SBI3U Final Evaluation · Himalayan Alpine Ecosystem · Sidi Mohal · Mr. Beggs
Six species across three kingdoms, from ancient mosses to apex predators, in one of Earth's most extreme and biodiverse ecosystems.
Part 01, Species Profiles
This project looks at two species from each of three eukaryotic kingdoms (Plantae, Fungi, and Animalia), and the two species in each kingdom come from different phyla. Every organism is sorted into the full Linnaean classification system and given a two-part scientific name (its genus and species), the naming method created by Carl Linnaeus. Together, the six species cover a huge vertical range, from the forests lower on the mountains all the way up to the highest place on Earth where life can survive year-round.
The thin, papery leaves (called bracts) wrapped around the flower act like a tiny greenhouse, trapping heat around the bloom even when the air is below freezing. The plant’s thick, waxy leaves help it hold on to water during the dry Himalayan winter. Blooming at night may also protect it from the strong UV rays that hit the mountains during the day.
It provides nectar for high-altitude pollinators like rare alpine bees and moths. Scientists treat it as an indicator species, which means its health is a sign of how healthy the whole alpine ecosystem is. It is also sacred in Hindu and Buddhist traditions, offered at temples across the Indian Himalayas and known as the 'Lotus of Brahma.'
A major 2023 study (Hu et al., Cell) found that Takakia's DNA is changing faster than almost any other plant we know of as it adapts to climate change. Even though its fossils date back about 165 million years, it is still actively rewriting its own genetic code to keep up with the changing temperatures and UV light on the Tibetan Plateau.
It soaks up and stores water in alpine soils, which helps stop erosion on bare, rocky slopes. It also creates tiny habitats for small invertebrates and microbes. As a pioneer species, Takakia is often the very first thing to grow on freshly exposed rock, which matters a lot in a landscape where glaciers keep melting back.
The fungus’s spores infect ghost moth caterpillars living in the soil. It slowly eats the caterpillar from the inside out, replacing its body with fungus while the insect is still partly alive underground. In spring, a finger-like fruiting body bursts out of the caterpillar’s head and releases a new batch of spores. The host ends up completely mummified.
It helps control ghost moth caterpillar numbers in alpine meadows. It also makes a compound called cordycepin, which has been studied for boosting energy and the immune system, and has long been used in Tibetan and Chinese medicine for breathing problems, kidney disease, and tiredness. The downside is that it is now being harvested almost to the point of disappearing in many areas because it sells for so much money.
Ganoderma lucidum is a white-rot decomposer, which means it feeds on dead wood. It can break down both lignin and cellulose, the two tough materials that make up hardwood, and that is a difficult chemical job very few living things can manage. As it rots away a dead tree, it puts the carbon, nitrogen, and phosphorus locked inside back into the soil, where other forest species can use them again.
It plays a key role in recycling nutrients in Himalayan forests. Without decomposers like Reishi, dead wood would just pile up forever and the ecosystem would slowly run out of the minerals it needs. The chemicals it makes (triterpenoids and polysaccharides) have been studied for possible anti-cancer and immune-boosting effects at places like the Memorial Sloan Kettering Cancer Center.
Its very long tail (almost as long as its body) does two jobs: it helps the cat balance on steep rocky ledges, and it wraps around the face like a scarf while sleeping in freezing temperatures. Large nasal passages warm up the icy air before it reaches the lungs. Wide, fur-covered paws spread the cat’s weight so it doesn’t sink into the snow. Its thick, double-layered fur (up to 12 cm on the belly) traps a layer of warm air against the body.
The snow leopard is the top predator and an umbrella species in the Himalayas. By keeping the numbers of bharal (blue sheep), Himalayan ibex, marmots, and pikas in check, it stops them from overgrazing the fragile alpine plants. Because it needs such a large area to survive, protecting enough habitat for snow leopards automatically protects hundreds of other species that live alongside it.
Instead of using muscles alone, the spider jumps using hydraulic pressure: it quickly pumps its blood (hemolymph) into its legs to launch itself many times its own body length. Its eight eyes, set in two rows, give it almost 360° vision, and the two big front eyes work like zoom lenses. A thick covering of tiny hairs keeps it warm in near-freezing conditions where most other arthropods would die.
