Connell Rainforest Plot Network: Longitudinal Variation in Seedling Recruitment in Eight Species, Davies Creek Plot, Dinden National Park, Queensland, Australia, 1965–2004

Abstract: This data package shows longitudinal variation in seedling recruitment, the proportion of all recruits, and the corresponding number of standing seedlings for eight species of trees. These demonstrate that there is considerable variation in seedling recruitment across both species and time. These data are used to produce the graphs found in figures 5.18 on page 141.This plot consists of one 1.7 hectare plot in tropical rainforest, established in 1963. Rainforest tree attributes recorded comprise the size (height or girth) of tagged and mapped, free-standing stems of shrub and tree species. Sampling has been undertaken at intervals of 1-6 years since 1963, and this data package describes longitudinal variation in seedling recruitment over almost four decades. This data package forms part of the collection of vegetation data undertaken at plots situated in both Lamington National Park and Davies Creek initiated by Professor Joseph H. Connell (University of California, Santa Barbara) in 1963.

A synopsis of related data packages which have been collected as part of the Connell Rainforest Plot Network’s full program is provided at https://doi.org/10.25911/5c13444388e1b.

Sampling method: The Dinden National Park Plot is a 1.7 hectare plot.The plot was selected by Prof. Joseph H. Connell in 1963 on the advice of his CSIRO collaborators Dr Len Webb and Mr Geoff Tracey, and was chosen for three reasons; it was accessible, it was unlogged, and a smaller 0.4 ha plot belonging to the Queensland Department of Forestry had already been established there in 1951. This plot is one of two plots established by Connell in 1963 – the other is in subtropical rainforest near O’Reilly’s Guesthouse in Lamington National Park, 65 km south of Brisbane. The same sampling methods are employed at both plots, at intervals of 1-6 years.

Project funding: The National Science Foundation was the sole funder of this research between 1963 and 2003. The plots were unfunded from 2003–2011.

Between 2012 and 2018 this project was solely funded through the Long Term Ecological Research Network (LTERN)a facility within the Terrestrial Ecosystem Research Network (TERN) and supported by the Australian Government through the National Collaborative Research Infrastructure Strategy.

These data were curated and published with strategic funds from a TERN initiative to publish long term data packages from the book Lindenmayer et al. 2014 Biodiversity and Environmental Change: Monitoring, Challenges and Direction.

摘要：本数据集涵盖8种树木的幼苗更新、总更新个体占比以及对应存活幼苗数量的纵向变化。研究结果表明，不同树种间以及不同时间尺度下，幼苗更新均存在显著差异。本数据集用于绘制第141页图5.18中的相关图表。该数据集对应的样地为1963年设立的一处1.7公顷热带雨林样地。记录的雨林树木属性包括已标记并测绘的灌木与乔木独立茎干的尺寸（高度或胸径）。自1963年起，研究团队以1至6年为间隔开展采样，本数据集展现了近40年间幼苗更新的纵向变化特征。本数据集是由加利福尼亚大学圣巴巴拉分校Joseph H. Connell教授于1963年发起的拉明顿国家公园和戴维斯溪样地植被数据采集项目的一部分。康奈尔热带雨林样地网络完整计划中采集的相关数据集概览可访问以下链接获取：https://doi.org/10.25911/5c13444388e1b。

采样方法：丁登国家公园样地为1.7公顷样地。1963年，Joseph H. Connell教授依据其澳大利亚联邦科学与工业研究组织（Commonwealth Scientific and Industrial Research Organisation, CSIRO）合作者Len Webb博士与Geoff Tracey先生的建议选定该样地，选地依据有三：样地便于到达、未受采伐干扰，且昆士兰州林业部门已于1951年在此设立一处0.4公顷的小型样地。该样地是Connell于1963年设立的两处样地之一，另一处位于布里斯班以南65公里的拉明顿国家公园内奥赖利旅馆附近的亚热带雨林中。两处样地均采用相同的采样方法，采样间隔为1至6年。

项目资助：1963年至2003年间，本研究仅由美国国家科学基金会（National Science Foundation）资助。2003年至2011年期间，样地研究无专项资助。2012年至2018年，本项目仅由陆地生态系统研究网络（Terrestrial Ecosystem Research Network, TERN）下属的长期生态研究网络（Long Term Ecological Research Network, LTERN）资助，并由澳大利亚政府通过国家合作研究基础设施战略提供支持。本数据集的整理与发布依托TERN的专项资助计划，该计划旨在出版《Lindenmayer et al. 2014 Biodiversity and Environmental Change: Monitoring, Challenges and Direction》中的长期数据集。