The better conifers, usually including several pine species in the north and fir, with lesser numbers of pine and spruce, in the south, coexist with beech but tolerate poorer soils and tend to predominate at the highest elevations. Although they tend to have less continuous canopies than beech forests, they do not encourage undergrowth. Their needles, along with rapid decay of their softer dead wood, however, can create deep humus. The poorer quality lowland pines do well at elevations down to sea level and will tolerate certain conditions, although not overly poor drainage, in which the oak will not survive. Its woods usually have discontinuous canopies and allow dense maquis and other lower shrubs to flourish beneath them. True mixed woods, sometimes referred to as karst woods, occur at medium elevations. They are usually almost entirely deciduous but have wide varieties of species. The larger trees include maple, ash, beech, and oak, but these are vastly outnumbered. Intermediate varieties of hawthorne, dogwood, hazel, and cherry flourish among the larger trees, and hundreds of smaller plants, ranging from bushes, shrubs, and ferns to grasses and moss, provide ground cover. With a profusion of varieties in constant competition for available space and soil, those that do best in a particular soil mixture prosper in a given locality. Because the soil in the uplands relates closely to the base rock and the mountains were created by geologically recent folding that has exposed the edges of layered rock formations, there are abrupt changes in the basic surface rock. This is reflected immediately in mixed woods by equally abrupt changes in the species that appear. Of the more abundant smaller flora families, the daisy, pea, grass, pink, nettle, mustard, parsley, figwort, rose, buttercup, and lily groups has more than fifty species that can be found within Albania. Flowering plants flourish especially well in limestone areas where there are masses of vividly colored wild flowers during the springtime. Must less brilliant colors appear on serpentine outcroppings and, as is the case with the mixed woods, the difference is abrupt where limestone and serpentine are the surface rocks in closely adjacent areas. Wildlife Summer livestock grazing in the mountains and uncontrolled hunting reduced wildlife to insignificance. Some deer, wild boar, and wolves remain in the more remote forests. Chamois were plentiful in the area but are now extremely rare. Wild fowl, however, are abundant in the lowland swamps and lower forests. Minerals