Hubbard Brook Experimental Forest: Data in support of Territory sizes and patterns of habitat use by forest passerines over five decades: Ideal free or ideal despotic?, Zammarelli et al.
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In this study, we analyzed territory sizes of seven migratory songbirds occupying a 10-hectare plot in the Hubbard Brook Experimental Forest, New Hampshire, USA over a 52-year period (1969-2021). All species varied in abundance over the duration of the study, some dramatically. Changes in territory sizes were inversely related to changes in abundance within the study plot despite differences in habitat preference, supporting the ideal free distribution. Territory sizes varied two-fold within a year across species. Results contribute to understanding how variation in territory size relates to 1) how habitat use changes with bird abundance, 2) the evolution of territory size, and 3) the role of territoriality in population dynamics. This dataset includes data, R code, and spatial files supporting this study. These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental Forest, which is operated and maintained by the USDA Forest Service, Northern Research Station. Associated datasets in the data catalog: Holmes, R.T., N.L. Rodenhouse, and M.T. Hallworth. 2022. Bird Abundances at the Hubbard Brook Experimental Forest (1969-present) and on three replicate plots (1986-2000) in the White Mountain National Forest ver 8. Environmental Data Initiative. https://doi.org/10.6073/pasta/6422a72893616ce9020086de5a5714cd (Accessed 2023-12-17). Zammarelli, M.B. and R.T. Holmes. 2023. Hubbard Brook Experimental Forest: 10-ha bird plot territory maps, 1969 - 2021 ver 1. Environmental Data Initiative. https://doi.org/10.6073/pasta/df93595ba8df60570d472f6e6f58839e (Accessed 2024-01-11).
本研究针对美国新罕布什尔州哈伯德布鲁克实验林（Hubbard Brook Experimental Forest）内一块10公顷样地中的7种迁徙鸣禽，开展了为期52年（1969-2021年）的领域面积分析。研究周期内，所有物种的种群丰度均存在波动，部分物种的波动幅度尤为显著。尽管不同物种的生境偏好存在差异，但样地内领域面积的变化与种群丰度变化呈负相关，这一结果支持了理想自由分布（ideal free distribution）理论。各物种的领域面积在单年度内的变异幅度可达两倍。本研究结果有助于深入理解以下三方面内容：1）生境利用如何随鸟类种群丰度发生变化；2）领域面积的演化机制；3）领域行为在种群动态中的作用。本数据集包含支撑本研究的相关数据、R代码及空间文件。这些数据隶属于哈伯德布鲁克生态系统研究（Hubbard Brook Ecosystem Study, HBES）。HBES是由美国农业部林务局（USDA Forest Service）北方研究站（Northern Research Station）运营维护的哈伯德布鲁克实验林的协作研究项目。本数据目录中的关联数据集如下： 1. Holmes, R.T.、N.L. Rodenhouse 与 M.T. Hallworth. 2022. 《哈伯德布鲁克实验林（1969年至今）及怀特山国家森林内3块重复样地（1986-2000年）鸟类种群丰度》版本8. 环境数据倡议组织. https://doi.org/10.6073/pasta/6422a72893616ce9020086de5a5714cd（2023年12月17日访问） 2. Zammarelli, M.B. 与 R.T. Holmes. 2023. 《哈伯德布鲁克实验林：1969-2021年10公顷鸟类样地领域地图》版本1. 环境数据倡议组织. https://doi.org/10.6073/pasta/df93595ba8df60570d472f6e6f58839e（2024年1月11日访问）
