The Good Practice Guide for the Swamp Kauri Industry brings together the statutory requirements and regulations for extracting, milling, and exporting swamp kauri timber; provides information on one way that these can be met; and outlines steps to avoid or mitigate adverse impacts to the values associated with swamp kauri.
Animal Welfare good practice guide for the use of animals in research, testing and teaching.
The Good Practice Guide for the Swamp Kauri Industry brings together the statutory requirements and regulations for extracting, milling, and exporting swamp kauri timber; provides information on one way that these can be met; and outlines steps to avoid or mitigate adverse impacts to the values associated with swamp kauri.
∙ High-temporal-frequency N2O measurements improve the accuracy of inventories.
∙ A range of analytical options now exists for direct and rapid N2O analysis in the field.
∙ Automated systems are robust and proven for field deployment.
∙ Chamber construction and design are critical for accurate soil gas flux determination.
∙ Ecosystem, soil conditions, and experimental aims dictate design.
∙ Understanding possible plant effects on N2O fluxes requires sophisticated design.
∙ Data on the potential artifacts of headspace mixing using fans are still needed.
∙ Different flux calculation schemes can produce different flux estimates.
∙ Nonlinear schemes tend to increase accuracy but also can decrease precision.
∙ Theoretical and practical aspects of the most common flux calculation schemes are described.
∙ A gold standard approach is presented, as are alternative approaches.
∙ Error analysis can quantify performance based on both accuracy and precision.
∙ N2O emissions are highly variable, and sampling strategy can affect cumulative emissions.
∙ Addressing gaps within sampling is required, as sampling limitations can affect emissions.
∙ There is a need to update methodologies within soil N2O research to improve gap-filling.
∙ Standardized guidelines on the use of N2O chamber techniques have been revised.
∙ This article summarizes a collection papers that represent the revised guidelines.
∙ Guidance onminimizing health and safety risks of chamber techniques is provided.