Physical Sciences and Mathematics Commons^™

Medium-Term Impacts Of Grassland And Forestry Integration On The Environmental Performance Of A New Zealand Pastoral System, Michael B. Dodd, A. O. Hughes, Grant M. Rennie

IGC Proceedings (1997-2023)

At the IGC in 2008, we presented a paper outlining a project that aimed to improve the economic and environmental performance of a New Zealand hill country pastoral catchment farm system. This project was undertaken by engaging a wide group of sector stakeholders in visioning, modelling, planning and implementing significant land use change within a 296-hectare pastoral farm. In recognition of developing sectoral views of agricultural sustainability, the major changes involved pine afforestation, livestock production intensification, protection of waterways and indigenous bush restoration. The report in 2008 outlined the positive impacts on key farm systems and water quality performance indicators …

Implementation, Participation And Evaluation Of A Voluntary Water Quality Protection Program For Grazingland Owners And Managers, Mel R. George, J. M. Harper, S. R. Larson, R. E. Larsen, N. K. Mcdougald, D. J. Lewis

IGC Proceedings (1997-2023)

In 1990, California's range livestock industry began working with the state's water quality regulatory agency to develop a voluntary producer participation programme to protect water quality on privately owned grazinglands. In 1995 they implemented a voluntary programme of surface water protection supported by extension education and technical assistance conducted by University of California and USDA Natural Resources Conservation Service. Past studies have shown that education programmes are crucial to voluntary pollution control programmes in agriculture (EPA 1990) and that ranchers will change grazing management practices in response to extension education programmes (Richards and George 1996). The objective of this project …

Effect Of Long-Term Nutrient Management Strategies For Pastures On Phosphorus In Surface Runoff And Soil Quality, G. L. Mullins, J. P. Fontenot, G. A. Alloush, G. Johnson, D. G. Boyer, V. G. Allen, G. Scaglia

IGC Proceedings (1997-2023)

Manure, whether mechanically applied or deposited by grazing animals, has been associated with increased risk of non-point source pollution, especially phosphorus. This is especially true in areas where the industry, especially poultry, has been concentrated in geographical areas that are grain deficient, resulting in a reliance on imported grain for poultry feed. Intensification has resulted in the production of large quantities of poultry manure, within relatively small geographical areas. Surplus litter is typically land applied as a nutrient source or used as an animal feed. The objective of this project was to evaluate the effects of long-term nutrient management strategies …

Riparian Management In Intensive Grazing Systems For Improved Biodiversity And Environmental Quality: Productive Grazing, Healthy Rivers, S. R. Aarons, M. Jones-Lennon, P. Papas, N. Ainsworth, F. Ede, J. Davies

IGC Proceedings (1997-2023)

Within high rainfall intensive grazing systems of southern Victoria, riparian zones are often degraded due to vegetation clearing, stock access and inappropriate farm management. Streams in these landscapes often have poor water quality and reduced biodiversity due to degraded terrestrial and aquatic ecosystems. Improved management of riparian zones depends on developing tools and practices for integration into productive grazing systems. This paper describes the approaches used and the tools developed in the 'Productive Grazing, Healthy Rivers: Improving riparian and in-stream biodiversity' project

Riparian Management In Intensive Grazing Systems For Improved Biodiversity And Environmental Quality: Productive Grazing, Healthy Rivers, S. R. Aarons, M. Jones-Lennon, P. Papas, N. Ainsworth, F. Ede, J. Davies

IGC Proceedings (1997-2023)

Within high rainfall intensive grazing systems of southern Victoria, riparian zones are often degraded due to vegetation clearing, stock access and inappropriate farm management. Streams in these landscapes often have poor water quality and reduced biodiversity due to degraded terrestrial and aquatic ecosystems. Improved management of riparian zones depends on developing tools and practices for integration into productive grazing systems. This paper describes the approaches used and the tools developed in the ‘Productive Grazing, Healthy Rivers: Improving riparian and in-stream biodiversity’ project.

Understanding Livestock Grazing Impacts: A Decision Support Tool To Develop Goal-Oriented Grazing Management Strategies, S. J. Barry, K. Guenther, G. Hayes, R. Larson, G. Nader, M. Doran

IGC Proceedings (1997-2023)

Managing grasslands in the western United States has become much more complex over the last few decades. A century ago the goal was to survive as a livestock producer, and grassland management involved using forage effectively and overcoming obstacles such as predators and shortages of water and feed. Today the successful grassland manager also needs to consider the diversity and health of the ecosystem as a whole. Livestock grazing can negatively and/or positively affect riparian areas, sensitive plants, and endangered wildlife. Since the impact on a specific factor will vary depending on the timing, intensity and class of livestock grazed, …

Water Quality In Terms Of Metals During Flooding In Two Ecosystems Of The Conchos Watershed, Mexico: Rangeland‐Forest And Urban Areas, H. Rubio, J. Jiménez, K. Wood, M. Gutierrez

IGC Proceedings (1997-2023)

No abstract provided.

Impacts Of Grazing Management On Cattle Distribution And Non‐Point Source Pollution From Pastures In The Central United States, M. Haan, J. Russell, D. Bear, D. Morrical

IGC Proceedings (1997-2023)

No abstract provided.

Grassland And Water Resources: Recent Trends And Future Challenges In Temperate Zones, Benoît Marc

IGC Proceedings (1997-2023)

No abstract provided.

The North Wyke Farm Platform: A New Uk National Capability For Research Into Sustainability Of Agricultural Temperate Grassland Management, Phil J. Murray, Bruce A. Griffith, Robert J. Orr, Martin S. A. Blackwell, Jane M. B. Hawkins, S. Peukert

IGC Proceedings (1997-2023)

The North Wyke Farm Platform is a new UK National Capability that will enable studies that can be closely monitored and controlled under different land-use options at the farm-scale. As a Biotechnology and Biological Sciences Research Council-funded National Capability, the Farm Platform provides centralised scientific facilities including core data (field and water chemistry, water flow rates, greenhouse gas emissions from soils, livestock and agronomic data, and farm management records). Access to the Farm Platform for experimental work or to data will be available to other research users and collaborators. This shared approach will enhance the depth and breadth of information …

Mediating Socio-Political Barriers To Water Quality Improvement In Surface Water On Grazed Wildlands, Tipton D. Hudson

IGC Proceedings (1997-2023)

Acute and growing social and legal conflict over regulation of non-point source pollution in Washington State has hampered proactive efforts to improve water quality in streams dominated by grazed watersheds. Livestock farmers caught in the conflict over water quality experience legal risk, reduced quality of life, and financial risk. Nonpoint source pollution is “pollution that is not released through pipes but rather originates from multiple sources over a relatively large area”. This diffuse pollution is notoriously difficult to regulate. Because causality is often not definable, coercing behavior is problematic, and most efforts to address nonpoint source (NPS) pollution rely on …

Rehabilitating Degraded Frontage Soils In Tropical North Queensland, Trevor J. Hall

IGC Proceedings (1997-2023)

The extensive tropical grasslands of north Queensland are grazed by beef cattle and provide a significant proportion of the water flowing into the Great Barrier Reef (GBR) lagoon. Soil sediments and nutrients eroding from the grazing lands of the Burdekin and Fitzroy catchments in north-east Queensland contributes to reduced water quality in the GBR lagoon. Degraded and eroded D-condition bare areas and eroding gullies in grazing lands provide a disproportionate amount of soil and nutrient losses from predominately native pasture grasslands used for cattle grazing. Rehabilitating these degraded areas will help improve water quality flowing onto the reef.

Rehabilitation methods …