It is one of the only animals that lives permanently this high up. It eats springtails, small flies, and other tiny invertebrates that the wind blows up the mountain (this wind-carried food is called aeolian input). It depends completely on the wind for food, since almost no plants grow at this height. It sits at the top of this tiny wind-fed food chain and is itself sometimes eaten by high-altitude birds like choughs.
Part 02, In-Depth Comparison · Kingdom Animalia
A close comparison of Panthera uncia and Euophrys omnisuperstes. Their family lines split over 550 million years ago, yet they now share the same band of alpine habitat because each one evolved similar solutions to the same tough conditions, an idea called convergent evolution.
This in-depth comparison pulls together several SBI3U units at once. The two animals are placed using taxonomy and phylogeny; their bodies are examined as organized systems of specialized cells, tissues, organs, and organ systems that maintain homeostasis in a tough environment; their differences are traced down to specific genes, alleles, and mutations; and the traits they share are explained through natural selection, adaptation, speciation, and convergent evolution. The snow leopard's long tail and the spider's hydraulic legs are analogous structures (same survival job, completely separate evolutionary origins), not homologous ones.
| Feature | Chordata: P. uncia | Arthropoda: E. omnisuperstes |
|---|---|---|
| Skeleton Type | Endoskeleton (internal bones) | Exoskeleton (external chitin shell) |
| Growth Method | Continuous growth throughout life | Ecdysis, periodic molting to grow |
| Body Segmentation | Vertebral column; internal segmentation | Externally segmented body visible |
| Nervous System | Dorsal hollow nerve cord; complex brain | Ventral nerve cord; ganglia |
| Circulatory System | Closed, blood flows in enclosed vessels | Open, hemolymph bathes organs directly |
| Appendages | 4 limbs (tetrapod body plan) | 8 jointed legs (arachnid) |
| Defining Feature | Notochord present at some life stage | Jointed appendages + exoskeleton |
| Evolutionary Strategy | Complexity and large body size | Species diversity (>1 million species) |
The snow leopard's most important genes deal with staying warm, using oxygen at altitude, and camouflage, while the jumping spider's stand-out genes are about its colour vision and its efficient metabolism. Two completely different genetic toolkits, shaped by the same tough mountain conditions.
Both species show convergent evolution: on their own, each one evolved the same kinds of solutions (warm coverings, cold-tolerant bodies, altitude-ready metabolisms) to the same mountain challenges, even though they aren't closely related and have totally different body plans.
The snow leopard sits at the top of the Himalayan food web and mainly hunts bharal (blue sheep), Himalayan ibex, marmots, and pikas. By keeping these plant-eaters in check, it stops them from overgrazing the fragile alpine plants, which matters because those plants grow very slowly and are easily damaged.
If the top predator disappears, the plant-eaters multiply, strip the plants, and speed up soil erosion on already unstable slopes. Because the snow leopard is an umbrella species, protecting enough land for it also protects hundreds of other species that live across the high mountains of Central Asia.
Between 5,000 and 6,700 m, almost nothing lives full-time. E. omnisuperstes is one of the few animals that does. It eats only springtails, small flies, and other tiny invertebrates that the wind carries up from lower down. It depends entirely on this wind-blown food (called aeolian input), because almost no plants grow this high.
It doesn’t move much energy through the ecosystem, but its role still matters: it is the top predator of an extreme, wind-fed food chain, and it is sometimes eaten by birds passing through at high altitude. As an indicator species, it shows how climate change and rising snowlines are shifting the very top edge of where life can survive.
Together, these two species illustrate the full vertical range of Himalayan animal life, from the mid-altitude rocky ranges where snow leopards hunt, to the near-lifeless rock and ice where jumping spiders scrape out a living at the roof of the world.
Part 03, Conservation
The Himalayan ecosystem faces serious pressure from several threats happening at once. Addressing them needs a combined approach that brings together climate action, support for local communities, and cooperation between countries.
The Himalayas are warming faster than the world average. If emissions keep rising, the region could warm by 1.5-2°C by 2050 and as much as 4°C by 2100. This causes what scientists call the escalator to extinction: as warmer conditions push plant and animal zones higher up the mountain, species like E. omnisuperstes, which already live at the highest survivable point, have nowhere left to go. Melting glaciers also threaten the rivers (Indus, Ganges, Brahmaputra) that more than a billion people downstream rely on (Kumar & Khanduri, 2024).
