Wildlife of
French Guiana

Primary Threats

• Gold mining-especially illegal artisanal mining (illegal artisanal miners) in remote interior basins-drives forest clearing, riverbank erosion, sedimentation, and chronic mercury pollution from amalgamation. It also brings camps, fuel leaks, and new access routes that increase hunting and wildlife trafficking; impacts are strongest in headwater catchments feeding major rivers (e.g., Maroni and Oyapock systems) and around interior protected-area boundaries.
• Mercury contamination linked to gold mining is the dominant pollution issue, bioaccumulating in aquatic food webs and affecting fish, river dolphins/manatees where present, and human communities reliant on river fisheries. Additional localized pollution includes urban wastewater and solid waste around Cayenne-Kourou-Matoury and along riverside settlements, plus fuel/oil leaks associated with river transport and mining logistics.
• Overall deforestation remains low compared with many Amazon regions, but habitat loss is locally significant near the coastal urban corridor and along accessible river/road axes. Clearing comes from mining sites, peri-urban expansion, small-scale agriculture, and supporting infrastructure, fragmenting lowland forests and riparian habitats important for wide-ranging species like jaguars and for wetland-associated fauna.
• Logging is regulated under French forestry frameworks, but selective extraction and associated tracks can fragment forest and increase access for hunting in previously remote areas. Pressure is greatest in managed forest zones outside strict reserves, where enforcement and monitoring over large areas are challenging.
• Subsistence and opportunistic hunting (bushmeat) affects large mammals and birds-such as peccaries, tapirs, primates, large cracids, and sometimes caimans-especially near villages, roads, and navigable rivers. Accessibility strongly determines impact; newly opened or informally used routes linked to mining and forestry can intensify hunting pressure.
• Trafficking and illegal collection can target parrots and other birds, reptiles/amphibians, and charismatic mammals. Risks are amplified by cross-border dynamics with Suriname and Brazil and by the difficulty of monitoring remote river routes and small air/sea transport channels.
• Coastal and estuarine fisheries (including shrimp and finfish) can exert pressure on stocks and cause bycatch, with concerns for marine turtles and coastal biodiversity. Enforcement against illegal, unreported, and unregulated fishing is challenging along a dynamic coastline influenced by sediment and shifting mudbanks.
• Roads and associated development along the coastal corridor (linking Cayenne, Kourou, and Saint-Laurent-du-Maroni) increase fragmentation, wildlife-vehicle collisions, and human access into forests. Energy and water infrastructure (including hydroelectric development and transmission corridors) can further modify habitats and facilitate new access in otherwise remote areas.
• Population growth and expansion of built-up areas around Cayenne-Matoury-Remire-Montjoly and Kourou increase land conversion, light/noise disturbance, waste, and pressure on nearby wetlands and coastal habitats. Informal settlement growth can outpace sanitation and planning, compounding localized ecosystem stress.
• Agriculture is relatively limited compared to neighboring countries but can be locally impactful on the coastal plain through land clearing, drainage of small wetlands, and edge effects on forest. Small-scale slash-and-burn plots and pasture creation can create persistent habitat mosaics and increase fire risk during drier periods.
• Hydrological alteration from dams/reservoirs and river modifications changes flood regimes, fish migration patterns, and aquatic habitat structure. In wetlands such as the Kaw marshes, any changes to water management and upstream sediment dynamics can affect breeding habitat for birds, caimans, and aquatic mammals.
• Sea-level rise and altered storm patterns threaten low-lying coastal zones, mangroves, and globally significant sea turtle nesting beaches by increasing erosion and inundation. Shifts in rainfall and river discharge can affect wetland seasonality, fish spawning cycles, and forest stress, potentially interacting with fire risk on the drier margins and during anomalous drought years.
• Disturbance is concentrated around accessible protected-area edges and popular sites (coastal nesting beaches, wetlands, and rivers used for recreation/transport). Boat traffic and tourism can disrupt sensitive fauna (e.g., nesting turtles, riverine wildlife) if not tightly managed; noise and activity near Kourou can add localized pressure to coastal ecosystems.
• Conflicts occur where settlements, small livestock holdings, and hunting dogs overlap with forest edges; jaguars and other predators may prey on domestic animals, triggering retaliatory killing. Crops near forest margins can attract wildlife, increasing tension and leading to opportunistic persecution.
• Disease risk is mainly a concern via increasing human and domestic-animal presence in forest-edge areas (spillover to wildlife and vice versa) and through stressors that can reduce resilience of small or isolated populations. Monitoring is difficult across remote landscapes, so emerging issues may be detected late.
• Invasive animals and plants are most problematic around towns, disturbed sites, and islands/riverbanks, where they can predate native fauna or outcompete native species. Feral cats/dogs, rats, and invasive insects can affect ground-nesting birds, reptiles, and urban-edge biodiversity; disturbed mining and construction sites can act as entry points for invasive plants.