VTechWorks staff will be away for the Thanksgiving holiday beginning at noon on Wednesday, November 27, through Friday, November 29. We will resume normal operations on Monday, December 2. Thank you for your patience.

Browsing by Author "Conner, J."

Now showing 1 - 2 of 2
  • Biophysical and economic models for assessing impacts of change on grazingland ecosystems
    Souza, N.; Conner, J.; Stuth, Jerry (Campina Grande, Brazil: Asociación Latinoamericana del Caribe de Ingeniería Agrícola, 2001)
    This paper integrates three models to derive information on socioeconomic impacts of climatic conditions and management approaches for a typical South Texas ranch. The authors apply PHYGROW to simulate conditions on a South Texas cattle and goat ranch. POPMIX was used to simulate forage production with two cattle : goat ratios (to represent different management strategies). Simulation results, as well as two ten-year weather scenarios (30% and 50% drought years to simulate normal and dryer conditions), and estimated animal production and operating costs, were incorporated into a firm level income and policy simulator (FLIPSIM), to yield integrated predictions of socioeconomic impacts.
  • An interdisciplinary approach to valuing water from brush control
    Lemberg, B.; Mjelde, J.; Conner, J.; Griffin, R.; Rosenthal, W.; Stuth, Jerry (Herndon, Va.: Water Resources Association, 2002)
    This paper develops an integrated model to assess the viability of increasing water yields in the Frio River basin of Texas through brush control. The presented method accounts for the effect of brush control on forage productivity and water supply by incorporating ecological, hydrologic, and economic models. The simulation of water yields suggests that brush control would increase water yields on 35% of the land area, but the costs usually would exceed the financial benefits. The authors conclude that subsidizing brush control in the Frio basin is not a cost-effective policy at this time.