Can extension programs improve grazing management in rangelands: a case study in Australia

Abstract

A key challenge in reducing sediment moving from grazing lands into the Great Barrier Reef in Australia is to encourage beef cattle producers to improve management practices. Excessive grazing pressures cause land degradation, leading to both increased sediment runoff and lower future profits. Although higher grazing rates may be possible (and profitable) in better seasons, slow rates of adjustment to poorer seasons can lead to overgrazing and negative impacts on land condition. For policymakers the challenge is to find mechanisms that encourage or signal producers to be more precise in their management and avoid overstocking. Some of the most common options include extension programs, grant programs that use financial incentives, and regulation. In this paper we outline a conceptual framework that shows why extension may be a more powerful driver of management change than incentive programs, and then test this through an evaluation of a case study program conducted with beef cattle producers in catchments of the Great Barrier Reef, Australia. The pathway involving landholders to implement management change was through improved efficiency and productivity, as these are the issues that drive ongoing participation in broader environmental programs. The results present multiple lines of evidence to infer positive outcomes of an extension program in terms of changed management practices, which may be expected to generate improved productivity and better water quality outcomes. These can be grouped into three key areas. First, outcomes show positive improvement relative to the Grazing Water Quality Risk framework for the Great Barrier Reef catchments, which is designed to assess the links between land management and water quality. This indicates that resource condition is likely to improve and sediment emissions should be reduced over time. A second outcome is increased landholder engagement and improved understanding of their business and engagement in future programs, which should underpin ongoing adoption. A third outcome is improved management of risk and developing the skills to do this through data collection and monitoring, which should improve management responses in drought years.

Coupling Remote Sensing with a Process Model for the Simulation of Rangeland Carbon Dynamics

“…Conservation practices such as prescribed grazing management, grassland restoration, removal of invasive species, and upgrades of rangeland infrastructure can enhance rangeland greenness through the promotion of vegetation growth, increased biodiversity and resilience, reduced risks of wildfires, and improved water supply (Rolfe et al, 2021;Schmelzer et al, 2014;Silverman et al, 2019), while practices that lead to rangeland degradation can cause reduced rangeland greenness (Paudel & Andersen, 2010;Smet & Ward, 2005). Unfortunately, distinguishing management effects from climate variability on rangeland greenness can be challenging (Li et al, 2018), especially when there is a lack of detailed temporal information of grazing management (i.e., timing, intensity, and duration) and vegetation composition from most of the sites.…”