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Vanishing wetlands a danger to world economies – report

Wetlands, which sustain life across the planet, are disappearing faster than any other ecosystem

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by GILBERT KOECH

Nairobi17 July 2025 - 07:00
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In Summary


  • In Kenya, wetlands occupy three to four per cent of Kenya’s landmass, or about 3.45 million acres (14,000 hectares), fluctuating to as much as six per cent during the rainy season.
  • The country has a variety of wetlands, stretching from coastal and marine wetlands to inland freshwater lakes, rivers, dams, and swamps, as well as the saline lakes in the Rift Valley system, constructed wetlands in irrigation schemes and sewerage treatment systems, and the mountain bogs, peat, and glacier lakes.

Ondiri Wetlands./HANDOUT






Wetlands: A Race Against Time

Wetlands, the planet’s lifeline, are disappearing faster than any other ecosystem, with devastating consequences, a new report has shown.

The Global Wetland Outlook 2025: Valuing, Conserving, Restoring and Financing Wetlands (GWO 2025) report warns that without urgent action, we could lose another 20 per cent of the world’s remaining wetlands by 2050.

The impact? An ecological and economic catastrophe—up to $39 trillion in benefits gone, affecting people, economies and nature worldwide.

“Wetlands bankroll the planet, yet we’re still investing more in their destruction than recovery,” said Dr Musonda Mumba, secretary general of the Convention on Wetlands. “Restoring them could unlock $10 trillion in benefits—but time is running out.”

The report, released Tuesday, is the most comprehensive assessment of wetlands to date, building on the 2018 and 2021 editions. Its release comes ahead of the 15th Meeting of the Conference of the Contracting Parties (COP15) to be held in Victoria Falls, Zimbabwe, from July 23 to 31.

Why Wetlands Matter

Despite covering just six per cent of the earth’s surface, wetlands provide ecosystem services valued at more than 7.5 per cent of global GDP—from clean water and food production to flood protection and carbon storage.

They also underpin millions of livelihoods across agriculture, aquaculture and tourism.

And yet, 0.52 per cent of wetlands vanish every year, eroding nature’s ability to fight climate change and biodiversity loss.

Since 1970, we've lost 22 per cent of all wetlands—an area the size of more than half a billion football fields. A quarter of what remains is in poor condition, with Latin America, the Caribbean, and Africa experiencing the steepest declines.

“Wetlands are not a side issue—they’re fundamental to the global water cycle and essential to billions of lives,” said Dr Hugh Robertson, chairperson of the Scientific and Technical Review Panel. “We know what works. What’s needed now is bold, sustained investment.”

The report provides a blueprint for reversing the trend, supported by global data, economic analysis, and case studies that demonstrate action is possible and cost-effective.

Kenya’s wetlands—ranging from coastal mangroves to Rift Valley lakes—cover three to six per cent of the landmass, depending on the season. These ecosystems are not just biodiversity hotspots; they are also economic engines that support tourism, farming, fisheries, and clean water.

Some are world-renowned and are recognised as national parks, Ramsar sites, World Heritage sites and critical bird habitats.

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