Victoria Falls Biome: Tropical Savanna & Riverine Fringe

The Victoria Falls area sits in the tropical savanna biome (Aw), with a distinctive riverine/riparian fringe created by the falls' perpetual spray.

Tropical Savanna (Matrix)

• Climate: Wet summer (Nov–Mar, 600–800 mm), dry winter (Apr–Oct). Avg temp 18–28 °C.
• Vegetation: Grasses (Themeda, Hyparrhenia, Heteropogon) + scattered trees (Acacia, Combretum, Terminalia, Colophospermum mopane).
• Fire: Seasonal burns maintain grassland; suppress woody encroachment.
• Fauna: Elephant, buffalo, impala, kudu, zebra, giraffe, lion, leopard, wild dog, 400+ birds.

Spray Zone / Rainforest Fringe (Microbiome)

• Width: 50–500 m from lip, depending on wind & flow
• Climate: Perpetual mist, high humidity, moderated temps
• Flora: Ficus capensis, Trichilia emetica, Phoenix reclinata, Adiantum ferns, Selaginella — species typical of wetter Congo basin, not savanna
• Unique: "Victoria Falls rainforest" — relictual, fragile, high endemism (e.g., Hibiscus calyphyllus var.)

Key Tree Species

• Baobab (Adansonia digitata): Iconic, massive, water-storing
• Mopane (Colophospermum mopane): Dominant woodland, butterfly host, protein-rich leaves
• Acacia (Senegalia, Vachellia spp.): Thorny, nitrogen-fixing, browse for giraffe/elephant
• Ilala Palm (Hyphaene petersiana): Fruits for elephants, wine for humans

Conservation Pressure

Invasive Lantana camara, elephant browsing pressure (confined by fences/human settlement), climate drying trend, spray zone shrinkage during low-flow years. Fire management critical for savanna/rainforest boundary.