above the usual field horizon. Her research on tropical and montane forests placed the canopy at the centre of ecological observation, where light, water, animals and plants interact in ways that ground surveys can miss.

Her work in India’s Western Ghats helped establish canopy science as a credible field rather than an occasional expedition. Tree-climbing, rope access and elevated platforms allowed researchers to record life in the crowns with greater care, while permanent plots made observations comparable through time.

The forest canopy is not merely a geographical zone. It forms a shifting habitat of leaves, branches, mosses, epiphytes and cavities. Nadkarni’s approach showed that studying only trees, trunk measurements or animals seen from below produces an incomplete picture of tropical biodiversity.

Seeing the forest as a laboratory

Cloud forests develop in cool, humid environments where vegetation is frequently wrapped in mist. Moisture settles on leaves and branches, while fog interception can supplement rainfall. This creates unusual conditions for fungi, ferns, orchids, insects and birds, many of which live much of their lives among the crowns.

Nalini Nadkarni helped make such environments accessible to scientific study. Canopy platforms, suspended walkways and rope systems enabled direct observations of flowering, fruiting, feeding and reproduction. Surveys of fallen leaves and tree seeds could reveal some forest processes, but they could not reproduce the view of organisms occupying the upper layers.

That viewpoint exposes relationships concealed by a ground-level survey. Epiphytes compete for light and nutrients; insects feed on leaves and flowers; birds disperse seeds; and tree crowns create shelter from predators and weather. Canopy diversity is therefore connected to forest health, not simply to the number of trees present.

Why cloud forests matter

The Western Ghats are one of the world’s major biodiversity hotspots, containing numerous species found nowhere else. Their montane and wet evergreen forests occupy a narrow belt along the mountain chain, while agriculture, plantations, roads and grazing pressures threaten their remaining habitat.

Cloud forests also perform important hydrological and climatic functions. Their vegetation intercepts moisture, limits soil erosion and stores carbon in woody biomass and soils. When these forests are cleared or fragmented, the effects extend beyond the loss of visible tree cover to altered water movement, microclimates and species distribution.

Nadkarni’s work has helped conservation bodies understand why these connected systems require protection across entire landscapes. Preserving individual trees is insufficient when the surrounding ridge, water source or movement corridor has been degraded. Effective management therefore depends on long-term ecological data as well as local knowledge of species and changing land use.

Bringing canopy science to the public

Nalini Nadkarni has communicated forest ecology through books, public lectures, educational programmes and collaborations with research institutions. This outreach matters because the practical consequences of ecological change are often discussed in technical language that can distance non-specialists from the science.

Her teaching offers a useful parallel with popular music: song lyrics show how repetition and rhythm can make an idea stick, while a field ecologist needs the same clarity without sacrificing precision. Clear explanations can reveal the reasoning behind a result instead of presenting conservation as a set of unsupported claims.

That approach fits the wider purpose of public science. The curated science links gather material for readers who want to connect canopy ecology with scientific method, critical thinking and the history of ideas.

Lessons from Australian forests

Near Cairns and the Daintree in far north Queensland, elevated walkways allow visitors to experience humid rainforest structure at a comparable scale. The Great Barrier Rainforest includes subtropical and montane forests shaped by Australian species, including Gondwanan lineages. They offer a useful comparison with the Western Ghats, although their tree communities and evolutionary histories differ.

In Sydney, schools and citizen-science groups regularly document plants and animals in urban bushland, revealing biodiversity beyond managed parks. Melbourne’s strong Landcare and community bush-care traditions provide another local model: volunteers combine field observation with habitat restoration and long-term monitoring.

Australian garden centres and bush-food markets feature drought-adapted eucalyptus and other native species, reflecting an ecological identity very different from tropical cloud forests. Meanwhile, carbon-accounting and certified-timber markets increasingly depend on measurable environmental outcomes. Nadkarni’s combination of field evidence and careful communication is relevant to both conservation policy and responsible land management.

What the canopy reveals

Nalini Nadkarni’s central achievement has been to make the upper layers of tropical forests visible as habitats worthy of sustained investigation. Canopy research complements ground surveys; it does not replace them. Together, they provide a more complete account of ecological relationships and ecosystem change.

Her career also demonstrates that effective conservation requires scientific institutions, policymakers and communities to work with evidence rather than assumptions. Local knowledge can guide questions and monitoring, while systematic research can test claims and reveal patterns that short visits cannot capture.

The practical takeaway is to read a forest as a vertical community: protect the whole tree and the connections between its layers, not only the visible trunk.