. Eighty years of vegetation and landscape changes in the Northern Great Plains : a photographic record . Shrubs and Trees. Salix exigua, Shepherdia argentea, Rosa woodsii, Symphoricarpos occidentalis, Populus deltoides, Populus trichocarpa, Populus angustifolia, Juniperus scopulorum Synopsis During the span of 82 years, shrubs have increased in den- sity and grown in height and diameter along the ridges, ridgetops, and creek bottom. Pinus ponderosa has increased along the distant ridge since 1917. In the 1998 photo, Melilotus officinalis has invaded the uplands. The Shepherdia canadensis list
. Eighty years of vegetation and landscape changes in the Northern Great Plains : a photographic record . Shrubs and Trees. Salix exigua, Shepherdia argentea, Rosa woodsii, Symphoricarpos occidentalis, Populus deltoides, Populus trichocarpa, Populus angustifolia, Juniperus scopulorum Synopsis During the span of 82 years, shrubs have increased in den- sity and grown in height and diameter along the ridges, ridgetops, and creek bottom. Pinus ponderosa has increased along the distant ridge since 1917. In the 1998 photo, Melilotus officinalis has invaded the uplands. The Shepherdia canadensis listed by Phillips as common on hillsides was identi- fied as Shepherdia argentea in 1999. A wheat pasture occupies the plateau in the center right of the 1998 picture. A soil slump is present just below the ridge on the center plateau in 1959. This slump is even more apparent in 1998. Near the center of the 1998 photo, just below the shrub line, is a second soil slump. This slump has in- creased in size since first being photographed in 1959. Overall, this series of photographs shows a general increase in shrubs, trees, and vegetative cover, with the exception of the soil slumps.
Size: 2680px × 1865px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, booksubjectbotany, booksubjectgrasses, booksubjectlandscape
