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• 2009424234 abstract "The deliberate use of fire has long been a contentious issue in the South Island high country of New Zealand, being seen by some as damaging to the environment and by others as an essential pastoral management tool. These issues were examined in tall-tussock (Chionochloa rigida) grasslands at two sites in Otago, which were burned either in spring, to simulate pastoral management practice, or late summer, to simulate accidental fires. Fire temperatures reached over 1000°C, but were of short duration (4-8 minutes) and had little heating effect on the soil. Biomass, carbon, and nutrient losses were lowest when the grasslands were burned under damp conditions, and increased as soil and plant moisture levels declined. The best predictors of biomass loss were the moisture content of the top 5 cm of soil and the base of the tussocks. Spring burns under damp conditions killed c. 35% of the tussock tillers but did not cause the death of tussocks, whereas burns under drier conditions or later in the growing season killed over 75% of tussock tillers and resulted in the death of tussocks. Seedling densities and inflorescence production were also least affected when the grasslands were burned under damp spring conditions; when conditions were drier, both were dramatically reduced and showed little sign of returning to pre-burn levels 4-5 years after the fire. Early season burns under damp conditions posed little threat to the long-term survival of tall-tussock ecosystems, whereas fires later in the season, or when conditions were drier, resulted in substantially greater biomass, carbon and nutrient losses and caused a loss of tussock dominance, at least in the short to medium term. Therefore, minimising their extent should be a priority wherever tussock cover is to be retained.".
• 2009424234 contributor B11596749.
• 2009424234 contributor B11596750.
• 2009424234 contributor B11596751.
• 2009424234 created "c2009.".
• 2009424234 date "2009".
• 2009424234 date "c2009.".
• 2009424234 dateCopyrighted "c2009.".
• 2009424234 description "Includes bibliographical references (p. 35-37).".
• 2009424234 description "The deliberate use of fire has long been a contentious issue in the South Island high country of New Zealand, being seen by some as damaging to the environment and by others as an essential pastoral management tool. These issues were examined in tall-tussock (Chionochloa rigida) grasslands at two sites in Otago, which were burned either in spring, to simulate pastoral management practice, or late summer, to simulate accidental fires. Fire temperatures reached over 1000°C, but were of short duration (4-8 minutes) and had little heating effect on the soil. Biomass, carbon, and nutrient losses were lowest when the grasslands were burned under damp conditions, and increased as soil and plant moisture levels declined. The best predictors of biomass loss were the moisture content of the top 5 cm of soil and the base of the tussocks. Spring burns under damp conditions killed c. 35% of the tussock tillers but did not cause the death of tussocks, whereas burns under drier conditions or later in the growing season killed over 75% of tussock tillers and resulted in the death of tussocks. Seedling densities and inflorescence production were also least affected when the grasslands were burned under damp spring conditions; when conditions were drier, both were dramatically reduced and showed little sign of returning to pre-burn levels 4-5 years after the fire. Early season burns under damp conditions posed little threat to the long-term survival of tall-tussock ecosystems, whereas fires later in the season, or when conditions were drier, resulted in substantially greater biomass, carbon and nutrient losses and caused a loss of tussock dominance, at least in the short to medium term. Therefore, minimising their extent should be a priority wherever tussock cover is to be retained.".
• 2009424234 extent "42 p. :".
• 2009424234 hasFormat "Also issued electronically via World Wide Web in PDF format.".
• 2009424234 identifier "9780478145274 (pbk.)".
• 2009424234 identifier sfc290entire.pdf.
• 2009424234 isFormatOf "Also issued electronically via World Wide Web in PDF format.".
• 2009424234 isPartOf "Science for conservation ; 290.".
• 2009424234 isPartOf "Science for conservation, 1173-2946 ; 290".
• 2009424234 issued "2009".
• 2009424234 issued "c2009.".
• 2009424234 language "eng".
• 2009424234 publisher "Wellington, N.Z. : Publishing Team, Dept. of Conservation,".
• 2009424234 relation "Also issued electronically via World Wide Web in PDF format.".
• 2009424234 spatial "New Zealand Otago.".
• 2009424234 subject "581.7/4 22".
• 2009424234 subject "Chionochloa rigida Effect of fires on New Zealand Otago.".
• 2009424234 subject "Fire ecology New Zealand Otago.".
• 2009424234 subject "Grasses Effect of fires on New Zealand Otago.".
• 2009424234 subject "Grassland ecology New Zealand Otago.".
• 2009424234 subject "QK495.G74 P395 2009".
• 2009424234 title "Fire-induced changes to the vegetation of tall-tussock (Chionochloa rigida) grassland ecosystems / Ian J. Payton and H. Grant Pearce.".
• 2009424234 type "text".