Spain's diverse geography—latitude, altitude, oceanic influence—creates a remarkable variety of biomes. Here's a classification by ecological zone:
Where: Southern & eastern Spain (Andalusia, Valencia, Catalonia, Murcia).
Climate: Hot, dry summers; mild, wet winters.
Vegetation: Evergreen sclerophyllous trees—holm oak (encina), cork oak (alcornoque), Aleppo pine. Understory: shrubs (mastic, rockrose), herbs, wildflowers.
Where: Northern/northwestern Spain (Galicia, Asturias, Basque Country, Pyrenees foothills).
Climate: Oceanic—mild year-round, ample rain, no dry season.
Vegetation: Deciduous broadleaf—oak (roble), beech (haya), chestnut, birch, maple. Rich understory.
Where: Widespread in drier lowlands, coastal slopes, abandoned farmland.
Vegetation: Dense, low, drought-adapted shrubs—kermes oak, strawberry tree, juniper, rosemary, thyme, lavender, gorse, broom. Fire-adapted.
Where: Central (La Mancha) and Southeast (Ebro Valley, parts of Murcia/Almería).
Climate: Hot summers, cool winters, low rainfall (300–500 mm).
Vegetation: Drought-resistant grasses (esparto), scattered shrubs (saltbush, sage), small trees (almond, olive).
Where: Tabernas Desert (Almería)—Europe's only true desert. Also Cabo de Gata.
Climate: <200 mm rain, high evaporation, extreme summer heat.
Vegetation: Sparse—succulents, halophytes, ephemerals. Iconic film location (spaghetti westerns).
Where: Mountain ranges—Pyrenees, Cantabrian, Sierra Nevada, Sistema Central, Iberian System.
Zonation:
Where: Above treeline (~2,200–2,500 m in Pyrenees, ~2,800 m in Sierra Nevada).
Vegetation: Short grasses, sedges, alpine wildflowers (gentians, saxifrages), mosses, lichens. Snow-covered months.
Spain hosts >50% of EU's habitat types—making it a biodiversity hotspot.