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Good practice Imported

Central Mangrove Wetland Land-Trust Conservation, Grand Cayman

Cayman Islands · Grand Cayman · See the Cayman Islands profile

Evidence: Descriptive / self-reported Top 41% 47/100 · Ask Evidence Copilot about this practice

The National Trust for the Cayman Islands is buying parcels of the 8,655-acre Central Mangrove Wetland -- the Caribbean's largest contiguous mangrove -- protecting habitat for 83% of the country's whistling-duck population against 64% private-ownership development risk.

8,655 acres
Total wetland area
1,032 acres (~12% of total)
Land protected by the National Trust
1,500+ (83% of national population)
West Indian Whistling-Ducks at the site
253-379 (~5% of global population)
Grand Cayman Parrots at the site
Central Mangrove Wetland Land-Trust Conservation, Grand Cayman

Details

Maturity
Scaling
Promoter
National Trust for the Cayman Islands; Cayman Islands Department of Environment
Period
1986-ongoing
Keywords
mangrove conservation, land trust acquisition, coastal wetland protection, storm buffering

Context

The Central Mangrove Wetland spans 8,655 acres across interior Grand Cayman, widely described as the largest remaining contiguous mangrove wetland in the Caribbean and covering roughly 30% of the island's land area; its evapotranspiration is credited with supplying about 40% of western Grand Cayman's rainfall.

Objectives

The National Trust for the Cayman Islands is acquiring parcels of the wetland to protect it against ongoing development pressure, alongside the government's 1986 Environmental Zone designation.

Activities

The Trust buys land through an ongoing acquisition programme funded partly by public 'Island Offset' donations, and now owns and protects 1,032 acres (about 12% of the total).

Results

A Key Biodiversity Areas factsheet documents internationally significant bird populations: at least 1,500 West Indian Whistling-Ducks (83% of the Cayman Islands' national population), 253-379 Grand Cayman Parrots (about 5% of the global population), and roughly 500 breeding pairs of Snowy Egret, Little Blue Heron and Tricoloured Heron.

Conclusions

64% of the wetland remains privately owned and at risk of clearing, and western Grand Cayman has already lost more than 70% of its mangrove habitat since the 1970s, so the land-trust model is protecting a globally significant site but has covered only a minority of it to date; the site also still lacks Ramsar designation despite advocacy.

Implementation
Indicative cost
Medium (€50k–€500k) — Funded through public 'Island Offset' donations; specific acquisition costs are not given in the reviewed sources.
Time to results
Long (> 3 years) — Ongoing acquisition since at least the 1986 zoning designation; about 12% (1,032 acres) is Trust-owned to date.
Staffing & skills
National Trust for the Cayman Islands (land acquisition, stewardship), Cayman Islands Department of Environment

Conditions for success

  • Continued public 'Island Offset' donations to fund incremental land purchases
  • Willing private sellers of wetland parcels
  • Legal protection (1986 Environmental Zone) to backstop both acquired and unacquired land

Common failure modes

  • 64% of the wetland remains privately owned and at development risk
  • The site still lacks Ramsar designation despite long-standing advocacy
  • Western Grand Cayman has already lost more than 70% of its mangrove habitat since the 1970s

Where it fits

Governance type
NGO land trust with government zoning backstop
Scale
island-wide wetland (8,655 acres)
Income level
high-income

Commonly funded by

Philanthropic / foundation funding

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Data sources

Where this practice's information was retrieved from, and when.

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