TERN Weekly Pollen Count - University of Melbourne, Parkville, Victoria 2009-2011

The datafile, published by the Terrestrial Ecosystem Research Network (TERN) contains the composition and abundance of airborne pollen collected at the University of Melbourne campus at Parkville, Melbourne, Australia for the MAPCAH study. The data were collected between September 2009 and December 2011 as part of a research program looking at the relationship between airborne pollen and asthma exacerbations in children and adolescents (see Erbas et al. (2012) A case cross over design to examine the role of aeroallergens and respiratory viruses on childhood asthma requiring hospitalization; the MAPCAH study J. Biomet Biostat doi 21556180.s7-018). These data have been included as part of a study of the Australian Aerobiology working group (Haberle, Bowman, Newnham, Johnston, Beggs, Buters, Campbell, Erbas, Godwin, Green, Heute, Jaggard, Medek, Murray, Newbigin, Thibaudon, Vicendese, Williamson, Davies “The macroecology of airborne pollen in Australian and New Zealand urban areas” ).\n\nThe September 2009-December 2011 pollen counts were performed using a Burkard 7-day recording volumetric trap (Burkard Manufacturing Co. Ltd., Rickmansworth, Hertfordshire, UK). Airborne pollen grains were trapped on an adhesive (Dow Corning Sylgard 527 silicone dielectric gel) coated tape or a glass microscope slide by intake of air at a flow of 10 l min-1. A microscope slide was used between October and December and transparent plastic MelinexTM tape was used at other times. The glass slide was changed daily and tape changed on a weekly basis and cut into seven pieces, each representing a 24 hr period. The pieces of tape were then individually mounted on glass microscope slides. Pollen grains were stained with Calberla's stain and counted using a light microscope by randomly scanning the length of the tape (lengthwise traverse). The different types of pollen on the slide were identified using in-house materials and the daily concentration of each pollen type expressed as the average number of pollen grains m-3 of air for the preceding 24 hr period.\n\nFor more information please visit the [Australian Centre for Ecological Analysis and Synthesis (ACEAS) Data Portal](http://aceas.tern.org.au/knb/metacat/aceasdata.29/html).\n\nPlease note: \n\n * AURIN has spatially enabled the original data, acquired via the ACEAS Data Portal with permission from TERN.\n\n * This dataset allows you to filter the data by the date of collection.\n

本数据集由陆地生态系统研究网络（Terrestrial Ecosystem Research Network，TERN）发布，包含澳大利亚墨尔本帕克维尔校区墨尔本大学校园内采集的空气传播花粉组成与丰度数据，对应MAPCAH研究。该数据采集于2009年9月至2011年12月，为探讨儿童青少年空气传播花粉与哮喘急性加重关系的研究项目的组成部分，相关研究参见Erbas等人（2012）发表于《Journal of Biometrics & Biostatistics》的论文《采用病例交叉设计探讨气传变应原与呼吸道病毒对需住院儿童哮喘的作用：MAPCAH研究》，DOI:21556180.s7-018。上述数据已被纳入澳大利亚空气生物学工作组的研究：Haberle、Bowman、Newnham、Johnston、Beggs、Buters、Campbell、Erbas、Godwin、Green、Heute、Jaggard、Medek、Murray、Newbigin、Thibaudon、Vicendese、Williamson、Davies所著的《澳大利亚与新西兰城市地区空气传播花粉的大尺度生态学》。

2009年9月至2011年12月的花粉计数工作采用Burkard 7天记录式体积采样器（Burkard Manufacturing Co. Ltd.，英国赫特福德郡里克曼斯沃思）完成。空气传播花粉颗粒以10 L·min⁻¹的流速被采集，附着于涂有黏合剂（道康宁Sylgard 527硅酮绝缘凝胶）的胶带或玻璃载玻片上。其中2009年10月至12月使用玻璃载玻片，其余时段使用透明聚酯Melinex™胶带。玻璃载玻片每日更换，胶带则每周更换并切割为7段，每段对应24小时采样周期。随后将每段胶带分别固定于玻璃载玻片上。花粉颗粒经Calberla染色液染色后，通过光学显微镜沿胶带纵向随机扫描完成计数。玻片上的不同花粉类型通过内部自制参考材料完成鉴定，每种花粉类型的日浓度以此前24小时内每立方米空气中的平均花粉颗粒数表示。

如需获取更多信息，请访问【澳大利亚生态分析与合成中心（Australian Centre for Ecological Analysis and Synthesis，ACEAS）数据门户】（http://aceas.tern.org.au/knb/metacat/aceasdata.29/html）。

请注意：
* 澳大利亚城市与区域信息网络（Australian Urban and Regional Information Network，AURIN）经TERN许可，从ACEAS数据门户获取原始数据并完成空间化处理。
* 本数据集支持按采集日期对数据进行筛选。