In this blog, I provide an overview of the Flora and Fauna of Saudi Arabia. I suspect that most people have an image of Saudi as being a harsh, barren, desert wilderness (for good reason, I might add). The reality is rather more complex and nuanced. Saudi has very different types of landscape, for example vast desert plains, mountain ranges, escarpments and coastal regions, much of which is staggeringly beautiful. Within these very different landscapes, a range of flora and fauna not only survive, but indeed thrive.

Flora
Studying the flora of Saudi Arabia is a daunting task because of the vast size of the country. The general pattern of vegetation is increasingly understood, but an understanding of the exact distribution of the many species of flowering plant is still nascent. Approximately 3,500 species of plant have been recorded with nearly 1,000 of these species found in the southwestern region of Asir due to its relatively higher rainfall. Plants, in general, are xerophytic and mostly consist of dwarf shrubs and small herbs. There are few species of tree with ‘Date Palms’ being abundant in many parts of the Kingdom.

The east of Saudi Arabia often receives ‘Mediterranean depressions’ from November onward. The arrival of rain enables perennial plants to produce new shoots and the seeds of annual plants to germinate. These annuals grow rapidly completing their life cycle within a few weeks. By April/ May, the annuals will have flowered, seeded and died, and the perennials returned to a state of dormancy.
In desert areas, plant growth is mostly confined to geographical depressions, known as ‘wadis’.

The Rub’ al Khali desert has very little plant diversity, with about thirty-seven species of flowering plant recorded here, seventeen of which are only found around the fringes of the desert. There are virtually no trees, and the plants are adapted for desert life and include dwarf shrubs such as ‘Calligonum crinitum’ and ‘Saltbush’ and several species of ‘Sedge’. Around the fringes of the desert area are open woodlands with ‘Acacia’ and ‘Prosopis cineraria’.

The Asir Mountains in the southwest of Saudi and most of the western highlands of Yemeni border support a distinct flora which resembles that of East Africa. The highest parts are covered with cloud forests, southwestern Arabian montane woodlands which includes, on north-facing slopes, ‘Juniperus procera‘ and ‘Euryops arabicus’, draped with the lichen ‘Usnea articulata’, and on south-facing slopes, dwarf shrubs such as ‘Rubus petitianus’, ‘Rosa abyssinica’, ‘Alchemilla crytantha’, ‘Senecio’ and ‘Helichrysum abyssinicum’, with ‘Aloe sabae’ and ‘Euphorbia’ in the driest locations. Lower down, below 2,500m there are evergreen woodland and scrub dominated by ‘Olea Europaea Subsp’, ‘Cuspidata’ and ‘Tarchonanthus camphoratus’. Below 2,000m the vegetation is deciduous scrub-land with ‘Acacia’, ‘Commiphora‘, ‘Grewia‘ and succulent plants.

Located in the Ha’il Region, the Jabal Aja protected area situated in the Aja mountains is noted for its flora.

Jabal Aja has been designated an important area because of the richness of its plant life and the presence of many endemic and relict plant species. The Jabal Aja reserve offers refuge to plants from the Mediterranean and Irano-Turanian regions in an area that otherwise forms part of the greater Saharo-Arabian Region. Approximately 355 species of plant have been recorded in the Reserve, including the plants found in the adjoining desert area of An Nafud.
The plains have deep sandy-loam soils, and the dominant plant is ‘Haloxylon salicornicum’, with the desert ‘Gourd’ being common and ‘Asphodelus tenuifolius’ occurring in geographical depressions. The annual plants ‘Stipa tortilis’, ‘Picris cyanocarpa’ and ‘Anthemis’ appear after rains. On the thin slopes below the rocks, ‘Acacia gerrardii’ is dominant and is accompanied by other woody shrubs such as ‘Searsia’, ‘Periploca’, ‘Gymnocarpos’ and ‘Ephedra foliata’. In the wadis and runnels, more ‘Acacia gerrardi’ grows, along with ‘Lycium shawii’, ‘Pulicaria undulata’, ‘Ochradenus baccatus’ and ‘Zilla spinosa’.
Fauna
The fauna of Saudi Arabia has been more actively studied than the flora, not least because of interest in the larger mammals for the purpose of hunting and shooting. Birds and butterflies have also been studied, but less is known about other members of the animal kingdom.
Some of the larger mammals include the ‘Dromedary Camel’, the ‘Arabian Tahr’, the ‘Arabian Wolf’, the ‘Arabian Red ‘ and ‘Fennec’ Foxes, the ‘Caracal’, the ‘Striped Hyena’, the ‘Sand Cat’, the ‘Rock Hyrax’, and the ‘Cape Hare’. However, habitat destruction, hunting, off-road driving and other human activities have led to the local extinction of the ‘Striped Hyena’, the ‘Golden Jackal’ and the ‘Honey Badger’ in some localities. The Asir Mountains is where the critically endangered ‘Arabian Leopard’ is still to be found, and the broader region is also home to the ‘Hamadryas Baboon’ with colonies reaching as far north as Baha, Taif, and the suburbs south of Mecca.

The ‘Arabian Oryx’ used to roam over Saudi Arabia’s deserts and much of the Middle East, but by 1970, it had been hunted to extinction in the wild. However, a captive breeding programme had been initiated at the Phoenix Zoo in the United States in the 1960’s, and the ‘Oryx’ has since been successfully reintroduced into the wild in the Mahazat as-Sayd protected area in Saudi Arabia, a fenced reserve of over 2,200km2. It is also now present in the Uruq Bani Ma’arid protected area, where the ‘Goitered Gazelle’ and ‘Mountain Gazelle’ are also to be found.
The Sand Cat, which is the only member of the cat family to live exclusively in deserts, can be found in the western region of Saudi Arabia. Its paws are covered with thick hair to protect it from the hot ground, although it is essentially nocturnal.

Najd and Tabuk are where the ‘Arabian Wolf’ can be found. It is a solitary hunter and is persecuted by livestock owners. Only 2000 to 3000 animals are left in the wild putting them on the endangered animals list.

Birds native to Saudi Arabia include ‘Sandgrouse’, ‘Quails’, ‘Eagles’, ‘Buzzards’ and ‘Larks’ and on the coast, Seabirds include ‘Pelicans’ and ‘Gulls’. The country is also visited by migratory birds in spring and autumn including ‘Flamingoes’, ‘Storks’ and ‘Swallows’. ‘MacQueen’s Bustard’ is a resident species that are dependent on good vegetation cover, often being found in areas with dense scrubby growth with shrubs such as ‘Capparis spinosa’. The cliff faces of the Asir Mountains provide habitat for the ‘Griffon Vulture’, the ‘Verreaux’s Eagle’ and the small ‘Barbary Falcon’, and the juniper woodlands are home to the ‘Yemen Linnet’, the ‘Yemen Thrush’, the ‘Yemen Warbler’ and the ‘African Paradise Flycatcher’. The ‘Hamerkop’ nests in the Wadi Turabah Nature Reserve, the only place on the Arabian Peninsula at which it is found.




