Banded vegetation-dune development during the Medieval Warm Period and 20th century, Chihuahuan Desert, New Mexico, USA. Weems, S. L. & Monger, H. C. Ecosphere, 3(3):10.1890/ES11–00194.1, 2012. ![Banded vegetation-dune development during the Medieval Warm Period and 20th century, Chihuahuan Desert, New Mexico, USA [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex With the advent of systematic high-resolution satellite photography, striking geometric shapes of banded vegetation several km2 in size, but not apparent from the ground, have been documented for many areas of the arid and semiarid world. Banded vegetation, in which dense perennial vegetation alternates with bands of bare soil may originate from geomorphic processes, ecological self-organization, or human land use. In the Chihuahuan Desert of New Mexico prominent arc-shaped bands of vegetation and dunes occur along the contact of a piedmont slope (bajada) and basin floor. The origin and chronology of this banded vegetation-dune complex was investigated using early aerial photography (1936?1942), landscape photography (1918), vegetation and soil surveys (1858, 1918), soil stratigraphy, 13C/12C ratios, and 14C dating. These methods reveal two periods of eolian deposition. The first began in the Medieval Warm Period (ca. AD 900?1300) and was followed by a period of landscape stability during the Little Ice Age (ca. AD 1500 to 1850). The second began in the late-1800s when widespread desertification occurred throughout the American Southwest. Banded vegetation was initiated after formation of erosional scarplets that functioned as obstacles upon which eolian sand accumulated, thus becoming a dam to overland flow and causing strips of vegetation to form. Banded vegetation in this study is an emergent pattern produced by a coupled ecologic-geomorphic-climatic system. The stratigraphic record produced by this system enables us to compare current ecological responses to climate change with baseline prehistorical responses to climate change.
@article{weems_banded_2012,
title = {Banded vegetation-dune development during the {Medieval} {Warm} {Period} and 20th century, {Chihuahuan} {Desert}, {New} {Mexico}, {USA}},
volume = {3},
url = {http://dx.doi.org/10.1890/ES11-00194.1},
doi = {10.1890/ES11-00194.1},
abstract = {With the advent of systematic high-resolution satellite photography, striking geometric shapes of banded vegetation several km2 in size, but not apparent from the ground, have been documented for many areas of the arid and semiarid world. Banded vegetation, in which dense perennial vegetation alternates with bands of bare soil may originate from geomorphic processes, ecological self-organization, or human land use. In the Chihuahuan Desert of New Mexico prominent arc-shaped bands of vegetation and dunes occur along the contact of a piedmont slope (bajada) and basin floor. The origin and chronology of this banded vegetation-dune complex was investigated using early aerial photography (1936?1942), landscape photography (1918), vegetation and soil surveys (1858, 1918), soil stratigraphy, 13C/12C ratios, and 14C dating. These methods reveal two periods of eolian deposition. The first began in the Medieval Warm Period (ca. AD 900?1300) and was followed by a period of landscape stability during the Little Ice Age (ca. AD 1500 to 1850). The second began in the late-1800s when widespread desertification occurred throughout the American Southwest. Banded vegetation was initiated after formation of erosional scarplets that functioned as obstacles upon which eolian sand accumulated, thus becoming a dam to overland flow and causing strips of vegetation to form. Banded vegetation in this study is an emergent pattern produced by a coupled ecologic-geomorphic-climatic system. The stratigraphic record produced by this system enables us to compare current ecological responses to climate change with baseline prehistorical responses to climate change.},
number = {3},
journal = {Ecosphere},
author = {Weems, Stacey L. and Monger, H. Curtis},
year = {2012},
keywords = {LTER-JRN, Little Ice Age, Medieval Warm Period, article, carbon isotopes, climate change, desert geomorphology, emergence, journal, object-based image analysis, positive feedback mechanisms, soil radiocarbon dating},
pages = {10.1890/ES11--00194.1}
}
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In the Chihuahuan Desert of New Mexico prominent arc-shaped bands of vegetation and dunes occur along the contact of a piedmont slope (bajada) and basin floor. The origin and chronology of this banded vegetation-dune complex was investigated using early aerial photography (1936?1942), landscape photography (1918), vegetation and soil surveys (1858, 1918), soil stratigraphy, 13C/12C ratios, and 14C dating. These methods reveal two periods of eolian deposition. The first began in the Medieval Warm Period (ca. AD 900?1300) and was followed by a period of landscape stability during the Little Ice Age (ca. AD 1500 to 1850). The second began in the late-1800s when widespread desertification occurred throughout the American Southwest. Banded vegetation was initiated after formation of erosional scarplets that functioned as obstacles upon which eolian sand accumulated, thus becoming a dam to overland flow and causing strips of vegetation to form. 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