@article {50493, title = {Islands of hydrologically enhanced biotic productivity in natural and managed arid ecosystems}, journal = {Journal of Arid Environments}, volume = {65}, year = {2006}, month = {April 1, 2006}, pages = {235-252}, abstract = {

The objective of this paper is to examine the spatial variability of islands of enhanced hydrologic
activity and its application to remediation of degraded arid and semi-arid ecosystems. Factors
causing high spatial variability of water in arid regions include precipitation, soil, physiography, and
vegetation. Inherent heterogeneity of arid lands causes areas of runoff and run-on which lead to
development of islands of hydrologically enhanced biotic productivity. These hydrologic islands are
observed at the individual plant scale as well as in large area patterns of banded vegetation, playettes and playas, and beaded drainage networks where run-on and infiltration stimulate vegetation
growth. To remediate degraded rangeland, it may be prudent to mimic nature by diverting water to
target areas to create patterns similar to natural islands of hydrologically enhanced biotic
productivity. Installation of structures such as water ponding dikes can promote changes to natural
vegetation patterns at a landscape scale.

}, keywords = {enhanced biotic productivity, heterogeneity, rangeland, remediation, run-on, runoff, water ponding dikes}, doi = {10.1016/j.jaridenv.2005.09.002}, url = {/files/bibliography/06-009.pdf}, author = {A. Rango and S. Tartowski and Andrea S. Laliberte and John Wainwright and A.J. Parsons} } @article {50812, title = {The utility of historical aerial photographs for detecting and judging the effectiveness of rangeland remediation treatments}, journal = {Environmental Practice}, volume = {5}, number = {2}, year = {2003}, month = {June 1, 2003}, pages = {107-118}, abstract = {

Aerial photos are a type of remote sensing data especially valuable for rangeland applications. This type of data has advantages that include relative ease of interpretation and acquisition, inexpensiveness, high resolution (1-2m), and providing a common reference for communication among those involved in rangeland management. Additionally, air photos are especially well suited for analysis of historical rangeland remediation treatments because acquisition of widespread aerial photographic coverage began during the 1930{\textquoteright}s. Several types of treatments are easily identified and monitored over time, including contour terraces, brush water spreaders, rootplow seeding, water ponding dikes, shrub removal by grubbing, and grazing restrictions. The use of aerial photos allows us the opportunity to recreate the management history of rangeland and to serve as a point of departure for involvement in more sophisticated satellite-based remote sensing systems.

}, keywords = {aerial photography, air photo archives, Civilian Conservation Corps, Jornada Basin, rangeland, remediation treatments, remote sensing}, doi = {10.1017/S1466046603031065}, url = {/files/bibliography/03-020.pdf}, author = {A. Rango and Kris Havstad} }