02/09/2024
Traveled through a high elevation Pinyon-Juniper Forest between the high desert of northern Arizona and the south central Sonoran Desert. At first, a plain of grasses with sporadic Juniper, then Ponderosa forest underlaid by grasses, then dense Juniper in what be a mast year there were so many berries visible -even from the road, at speed. The dense juniper forest went for many miles, up and down mountains and only began to thin out as I traveled further south, where Sonoran species began to crop up among the junipers -most notably along the Salt River Canyon. There are different species of juniper in these mountains, mainly Juniperus monosperma (one-seeded juniper), J. osteosperma (Utah juniper), J. depeana (alligator juniper), J. communis (common juniper), and J. scopulorum (Rocky Mountain juniper). Juniper trees commonly grow in association with pinyon pine (Pinus edulis and P. monophyletic) between 3000 feet and 10,000 foot elevations. Fire, not surprisingly along roads, was evident in two or three spots along the route. Fire suppresses Juniper in favor of shrubs and grass -it is an effective means of control, but fire is a double edged sword. Juniper roots break up sandstones and other rock, shade out fibrous-rooted species, fostering erosion in an already erosion-prone region. On the other hand, juniper species provide a lot of wild-life value. The weather cloudy, snowing at high elevation, the bleached leaves of winter plants, and dark juniper makes these photos look as if they have an IG filter applied.