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Acacia gerrardii, the dominant Acacia tree in Ha'il region and Machar National Park, Saudi Arabia.

Acacia gerrardii, the dominant Acacia tree in Ha'il region and Machar National Park, Saudi Arabia.

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The xylophagous beetle, Steraspis speciosa, has infected Acacia forests in Saudi Arabia, causing significant damage and even leading to the death of several trees. In the Ha'il region, in the north of Saudi Arabia, an investigation of 13 study sites shows that the Acacia population is mainly composed of three species: A. gerrardii (90.3%), A. ehren...

Context in source publication

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... of the large surface area of Saudi Arabia and the climatic and environmental diversity, fourteen species in the Acacia genus were recorded by Migahed [27] in all of the country. The investigation of 13 wild Acacia populations in the Ha'il region shows the high dominance of Acacia gerrardii Benth., with a rate of 90.3% (Table 1; Figure 2). It is followed by Acacia ehrenbergiana Hayne and Acacia tortilis subsp. ...

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Citations

... However, since then until now, the rate of mortality has increased suddenly and has become alarming for forester communities. Alanazi et al. (2022) reported that the infection by Steraspis speciosa was a principal cause of the acacia tree population decline. They also reported that the infection concerned especially old trees; however, the infection rate decreased near the dams in Mishar Park. ...