What place for livestock on a re-greening earth?
This paper contemplates the role of livestock and livestock management in providing helpful ecosystem services, “re-greening the earth,” through a literature review considering both the well documented injurious and highly beneficial outcomes of ruminants on landscapes.
Origin, Persistence, and Resolution of the Rotational Grazing Debate: Integrating Human Dimensions Into Rangeland Research
This paper examines the origins of the “rotational grazing” debate in range management and suggests that discrepancies between scientific findings and manager experience can be rectified through a context of “complex adaptive systems” where social and biophysical factors are considered as well as experimental evidence. The paper mistakenly equates the work of Allan Savory with rotational grazing and demonstrates the author’s lack of deep understanding on the issue.
Multi-paddock grazing on rangelands: Why the perceptual dichotomy between research results and rancher experience?
This paper explores how perceptions differ among rangeland managers who have effectively used multi-paddock grazing systems and the research scientists who have studied them.
A global assessment of Holistic Planned Grazing™ compared with season-long, continuous grazing: meta-analysis findings
This paper performs a “quantitative meta-analysis” of twenty-one grazing studies that are claimed to represent Holistic Planned Grazing (HPG) in a comparison with performance data from year long continuous grazing. The paper finds no significant difference in plant basal cover, plant biomass and animal performance and thus refutes claims that HPG is superior in those areas. It does not say it is inferior, only that there is no meaningful difference. There is a thorough rebuttal to this paper.
Who’s afraid of Allan Savory? Scientometric polarization on Holistic Management
This paper uses “scientometrics” to understand the structure of science on Holistic Management (HM) to better understand the controversy underlying it. Results show that those who take a positive position on Holistic Management are those doing farm-scale (rather than experimental) work in dry climates.
Soil Carbon Sequestration in Grazing Lands: Societal Benefits and Policy Implications
This paper from 2010 is a compilation of previous studies on grazing lands and carbon drawdown which themselves date from the 1990s. It shows that grazing lands/rangelands are major stores of terrestrial carbon, occupying approximately 3.6 billion hectares and accounting for about one-fourth of potential carbon (C) sequestration in world soils. Drawdown rates via grazing and on restored semi-arid savanna are reported to be as high as 2.75 tons per hectare per year.
GHG Mitigation Potential of Different Grazing Strategies in the United States Southern Great Plains
This paper demonstrates that enteric emissions (methane) from cows are not a climate impediment when the animals are managed in a way that builds soil, thus, capturing carbon. Specifically, using a life cycle assessment that weighs emissions against sequestration, it calculates a net drawdown of approximately 2 tons of carbon per hectare per year (0.8 tons per acre per year) after a conversion from heavy continuous to multi-paddock grazing.
Emerging land use practices rapidly increase soil organic matter
This paper studies three farms converted from cropland to management intensive grazing. “Farms accumulated C at 8.0 Mg ha−1 yr−1, increasing cation exchange and water holding capacity by 95% and 34%, respectively.”
Potential mitigation of midwest grass-finished beef production emissions with soil carbon sequestration in the United States of America
This partial life cycle assessment (LCA) compared two grazing management strategies: 1) a non-irrigated, lightly-stocked, high-density system (MOB) and 2) an irrigated, heavily-stocked, low-density system (IRG). Results indicated that when soil carbon sequestration (SCS) potential was included, each grazing strategy could be an overall sink, with the MOB system found to have greater SCS than the IRG system.
The Need for a New Approach to Grazing Management – Is Cell Grazing the Answer?
This paper investigates the comparative vegetative impacts of cell grazing and continuous grazing on three properties in Australia during the 1990s and finds cell grazing superior in all measured parameters, including plant basal diameters, most desirable species, contribution to dry weight, and percentage ground cover. It is reasoned that these vegetative impacts may have long-term benefits with respect to ecosystem function, including erosion control, nutrient cycling, hydrological function and the stability of animal production.
