Short answers, pulled from the story.
Shrubland is a plant community dominated by shrubs and also known as scrubland, scrub, brush, or bush. Regional varieties carry local names such as chaparral in California, matorral in Chile and Spain, maquis in France, fynbos in South Africa, and kwongan in Southwest Australia. The term "shrubland" itself was coined in 1903.
A shrub is formally defined in botany and ecology as a much-branched woody plant less than 8 metres high, usually with many stems. Tall shrubs are mostly 2-8 metres high, small shrubs 1-2 metres high, and subshrubs less than 1 metre high.
Shrubland species show adaptations including heavy seed production, lignotubers, and fire-induced germination. Lignotubers are woody swellings at the stem base that store nutrients and allow rapid resprouting after fire. Fire-induced germination means some seeds only open when exposed to heat or smoke.
Yes. Shrubland may occur naturally or result from human activity such as logging or overgrazing that degrades former forest or woodland. When it is the product of human disturbance, the terms shrubbery or bushes are more commonly used rather than shrubland.
Shrubland may be unsuitable for human habitation because of the danger of fire. The fire adaptations of shrubland plants, such as fire-induced germination, mean these ecosystems are structured around burning, which poses significant risks to people living nearby.
Australia uses a descriptive system based on structural characteristics, plant life-form, height, and foliage cover of the tallest stratum. Shrubs of 2-8 metres are classed from closed-shrublands at 70-100 percent foliage cover down to tall open shrubland at under 10 percent cover. A parallel set of categories covers shrubs under 2 metres, ranging from closed-heath to low open shrubland.