Wildlife of
Rio de Janeiro

Atlantic Forest evergreen and moist forests are the main native vegetation across Rio de Janeiro, especially in coastal mountains (lowland, submontane, montane). Many unique species; forests are fragmented near cities and industry.

Historically covered most of the state; today persists as substantial but fragmented blocks, especially in mountainous areas and protected units (largest remaining natural cover).

Seasonal and semideciduous Atlantic Forest formations occur in relatively drier inland/northern portions and rain-shadowed valleys, with more pronounced leaf drop and a more open canopy than coastal moist forest.

Patchy and localized, mainly inland/north-northwest and valley settings; much converted to pasture/agriculture.

High-elevation grasslands (mountaintop grasslands and scrub) above the montane forest belt on the highest massifs (e.g., Serra dos Orgaos and the Itatiaia region on/near state boundaries), with cold, windy conditions and shallow rocky soils.

Very limited, restricted to highest peaks and ridgelines (small, discontinuous patches).

Rivers draining to the Atlantic (including the Paraíba do Sul basin and many short coastal rivers), plus reservoirs, streams, and lagoons, support riparian forests, aquatic macrophytes, and migratory fish corridors.

Widespread as linear networks; condition ranges from relatively intact headwaters in mountains to heavily modified lowland channels and reservoirs.

Coastal wetlands associated with lagoons, floodplains, and estuaries, including marshes and mangrove-fringed lowlands; important for waterbirds, fisheries nurseries, and water filtration.

Concentrated on the coastal plain and around major bays/lagoons; often fragmented and under pressure from land reclamation and pollution.

Warm-temperate South Atlantic coastal and shelf waters, including sandy and rocky shores, bays (e.g., Guanabara Bay, Sepetiba Bay), nearshore reefs/rocky bottoms, and offshore shelf habitats supporting fisheries and marine megafauna migration routes.

Extensive along the entire coastline and across the continental shelf; heavily used near major ports/metros, less impacted offshore.

Evergreen Atlantic Forest on windward slopes and humid valleys (Serra do Mar/Serra dos Órgãos), with high canopy complexity, epiphytes, and endemic fauna.

Mixed Atlantic Forest mosaics (lowland to montane) including secondary forests regenerating around protected areas and rural landscapes.

Steep granite/gneiss massifs and escarpments driving sharp rainfall gradients and elevational zonation from lowland forests to cloud-forest conditions.

Rock walls and escarpments (common in Serra dos Órgãos and coastal headlands) providing nesting sites and specialized rupicolous vegetation.

High-elevation grasslands and scrub on exposed mountaintops with rocky soils and frequent mist/wind.

Coastal sandplain scrub and thickets on sandy coastal plains and dunes, with salt- and drought-tolerant plants and high plant endemism.

Short coastal rivers plus larger systems (notably Paraiba do Sul tributaries within the state) with critical headwaters in protected montane forests.

Coastal lagoons and larger lentic systems (e.g., Marica and other lagoon complexes), often brackish and ecologically linked to barrier beaches.

Small wetlands, borrow pits, and temporary waters on the coastal plain and in urban/peri-urban landscapes important for amphibians and birds.

Flooded lowlands, lagoon margins, and estuarine wetland mosaics supporting waterbirds and nursery habitat.

Fresh to brackish marshes along lagoon edges and floodplains, dominated by emergent vegetation.

Mangrove forests in sheltered bays and estuaries (notably around Guanabara Bay and Sepetiba Bay), providing nursery grounds and shoreline stabilization.

Estuarine mixing zones at river mouths and within major bays; highly productive but sensitive to pollution and dredging.

Coastal plains and embayments with strong land-sea connectivity (barrier systems, tidal flats where present, and coastal lagoons).

Long sandy beaches and barrier spits backing dune/restinga systems; important nesting/roosting for shorebirds where disturbance is low.

Rocky headlands and islands with tidepools and algal/invertebrate communities; common along parts of the Costa Verde and near offshore islands.

Continental shelf bottoms (sand/mud/rock) supporting demersal fish and benthic invertebrates; affected locally by trawling and port activities.

Pelagic waters beyond the nearshore zone used by migratory fish, seabirds, and marine mammals.

Off-shelf slope and deep-water environments beyond the continental shelf, less directly visible but part of the broader state offshore domain.

Major metropolitan areas (notably the city of Rio de Janeiro) with highly modified waterways, remnant forest patches, and intense coastal development.

Peri-urban expansion zones around metro regions where secondary forests, wetlands, and restingas are fragmented by housing and infrastructure.

Pasture, smallholder crops, and peri-urban horticulture in interior valleys and lowlands, often replacing seasonal forest and riparian habitats.

Localized commercial plantations (e.g., eucalyptus and other managed stands) in parts of the interior, contributing to habitat simplification where extensive.