Managing Ecosystems Sustainably
What Does ‘Sustainable Management’ Mean?
Sustainable management tries to meet human needs today without destroying the ecosystem’s ability to support life in the future. In tropical rainforests this often means slowing deforestation while keeping local economies running. In contrasting biomes such as the savanna or coral reefs, it means controlling tourism, agriculture and fishing so that wildlife can recover. You need to know one rainforest example and one strategy from a contrasting biome — choose them carefully and stick with the same case studies across all your essay answers.
Four common rainforest strategies are National Parks (Brazil has 76 national parks), agro-forestry (Indonesia, Costa Rica), selective logging (Sustainable Forestry Initiative, Brazil), and ecotourism (Costa Rica, Peru). Each tries to keep the canopy intact while the local economy still earns money.
National Parks and Zoning
Zoning within National Parks lets governments protect the most fragile areas while allowing controlled use elsewhere. Costa Rica protects nearly 25% of its territory in National Parks; the Tortuguero National Park has a strict no-entry zone for nesting green turtles, a buffer zone for guided tourism, and an outer zone of low-impact farming. The result is one of the highest tourism incomes in Central America — over US$4 billion in 2019 — with biodiversity still rising. Compare with Brazil’s indigenous territories: where indigenous peoples hold secure land rights, deforestation stays far lower than in the unprotected forest next door.
Agro-forestry and Selective Logging
Agro-forestry grows useful crops — coffee, cacao, fruit trees — under the shade of a partial forest canopy. The Sustainable Cocoa Programme in Ghana and Indonesia has shown agro-forestry plots can yield 70% as much cocoa as cleared monoculture while keeping 60% of original tree cover. Selective logging takes only mature, high-value trees and leaves the canopy intact. Schemes certified by the Forest Stewardship Council allow forests to be commercially used while ensuring regrowth — the FSC now certifies more than 150 million hectares globally.
Ecotourism is travel that funds conservation and benefits local people. About half of Costa Rica’s visitors come for nature-based holidays, generating jobs as park rangers, guides, lodge staff and farmers. Local people earn more by keeping the forest standing than by clearing it — a forest acre can earn US$300/year from ecotourism versus US$60/year from cattle. The country’s Payments for Ecosystem Services scheme adds further income, paying landowners to preserve forest. Forest cover has rebounded from 25% in 1985 to 60% today, an extraordinary reversal.
A Contrasting Biome: Savanna Conservation
You must use the same biome as in the ‘ecosystems’ lesson. We chose the African savanna, so the management example must come from there too. The Maasai Mara conservation programme in Kenya pays Maasai pastoralists to lease grazing land to wildlife conservancies. By 2024, more than 200,000 hectares were under community-managed conservancies, supporting around 25% of Kenya’s wildlife. Cattle still graze there, but rotated alongside zebra and wildebeest rather than competing for the same patches. Local Maasai now earn over US$8 million a year in lease payments, providing a strong incentive to keep land open. Wildlife corridors link the conservancies together to allow seasonal migration.
International Co-operation
Sustainable management is too big for any one country. The REDD+ programme (Reducing Emissions from Deforestation and Forest Degradation) channels money from rich countries to forest nations: Norway has paid Brazil over US$1.2 billion since 2008 for reduced Amazon deforestation. The CITES treaty bans trade in endangered savanna species like rhino horn and African elephant ivory. The 2022 Kunming-Montreal biodiversity framework set a global target of protecting 30% of the world’s land and oceans by 2030 — sometimes called ‘30 by 30’.
Strategies are not always successful. Costa Rica’s lush ecotourism can flip into over-tourism, with footpath erosion and disturbed wildlife at popular sites. National Parks may be ‘paper parks’ on a map but lack rangers to enforce protection — satellite data show illegal logging continues inside many Brazilian reserves. REDD+ payments have been criticised because they are easier to claim than to verify, and prices for stored carbon can swing wildly. Sustainable management therefore depends on enforcement and stable funding as much as on the policy itself.
Costa Rica’s forest cover rebounded from 25% in 1985 to 60% today — thanks to a national park network, Payments for Ecosystem Services that pay landowners to preserve forest, and an ecotourism economy that makes a standing forest worth more than a cleared one.