As wild prey become rarer, snow leopards start hunting livestock, which leads angry herders to kill them in return. Nepal's Snow Leopard Conservation Action Plan (2024-2030) names this conflict between people and wildlife as a major cause of population loss. With only 4,000-6,500 snow leopards left in the world, every killing counts. At the same time, Ophiocordyceps sinensis is being harvested almost to nothing because it is worth so much money, which damages the soil and the ghost moth populations the fungus needs to survive (IUCN, 2019).
Building roads, developing land, and expanding farming break up the once-connected alpine habitat that far-roaming animals like the snow leopard need to find prey and healthy mates. When habitat gets chopped into pieces, populations become cut off from one another. For a snow leopard, whose home range can be larger than 1,000 km², connected wildlife corridors are not a nice extra. They are really important for keeping the population healthy and genetically mixed across Central Asia.
Sustainability Initiatives
Instead of just fencing off single protected areas, the most effective Himalayan conservation tackles the root causes of habitat loss by linking wildlife protection with the wellbeing of local people.
Securing Livelihoods, Conservation, Sustainable Use and Restoration of High Range Himalayan Ecosystems. Executed by India's Ministry of Environment, Forests and Climate Change across four critical landscapes: Changthang (Ladakh), Lahul-Pangi (Himachal Pradesh), Gangotri-Govind (Uttarakhand), and Khangchendzonga (Sikkim).
The main idea is simple: human security = wildlife security. If local people have other ways to earn money (eco-tourism, crafts, sustainable farming), they graze fewer animals, cut less firewood, and have less reason to kill leopards. The project brought in clean energy (small hydro and solar) for processing goods, and trained communities to harvest sustainably and sell their medicinal plants directly, instead of losing most of the profit to middlemen (UNDP).
Learning from India's SECURE Himalayas project, Nepal's 2024-2030 plan moves the focus away from just research and monitoring and toward working directly with communities and reducing conflict. It puts 35% of its budget into community work and easing conflict, and 26% into stopping illegal wildlife trade through better intelligence, law enforcement, and cooperation between countries.
Alongside these programs, the Snow Leopard Conservancy's Himalayan Homestays project sets up village eco-tourism where travellers stay with local families and experience traditional mountain life. Once a snow leopard is worth more to a herder alive (as something tourists pay to see) than dead, the herder's reason to protect it completely flips (Nepal Conservation Action Plan, 2024).
Conservation Benefits Beyond the Mountains
Ecological, Economic & Societal Impacts
The Himalayas contain 4 of the world’s 36 biodiversity hotspots and 60 of 200 global ecoregions. The Indus, Ganges, Brahmaputra, Yangtze, Yellow, and Mekong rivers all start here and supply fresh water to over a billion people. Healthy alpine plants, including Takakia moss and Saussurea, hold the soil in place and help control how that water flows downhill.
As the top predator, the snow leopard keeps plant-eaters in check → which prevents overgrazing → which keeps soil stable → which holds onto snowmelt water. Take the leopard out and that whole chain falls apart. In the same way, losing fungi like Ganoderma and Ophiocordyceps breaks the recycling of nutrients and harms the soil across the forest floor.
Species like Takakia moss and Euophrys omnisuperstes live right at the edge of what is survivable, so they act like early-warning alarms for the whole ecosystem. By tracking where they live and how their DNA is holding up, scientists can spot major changes before it is too late to fix them.
Many Himalayan species make chemicals with real medical value: cordycepin (Ophiocordyceps), triterpenoids and polysaccharides (Ganoderma), and anti-inflammatory compounds (Saussurea obvallata) have all been studied for use in medicine. Every species that goes extinct erases unique genetic information, and possible cures, for good.
Less than 25% of the Eastern Himalayas' natural habitat is still intact, and around 163 native species are now globally threatened. Every species we lose wipes out millions of years of evolution, along with discoveries for science and medicine that we can never get back. The problem is urgent and cannot be undone.
The Himalayas are not just a far-off wilderness. They are a life-support system for billions of people and an irreplaceable store of biodiversity. Protecting them, by tackling both climate change and the money pressures on local communities, is one of the biggest conservation challenges of this century.
References